阅读说明：本技术 一种高炉煤气硫资源利用装置 (Blast furnace gas sulfur resource utilization device ) 是由 倪彪 黄樊 张俊 于 2021-08-12 设计创作，主要内容包括：本发明实施例公开了一种高炉煤气硫资源利用装置。本发明的高炉煤气硫资源利用装置,包括：预处理单元、吸附/脱附单元、输送单元、加热单元、催化单元和冷凝回收单元；所述预处理单元的进口与待处理的高炉煤气相导通,所述预处理单元用于对待处理的高炉煤气进行脱氯、降温除水、升温除湿、过滤脱氧；所述吸附/脱附单元的进口与所述预处理单元的出口相导通,所述吸附/脱附单元用于对高炉煤气的含硫物质进行分离；所述输送单元设置在所述吸附/脱附单元的吸附出气口处,所述输送单元用于将洁净煤气输送至用气点。本发明的高炉煤气硫资源利用装置可实现对高炉煤气的低投资、低能耗脱硫,并对含硫物种资源加以利用。(The embodiment of the invention discloses a blast furnace gas sulfur resource utilization device. The blast furnace gas sulfur resource utilization device of the invention comprises: the device comprises a pretreatment unit, an adsorption/desorption unit, a conveying unit, a heating unit, a catalytic unit and a condensation recovery unit; the inlet of the pretreatment unit is communicated with the gas phase of the blast furnace coal to be treated, and the pretreatment unit is used for dechlorinating, cooling to remove water, heating to dehumidify and filtering to deoxidize the blast furnace coal to be treated; the inlet of the adsorption/desorption unit is communicated with the outlet of the pretreatment unit, and the adsorption/desorption unit is used for separating sulfur-containing substances of blast furnace gas; the conveying unit is arranged at an adsorption gas outlet of the adsorption/desorption unit and used for conveying clean coal gas to a gas using point. The blast furnace gas sulfur resource utilization device can realize low-investment and low-energy-consumption desulfurization of blast furnace gas and utilize sulfur-containing species resources.)

1. A blast furnace gas sulfur resource utilization device is characterized by comprising: the device comprises a pretreatment unit, an adsorption/desorption unit, a conveying unit, a heating unit, a catalytic unit and a condensation recovery unit;

the inlet of the pretreatment unit is communicated with the gas phase of the blast furnace coal to be treated, and the pretreatment unit is used for dechlorinating, cooling to remove water, heating to dehumidify and filtering to deoxidize the blast furnace coal to be treated;

the inlet of the adsorption/desorption unit is communicated with the outlet of the pretreatment unit, and the adsorption/desorption unit is used for separating sulfur-containing substances of blast furnace gas;

the conveying unit is arranged at an adsorption gas outlet of the adsorption/desorption unit and is used for conveying clean coal gas to a gas using point;

the heating unit is arranged at a desorption gas outlet of the adsorption/desorption unit and is used for heating sulfur-containing waste gas;

the catalytic unit is communicated with a desorption gas outlet of the adsorption/desorption unit and is used for generating a sulfur compound in the sulfur-containing waste gas into a gaseous sulfur simple substance;

the inlet of the condensation recovery unit is communicated with the outlet of the catalytic unit, and the condensation recovery unit is used for cooling and collecting sulfur.

2. The blast furnace gas sulfur resource utilization device according to claim 1, wherein the pretreatment unit comprises: the device comprises a dechlorination module, a cooling module, a dehumidification module and a filtering deoxidation module;

the blast furnace gas to be treated is sequentially fed into the dechlorinating module, the cooling module, the dehumidifying module and the filtering and deoxidizing module and then enters the adsorption/desorption module;

and the cooling module includes: the first-stage cooling submodule and the second-stage cooling submodule are connected in series;

the dehumidification module includes: the system comprises a pre-dehumidification submodule and a heating and dehumidification submodule, wherein the pre-dehumidification submodule and the heating and dehumidification submodule are connected in series.

3. The blast furnace gas sulfur resource utilization device of claim 2, wherein the first stage cooling submodule comprises: the system comprises a first heat exchanger, a cold water tower and a first cold source;

the blast furnace gas to be treated is introduced into the first heat exchanger for cooling, the cooling tower is used for providing cooling water for cooling for the first heat exchanger, and the first cold source is used for cooling water flowing back into the cooling tower.

