CN217511483U - Blast furnace gas fine desulfurization purification device - Google Patents
Blast furnace gas fine desulfurization purification device Download PDFInfo
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- CN217511483U CN217511483U CN202220838989.3U CN202220838989U CN217511483U CN 217511483 U CN217511483 U CN 217511483U CN 202220838989 U CN202220838989 U CN 202220838989U CN 217511483 U CN217511483 U CN 217511483U
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Abstract
The utility model relates to a blast furnace gas fine desulfurization purifier, through leading-in gravity dust collector with blast furnace gas, go into the sack cleaner behind the gravity dust collector dust removal, blast furnace gas after the dust removal is handled gets into the first reaction tower that contains hydrogenolysis catalytic protection agent, thereby absorb most impurity and the comdenstion water in the blast furnace gas, reach the purpose of titanium base hydrogenolysis catalyst in the follow-up second reaction tower of protection, blast furnace gas after the conversion of second reaction tower gets into the desulfurizing tower of multiunit mutual parallel operation, and then when the desulfurizer in the desulfurizing tower needs to be changed, can keep two desulfurizing tower parallel operation to ensure desulfurizing device's continuous operation, the technology high efficiency stability of organic sulphur conversion and inorganic sulphur desorption has been guaranteed simultaneously, full play is separately technology to organic sulphur, inorganic sulphur desorption technical economic advantage.
Description
Technical Field
The utility model relates to a blast furnace gas desulphurization unit, concretely relates to blast furnace gas fine desulphurization purifier.
Background
Blast furnace gas is a byproduct generated in the iron-making process, the blast furnace gas is used for directly discharging flue gas after combustion before ultralow discharge of iron and steel enterprises is realized, and the concentration of SO2 in the flue gas is less than 200mg/Nm 3 Meets the requirements of environmental protection and discharge. However, after ultra-low emissions are achieved, the sulfur dioxide emission limit is reduced to 35mg/Nm 3 This makes the emission of all gas points heated by the combustion of blast furnace gas not up to the new standards.
The coal gas generated by the blast furnace is applied to links such as a blast furnace hot blast stove, a steel rolling heat treatment furnace, a self-contained power plant, a gas boiler and the like, and the current technical route mainly comprises source control and tail end treatment after combustion. The adoption of the tail end treatment of flue gas desulfurization has little difficulty in reaching the ultralow emission limit value, but can generate a plurality of hidden dangers of environmental management and also does not accord with the development direction of structure adjustment of the steel industry; if the terminal treatment technology is adopted only, the problems of high investment cost, large equipment floor area, unsatisfactory pollutant emission reduction effect and the like are easily caused, however, the source treatment has the advantages of low total investment, small floor area, low operation cost and the like, and simultaneously, the H in the coal gas can be reduced 2 S is dissolved in the condensed water of the coal gas to form the corrosion of the hydrogen sulfuric acid to the pipeline, thereby improving the safety of coal gas transportation, but the amount of the coal gas treated at the source is only about 60 percent of the amount of the flue gas after combustion.
Disclosure of Invention
In order to solve the problem, the utility model provides a through the setting of second reaction tower and desulfurizing tower, guaranteed the high-efficient stability of technology of organic sulphur conversion and inorganic sulphur desorption, simultaneously full play separately technology to organic sulphur, the blast furnace gas fine desulphurization purifier of inorganic sulphur desorption technical economic advantage.
In order to reach above-mentioned purpose through the process, the utility model discloses a blast furnace gas fine desulfurization purifier, blast furnace gas exit end have the gravity dust remover through the pipe connection, the exit end pipe connection of gravity dust remover has the sack cleaner, discharge port in the sack cleaner connects gradually first reaction tower, second reaction tower and desulfurizing tower according to the gas desulfurization order, and contains the hydrogenolysis catalysis protective agent in the first reaction tower. The structure removes dust in the blast furnace gas through the gravity dust collector and the bag-type dust collector, and absorbs most of impurities and condensed water in the blast furnace gas through the hydrogenolysis catalytic protective agent added in the first reaction tower and the cooperation of the hydrogenolysis catalytic protective agent and the steps, thereby achieving the purposes of protecting the organic sulfur converting agent in the subsequent second reaction tower and prolonging the service life of the converting agent.
