阅读说明：本技术 一种移动床式的高炉煤气脱硫装置及其脱硫方法 (Moving bed type blast furnace gas desulfurization device and desulfurization method thereof ) 是由 朱廷钰 李玉然 王斌 林玉婷 许志成 于 2020-11-30 设计创作，主要内容包括：本发明提供了一种移动床式的高炉煤气脱硫装置及其脱硫方法,所述的高炉煤气脱硫装置包括壳体,壳体内部沿轴向设置有催化剂隔板组,所述的催化剂隔板组包括由内至外同轴嵌套的内圈隔板件和外圈隔板件,所述的内圈隔板件和外圈隔板件之间形成的环形空腔内填入催化剂,所述的环形空腔所在的壳体顶部开设有进料口；所述内圈隔板件围成的空腔为排气通道,所述的外圈隔板件与壳体之间的空腔为进气通道,所述的壳体底部开设有与所述进气通道连通的进气口。较传统的固定床填料塔,降低了塔内阻力,移动床提高了催化剂的利用率,可显著提高高炉煤气脱硫效率。(The invention provides a moving bed type blast furnace gas desulfurization device and a desulfurization method thereof, wherein the blast furnace gas desulfurization device comprises a shell, a catalyst partition plate group is axially arranged in the shell, the catalyst partition plate group comprises an inner ring partition plate and an outer ring partition plate which are coaxially nested from inside to outside, a catalyst is filled in an annular cavity formed between the inner ring partition plate and the outer ring partition plate, and the top of the shell where the annular cavity is located is provided with a feeding hole; the cavity enclosed by the inner ring partition plate is an exhaust channel, the cavity between the outer ring partition plate and the shell is an air inlet channel, and the bottom of the shell is provided with an air inlet communicated with the air inlet channel. Compared with the traditional fixed bed packed tower, the internal resistance of the tower is reduced, the utilization rate of the catalyst is improved by the moving bed, and the desulfurization efficiency of blast furnace gas can be obviously improved.)

1. A moving bed type blast furnace gas desulfurization device is characterized by comprising a shell, wherein a catalyst partition plate group is axially arranged in the shell and comprises an inner ring partition plate and an outer ring partition plate which are coaxially nested from inside to outside, a catalyst is filled in an annular cavity formed between the inner ring partition plate and the outer ring partition plate, the top of the shell where the annular cavity is located is provided with a feed inlet, the catalyst is injected from the feed inlet at the top of the shell, and the catalyst is discharged from the bottom of the shell along the annular cavity;

the blast furnace gas enters the gas inlet channel from the gas inlet, passes through the catalyst layer and is discharged from the exhaust channel.

2. The blast furnace gas desulfurization apparatus according to claim 1, wherein the inner ring divider member has a cylindrical or prismatic shape;

preferably, the outer ring partition plate is cylindrical or prismatic;

preferably, the inner ring partition plate piece and the outer ring partition plate piece are the same in shape;

preferably, the inner ring partition plate is enclosed by a perforated plate or a louver plate;

preferably, the outer ring partition plate is enclosed by a perforated plate or a louver plate;

preferably, the inner ring partition plate and the outer ring partition plate are enclosed by louvers.

3. The blast furnace gas desulfurization device according to claim 1 or 2, wherein the inner ring partition plate is defined by four pieces of inner ring louver plates, and long sides of the four pieces of inner ring louver plates are sequentially butted to define a rectangular parallelepiped structure with two open ends;

preferably, the inner ring louver plates comprise at least one inner ring plate which is obliquely arranged and parallel to each other, the upper ends of the inner ring plates are inclined to one side of the exhaust channel, and the lower ends of the inner ring plates are inclined to one side of the annular cavity;

preferably, the included angle between the inner ring plate and the vertical surface is 12-43 degrees;

preferably, the distance between every two adjacent inner ring plate pieces in the vertical direction is 90-310 mm;

preferably, the horizontal plane where the upper end of the inner ring plate is located is marked as x₁And the plane of the lower end of the adjacent upper-stage inner ring partition plate is marked as x₂，x₁And x₂BetweenThe straight distance is 35-70 mm.

4. The blast furnace gas desulfurization device according to any one of claims 1 to 3, wherein the outer ring partition plate member comprises four outer ring louver plates, the long sides of the four outer ring louver plates are sequentially butted to form an outer ring partition plate member having a rectangular parallelepiped structure with two open ends, and the outer ring partition plate member and the inner ring partition plate member are sequentially nested from outside to inside to form a catalyst partition plate group with a zigzag cross section;

preferably, the outer ring louver comprises at least one outer ring plate which is obliquely arranged and parallel to each other, the upper end of the outer ring plate is inclined to one side of the air inlet channel, and the lower end of the outer ring plate is inclined to one side of the annular cavity;

preferably, the included angle between the outer ring plate and the vertical surface is 12-43 degrees;

preferably, the distance between two adjacent outer ring plate pieces in the vertical direction is 90-310 mm;

preferably, the horizontal plane of the upper end of the outer ring plate is marked as y₁And the plane of the lower end of the adjacent upper-stage outer ring partition plate is marked as y₂，y₁And y₂The vertical distance between the two is 35-70 mm.

5. The blast furnace gas desulfurization apparatus according to any one of claims 1 to 4, wherein a guide cone is axially provided in the exhaust channel, and the guide cone is used for guiding the blast furnace gas entering the exhaust channel out of the casing;

preferably, the flow guiding cone comprises two flow guiding plates, one side of each of the two flow guiding plates is butted and attached to the top of the exhaust channel, the other opposite side of each of the two flow guiding plates is butted against the two opposite sides of the bottom of the exhaust channel, and the two flow guiding plates and the bottom surface of the exhaust channel form a triangular prism-shaped flow guiding structure.

6. The blast furnace gas desulfurization apparatus according to any one of claims 1 to 5, wherein a discharge area is provided at the bottom of the casing in which the inner region surrounded by the outer peripheral partition plate member is located, and the bottom of the discharge area is externally connected with a discharge pipeline;

preferably, the discharging area is of an inverted cone structure;

preferably, a discharge valve is arranged on the discharge pipeline;

preferably, the discharge valve is a rotary discharge valve.