4. The blast furnace gas sulfur resource utilization device according to claim 3, wherein the first cold source is air at the periphery of the cooling tower.

5. The blast furnace gas sulfur resource utilization apparatus according to claim 4, wherein the dechlorination module comprises: SiO 2₂Dechlorinating balls;

the SiO₂The dechlorination balls are formed by impregnating alkali metal, and the SiO is₂Dechlorination ballThe SiO is laminated in the dechlorination module₂The dechlorination ball is used for dechlorinating blast furnace gas passing through the dechlorination ball and ensuring that the chlorine content in the dechlorinated gas is lower than 1mg/m³。

6. The blast furnace gas sulfur resource utilization device according to claim 5, wherein the catalytic unit comprises: an active ingredient and a carrier;

the active ingredients are one or more of Cu, Fe, Mn, Co, Ce, V and Zn, and the loading amount of the active ingredients is 1-10 wt%;

the carrier of the active component is honeycomb cordierite, and the mesh number is less than 200 meshes.

7. The blast furnace gas sulfur resource utilization device according to claim 6, wherein the heating unit is an electric heater.

Technical Field

The embodiment of the invention relates to the technical field of energy conservation and environmental protection, in particular to a blast furnace gas sulfur resource utilization device.

Background

The blast furnace gas is a byproduct of iron making in blast furnaces of iron and steel enterprises, the yield of iron per ton is about 1500-.

The blast furnace gas desulfurization and purification is an environmental protection and emission reduction industry which is mainly promoted by the nation, and the latest policy 'opinion about promoting and implementing ultra-low emission of the steel industry' requires that the emission concentration of SO2 in gas combustion flue gas is lower than 50mg/m 3. Blast furnace gas as a low-calorific-value gas is generally sent to a blast furnace hot blast stove, a steel rolling heating furnace, a gas power generation unit and other user units to be used as fuel. As the user points are scattered and the number of users is large, the investment for independently constructing the user point desulphurization device is larger, the operation cost is higher, and the management is complex. Therefore, the investment and operation cost can be greatly reduced by adopting a front-end centralized desulfurization mode.

At present, the blast furnace gas desulfurization method mainly comprises wet desulfurization. For example, patent CN206927863U discloses a method for removing hydrogen sulfide from blast furnace gas, in which the blast furnace gas is introduced into an alkaline washing tower, and the hydrogen sulfide in the blast furnace gas is removed by the action of alkaline washing, but it is difficult to effectively remove organic sulfur in the gas. For example, CN110643395A discloses a fine desulfurization process for blast furnace gas, which employs a catalytic converter to convert COS into H2S, and then absorbs H2S through an alkaline washing desulfurization tower. The method has the defects that the desulfurization process flow is too long, a large amount of sulfur-containing wastewater is generated in the desulfurization process, and secondary pollution is caused. In addition, dry desulfurization processes have also been reported. For example, patent CN110252069A discloses a dry desulfurization method for blast furnace gas, which can adsorb organic sulfur and inorganic sulfur species by using a microcrystalline material, and can adsorb and remove sulfides in blast furnace gas in one step, but has the disadvantages of large loading capacity of the microcrystalline adsorbing material, high investment, large bed pressure loss, high operation energy consumption, and the like. For example, patent CN112322363A discloses a dry desulfurization method for blast furnace gas, in which the adsorbent is arranged in a staggered distribution, rotation and waveform manner, so as to effectively reduce the loading capacity of the adsorbent, but the process still has the problems of low utilization rate of the adsorbent, excessive pressure loss of the adsorbent bed, and high energy consumption in operation.

Disclosure of Invention

The embodiment of the invention provides a blast furnace gas sulfur resource utilization device, which adopts a new process design idea to realize low-investment and low-energy-consumption desulfurization of blast furnace gas and utilize sulfur-containing species resources.

