CN215855946U - Blast furnace gas fine desulfurization composite catalysis combination unit - Google Patents
Blast furnace gas fine desulfurization composite catalysis combination unit Download PDFInfo
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- CN215855946U CN215855946U CN202121644807.0U CN202121644807U CN215855946U CN 215855946 U CN215855946 U CN 215855946U CN 202121644807 U CN202121644807 U CN 202121644807U CN 215855946 U CN215855946 U CN 215855946U
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Abstract
A blast furnace gas fine desulfurization composite catalysis combination unit belongs to the technical field of steel blast furnace gas deep purification. The system comprises a blast furnace gas hydrogenation catalytic tower, a blast furnace gas hydrolysis catalytic tower, a bypass valve, a blast furnace gas hydrogenation catalytic tower inlet pipe, a blast furnace gas hydrogenation catalytic tower outlet pipe, a blast furnace gas hydrolysis catalytic tower outlet pipe, a bypass valve inlet pipe and a bypass valve outlet pipe; has the advantages that: after the blast furnace gas fine desulfurization catalytic process adopts the device, the conversion rate of COS in the blast furnace gas can be improved to H through two-stage series catalytic technology of hydrogenation catalysis and hydrolysis catalysis2The S removal process provides better medium gas conditions to ensure the terminal SO2The emission reaches the standard.
Description
Technical Field
The utility model belongs to the technical field of deep purification of blast furnace gas in steel plants, and particularly relates to a blast furnace gas fine desulfurization composite catalysis combination device.
Background
The technology of the blast furnace gas fine desulfurization and the catalytic fine desulfurization is characterized in that COS in the blast furnace gas is converted into H2S through a catalyst before TRT, and H2S is removed through an inorganic sulfur removal technology. Has been provided withThe blast furnace gas fine desulfurization application performance generally adopts a primary catalytic device, the conversion of COS in the blast furnace gas is incomplete, and the back part is subjected to H removal2Residual COS cannot be effectively removed by the S facility, and SO is discharged by tail-end combustion2Occasionally, the standard will be exceeded.
Disclosure of Invention
The utility model aims to provide a blast furnace gas fine desulfurization composite catalysis combination device which can improve the COS conversion efficiency, further provide better gas medium conditions for the H2S removal process and ensure the tail end SO2The emission reaches the standard.
The utility model comprises a blast furnace gas hydrogenation catalytic tower 1, a blast furnace gas hydrolysis catalytic tower 2, a bypass valve 3, a blast furnace gas hydrogenation catalytic tower inlet pipe 4, a blast furnace gas hydrogenation catalytic tower outlet pipe 5, a blast furnace gas hydrolysis catalytic tower outlet pipe 6, a bypass valve inlet pipe 7 and a bypass valve outlet pipe 8.
The inlet of a blast furnace gas hydrogenation catalytic tower 1 is connected with an inlet pipe 4 of the blast furnace gas hydrogenation catalytic tower, the outlet of the blast furnace gas hydrogenation catalytic tower 1 is connected with an outlet pipe 5 of the blast furnace gas hydrogenation catalytic tower, the outlet pipe 5 of the blast furnace gas hydrogenation catalytic tower is connected with a blast furnace gas hydrolysis catalytic tower 2, a bypass valve 3 is connected with a bypass valve inlet pipe 7, the bypass valve 3 is connected with a bypass valve outlet pipe 8, the bypass valve inlet pipe 7 is connected with the inlet pipe 4 of the blast furnace gas hydrogenation catalytic tower, and the bypass valve outlet pipe 8 is connected with an outlet pipe 6 of the blast furnace gas hydrolysis catalytic tower.