The further scheme is that the second reaction tower consists of a plurality of organic sulfur conversion reaction towers which are arranged in parallel, blast furnace gas treated by the first reaction tower is introduced into the inlet end of the second reaction tower, a plurality of groups of desulfurization towers are connected to the outlet end of the second reaction tower through pipelines, and a residual pressure turbine power generation device is arranged on the pipeline connecting the outlet end of the second reaction tower and the desulfurization tower. In the structure, the conversion rate of converting organic sulfur in blast furnace gas into inorganic sulfur is effectively accelerated through a plurality of groups of organic sulfur conversion reaction towers which are connected in parallel, and the operation stability of the second reaction tower and the desulfurization tower is ensured through the residual pressure turbine power generation device arranged between the second reaction tower and the desulfurization tower.
In a further scheme, the desulfurization towers adopt the arrangement of an adsorbent dry desulfurization process, and a plurality of groups of desulfurization towers are mutually connected in parallel for operation. The structure ensures the continuous operation of the desulfurization device by keeping the two desulfurization towers in parallel operation when the desulfurizer in the desulfurization towers needs to be replaced.
A further scheme is that a desulfurizing tower air inlet three-way valve and a desulfurizing tower air outlet three-way valve are symmetrically arranged outside the desulfurizing tower, a reaction chamber is arranged inside the desulfurizing tower, a first connecting port is arranged at the top end of the reaction chamber, a first control valve is connected between the first connecting port and the desulfurizing tower air inlet three-way valve, another first control valve is connected between the first connecting port and the desulfurizing tower air outlet three-way valve, a second connecting port is arranged at the bottom end of the reaction chamber, a second control valve is connected between the second connecting port and the desulfurizing tower air inlet three-way valve, another second control valve is connected between the second connecting port and the desulfurizing tower air outlet three-way valve, atomizing nozzles are respectively and fixedly arranged on the top end wall and the bottom end wall of the reaction chamber, desulfurizing agent layers are arranged between the upper atomizing nozzle and the lower atomizing nozzle in parallel, and are fixedly arranged on positioning parts arranged on the two side wall of the reaction chamber, and replacement installation parts for replacing the desulfurizer layer are arranged on the outer wall of the desulfurizing tower in parallel, and correspond to the installation position of the desulfurizer layer in the reaction chamber. This kind of structure keeps blast furnace gas humidity through the upper and lower two sets of atomizer that set up in the reaction chamber, through a plurality of desulfurizer layers that set gradually along vertical direction between two sets of atomizer, carry out desulfurization treatment to blast furnace gas, be connected first connection port and second connection port and the outside connecting tube of reaction chamber, thereby two first control valves and two second control valves of establishing ties on through the connecting tube control the flow direction of blast furnace gas in the desulfurizing tower, and then when improving the utilization efficiency of desulfurizer, realize desulphurization unit's uninterrupted operation.
In a further scheme, the second reaction tower contains a titanium-based hydrogenolysis catalyst, and blast furnace gas is treated by adopting a hydroconversion method. The structure can effectively convert carbonyl sulfide and carbon disulfide by treating blast furnace gas through a hydro-conversion method, and has ideal conversion effect on thiophene, thioether and thiol organic sulfur which has high chemical stability and is difficult to decompose.
The utility model discloses a blast furnace gas fine desulfurization purifier, through leading-in gravity dust collector with blast furnace gas, go into the sack cleaner behind the gravity dust collector dust removal, blast furnace gas after the dust removal is handled gets into the first reaction tower that contains hydrogenolysis catalytic protection agent, thereby absorb most impurity and the comdenstion water in the blast furnace gas, reach the purpose of titanium base hydrogenolysis catalyst in the follow-up second reaction tower of protection, blast furnace gas after the conversion of second reaction tower gets into the desulfurizing tower of multiunit mutual parallel operation, and then when the desulfurizer in the desulfurizing tower needs to be changed, can keep two desulfurizing tower parallel operation and ensure desulfurizing device's continuous operation, the technology high efficiency stability of organic sulphur conversion and inorganic sulphur desorption has been guaranteed simultaneously, full play is separately technology to organic sulphur, inorganic sulphur desorption technical economic advantage.
