阅读说明：本技术 高炉煤气有机硫水解反应装置 (Organic sulfur hydrolysis reaction device for blast furnace gas ) 是由 冷廷双 赵荣志 张秋林 丁林 汤其生 于 2020-04-03 设计创作，主要内容包括：本发明提供一种高炉煤气有机硫水解反应装置,属于高炉煤气精脱硫技术领域。该装置包括中间烟道、挡流板、入口弯头、入口变径锥、气流均布板、整流格栅、反应器、水解催化剂、内部支撑梁、出口变径锥、出口弯头和声波吹灰器,中间烟道与装置入口弯头连接,挡流板在弯头内部,入口弯头与入口变径锥连接,气流均布板位于入口变径锥内,反应器与入口变径锥连接,整流格栅安装在反应器最上部,内部支撑梁安装在反应器内,催化剂放置在内部支撑梁上部,反应器内放置催化剂,每层催化剂放置间距相等,催化剂上部放置声波吹灰器,反应器通过装置出口变径锥和弯头与外部管道连接,该装置保证了后端煤气用户最终排放烟气实现二氧化硫的超低排放。(The invention provides a hydrolysis reaction device for organic sulfur in blast furnace gas, belonging to the technical field of fine desulfurization of blast furnace gas. The device comprises a middle flue, a flow baffle plate, an inlet elbow, an inlet reducing cone, an airflow uniform distribution plate, a rectifying grid, a reactor, a hydrolysis catalyst, an internal supporting beam, an outlet reducing cone, an outlet elbow and a sound wave soot blower, wherein the middle flue is connected with the inlet elbow of the device, the flow baffle plate is arranged inside the elbow, the inlet elbow is connected with the inlet reducing cone, the airflow uniform distribution plate is positioned in the inlet reducing cone, the reactor is connected with the inlet reducing cone, the rectifying grid is arranged at the uppermost part of the reactor, the internal supporting beam is arranged in the reactor, the catalyst is arranged at the upper part of the internal supporting beam, the catalyst is arranged in the reactor, the arrangement intervals of each layer of catalyst are equal, the sound wave soot blower is arranged at the upper part of the catalyst, the device ensures that the final emission of the flue gas of a rear-end gas user realizes the ultralow emission of sulfur dioxide.)

1. The utility model provides a blast furnace gas organosulfur hydrolysis reaction device which characterized in that: comprises a middle flue (1), a flow baffle plate (2), an inlet elbow (3), an inlet reducing cone (4), an airflow uniform distribution plate (5), a rectifying grating (6), a reactor (7), a hydrolysis catalyst (8), an internal supporting beam (9), an outlet reducing cone (10), an outlet elbow (11) and a sound wave soot blower (12), wherein the middle flue (1) is connected with the inlet elbow (3), the flow baffle plate (2) is arranged inside the inlet elbow (3), the inlet elbow (3) is connected with the inlet reducing cone (4), the airflow uniform distribution plate (5) is arranged in the inlet reducing cone (4), the lower part of the inlet reducing cone (4) is connected with the reactor (7), the rectifying grating (6) is arranged at the uppermost part of the reactor (7), the internal supporting beam (9) is arranged in the reactor (7), the hydrolysis catalyst (8) is arranged at the upper part of the internal supporting beam (9), no less than one layer of catalyst is arranged in the reactor (7), the catalyst placing intervals of each layer are equal, the upper part of the hydrolysis catalyst (8) is provided with a sound wave soot blower (12), and the reactor (7) is connected with an external pipeline through an outlet reducing cone (10) and an outlet elbow (11) at the lower part.

2. The blast furnace gas organosulfur hydrolysis reaction apparatus according to claim 1, characterized in that: the distance between each layer of the hydrolysis catalyst (8) is 1.5-2.8 m.

3. The blast furnace gas organosulfur hydrolysis reaction apparatus according to claim 1, characterized in that: the number of the acoustic wave soot blowers (12) on each layer of the hydrolysis catalyst (8) is 2-4.

4. The blast furnace gas organosulfur hydrolysis reaction apparatus according to claim 1, characterized in that: the number of layers of the rectifying grating (6) is one, and under the action of the rectifying grating (6), a coal gas flow line and the interface of the reactor (7) form an included angle of 90 degrees.

5. The blast furnace gas organosulfur hydrolysis reaction apparatus according to claim 1, characterized in that: the number of the flow baffle plates (2) is 2-4, the length is 0.2-1.5m, the width is 0.5-3.5m, and the thickness is 6-12 mm.