7. The blast furnace gas desulfurization apparatus according to any one of claims 1 to 6, wherein the casing is a cylindrical barrel;

preferably, two symmetrical air inlets are arranged at the bottom of the shell;

preferably, the top of the shell where the annular cavity is located is provided with at least two feed inlets, and further preferably, four feed inlets;

preferably, the feeding ports are equidistantly distributed on the top of the shell.

8. The blast furnace gas desulfurization apparatus according to any one of claims 1 to 7, wherein the catalyst comprises one or a combination of at least two of iron oxide, zinc oxide, or activated carbon;

preferably, the catalyst is one or a combination of at least two of a spherical shape, a cylindrical shape, a cubic shape or a rectangular parallelepiped shape.

9. A method for desulfurizing blast furnace gas, which is carried out by using the blast furnace gas desulfurization apparatus according to any one of claims 1 to 8, and which comprises:

catalyst is continuously injected into the annular cavity from the top of the shell, the catalyst is discharged from the bottom of the shell, blast furnace gas enters the gas inlet channel through the gas inlet, passes through the outer ring partition plate and enters the catalyst flow bed layer, and is in contact with the continuously flowing catalyst for desulfurization, and the desulfurized blast furnace gas passes through the inner ring partition plate and is discharged from the top of the shell through the gas discharge channel.

10. The desulfurization method according to claim 9, wherein the blast furnace gas entering the exhaust gas channel is guided out of the shell along the surface of the deflector by the deflector cone.

Technical Field

The invention belongs to the technical field of desulfurization, relates to a blast furnace gas desulfurization device and a desulfurization method thereof, and particularly relates to a moving bed type blast furnace gas desulfurization device and a desulfurization method thereof.

Background

Blast furnace gas is a byproduct in the iron making process, is used as combustible gas with the largest output in iron and steel enterprises, has wide application, and is generally sent to user units such as a blast furnace hot blast stove, a steel rolling heating furnace, a gas power generation unit and the like to be used as fuel. At present, users of blast furnace hot blast stoves, steel rolling heating furnaces, gas power generation and the like all require burning tail gas SO₂The ultra-low emission limit is reached, and the prior blast furnace gas purification process can not meet the requirement of SO₂And (5) controlling the requirements. The current technical route mainly includes source control and post-combustion end management.

A tail end treatment mode is adopted, hydrolysis desulfurization facilities need to be arranged at multiple points, and meanwhile, the amount of waste gas generated after coal gas combustion is large, and the scale of treatment facilities is large; if a source control mode is adopted, the blast furnace gas is subjected to fine hydrolysis desulfurization, the sulfur content in the fuel gas is reduced, the pressure of terminal treatment can be greatly reduced, and even terminal treatment facilities are omitted. The blast furnace gas comprises approximately 6-12% of carbon dioxide, 28-33% of carbon monoxide, 1-4% of hydrogen, 55-60% of nitrogen, 0.2-0.5% of hydrocarbons and sulfides, and the total sulfur content is 200-300 mg/m³Most of which are COS, H₂S only occupies a small part, so that the removal of COS in the blast furnace gas is the core of the hydrolysis desulfurization of the blast furnace gas.

Adopting a source control mode to implement blast furnace gas fine desulfurization, and controlling the total sulfur to be 20mg/m³The user can be ensured to realize SO₂The ultralow emission avoids the construction of dispersed terminal treatment facilities, and has important significance for promoting the ultralow emission modification of the steel industry and promoting the green development of the steel industry. The sulfide in the blast furnace gas is mainly carbonyl sulfide COS and H₂S is the main one, carbonyl sulfide COS is difficult to remove, and carbonyl sulfide COS is generally hydrolyzed and converted into H₂S, then with the original H in the gas₂S and the like are removed integrally. Removal of H₂The S process can generally adopt dry process or wet alkali spraying process such as ferric oxide, zinc oxide, active carbon and the like.

CN110591769A discloses a blast furnace gas catalytic desulfurization device and a method, comprising a cooling tower, an absorption tower, a solvent absorbent tank, a catalyst tank, a first liquid circulating pump and a filter; the air inlet of the cooling tower is connected with the blast furnace tail gas, and the air outlet of the cooling tower is connected with the air inlet of the absorption tower; a first solvent tank is arranged below the air inlet in the absorption tower, and a first gas-liquid contact device, a first spraying device and a first demisting device are sequentially arranged between the air inlet and the air outlet at the top of the absorption tower from bottom to top; the solvent absorbent tank is communicated with the first solvent tank, the catalyst tank and the first solvent tank are both communicated with a liquid inlet of the first liquid circulating pump, a liquid outlet of the first liquid circulating pump is connected with a liquid inlet of the filter, and a liquid outlet of the filter is connected with the first spraying device; and the first solvent tank and the solvent absorbent tank are internally provided with solvent absorbents for absorbing sulfur dioxide, organic sulfur and hydrogen sulfide in blast furnace gas. The core of the method is a wet desulphurization process, which can realize the recovery of sulfur resources, but has the disadvantages of complex process, more equipment, high alkali consumption, large system resistance and high operation cost.

CN110791328A discloses a blast furnace gas dry desulphurization system and method, including a gas inlet pipe, a first diffusing pipe, a second diffusing pipe, a first desulphurization absorber and a regenerating pipe; the coal gas inlet pipe and the second diffusion pipe are communicated to the inlet of the first desulfurization adsorber, and the outlet of the first desulfurization adsorber is communicated with the first diffusion pipe; the regeneration pipe is communicated with an outlet of the first desulfurization adsorber, a heater is arranged on the regeneration pipe, and a regeneration valve is arranged on the air inlet side of the heater; the coal gas inlet pipe is provided with a desulfurization front valve group, the first diffusion pipe is provided with a desulfurization rear valve group, the regeneration pipe is provided with a regeneration front valve group, and the second diffusion pipe is provided with a regeneration rear valve group. Compared with a moving bed, the fixed bed has small treatment capacity, low catalyst utilization rate and higher in-situ regeneration energy consumption.

CN111849566A discloses a blast furnace gas hydrolysis desulfurization device, which comprises a shell, wherein a pretreatment catalyst layer and at least one catalyst layer are arranged in the shell at intervals along the flow direction of flue gas, a transition region is arranged between two adjacent catalyst layers, and a conversion region is arranged between the pretreatment catalyst layer and the catalyst layer adjacent to the pretreatment catalyst layer; an air inlet bypass is externally connected to the smoke inlet pipeline of the shell, the outlet end of the air inlet bypass is connected into the conversion area, and smoke flows into the conversion area through the air inlet bypass.