The hydrogenation catalyst is filled in the blast furnace gas hydrogenation catalytic tower 1, the hydrolysis catalyst is filled in the blast furnace gas hydrolysis catalytic tower 2, the inlet pipe 4 of the blast furnace gas hydrogenation catalytic tower, the outlet pipe 5 of the blast furnace gas hydrogenation catalytic tower, the outlet pipe 6 of the blast furnace gas hydrolysis catalytic tower, the inlet pipe 7 of the bypass valve and the outlet pipe 8 of the bypass valve are welded steel pipes, and the bypass valve 3 is a three-eccentric hard sealing butterfly valve.
The utility model has the advantages that: after the blast furnace gas fine desulfurization catalytic process adopts the device, the conversion rate of COS in the blast furnace gas can be improved through two-stage series catalytic technology of hydrogenation catalysis and hydrolysis catalysis, better medium gas conditions are provided for an H2S removal process, and the tail end SO2 emission is guaranteed to reach the standard.
Drawings
Fig. 1 is a schematic structural diagram of the device. The system comprises a blast furnace gas hydrogenation catalytic tower 1, a blast furnace gas hydrolysis catalytic tower 2, a bypass valve 3, a blast furnace gas hydrogenation catalytic tower inlet pipe 4, a blast furnace gas hydrogenation catalytic tower outlet pipe 5, a blast furnace gas hydrolysis catalytic tower outlet pipe 6, a bypass valve inlet pipe 7 and a bypass valve outlet pipe 8.
Detailed Description
Example 1
The following describes embodiments of the present invention with reference to the drawings.
The utility model comprises a blast furnace gas hydrogenation catalytic tower 1, a blast furnace gas hydrolysis catalytic tower 2, a bypass valve 3, a blast furnace gas hydrogenation catalytic tower inlet pipe 4, a blast furnace gas hydrogenation catalytic tower outlet pipe 5, a blast furnace gas hydrolysis catalytic tower outlet pipe 6, a bypass valve inlet pipe 7 and a bypass valve outlet pipe 8. The inlet of a blast furnace gas hydrogenation catalytic tower 1 is connected with an inlet pipe 4 of the blast furnace gas hydrogenation catalytic tower, the outlet of the blast furnace gas hydrogenation catalytic tower 1 is connected with an outlet pipe 5 of the blast furnace gas hydrogenation catalytic tower, the outlet pipe 5 of the blast furnace gas hydrogenation catalytic tower is connected with a blast furnace gas hydrolysis catalytic tower 2, a bypass valve 3 is connected with a bypass valve inlet pipe 7, the bypass valve 3 is connected with a bypass valve outlet pipe 8, the bypass valve inlet pipe 7 is connected with the inlet pipe 4 of the blast furnace gas hydrogenation catalytic tower, and the bypass valve outlet pipe 8 is connected with an outlet pipe 6 of the blast furnace gas hydrolysis catalytic tower. The hydrogenation catalyst is filled in the blast furnace gas hydrogenation catalytic tower 1, the hydrolysis catalyst is filled in the blast furnace gas hydrolysis catalytic tower 2, the inlet pipe 4 of the blast furnace gas hydrogenation catalytic tower, the outlet pipe 5 of the blast furnace gas hydrogenation catalytic tower, the outlet pipe 6 of the blast furnace gas hydrolysis catalytic tower, the inlet pipe 7 of the bypass valve and the outlet pipe 8 of the bypass valve are welded steel pipes, and the bypass valve 3 is a three-eccentric hard sealing butterfly valve.