6. The blast furnace gas organosulfur hydrolysis reaction apparatus according to claim 1, characterized in that: the number of the air flow uniform distribution plates (5) is 4-8, the length is 1-5m, the width is 0.5-5m, and the thickness is 6-12 mm.

7. The blast furnace gas organosulfur hydrolysis reaction apparatus according to claim 1, characterized in that: the sound wave soot blower (12) runs at regular time to sweep and remove dust deposited on the surface of the hydrolysis catalyst (8).

Technical Field

The invention relates to the technical field of blast furnace gas fine desulfurization, in particular to a blast furnace gas organic sulfur hydrolysis reaction device.

Background

Blast furnace gas is combustible gas generated in the blast furnace ironmaking process, can be used as fuel, and is widely applied to working procedures such as boilers, blast furnace hot blast furnaces, steelmaking heating furnaces and the like. The blast furnace gas comprises the following main components: CO, CO₂、N₂And sulfides, etc., wherein the sulfides are mainly COS, H₂S is the main. The total sulfur content in the blast furnace gas is generally 60-100mg/Nm³The organic sulfur accounts for 3/4, and the inorganic sulfur accounts for 1/4. Inorganic sulfur can be easily removed from the gas by caustic washing.

Because the carbonyl sulfide in the blast furnace gas is known later, the components, the content, the harm and the removal technology of the carbonyl sulfide have not been paid attention. At present, no technology and corresponding process equipment suitable for removing carbonyl sulfide in blast furnace gas in the steel industry exist in China. Under the circumstances, it is necessary to research the reaction characteristics of carbonyl sulfide and develop a process equipment capable of effectively converting carbonyl sulfide in blast furnace gas, and the result is to further reduce SO₂The discharge provides effective technical support and has important practical significance.

For example, the Chinese invention patent: CN110527564A "blast furnace gas desulfurizing tower", the equipment that the patent described is a kind of coal gas alkali wash and takes off the equipment, and first grade, second grade desulfurizing tower are equipped with the spray gun, spray the buck that is used for the desulfurization, and this kind of equipment can get rid of the inorganic sulphur in the coal gas and dechlorinate, can not realize getting rid of organic sulphur in the coal gas.

Aiming at the organic sulfur desulfurization treatment at the front end of blast furnace gas, no successful case falls to the ground at present. Some enterprises set alkaline washing facilities at the rear end of a blast furnace TRT, and most of H in the coal gas after alkaline washing₂S and chlorine can be removed and organic sulfur cannot be removed effectively. The flue gas discharged by the working procedures of boilers, hot blast furnaces, steel-making heating furnaces and the like taking blast furnace gas as fuel needs to realize ultralow emission, and a flue gas purification device is still required to be arranged at the tail end. Leads to the dispersion of the flue gas purification devices of enterprises, large occupied area, high investment, high operation cost and difficult acceptance of steel enterprises.

Disclosure of Invention

The invention provides a hydrolysis reaction device for organic sulfur in blast furnace gas, which aims to solve the problems that organic sulfur in the blast furnace gas cannot be effectively removed and the like.

The device includes middle flue, keep off and flow the board, the entry elbow, entry reducing cone, the even distribution of air flow board, the rectification grid, the reactor, the catalyst hydrolysises, inside supporting beam, export reducing cone, export elbow and sound wave soot blower, middle flue is connected with the entry elbow, it is inside at the entry elbow to keep off and flow the board, the entry elbow is connected with entry reducing cone, the even distribution of air flow board is located entry reducing cone, the reactor is connected with entry reducing cone, the rectification grid is installed at the top at the reactor, inside supporting beam installs in the reactor, the catalyst of hydrolysising is placed on inside supporting beam upper portion, place multilayer catalyst in the reactor, the interval is equal for placing on every layer of catalyst, hydrolysis catalyst upper portion sets up the sound wave soot blower, the reactor passes through the most terminal export reducing cone of device and export elbow and.

Wherein the distance between every two layers of the hydrolysis catalyst is 1.5-2.8 m.

The number of the acoustic wave soot blowers on each layer of hydrolysis catalyst is 2-4.

The number of the layers of the rectifying grating is 1, and under the action of the rectifying grating, a gas flow line and the interface of the reactor form an included angle of 90 degrees.

The number of the flow baffle plates is 2-4, the length is 0.2-1.5m, the width is 0.5-3.5m, and the thickness is 6-12 mm.

The number of the air flow uniform distribution plates is 4-8, the length is 1-5m, the width is 0.5-5m, and the thickness is 6-12 mm.

The sound wave soot blower runs at regular time to sweep and remove the dust deposited on the surface of the catalyst.