The blast furnace gas desulfurization device designed in the current patent is not perfect and has a large lifting space.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a moving bed type blast furnace gas desulfurization device and a desulfurization method thereof, compared with the traditional fixed bed packed tower, the resistance in the tower is reduced, the utilization rate of the catalyst is improved by a moving bed, the catalyst is fully contacted with the gas, the purification efficiency is high, the adaptability to working conditions is good, the operation rate is high, the mass transfer area is large, the pressure drop is small, the blast furnace gas desulfurization efficiency can be obviously improved, and the considerable economic benefit is achieved.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a moving bed type blast furnace gas desulfurization device, which comprises a shell, wherein a catalyst partition plate group is axially arranged in the shell and comprises an inner ring partition plate and an outer ring partition plate which are coaxially nested from inside to outside, a catalyst is filled in an annular cavity formed between the inner ring partition plate and the outer ring partition plate, the top of the shell where the annular cavity is located is provided with a feed inlet, the catalyst is injected from the feed inlet at the top of the shell and is discharged from the bottom of the shell along the annular cavity;

the blast furnace gas enters the gas inlet channel from the gas inlet, passes through the catalyst layer and is discharged from the exhaust channel.

Compared with the traditional fixed bed packed tower, the moving bed type blast furnace gas desulfurization device provided by the invention has the advantages that the resistance in the tower is reduced, the utilization rate of the catalyst is improved by the moving bed, the catalyst is fully contacted with the gas, the purification efficiency is high, the working condition adaptability is good, the operation rate is high, the mass transfer area is large, the pressure drop is small, the blast furnace gas desulfurization efficiency can be obviously improved, and the considerable economic benefit is realized.

In a preferred embodiment of the present invention, the inner ring spacer is cylindrical or prismatic.

Preferably, the outer ring partition plate member is cylindrical or prismatic.

Preferably, the inner ring partition plate and the outer ring partition plate are the same in shape.

Preferably, the inner ring partition plate is enclosed by a porous plate or a louver plate.

Preferably, the outer ring partition plate is enclosed by a porous plate or a louver.

Preferably, the inner ring partition plate and the outer ring partition plate are enclosed by louvers.

In the invention, the inner ring partition plate piece and the outer ring partition plate piece are in the form of the louver plates, and compared with the traditional porous plate form, the resistance is reduced, and the mass transfer area of the coal gas and the catalyst is increased.

As a preferred technical scheme of the invention, the inner ring partition plate is formed by enclosing four pieces of inner ring shutter plates, and long sides of the four pieces of inner ring shutter plates are sequentially butted to enclose a cuboid structure with two open ends.

Preferably, the inner ring louver plates comprise at least one inner ring plate which is obliquely arranged and parallel to each other, the upper ends of the inner ring plates are inclined to one side of the exhaust passage, and the lower ends of the inner ring plates are inclined to one side of the annular cavity.

Preferably, the included angle between the inner ring plate and the vertical plane is 12-43 °, for example, 12 °, 14 °, 16 °, 18 °, 20 °, 22 °, 24 °, 26 °, 28 °, 30 °, 32 °, 34 °, 36 °, 38 °, 40 ° or 43 °, but not limited to the enumerated values, and other unrecited values in the numerical range are also applicable.

Preferably, the distance between two adjacent inner ring plate members in the vertical direction is 90-310 mm, for example, 90mm, 100mm, 120mm, 140mm, 160mm, 180mm, 200mm, 220mm, 240mm, 260mm, 290mm, 300mm or 310mm, but is not limited to the enumerated values, and other non-enumerated values in the numerical range are also applicable.

Preferably, the horizontal plane where the upper end of the inner ring plate is located is marked as x₁And the plane of the lower end of the adjacent upper-stage inner ring partition plate is marked as x₂，x₁And x₂The vertical distance therebetween is 35 to 70mm, and may be, for example, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, 65mm or 70mm, but is not limited to the values listed, and other values not listed in the range of the values are also applicable.

As a preferable technical scheme, the outer ring partition plate comprises four outer ring louver plates, the long sides of the four outer ring louver plates are sequentially butted to form an outer ring partition plate with a cuboid structure with two open ends, and the outer ring partition plate and the inner ring partition plate are sequentially nested from outside to inside to form the catalyst partition plate group with a shape like a Chinese character 'hui' in cross section.

Preferably, the outer ring louver comprises at least one outer ring plate which is obliquely arranged and parallel to each other, the upper end of the outer ring plate is inclined to one side of the air inlet channel, and the lower end of the outer ring plate is inclined to one side of the annular cavity.

Preferably, the included angle between the outer ring plate and the vertical plane is 12 to 43 °, for example, 12 °, 14 °, 16 °, 18 °, 20 °, 22 °, 24 °, 26 °, 28 °, 30 °, 32 °, 34 °, 36 °, 38 °, 40 ° or 43 °, but not limited to the enumerated values, and other unrecited values in the numerical range are also applicable.

Preferably, the distance between two adjacent outer ring plates in the vertical direction is 90-310 mm, for example, 90mm, 100mm, 120mm, 140mm, 160mm, 180mm, 200mm, 220mm, 240mm, 260mm, 290mm, 300mm or 310mm, but is not limited to the enumerated values, and other non-enumerated values in the numerical range are also applicable.

Preferably, the horizontal plane of the upper end of the outer ring plate is marked as y₁And the plane of the lower end of the adjacent upper-stage outer ring partition plate is marked as y₂，y₁And y₂The vertical distance between the two plates is 35-70 mm, such as 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, 65mm or 70mm, but not limited theretoWhere numerical values are recited, other numerical values within the numerical range not recited are equally applicable.

As a preferable technical solution of the present invention, a guide cone is axially disposed in the exhaust channel, and the guide cone is used for guiding blast furnace gas entering the exhaust channel out of the casing.

Preferably, the flow guiding cone comprises two flow guiding plates, one side of each of the two flow guiding plates is butted and attached to the top of the exhaust channel, the other opposite side of each of the two flow guiding plates is butted against the two opposite sides of the bottom of the exhaust channel, and the two flow guiding plates and the bottom surface of the exhaust channel form a triangular prism-shaped flow guiding structure.

As a preferable technical scheme of the invention, the bottom of the shell in which the inner area defined by the outer ring partition plate is located is provided with a discharging area, and the bottom of the discharging area is externally connected with a discharging pipeline.