The embodiment of the invention provides a blast furnace gas sulfur resource utilization device, which comprises: the device comprises a pretreatment unit, an adsorption/desorption unit, a conveying unit, a heating unit, a catalytic unit and a condensation recovery unit;

the inlet of the pretreatment unit is communicated with the gas phase of the blast furnace coal to be treated, and the pretreatment unit is used for dechlorinating, cooling to remove water, heating to dehumidify and filtering to deoxidize the blast furnace coal to be treated;

the inlet of the adsorption/desorption unit is communicated with the outlet of the pretreatment unit, and the adsorption/desorption unit is used for separating sulfur-containing substances of blast furnace gas;

the conveying unit is arranged at an adsorption gas outlet of the adsorption/desorption unit and is used for conveying clean coal gas to a gas using point;

the heating unit is arranged at a desorption gas outlet of the adsorption/desorption unit and is used for heating sulfur-containing waste gas;

the catalytic unit is communicated with a desorption gas outlet of the adsorption/desorption unit and is used for generating a sulfur compound in the sulfur-containing waste gas into a gaseous sulfur simple substance;

the inlet of the condensation recovery unit is communicated with the outlet of the catalytic unit, and the condensation recovery unit is used for cooling and collecting sulfur.

By adopting the technical scheme, on one hand, resource utilization of sulfur-containing substances is realized, the pollution amount to air is reduced, on the other hand, collection and utilization of coal gas are realized, the utilization rate of the coal gas is improved, meanwhile, centralized desulfurization is also realized, and the desulfurization efficiency is improved.

In one possible approach, the pre-processing unit comprises: the device comprises a dechlorination module, a cooling module, a dehumidification module and a filtering deoxidation module;

the blast furnace gas to be treated is sequentially fed into the dechlorinating module, the cooling module, the dehumidifying module and the filtering and deoxidizing module and then enters the adsorption/desorption module;

and the cooling module includes: the first-stage cooling submodule and the second-stage cooling submodule are connected in series;

the dehumidification module includes: the system comprises a pre-dehumidification submodule and a heating and dehumidification submodule, wherein the pre-dehumidification submodule and the heating and dehumidification submodule are connected in series.

By adopting the technical scheme, on one hand, the treatment of sulfur-containing substances and the recycling of sulfur resources are realized, on the other hand, the pollution to the atmosphere is reduced, and meanwhile, compared with the existing blast furnace gas treatment device, the device has the advantages of simple structure, low manufacturing cost and reasonable process layout, and relatively simple process steps are promoted at the cost of lower energy consumption, so that the waste gas treatment and the sulfur recycling of the blast furnace gas are realized, and the investment cost and the operation cost are also reduced.

In one possible implementation, the first stage cooling submodule includes: the system comprises a first heat exchanger, a cold water tower and a first cold source;

the blast furnace gas to be treated is introduced into the first heat exchanger for cooling, the cooling tower is used for providing cooling water for cooling for the first heat exchanger, and the first cold source is used for cooling water flowing back into the cooling tower.

The first-stage cooling submodule adopting the technical scheme has the advantages of relatively simple structure, convenience in maintenance and reduced operation cost.

In one possible embodiment, the first heat sink is air around the cooling tower.

By adopting the technical scheme, the heated water returned to the cooling tower is cooled by utilizing the air, so that a cold source is not required to be additionally provided in the cooling process, and the overall energy utilization efficiency can be further improved.

In one possible approach, the dechlorination module comprises: SiO 2₂Dechlorinating balls;

the SiO₂The dechlorination balls are formed by impregnating alkali metal, and the SiO is₂Dechlorination balls are laminated in the dechlorination module, and the SiO is₂The dechlorination ball is used for dechlorinating blast furnace gas passing through the dechlorination ball and ensuring that the chlorine content in the dechlorinated gas is lower than 1mg/m³。

By adopting the technical scheme, on one hand, SiO is utilized₂The desulfurization effect of the dechlorination ball is good, and on the other hand, the size of the desulfurization module is reduced, and the operation cost is reduced.

In one possible solution, the catalytic unit comprises: an active ingredient and a carrier;

the active ingredients are one or more of Cu, Fe, Mn, Co, Ce, V and Zn, and the loading amount of the active ingredients is 1-10 wt%;

the carrier of the active component is honeycomb cordierite, and the mesh number is less than 200 meshes.

By adopting the technical scheme, the catalytic effect is more ideal, the reaction is more sufficient, and the catalytic efficiency can meet the requirement.

In one possible solution, the heating unit is an electric heater.