The working principle is as follows: under normal conditions, blast furnace gas enters a blast furnace gas hydrogenation catalytic tower 1 from a blast furnace gas hydrogenation catalytic tower inlet pipe 4, and about 80% of COS in the blast furnace gas is converted into H by a hydrogenation catalyst filled in the blast furnace gas hydrogenation catalytic tower 12S, then the blast furnace gas enters a blast furnace gas hydrolysis catalytic tower 2 through an outlet pipe 5 of the hydrogenation catalytic tower, and residual COS in the blast furnace gas and the catalystHydrolytic agent Al2O3After the reaction, about 95% or more of the reaction products are converted to H2S, after two-stage catalytic conversion, 99 percent of COS in the blast furnace gas is converted into H2S, finally entering H2H in the coal gas is removed in the S removing section2And (4) removing the S. When the hydrogenation catalyst in the blast furnace gas hydrogenation catalytic tower 1 or the hydrolysis catalyst in the blast furnace gas hydrolysis catalytic tower 2 is saturated and needs to be replaced, the bypass valve 3 is opened, and the gas enters the H after sequentially passing through the bypass valve inlet pipe 7, the bypass valve 3 and the bypass valve outlet pipe 8 for a short time2And removing in an S removing section. And after the catalyst is replaced, closing the bypass valve 3, and allowing the blast furnace gas to sequentially enter the blast furnace gas hydrogenation catalytic tower 1 and the blast furnace gas hydrolysis catalytic tower 2 for COS conversion and then enter an H2S removal section.
Claims (4)
1. The blast furnace gas fine desulfurization composite catalysis combination device is characterized by comprising a blast furnace gas hydrogenation catalysis tower (1), a blast furnace gas hydrolysis catalysis tower (2), a bypass valve (3), a blast furnace gas hydrogenation catalysis tower inlet pipe (4), a blast furnace gas hydrogenation catalysis tower outlet pipe (5), a blast furnace gas hydrolysis catalysis tower outlet pipe (6), a bypass valve inlet pipe (7) and a bypass valve outlet pipe (8); the inlet of a blast furnace gas hydrogenation catalytic tower (1) is connected with an inlet pipe (4) of the blast furnace gas hydrogenation catalytic tower, the outlet of the blast furnace gas hydrogenation catalytic tower (1) is connected with an outlet pipe (5) of the blast furnace gas hydrogenation catalytic tower, the outlet pipe (5) of the blast furnace gas hydrogenation catalytic tower is connected with a blast furnace gas hydrolysis catalytic tower (2), a bypass valve (3) is connected with a bypass valve inlet pipe (7), the bypass valve (3) is connected with a bypass valve outlet pipe (8), the bypass valve inlet pipe (7) is connected with the inlet pipe (4) of the blast furnace gas hydrogenation catalytic tower, and the bypass valve outlet pipe (8) is connected with an outlet pipe (6) of the blast furnace gas hydrolysis catalytic tower.
2. The blast furnace gas fine desulfurization composite catalytic combination unit according to claim 1, characterized in that the blast furnace gas hydrogenation catalytic tower (1) is filled with hydrogenation catalyst, and the blast furnace gas hydrolysis catalytic tower (2) is filled with hydrolysis catalyst.
3. The blast furnace gas fine desulfurization composite catalysis combination unit as claimed in claim 1, wherein the inlet pipe (4) of the blast furnace gas hydrogenation catalysis tower, the outlet pipe (5) of the blast furnace gas hydrogenation catalysis tower, the outlet pipe (6) of the blast furnace gas hydrolysis catalysis tower, the inlet pipe (7) of the bypass valve and the outlet pipe (8) of the bypass valve are welded steel pipes.
4. The blast furnace gas fine desulfurization composite catalytic combination unit according to claim 1, characterized in that the bypass valve (3) adopts a triple eccentric hard seal butterfly valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121644807.0U CN215855946U (en) | 2021-07-19 | 2021-07-19 | Blast furnace gas fine desulfurization composite catalysis combination unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121644807.0U CN215855946U (en) | 2021-07-19 | 2021-07-19 | Blast furnace gas fine desulfurization composite catalysis combination unit |
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| Publication Number | Publication Date |
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| CN215855946U true CN215855946U (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121644807.0U Active CN215855946U (en) | 2021-07-19 | 2021-07-19 | Blast furnace gas fine desulfurization composite catalysis combination unit |
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| CN (1) | CN215855946U (en) |
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2021
- 2021-07-19 CN CN202121644807.0U patent/CN215855946U/en active Active
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