Preferably, the discharging area is of an inverted cone structure.

Preferably, a discharge valve is arranged on the discharge pipeline.

Preferably, the discharge valve is a rotary discharge valve.

As a preferable technical scheme of the invention, the shell is a cylindrical barrel.

Preferably, the bottom of the shell is provided with two symmetrical air inlets.

Preferably, the top of the shell where the annular cavity is located is provided with at least two feed inlets, and further preferably, four feed inlets.

Preferably, the feeding ports are equidistantly distributed on the top of the shell.

As a preferred embodiment of the present invention, the catalyst comprises one or a combination of at least two of iron oxide, zinc oxide and activated carbon.

Preferably, the catalyst is one or a combination of at least two of a spherical shape, a cylindrical shape, a cubic shape or a rectangular parallelepiped shape.

In a second aspect, the present invention provides a method for desulfurizing blast furnace gas, the method for desulfurizing blast furnace gas using the apparatus for desulfurizing blast furnace gas of the first aspect, the method comprising:

catalyst is continuously injected into the annular cavity from the top of the shell, the catalyst is discharged from the bottom of the shell, blast furnace gas enters the gas inlet channel through the gas inlet, passes through the outer ring partition plate and enters the catalyst flow bed layer, and is in contact with the continuously flowing catalyst for desulfurization, and the desulfurized blast furnace gas passes through the inner ring partition plate and is discharged from the top of the shell through the gas discharge channel.

As a preferred technical scheme of the invention, the blast furnace gas entering the exhaust channel is led out of the shell along the surface of the guide plate under the action of the guide cone.

Compared with the prior art, the invention has the beneficial effects that:

compared with the traditional fixed bed packed tower, the moving bed type blast furnace gas desulfurization device provided by the invention has the advantages that the resistance in the tower is reduced, the utilization rate of the catalyst is improved by the moving bed, the catalyst is fully contacted with the gas, the purification efficiency is high, the working condition adaptability is good, the operation rate is high, the mass transfer area is large, the pressure drop is small, the blast furnace gas desulfurization efficiency can be obviously improved, and the considerable economic benefit is realized.

Drawings

FIG. 1 is a schematic structural diagram of a blast furnace gas desulfurization plant according to an embodiment of the present invention;

FIG. 2 is an elevational cross-sectional view of the interior of a housing provided in accordance with one embodiment of the present invention;

FIG. 3 is a top view of a blast furnace gas desulfurization unit according to an embodiment of the present invention;

wherein, 1-an air intake passage; 2-a catalyst; 3-an exhaust channel; 4-a discharge area; 5-an air inlet; 6-outer ring spacer member; 7-inner ring spacer elements; 8-a flow guide cone; 9-a feed inlet; 10-a discharge valve.

Detailed Description

It is to be understood that in the description of the present invention, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be taken as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

It should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

It should be understood by those skilled in the art that the present invention necessarily includes necessary piping, conventional valves and general pump equipment for achieving the complete process, but the above contents do not belong to the main inventive points of the present invention, and those skilled in the art can select the layout of the additional equipment based on the process flow and the equipment structure, and the present invention is not particularly limited to this.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Example 1

The invention provides a moving bed type blast furnace gas desulfurization device, which comprises a shell, wherein a catalyst partition plate group is arranged in the shell along the axial direction, and the catalyst partition plate group comprises an inner ring partition plate member 7 and an outer ring partition plate member 6 which are coaxially nested from inside to outside. The spherical iron oxide catalyst 2 is filled in an annular cavity formed between the inner ring partition plate 7 and the outer ring partition plate 6, the top of the shell where the annular cavity is located is provided with a feed inlet 9, the catalyst 2 is injected from the feed inlet 9 at the top of the shell and is discharged from the bottom of the shell along the annular cavity. The cavity enclosed by the inner ring partition plate 7 is an exhaust channel 3, the cavity between the outer ring partition plate 6 and the shell is an air inlet channel 1, the bottom of the shell is provided with an air inlet 5 communicated with the air inlet channel 1, and blast furnace gas enters the air inlet channel 1 from the air inlet 5, passes through the catalyst layer and is exhausted from the exhaust channel 3.

The inner ring partition plate 7 and the outer ring partition plate 6 are cylindrical structures surrounded by porous plates, the inner ring partition plate 7 and the outer ring partition plate 6 are nested inside and outside to form a concentric circular catalyst partition plate group, and the porous plates adopted by the inner ring partition plate 7 and the outer ring partition plate 6 have the aperture ratio of 80%.

As shown in fig. 1, a flow guiding cone 8 is axially arranged in the exhaust passage 3, the flow guiding cone 8 comprises two flow guiding plates, one of the two flow guiding plates is butted and attached to the top of the exhaust passage 3, the other opposite side is butted against the two opposite sides of the bottom of the exhaust passage 3, and the two flow guiding plates and the bottom surface of the exhaust passage 3 form a triangular prism-shaped flow guiding structure.

The bottom of the shell, in which the inner area surrounded by the outer ring partition plate 6 is located, is provided with a discharging area 4 with an inverted cone structure, the bottom of the discharging area 4 is externally connected with a discharging pipeline, and the discharging pipeline is provided with a discharging valve 10.

As shown in fig. 3, the housing is a cylindrical cylinder, and two symmetrical air inlets 5 are arranged at the bottom of the housing. Two feed inlets 9 are opened at the top of the shell where the annular cavity is located, and a rotary discharge valve 10 is independently connected at each feed inlet 9.

Example 2

The invention provides a moving bed type blast furnace gas desulfurization device, which comprises a shell, wherein a catalyst partition plate group is arranged in the shell along the axial direction, and the catalyst partition plate group comprises an inner ring partition plate member 7 and an outer ring partition plate member 6 which are coaxially nested from inside to outside. Cylindrical zinc oxide catalyst 2 is filled in an annular cavity formed between the inner ring partition plate 7 and the outer ring partition plate 6, a feed inlet 9 is formed in the top of the shell where the annular cavity is located, the catalyst 2 is injected from the feed inlet 9 in the top of the shell, and is discharged from the bottom of the shell along the annular cavity. The cavity enclosed by the inner ring partition plate 7 is an exhaust channel 3, the cavity between the outer ring partition plate 6 and the shell is an air inlet channel 1, the bottom of the shell is provided with an air inlet 5 communicated with the air inlet channel 1, and blast furnace gas enters the air inlet channel 1 from the air inlet 5, passes through the catalyst layer and is exhausted from the exhaust channel 3.