By adopting the technical scheme, the whole device is smaller in volume, higher in heating adjustability and easier to automatically control the blast furnace gas sulfur resource utilization device.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of a blast furnace gas sulfur resource utilization apparatus according to an embodiment of the present invention;

fig. 2 is a schematic view of the overall structure of a blast furnace gas sulfur resource utilization device according to a second embodiment of the present invention.

Reference numbers in the figures:

1. a pre-processing unit; 110. a dechlorination module; 120. a cooling module; 1201. a first heat exchanger; 1202. A water cooling tower; 1203. a second heat exchanger; 1024. a lithium bromide unit; 130. a dehumidification module; 1301. a pre-dehumidification submodule; 1302. a temperature-raising and dehumidifying submodule; 140. a filtration and deoxidation module; 1401. a filter deoxygenator; 2. an adsorption/desorption unit; 201. rotating the adsorption bed; 202. a desorption heat exchanger; 203. a desorption fan; 204. a flow meter; 3. a heating unit; 4. a catalytic unit; 5. a condensation recovery unit; 501. a condensation recoverer; 6. a conveying unit.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the indicated orientations and positional relationships based on the drawings for convenience in describing and simplifying the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication connection; either directly or indirectly through intervening media, either internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

Fig. 1 is a schematic view of the overall structure of a blast furnace gas sulfur resource utilization device according to a first embodiment of the present invention, and fig. 2 is a schematic view of the overall structure of a blast furnace gas sulfur resource utilization device according to a second embodiment of the present invention.

Example one

As shown in fig. 1, the blast furnace gas sulfur resource utilization apparatus according to the embodiment of the present invention includes: a pretreatment unit 1, an adsorption/desorption unit 2, a transport unit 6, a heating unit 3, a catalytic unit 4, and a condensation recovery unit 5.

The pretreatment unit 1 comprises a plurality of functional submodules, and different functions such as dechlorination, cooling and dewatering, heating and dehumidifying, filtering and degassing and the like are realized respectively. The inlet of the pretreatment unit 1 is communicated with the gas phase of blast furnace coal to be treated.

The inlet of the adsorption/desorption unit 2 is communicated with the outlet of the pretreatment unit 1, and the adsorption/desorption unit 2 comprises at least two sub-modules, such as an adsorption module and a desorption module, and is used for separating sulfur-containing substances of blast furnace gas. It should be noted that the desorption outlet of the adsorption/desorption unit 2 is used for discharging sulfur-containing waste gas for desulfurization, and the other is a clean gas recovery port for discharging and transporting the desulfurized gas to a gas utilization point.

The conveying unit 6 is arranged at the adsorption gas outlet of the adsorption/desorption unit 2, and the conveying unit 6 is used for conveying clean coal gas to a gas utilization point.

The heating unit 3 is arranged at the desorption gas outlet of the adsorption/desorption unit 2, and the heating unit 3 is used for heating the sulfur-containing waste gas.

The catalytic unit 4 is communicated with a desorption gas outlet of the adsorption/desorption unit 2, and the catalytic unit 4 is used for generating the sulfur compound in the sulfur-containing waste gas into a gaseous sulfur simple substance.

The inlet of the condensation recovery unit 5 is communicated with the outlet of the catalytic unit 4, and the condensation recovery unit 5 is used for cooling and collecting sulfur.

The blast furnace gas sulfur resource utilization device has the principle that firstly, blast furnace gas is subjected to primary treatment to prepare for the adsorption/desorption process; then, the blast furnace gas is divided into two parts through the adsorption and desorption processes, one part of the blast furnace gas is changed into concentrated sulfur-containing waste gas, the sulfur resource is reduced and collected, the sulfur resource is recycled, and the other part of the blast furnace gas is recycled after the processes of desulfurization and the like.

By adopting the technical scheme, on one hand, resource utilization of sulfur-containing substances is realized, the pollution amount to air is reduced, on the other hand, collection and utilization of coal gas are realized, and the utilization rate of the coal gas is improved.