Drawings
Fig. 1 is a flow chart of the operation of a blast furnace gas fine desulfurization apparatus.
FIG. 2 is a schematic view of the structure of a reaction column.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the objects of the present invention, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
Example 1.
As shown in fig. 1, in the blast furnace gas fine desulfurization purification apparatus described in this embodiment, blast furnace gas is introduced into an inlet end of a gravity dust collector 2, an outlet end pipe of the gravity dust collector 2 is connected to a bag-type dust collector 3, a discharge port in the bag-type dust collector 3 is sequentially connected to a first reaction tower 4, a second reaction tower 5 and a desulfurization tower 6 according to a gas desulfurization sequence, and the first reaction tower 4 contains a hydrogenolysis catalytic protective agent.
The second reaction tower 5 consists of a plurality of organic sulfur conversion reaction towers which are arranged in parallel, the blast furnace gas treated by the first reaction tower 4 is introduced through the inlet end of the second reaction tower 5, the second reaction tower 5 contains titanium-based hydrogenolysis catalyst, and the hydroconversion method is adopted to convert the blast furnace gas into the hydrogenThe organic sulfur in blast furnace gas is converted into inorganic sulfur, the conversion efficiency is more than or equal to 90 percent, and the principle of organic sulfur conversion is COS + H 2 →H 2 S+COCS 2 +2H 2 →2H 2 S+CH 4 。
The outlet end pipeline of the second reaction tower 5 is connected with a plurality of groups of desulfurizing towers 6, and the pipeline connecting the outlet end of the second reaction tower 5 and the desulfurizing towers 6 is provided with a residual pressure turbine generating device 18.
As shown in fig. 1 and fig. 2, the desulfurizing tower 6 is arranged by adopting an adsorbent dry desulfurizing process, a plurality of groups of desulfurizing towers 6 are connected in parallel to each other, a desulfurizing tower inlet three-way valve 8 and a desulfurizing tower outlet three-way valve 9 are respectively arranged outside the desulfurizing tower 6, the desulfurizing tower inlet three-way valve 8 and the desulfurizing tower outlet three-way valve 9 are symmetrically arranged outside the desulfurizing tower 6, a reaction chamber 11 is arranged inside the desulfurizing tower 6, a first connection port 16 is arranged at the top end of the reaction chamber 11, a first control valve 12 is connected between the first connection port 16 and the desulfurizing tower inlet three-way valve 8, another first control valve 12 is connected between the first connection port 16 and the desulfurizing tower outlet three-way valve 9, a second connection port 17 is arranged at the bottom end of the reaction chamber 11, a second control valve 15 is connected between the second connection port 17 and the desulfurizing tower inlet three-way valve 8, another second control valve 15 is connected between the second connection port 17 and the desulfurizing tower three-way valve outlet 9, the top of reaction chamber 11 and the chamber wall of bottom on fixed mounting respectively have atomizer 10, arrange desulfurizer layer 7 between two sets of atomizer 10 from top to bottom in parallel, desulfurizer layer 7 fixed mounting is on the location portion 13 that is equipped with on the chamber wall of reaction chamber 11 both sides, and arranges in parallel on the outer wall of desulfurizing tower 6 and is used for changing change the change installation department 14 of desulfurizer layer 7, and it is corresponding with the mounted position of desulfurizer layer 7 in reaction chamber 11 to change installation department 14.
When the device works, when a desulfurizing agent layer 7 at the lower part of a desulfurizing tower 6 needs to be replaced, a first control valve 12 at one end of a connecting pipeline close to a desulfurizing tower gas inlet three-way valve 8 and a second control valve 15 close to a desulfurizing tower gas outlet three-way valve 9 are opened, and the first control valve 12 and the second control valve 15 which are opposite to the first control valve 12 and the second control valve 15 are closed, so that blast furnace gas is introduced from a first connecting port 16 above a reaction chamber 11 and is discharged from a second connecting port 17 below the reaction chamber;
when the desulfurizing agent layer 7 at the lower part of the desulfurizing tower 6 is replaced, a first control valve 12 at one end of a connecting pipeline close to a gas outlet three-way valve 9 of the desulfurizing tower and a second control valve 15 close to a gas inlet three-way valve 8 of the desulfurizing tower are opened, and the first control valve 12 and the second control valve 15 which are opposite to the first control valve are closed, so that blast furnace gas enters from a second connecting port 17 at the lower part of the reaction chamber 11 and is discharged from a first connecting port at the upper part;
the blast furnace gas desulfurized by the desulfurizing tower 6 flows to the gas holder 19 through the desulfurizing tower gas outlet three-way valve 9.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed by the preferred embodiment, it is not limited to the present invention, and any person skilled in the art can make modifications or changes equivalent to the equivalent embodiments by utilizing the above disclosed technical contents without departing from the technical scope of the present invention, but all the modifications, changes and changes of the technical spirit of the present invention made to the above embodiments are also within the scope of the technical solution of the present invention.