The inner ring partition plate 7 and the outer ring partition plate 6 are both of a cuboid structure enclosed by four porous plates, the inner and outer porous plates are coaxially nested inside and outside to obtain the catalyst partition plate group, and the aperture ratio of the porous plates adopted by the inner ring partition plate 7 and the outer ring partition plate 6 is 85%.

As shown in fig. 1, a flow guiding cone 8 is axially arranged in the exhaust passage 3, the flow guiding cone 8 comprises two flow guiding plates, one of the two flow guiding plates is butted and attached to the top of the exhaust passage 3, the other opposite side is butted against the two opposite sides of the bottom of the exhaust passage 3, and the two flow guiding plates and the bottom surface of the exhaust passage 3 form a triangular prism-shaped flow guiding structure.

The bottom of the shell in which the inner area enclosed by the outer ring partition plate 6 is located is provided with a discharging area 4 with an inverted cone structure, the bottom of the discharging area 4 is externally connected with a discharging pipeline, and the discharging pipeline is provided with a discharging valve 10.

As shown in fig. 3, the housing is a cylindrical cylinder, and two symmetrical air inlets 5 are arranged at the bottom of the housing. The top of the shell where the annular cavity is arranged is provided with three feed inlets 9 which are arranged at equal intervals.

Example 3

The embodiment provides a moving bed type blast furnace gas desulfurization device, which comprises a shell, wherein a catalyst partition plate group is arranged in the shell along the axial direction, and the catalyst partition plate group comprises an inner ring partition plate member 7 and an outer ring partition plate member 6 which are coaxially nested from inside to outside. The cubic active carbon catalyst 2 is filled in an annular cavity formed between the inner ring partition plate 7 and the outer ring partition plate 6, the top of the shell where the annular cavity is located is provided with a feed inlet 9, the catalyst 2 is injected from the feed inlet 9 at the top of the shell and is discharged from the bottom of the shell along the annular cavity. The cavity enclosed by the inner ring partition plate 7 is an exhaust channel 3, the cavity between the outer ring partition plate 6 and the shell is an air inlet channel 1, the bottom of the shell is provided with an air inlet 5 communicated with the air inlet channel 1, and blast furnace gas enters the air inlet channel 1 from the air inlet 5, passes through the catalyst layer and is exhausted from the exhaust channel 3.

As shown in fig. 3, the inner ring partition plate 7 is formed by enclosing four pieces of inner ring louver plates, and long sides of the four pieces of inner ring louver plates are sequentially butted to enclose a rectangular parallelepiped structure with two open ends. As shown in fig. 2, the inner-ring louver includes a plurality of inner-ring plates that are obliquely arranged and parallel to each other, the upper ends of the inner-ring plates are inclined toward the exhaust passage 3 side, and the lower ends of the inner-ring plates are inclined toward the annular cavity side. The included angle between the inner ring plate and the vertical surface is 12 degrees, and the distance between two adjacent inner ring plates in the vertical direction is 90 mm. The horizontal plane of the upper end of the inner ring plate is marked as x₁And the plane of the lower end of the adjacent upper-stage inner ring partition plate is marked as x₂，x₁And x₂The vertical distance between them is 35 mm.

As shown in fig. 3, the outer ring partition member 6 includes four outer ring louver plates, each long side of the four outer ring louver plates is sequentially butted to form the outer ring partition member 6 having a rectangular parallelepiped structure with two open ends, and the outer ring partition member 6 and the inner ring partition member 7 are sequentially nested from outside to inside to form the catalyst partition plate group having a zigzag cross section. As shown in fig. 2, the outer ring louver includes a plurality of outer ring plates that are disposed obliquely and parallel to each other, an upper end of each outer ring plate is inclined toward the intake passage 1, and a lower end of each outer ring plate is inclined toward the annular cavity. The included angle of the outer ring plate and the vertical surface is 12 degrees, the distance between two adjacent outer ring plates in the vertical direction is 90mm, and the horizontal plane of the upper end of the outer ring plate is marked as y₁And the plane of the lower end of the adjacent upper-stage outer ring partition plate is marked as y₂，y₁And y₂The vertical distance between them is 35 mm.

As shown in fig. 1, a flow guiding cone 8 is axially arranged in the exhaust passage 3, the flow guiding cone 8 comprises two flow guiding plates, one of the two flow guiding plates is butted and attached to the top of the exhaust passage 3, the other opposite side is butted against the two opposite sides of the bottom of the exhaust passage 3, and the two flow guiding plates and the bottom surface of the exhaust passage 3 form a triangular prism-shaped flow guiding structure.

The bottom of the shell in which the inner area enclosed by the outer ring partition plate 6 is located is provided with a discharging area 4 with an inverted cone structure, the bottom of the discharging area 4 is externally connected with a discharging pipeline, and the discharging pipeline is provided with a discharging valve 10.

As shown in fig. 3, the housing is a cylindrical cylinder, and two symmetrical air inlets 5 are arranged at the bottom of the housing. The top of the shell where the annular cavity is arranged is provided with four feed inlets 9 which are arranged at equal intervals.

Example 4

The embodiment provides a moving bed type blast furnace gas desulfurization device, which comprises a shell, wherein a catalyst partition plate group is arranged in the shell along the axial direction, and the catalyst partition plate group comprises an inner ring partition plate member 7 and an outer ring partition plate member 6 which are coaxially nested from inside to outside. The cuboid iron oxide catalyst 2 is filled in an annular cavity formed between the inner ring partition plate 7 and the outer ring partition plate 6, the top of the shell where the annular cavity is located is provided with a feed inlet 9, the catalyst 2 is injected from the feed inlet 9 at the top of the shell and is discharged from the bottom of the shell along the annular cavity. The cavity enclosed by the inner ring partition plate 7 is an exhaust channel 3, the cavity between the outer ring partition plate 6 and the shell is an air inlet channel 1, the bottom of the shell is provided with an air inlet 5 communicated with the air inlet channel 1, and blast furnace gas enters the air inlet channel 1 from the air inlet 5, passes through the catalyst layer and is exhausted from the exhaust channel 3.