Example two

This example is an alternative embodiment of the blast furnace gas sulfur resource utilization apparatus of the first example. As shown in fig. 2, in the present embodiment, the pretreatment unit 1 includes a dechlorination module 110, a temperature reduction module 120, a dehumidification module 130, and a filtered deoxidation module 140. Wherein the inlet of the pretreatment unit 1 receives blast furnace gas to be treated, the received blast furnace gas firstly enters a dechlorination module 110, and the dechlorination module 110 is used for removing chlorine-containing substances. After the blast furnace gas passes through the dechlorination module 110, the cooling module 120 is required to cool, unsaturated water in the gas can be condensed into supersaturated liquid water through cooling, and then the supersaturated liquid water is removed through the precision demister, so that the relative humidity of the gas after the subsequent reheating process is reduced, and the adsorption efficiency of the adsorption/desorption unit 2 (such as a molecular sieve) used at the back is further ensured.

Because the cold quantity that needs to cool down is too big, the temperature needs to be reduced to very low, adopt the second grade cooling method, specifically are: the cooling module 120 includes a first stage cooling sub-module and a second stage cooling sub-module. Wherein, the first-stage cooling submodule adopts water cooling to cool. One possible first stage cool down submodule includes: the system comprises a first heat exchanger 1201, a cold water tower and a first cold source; the blast furnace gas to be treated is introduced into the first heat exchanger 1201 to be cooled, low-temperature water is supplied through the cooling tower, the low-temperature water flows into the first heat exchanger 1201, the blast furnace gas exchanges heat with the low-temperature water in the first heat exchanger 1201, the temperature of the blast furnace gas is reduced to about 40 ℃, and the first cold source is used for cooling the heated water flowing back to the cooling tower so as to realize the recycling of the cooling water. The first-stage cooling submodule adopting the technical scheme has the advantages of relatively simple structure, convenience in maintenance and reduced operation cost. The temperature of the water after heat exchange of the first-stage cooling submodule rises, and the water can enter the cold water tower again for recycling after being cooled. In addition, a possible first heat sink is air, i.e. flowing air around the cooling tower, and the air is used as a heat sink to cool the warm water flowing into the cooling tower. By adopting the technical scheme, the heated water returned to the cooling tower is cooled by utilizing the air, so that a cold source is not required to be additionally provided in the cooling process, and the overall energy utilization efficiency can be further improved.

After passing through the first-stage cooling submodule, the blast furnace gas with the temperature reduced to about 40 ℃ enters the second-stage cooling submodule, the second-stage cooling submodule comprises a second heat exchanger 1203 and a lithium bromide unit 1024, the blast furnace gas after being subjected to the first-stage cooling enters the second heat exchanger 1203, the second-stage cooling is realized, and the temperature is reduced to about 20 ℃.

Through the second grade cooling, on the one hand, remove most moisture in the blast furnace gas through the cooling, and on the other hand, this cooling mode can make holistic energy consumption very low, can reduce investment cost simultaneously.

Furthermore, blast furnace gas subjected to dechlorination and temperature reduction still contains a lot of moisture, and subsequent catalytic reaction is influenced. For this reason, further dehumidification of the blast furnace gas is required, and the blast furnace gas is passed into the dehumidification module 130. In the dehumidification module 130, since the air at a higher temperature contains higher water, in order to discharge the water as much as possible and thus reduce the relative humidity of the air, the dehumidification module 130 is divided into two modules: a pre-dehumidification sub-module 1301 and a warming dehumidification sub-module 1302. The pre-dehumidification submodule 1301 is used for performing dehumidification pretreatment on the blast furnace gas, and the heating and dehumidification submodule 1302 is used for heating the blast furnace gas to raise the temperature to 35-80 ℃ for dehumidification, so that the humidity of the blast furnace gas is reduced to be below 80%.

The blast furnace gas is dehumidified and then delivered to the filtering and deoxidizing module 140, and the particulate matters and the like in the blast furnace gas are treated to ensure that the content of the particulate matters is less than 5mg/m³The oxygen content is less than 0.1%. One possible filtered deoxygenation module 140 includes: at least two parallel filtered deoxygenators 1401. The blast furnace gas is filtered and deoxidized, and then is conveyed to the adsorption/desorption unit 2, and the adsorption/desorption unit 2 is used for dechlorinating and shunting the blast furnace gas, namely separating sulfur-containing substances in the blast furnace gas for resource utilization and recovering the purified blast furnace gas. One possible adsorption/desorption unit 2 comprises: a rotary adsorption bed 201, a desorption heat exchanger 202, a desorption fan 203 and a flow meter 204. After entering the adsorption port of the rotary adsorption bed 201, the blast furnace gas is adsorbed by the rotary adsorption bed 201, then nitrogen heated by the desorption heat exchanger 202 is introduced into the rotary adsorption bed 201, and after entering the desorption functional zone of the rotary adsorption bed 201, the nitrogen desorbs the sulfur-containing substances, so that the purpose of separating the sulfur-containing substances from the clean blast furnace gas is achieved.