Claims (5)
1. The utility model provides a blast furnace gas fine desulfurization purifier, its characterized in that blast furnace (1) coal gas exit end have gravity dust collector (2) through the pipe connection, the exit end pipe connection of gravity dust collector (2) has sack cleaner (3), discharge port in sack cleaner (3) connects gradually first reaction tower (4), second reaction tower (5) and desulfurizing tower (6) according to the coal gas desulfurization order, and contains hydrogenolysis catalysis protective agent in first reaction tower (4).
2. The blast furnace gas fine desulfurization purification device according to claim 1, characterized in that the second reaction tower (5) is composed of a plurality of organic sulfur conversion reaction towers arranged in parallel, the blast furnace gas treated by the first reaction tower (4) is introduced into the inlet end of the second reaction tower (5), a plurality of groups of desulfurization towers (6) are connected to the outlet end of the second reaction tower (5) through pipelines, and a residual pressure turbine power generation device (18) is arranged on the pipeline connecting the outlet end of the second reaction tower (5) and the desulfurization towers (6).
3. The blast furnace gas fine desulfurization purification device according to claim 2, characterized in that the desulfurization towers (6) are arranged by adopting an adsorbent dry desulfurization process, and a plurality of groups of desulfurization towers (6) are mutually connected in parallel.
4. The blast furnace gas fine desulfurization purification device according to claim 1, 2 or 3, characterized in that a desulfurization tower gas inlet three-way valve (8) and a desulfurization tower gas outlet three-way valve (9) are symmetrically arranged outside the desulfurization tower (6), a reaction chamber (11) is arranged inside the desulfurization tower (6), a first connection port (16) is arranged at the top end of the reaction chamber (11), a first control valve (12) is connected between the first connection port (16) and the desulfurization tower gas inlet three-way valve (8), and another first control valve (12) is connected between the first connection port (16) and the desulfurization tower gas outlet three-way valve (9); a second connecting port (17) is arranged at the bottom end of the reaction chamber (11), a second control valve (15) is connected between the second connecting port (17) and the desulfurization tower gas inlet three-way valve (8), and another second control valve (15) is connected between the second connecting port (17) and the desulfurization tower gas outlet three-way valve (9); fixed mounting has atomizer (10) on the chamber wall of reaction chamber (11) top and bottom respectively, and upper and lower two sets of atomizer (10) between desulfurizer layer (7) of having arranged side by side, on desulfurizer layer (7) fixed mounting was equipped with on the chamber wall of reaction chamber (11) both sides location portion (13) that are equipped with, and arranged side by side on desulfurizing tower (6) outer wall and be used for changing change installation department (14) of desulfurizer layer (7), change installation department (14) and reaction chamber (11) in the mounted position of desulfurizer layer (7) corresponding.
5. The blast furnace gas fine desulfurization and purification apparatus according to claim 4, characterized in that the second reaction tower (5) contains a titanium-based hydrogenolysis catalyst, and the blast furnace gas is treated by a hydroconversion method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220838989.3U CN217511483U (en) | 2022-04-12 | 2022-04-12 | Blast furnace gas fine desulfurization purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220838989.3U CN217511483U (en) | 2022-04-12 | 2022-04-12 | Blast furnace gas fine desulfurization purification device |
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| CN217511483U true CN217511483U (en) | 2022-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220838989.3U Active CN217511483U (en) | 2022-04-12 | 2022-04-12 | Blast furnace gas fine desulfurization purification device |
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