As shown in fig. 3, the inner ring partition plate 7 is formed by enclosing four pieces of inner ring louver plates, and long sides of the four pieces of inner ring louver plates are sequentially butted to enclose a rectangular parallelepiped structure with two open ends. As shown in fig. 2, the inner-ring louver includes a plurality of inner-ring plates that are obliquely arranged and parallel to each other, the upper ends of the inner-ring plates are inclined toward the exhaust passage 3 side, and the lower ends of the inner-ring plates are inclined toward the annular cavity side. The included angle between the inner ring plate and the vertical surface is 18 degrees, and the distance between two adjacent inner ring plate in the vertical direction is 134 mm. The horizontal plane of the upper end of the inner ring plate is marked as x₁And the plane of the lower end of the adjacent upper-stage inner ring partition plate is marked as x₂，x₁And x₂The vertical distance between them is 42 mm.

As shown in fig. 3, the outer ring partition member 6 includes four outer ring louver plates, each long side of the four outer ring louver plates is sequentially butted to form the outer ring partition member 6 having a rectangular parallelepiped structure with two open ends, and the outer ring partition member 6 and the inner ring partition member 7 are sequentially nested from outside to inside to form the catalyst partition plate group having a zigzag cross section. As shown in fig. 2, the outer ring louver includes a plurality of outer ring plates that are disposed obliquely and parallel to each other, an upper end of each outer ring plate is inclined toward the intake passage 1, and a lower end of each outer ring plate is inclined toward the annular cavity. The included angle between the outer ring plate and the vertical surface is 18 degrees, the distance between two adjacent outer ring plates in the vertical direction is 134mm, and the horizontal plane where the upper end of the outer ring plate is located is marked as y₁And the plane of the lower end of the adjacent upper-stage outer ring partition plate is marked as y₂，y₁And y₂The vertical distance between them is 42 mm.

As shown in fig. 1, a flow guiding cone 8 is axially arranged in the exhaust passage 3, the flow guiding cone 8 comprises two flow guiding plates, one of the two flow guiding plates is butted and attached to the top of the exhaust passage 3, the other opposite side is butted against the two opposite sides of the bottom of the exhaust passage 3, and the two flow guiding plates and the bottom surface of the exhaust passage 3 form a triangular prism-shaped flow guiding structure.

The bottom of the shell, in which the inner area surrounded by the outer ring partition plate 6 is located, is provided with a discharging area 4 with an inverted cone structure, the bottom of the discharging area 4 is externally connected with a discharging pipeline, and the discharging pipeline is provided with a discharging valve 10.

As shown in fig. 3, the housing is a cylindrical cylinder, and two symmetrical air inlets 5 are arranged at the bottom of the housing. The top of the shell where the annular cavity is arranged is provided with four feed inlets 9 which are arranged at equal intervals.

Example 5

The embodiment provides a moving bed type blast furnace gas desulfurization device, which comprises a shell, wherein a catalyst partition plate group is arranged in the shell along the axial direction, and the catalyst partition plate group comprises an inner ring partition plate member 7 and an outer ring partition plate member 6 which are coaxially nested from inside to outside. Spherical active carbon catalyst 2 is filled in an annular cavity formed between the inner ring partition plate 7 and the outer ring partition plate 6, a feed inlet 9 is formed in the top of the shell where the annular cavity is located, and the catalyst 2 is injected from the feed inlet 9 in the top of the shell and is discharged from the bottom of the shell along the annular cavity. The cavity enclosed by the inner ring partition plate 7 is an exhaust channel 3, the cavity between the outer ring partition plate 6 and the shell is an air inlet channel 1, the bottom of the shell is provided with an air inlet 5 communicated with the air inlet channel 1, and blast furnace gas enters the air inlet channel 1 from the air inlet 5, passes through the catalyst layer and is exhausted from the exhaust channel 3.

As shown in fig. 3, the inner ring partition plate 7 is formed by enclosing four pieces of inner ring louver plates, and long sides of the four pieces of inner ring louver plates are sequentially butted to enclose a rectangular parallelepiped structure with two open ends. As shown in fig. 2, the inner-ring louver includes a plurality of inner-ring plates that are obliquely arranged and parallel to each other, the upper ends of the inner-ring plates are inclined toward the exhaust passage 3 side, and the lower ends of the inner-ring plates are inclined toward the annular cavity side. The included angle between the inner ring plate and the vertical surface is 24 degrees, and the distance between two adjacent inner ring plate in the vertical direction is 178 mm. The horizontal plane of the upper end of the inner ring plate is marked as x₁And the plane of the lower end of the adjacent upper-stage inner ring partition plate is marked as x₂，x₁And x₂The vertical distance between them is 49 mm.

As shown in fig. 3, the outer ring partition member 6 includes four outer ring louver plates, each long side of the four outer ring louver plates is sequentially butted to form the outer ring partition member 6 having a rectangular parallelepiped structure with two open ends, and the outer ring partition member 6 and the inner ring partition member 7 are sequentially nested from outside to inside to form the catalyst partition plate group having a zigzag cross section. As shown in fig. 2, the outer ring louver includes a plurality of outer ring plates that are disposed obliquely and parallel to each other, an upper end of each outer ring plate is inclined toward the intake passage 1, and a lower end of each outer ring plate is inclined toward the annular cavity. The included angle between the outer ring plate and the vertical surface is 24 degrees, the distance between two adjacent outer ring plates in the vertical direction is 178mm, and the horizontal plane of the upper end of the outer ring plate is marked as y₁And the plane of the lower end of the adjacent upper-stage outer ring partition plate is marked as y₂，y₁And y₂The vertical distance between them is 49 mm.

As shown in fig. 1, a flow guiding cone 8 is axially arranged in the exhaust passage 3, the flow guiding cone 8 comprises two flow guiding plates, one of the two flow guiding plates is butted and attached to the top of the exhaust passage 3, the other opposite side is butted against the two opposite sides of the bottom of the exhaust passage 3, and the two flow guiding plates and the bottom surface of the exhaust passage 3 form a triangular prism-shaped flow guiding structure.

The bottom of the shell, in which the inner area surrounded by the outer ring partition plate 6 is located, is provided with a discharging area 4 with an inverted cone structure, the bottom of the discharging area 4 is externally connected with a discharging pipeline, and the discharging pipeline is provided with a discharging valve 10.