The clean blast furnace gas is conveyed to a gas utilization point of the blast furnace gas by the conveying unit 6 and then is conveyed to the gas utilization point by the conveying belt unit for use, so that the resource is recycled. One possible gas adsorbing/desorbing substance is H₂S and COS at this pointThe sulfur-containing waste gas needs to be input with a certain flow of air, and is selectively oxidized to generate elemental sulfur, and the specific chemical reaction formula is as follows:

COS+H₂O＝CO₂+H₂S

2H₂S+O₂＝2H₂O+2S

the flow rate of this portion of air is detected by the flow meter 204. The sulfur-containing off-gas mixed with air is fed into the heating unit 3. The sulfur-containing exhaust gas from the heating unit 3 is sent to the catalytic unit 4, and is reduced in the catalytic unit 4 to form air containing gaseous elemental sulfur.

The air containing sulfur simple substance is sent to the condensation recovery unit 5, and the condensation recovery unit 5 is used for cooling down the sulfur-containing gas to desublimate the sulfur-containing gas into the simple substance. One possible condensate recovery unit 5 comprises: at least two parallel condensation recoverers 501, which is because the currently adopted single condensation recoverer 501 mostly blocks the heat exchanger due to condensed sulfur simple substance condensing on the heat exchanger. The sulfur is recovered by the condensation recovery unit 5, and the air from which the elemental sulfur is removed is discharged through a chimney.

By adopting the technical scheme, on one hand, the treatment of sulfur-containing substances and the recycling of sulfur resources are realized, on the other hand, the pollution to the atmosphere is reduced, and meanwhile, compared with the existing blast furnace gas treatment device, the device has the advantages of simple structure, low manufacturing cost and reasonable process layout, and relatively simple process steps are promoted at the cost of lower energy consumption, so that the waste gas treatment and the sulfur recycling of the blast furnace gas are realized, and the investment cost and the operation cost are also reduced.

Optionally, in the blast furnace gas sulfur resource utilization apparatus in this embodiment, the dechlorination module 110 includes: SiO 2₂And (4) dechlorinating the balls. SiO 2₂The dechlorination balls are formed by impregnating alkali metals, SiO₂Dechlorination balls laminated in dechlorination module 110, SiO₂The dechlorination ball is used for dechlorinating blast furnace gas passing through the dechlorination ball and ensuring that the chlorine content in the dechlorinated gas is lower than 1mg/m³。

By adopting the technical scheme, on one hand, SiO is utilized₂Good desulfurization effect of dechlorination ballsOn the other hand, the aim is to reduce the volume of the desulfurization module and reduce the running cost.

Optionally, in the blast furnace gas sulfur resource utilization apparatus in this embodiment, the catalytic unit 4 includes: an active ingredient and a carrier. Wherein the active component is one or more of Cu, Fe, Mn, Co, Ce, V and Zn, the loading amount of the active component is 1-10 wt%, and the carrier of the active component is honeycomb cordierite, and the mesh number is less than 200 meshes.

By adopting the technical scheme, the catalytic effect is more ideal, the reaction is more sufficient, and the catalytic efficiency can meet the requirement.

Optionally, in the blast furnace gas sulfur resource utilization apparatus in this embodiment, the heating unit is an electric heater.

By adopting the technical scheme, the whole device is smaller in volume, higher in heating adjustability and easier to automatically control the blast furnace gas sulfur resource utilization device.

In the present invention, unless otherwise explicitly specified or limited, the first feature "on" or "under" the second feature may be directly contacting the first feature and the second feature or indirectly contacting the first feature and the second feature through an intermediate.

Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lower level than the second feature.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.