The technical scheme of the invention has the following beneficial effects:

the invention combines the process flow of blast furnace gas in the steel industry at present to develop a carbonyl sulfide hydrolysis reaction device, and solves the problem of difficult treatment of organic sulfur in the blast furnace gas at the source on the basis of not influencing TRT power generation. The total sulfur in the coal gas is controlled below a certain level by utilizing a hydrogen sulfide removal system after TRT power generation, so that the blast furnace gas of the iron and steel enterprise is used by downstream usersThe deep purification is achieved, the problem that the smoke emission of downstream users of blast furnace gas in the industry exceeds standard is solved, and the method has higher advantages compared with tail end treatment. And the blast furnace gas can be contacted with the hydrolysis catalyst more efficiently, and after the blast furnace gas is subjected to catalytic hydrolysis, S in the gas is basically converted into H₂And S, after alkali washing, the total sulfur in the coal gas can be greatly reduced, and the final emission of the flue gas of a rear-end coal gas user can be ensured to realize the ultralow emission of sulfur dioxide.

Drawings

Fig. 1 is a schematic structural view of a blast furnace gas organosulfur hydrolysis reaction apparatus according to the present invention.

Wherein: 1-middle flue, 2-baffle plate, 3-inlet elbow, 4-inlet reducing cone, 5-airflow uniform distribution plate, 6-rectification grid, 7-reactor, 8-hydrolysis catalyst, 9-internal supporting beam, 10-outlet reducing cone, 11-outlet elbow and 12-sound wave soot blower.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

The invention provides a blast furnace gas organic sulfur hydrolysis reaction device.

As shown in fig. 1, the device comprises a middle flue 1, a flow baffle 2, an inlet elbow 3, an inlet reducing cone 4, an air flow uniform distribution plate 5 and a rectification grid 6, reactor 7, hydrolysis catalyst 8, internal supporting beam 9, export reducing cone 10, export elbow 11 and sound wave soot blower 12, middle flue 1 is connected with device entry elbow 3, keep off and flow board 2 inside entry elbow 3, entry elbow 3 is connected with entry reducing cone 4, the even distribution of air flow board 5 is located entry reducing cone 4, reactor 7 is connected with entry reducing cone 4, rectifier grid 6 installs at reactor 7 uppermost, internal supporting beam 9 installs in reactor 7, hydrolysis catalyst 8 places on internal supporting beam 9 upper portion, place the multilayer catalyst in reactor 7, the interval is equal for placing every layer of catalyst, sound wave soot blower 12 is placed on 8 upper portions of hydrolysis catalyst, reactor 7 is connected with the outside pipeline through the export reducing cone 10 and the export elbow 11 of device tail end.

Typically, the hydrolysis catalyst 8 has a layer spacing of from 1.5 to 2.8 m.

The number of the acoustic wave soot blowers 12 on each layer of the hydrolysis catalyst 8 is 2-4.

The rectifying grating 6 is used for changing the flow direction angle of the coal gas, the number of layers is 1, and under the action of the rectifying grating 6, the coal gas flow line and the interface of the reactor 7 form an included angle of 90 degrees.

The flow baffle 2 is used for homogenizing the inlet coal gas flow field, and is 2-4 blocks, with the length of 0.2-1.5m, the width of 0.5-3.5m and the thickness of 6-12 mm.

The gas flow uniform distribution plate 5 is used for uniformly distributing gas, so that the gas entering the reactor is uniformly distributed on the interface of the reactor, the number of the gas is 4-8, the length of the gas is 1-5m, the width of the gas is 0.5-5m, and the thickness of the gas is 6-12 mm.

The sound wave soot blower 12 runs regularly to sweep and remove the dust deposited on the surface of the catalyst 8.

In the specific design, blast furnace gas enters through an inlet of the device, is uniformly distributed on the whole interface of the reactor 7 under the action of a flue flow baffle plate 2 and an airflow uniform distribution plate 5, the gas streamline forms an included angle of 90 degrees with the interface of the reactor under the action of a flow rectification grid 6, the gas passes through 2-4 layers of hydrolysis catalysts 8 layer by layer along the direction of the reactor 7, under the action of the hydrolysis catalysts 8, COS in the gas and water vapor in the gas are subjected to the action of the COS in the gas and the water vapor in the gas to be finally hydrolyzed into H₂And S, after the gas subjected to catalytic hydrolysis passes through the device, the gas is connected with a gas pipe network through an outlet elbow 11 pipeline, and the acoustic wave soot blower 12 operates at regular time to sweep and remove dust deposited on the surface of the catalyst 8.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.