As shown in fig. 3, the housing is a cylindrical cylinder, and two symmetrical air inlets 5 are arranged at the bottom of the housing. The top of the shell where the annular cavity is arranged is provided with four feed inlets 9 which are arranged at equal intervals.

Example 6

The embodiment provides a moving bed type blast furnace gas desulfurization device, which comprises a shell, wherein a catalyst partition plate group is arranged in the shell along the axial direction, and the catalyst partition plate group comprises an inner ring partition plate member 7 and an outer ring partition plate member 6 which are coaxially nested from inside to outside. Cylindrical iron oxide catalyst 2 is filled in an annular cavity formed between the inner ring partition plate 7 and the outer ring partition plate 6, a feed inlet 9 is formed in the top of a shell where the annular cavity is located, and the catalyst 2 is injected from the feed inlet 9 in the top of the shell and is discharged from the bottom of the shell along the annular cavity. The cavity enclosed by the inner ring partition plate 7 is an exhaust channel 3, the cavity between the outer ring partition plate 6 and the shell is an air inlet channel 1, the bottom of the shell is provided with an air inlet 5 communicated with the air inlet channel 1, and blast furnace gas enters the air inlet channel 1 from the air inlet 5, passes through the catalyst layer and is exhausted from the exhaust channel 3.

As shown in fig. 3, the inner ring partition plate 7 is formed by enclosing four pieces of inner ring louver plates, and long sides of the four pieces of inner ring louver plates are sequentially butted to enclose a rectangular parallelepiped structure with two open ends. As shown in fig. 2, the inner-ring louver includes a plurality of inner-ring plates that are obliquely arranged and parallel to each other, the upper ends of the inner-ring plates are inclined toward the exhaust passage 3 side, and the lower ends of the inner-ring plates are inclined toward the annular cavity side. The included angle between the inner ring plate and the vertical surface is 30 degrees, and two adjacent inner rings areThe distance of the ring plate members in the vertical direction was 222 mm. The horizontal plane of the upper end of the inner ring plate is marked as x₁And the plane of the lower end of the adjacent upper-stage inner ring partition plate is marked as x₂，x₁And x₂The vertical distance between them is 56 mm.

As shown in fig. 3, the outer ring partition member 6 includes four outer ring louver plates, each long side of the four outer ring louver plates is sequentially butted to form the outer ring partition member 6 having a rectangular parallelepiped structure with two open ends, and the outer ring partition member 6 and the inner ring partition member 7 are sequentially nested from outside to inside to form the catalyst partition plate group having a zigzag cross section. As shown in fig. 2, the outer ring louver includes a plurality of outer ring plates that are disposed obliquely and parallel to each other, an upper end of each outer ring plate is inclined toward the intake passage 1, and a lower end of each outer ring plate is inclined toward the annular cavity. The included angle of the outer ring plate and the vertical surface is 30 degrees, the distance between two adjacent outer ring plates in the vertical direction is 222mm, and the horizontal plane of the upper end of the outer ring plate is marked as y₁And the plane of the lower end of the adjacent upper-stage outer ring partition plate is marked as y₂，y₁And y₂The vertical distance between them is 56 mm.

As shown in fig. 1, a flow guiding cone 8 is axially arranged in the exhaust passage 3, the flow guiding cone 8 comprises two flow guiding plates, one of the two flow guiding plates is butted and attached to the top of the exhaust passage 3, the other opposite side is butted against the two opposite sides of the bottom of the exhaust passage 3, and the two flow guiding plates and the bottom surface of the exhaust passage 3 form a triangular prism-shaped flow guiding structure.

The bottom of the shell, in which the inner area surrounded by the outer ring partition plate 6 is located, is provided with a discharging area 4 with an inverted cone structure, the bottom of the discharging area 4 is externally connected with a discharging pipeline, and the discharging pipeline is provided with a discharging valve 10.

As shown in fig. 3, the housing is a cylindrical cylinder, and two symmetrical air inlets 5 are arranged at the bottom of the housing. The top of the shell where the annular cavity is arranged is provided with four feed inlets 9 which are arranged at equal intervals.

Example 7

The embodiment provides a moving bed type blast furnace gas desulfurization device, which comprises a shell, wherein a catalyst partition plate group is arranged in the shell along the axial direction, and the catalyst partition plate group comprises an inner ring partition plate member 7 and an outer ring partition plate member 6 which are coaxially nested from inside to outside. The cubic zinc oxide catalyst 2 is filled in an annular cavity formed between the inner ring partition plate 7 and the outer ring partition plate 6, the top of the shell where the annular cavity is located is provided with a feed inlet 9, the catalyst 2 is injected from the feed inlet 9 at the top of the shell and is discharged from the bottom of the shell along the annular cavity. The cavity enclosed by the inner ring partition plate 7 is an exhaust channel 3, the cavity between the outer ring partition plate 6 and the shell is an air inlet channel 1, the bottom of the shell is provided with an air inlet 5 communicated with the air inlet channel 1, and blast furnace gas enters the air inlet channel 1 from the air inlet 5, passes through the catalyst layer and is exhausted from the exhaust channel 3.

As shown in fig. 3, the inner ring partition plate 7 is formed by enclosing four pieces of inner ring louver plates, and long sides of the four pieces of inner ring louver plates are sequentially butted to enclose a rectangular parallelepiped structure with two open ends. As shown in fig. 2, the inner-ring louver includes a plurality of inner-ring plates that are obliquely arranged and parallel to each other, the upper ends of the inner-ring plates are inclined toward the exhaust passage 3 side, and the lower ends of the inner-ring plates are inclined toward the annular cavity side. The included angle between the inner ring plate and the vertical surface is 36 degrees, and the distance between two adjacent inner ring plate in the vertical direction is 266 mm. The horizontal plane of the upper end of the inner ring plate is marked as x₁And the plane of the lower end of the adjacent upper-stage inner ring partition plate is marked as x₂，x₁And x₂The vertical distance between them is 63 mm.

As shown in fig. 3, the outer ring partition member 6 includes four outer ring louver plates, each long side of the four outer ring louver plates is sequentially butted to form the outer ring partition member 6 having a rectangular parallelepiped structure with two open ends, and the outer ring partition member 6 and the inner ring partition member 7 are sequentially nested from outside to inside to form the catalyst partition plate group having a zigzag cross section. As shown in fig. 2, the outer ring louver includes a plurality of outer ring plates that are disposed obliquely and parallel to each other, an upper end of each outer ring plate is inclined toward the intake passage 1, and a lower end of each outer ring plate is inclined toward the annular cavity. The included angle between the outer ring plate and the vertical surface is 36 degrees, the distance between two adjacent outer ring plates in the vertical direction is 266mm, and the horizontal plane of the upper end of the outer ring plate is marked as y₁Adjacent theretoThe plane of the lower end of the upper-stage outer ring partition plate is marked as y₂，y₁And y₂The vertical distance between them is 63 mm.

As shown in fig. 1, a flow guiding cone 8 is axially arranged in the exhaust passage 3, the flow guiding cone 8 comprises two flow guiding plates, one of the two flow guiding plates is butted and attached to the top of the exhaust passage 3, the other opposite side is butted against the two opposite sides of the bottom of the exhaust passage 3, and the two flow guiding plates and the bottom surface of the exhaust passage 3 form a triangular prism-shaped flow guiding structure.

The bottom of the shell, in which the inner area surrounded by the outer ring partition plate 6 is located, is provided with a discharging area 4 with an inverted cone structure, the bottom of the discharging area 4 is externally connected with a discharging pipeline, and the discharging pipeline is provided with a discharging valve 10.

As shown in fig. 3, the housing is a cylindrical cylinder, and two symmetrical air inlets 5 are arranged at the bottom of the housing. The top of the shell where the annular cavity is arranged is provided with four feed inlets 9 which are arranged at equal intervals.

Example 8

The embodiment provides a moving bed type blast furnace gas desulfurization device, which comprises a shell, wherein a catalyst partition plate group is arranged in the shell along the axial direction, and the catalyst partition plate group comprises an inner ring partition plate member 7 and an outer ring partition plate member 6 which are coaxially nested from inside to outside. The cuboid iron oxide catalyst 2 is filled in an annular cavity formed between the inner ring partition plate 7 and the outer ring partition plate 6, the top of the shell where the annular cavity is located is provided with a feed inlet 9, the catalyst 2 is injected from the feed inlet 9 at the top of the shell and is discharged from the bottom of the shell along the annular cavity. The cavity enclosed by the inner ring partition plate 7 is an exhaust channel 3, the cavity between the outer ring partition plate 6 and the shell is an air inlet channel 1, the bottom of the shell is provided with an air inlet 5 communicated with the air inlet channel 1, and blast furnace gas enters the air inlet channel 1 from the air inlet 5, passes through the catalyst layer and is exhausted from the exhaust channel 3.

As shown in fig. 3, the inner ring partition plate 7 is formed by enclosing four pieces of inner ring louver plates, and long sides of the four pieces of inner ring louver plates are sequentially butted to enclose a rectangular parallelepiped structure with two open ends. As shown in FIG. 2, the inner louvers include a plurality of louvers arranged obliquely and parallel to each otherAnd the upper end of the inner ring plate inclines to one side of the exhaust passage 3, and the lower end of the inner ring plate inclines to one side of the annular cavity. The included angle between the inner ring plate piece and the vertical surface is 43 degrees, and the distance between two adjacent inner ring plate pieces in the vertical direction is 310 mm. The horizontal plane of the upper end of the inner ring plate is marked as x₁And the plane of the lower end of the adjacent upper-stage inner ring partition plate is marked as x₂，x₁And x₂The vertical distance between them is 70 mm.

As shown in fig. 3, the outer ring partition member 6 includes four outer ring louver plates, each long side of the four outer ring louver plates is sequentially butted to form the outer ring partition member 6 having a rectangular parallelepiped structure with two open ends, and the outer ring partition member 6 and the inner ring partition member 7 are sequentially nested from outside to inside to form the catalyst partition plate group having a zigzag cross section. As shown in fig. 2, the outer ring louver includes a plurality of outer ring plates that are disposed obliquely and parallel to each other, an upper end of each outer ring plate is inclined toward the intake passage 1, and a lower end of each outer ring plate is inclined toward the annular cavity. The included angle between the outer ring plate and the vertical surface is 43 degrees, the distance between two adjacent outer ring plates in the vertical direction is 310mm, and the horizontal plane where the upper end of the outer ring plate is located is marked as y₁And the plane of the lower end of the adjacent upper-stage outer ring partition plate is marked as y₂，y₁And y₂The vertical distance between them is 70 mm.

As shown in fig. 1, a flow guiding cone 8 is axially arranged in the exhaust passage 3, the flow guiding cone 8 comprises two flow guiding plates, one of the two flow guiding plates is butted and attached to the top of the exhaust passage 3, the other opposite side is butted against the two opposite sides of the bottom of the exhaust passage 3, and the two flow guiding plates and the bottom surface of the exhaust passage 3 form a triangular prism-shaped flow guiding structure.

The bottom of the shell in which the inner area enclosed by the outer ring partition plate 6 is located is provided with a discharging area 4 with an inverted cone structure, the bottom of the discharging area 4 is externally connected with a discharging pipeline, and the discharging pipeline is provided with a discharging valve 10.

As shown in fig. 3, the housing is a cylindrical cylinder, and two symmetrical air inlets 5 are arranged at the bottom of the housing. The top of the shell where the annular cavity is arranged is provided with four feed inlets 9 which are arranged at equal intervals.

Application example

The present application example provides a method for desulfurizing blast furnace gas, in which the blast furnace gas is desulfurized by using the blast furnace gas desulfurization apparatus provided in example 6, and the blast furnace gas to be treated has a component content of H₂The S concentration was 130mg/Nm³COS concentration of 70mg/Nm³CO concentration of 25% and CO₂Concentration 19% O₂The concentration is 0.5%, the temperature is 110 ℃, and the desulfurization method specifically comprises the following steps:

the cylindrical iron oxide catalyst 2 is continuously injected into the annular cavity from the top of the shell, the catalyst 2 is discharged from the bottom of the shell, the blast furnace gas enters the gas inlet channel 1 through the gas inlet 5, passes through the outer ring partition plate 6, enters the catalyst 2 flow bed layer, is contacted with the catalyst 2 which continuously flows for desulfurization, the desulfurized blast furnace gas passes through the inner ring partition plate 7, enters the exhaust channel 3, and the blast furnace gas entering the exhaust channel 3 is led out of the shell along the surface of the flow guide plate under the action of the flow guide cone 8 and is discharged from the top of the shell.

The desulfurization rate of the desulfurization device was 99% by sampling calculation.

The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.