CN216236885U - Device for fine desulfurization process flow of coke oven gas - Google Patents
Device for fine desulfurization process flow of coke oven gas Download PDFInfo
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- CN216236885U CN216236885U CN202121630465.7U CN202121630465U CN216236885U CN 216236885 U CN216236885 U CN 216236885U CN 202121630465 U CN202121630465 U CN 202121630465U CN 216236885 U CN216236885 U CN 216236885U
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Abstract
A device for a fine desulfurization process flow of coke oven gas belongs to the technical field of deep purification of steel coke oven gas. The system comprises a dry-type gas desulfurization tower group, a system inlet header pipe, a system outlet header pipe, an inlet pipe, an outlet pipe, an inlet branch pipe, an outlet branch pipe, a communication pipeline, an inlet shutoff valve group, an outlet shutoff valve group, an inlet shutoff valve group, an outlet shutoff valve group, a bypass shutoff valve group and a bypass shutoff valve group. Has the advantages that: the parallel operation mode of the gas desulfurization tower groups can be realized, and the serial operation mode of the gas desulfurization tower groups can also be realized; not only can the system be reserved, but also the desulfurizer can be utilized to the maximum.
Description
Technical Field
The utility model belongs to the technical field of deep purification of coke oven gas in steel plants, and particularly relates to a device for a fine desulfurization process flow of coke oven gas.
Background
The coke oven gas fine desulfurization technology generally adopts a plurality of coke oven gas desulfurization tower groups to carry out deep purification treatment on the gas, and the towers can be connected in parallel or in series. The desulfurization capacity of the desulfurization towers in a parallel connection mode cannot be fully utilized; the operation mode of series connection is adopted, the standby of the desulfurizing tower cannot be realized, when the desulfurizing agent needs to be replaced by the desulfurizing tower, the fine desulfurization of the coke oven gas cannot be realized, and the gas quality does not reach the standard.
Disclosure of Invention
The utility model aims to provide a device for a coke oven gas fine desulfurization process flow, which solves the problem that the desulfurization capability of desulfurization towers in a parallel connection mode cannot be fully utilized; the adoption of the operation mode of series connection can not realize the standby of the desulfurizing tower, and when the desulfurizing agent needs to be replaced in the desulfurizing tower, the coke oven gas can not realize the fine desulfurization, the gas quality can not reach the standard and the like. The utility model can realize the standby of the system and can also maximize the utilization of the desulfurizer. The parallel operation mode of the gas desulfurization tower groups can be realized, and the serial operation mode of the gas desulfurization tower groups can also be realized.
The system comprises a first dry type gas desulfurization tower 1, a second dry type gas desulfurization tower 2, a system inlet header pipe 3, a system outlet header pipe 4, a first inlet pipe 5, a second inlet pipe 6, a first outlet pipe 7, a second outlet pipe 8, a first inlet branch pipe 9, a first outlet branch pipe 10, a second inlet branch pipe 11, a second outlet branch pipe 12, a communication pipeline 13, a first inlet shutoff valve bank 14, a first outlet shutoff valve bank 15, a second inlet shutoff valve bank 16, a second outlet shutoff valve bank 17, a first bypass shutoff valve bank 18, a second bypass shutoff valve bank 19, a third bypass shutoff valve bank 20 and a fourth bypass shutoff valve bank 21. The system inlet header pipe 3 is connected with a first inlet pipe 5, a first inlet branch pipe 9 is connected with the first inlet pipe 5, a first dry-type gas desulfurization tower 1 is connected with the first inlet branch pipe 9, the first dry-type gas desulfurization tower 1 is connected with a first outlet branch pipe 10, the first outlet branch pipe 10 is connected with a first outlet pipe 7, and the first outlet pipe 7 is connected with the system outlet header pipe 4; the system inlet header pipe 3 is connected with a second inlet pipe 6, a second inlet branch pipe 11 is connected with the second inlet pipe 6, a second dry-type gas desulfurization tower 2 is connected with the second inlet branch pipe 11, the second dry-type gas desulfurization tower 2 is connected with a second outlet branch pipe 12, the second outlet branch pipe 12 is connected with a second outlet pipe 8, and the second outlet pipe 8 is connected with the system outlet header pipe 4; the communicating pipe 13 is connected with the first inlet pipe 5, the second inlet pipe 6, the first outlet pipe 7 and the second outlet pipe 8; a first inlet shut-off valve set 14 mounted on the first inlet pipe 5, a first outlet shut-off valve set 15 mounted on the first outlet pipe 7, a second inlet shut-off valve set 16 mounted on the second inlet pipe 6, and a second outlet shut-off valve set 17 mounted on the second outlet pipe 8; a first bypass shut-off valve block 18 is mounted on the first inlet pipe 5, a second bypass shut-off valve block 19 is mounted on the first outlet pipe 7, a third bypass shut-off valve block 20 is mounted on the second inlet pipe 6, and a fourth bypass shut-off valve block 21 is mounted on the second outlet pipe 8.
The first dry-type gas desulfurization tower group 1 and the second dry-type gas desulfurization tower group 2 adopt a fixed bed dry-type desulfurization tower group, and dry-type desulfurizing agents are filled in the first dry-type gas desulfurization tower group and the second dry-type gas desulfurization tower group; the system inlet header pipe 3, the system outlet header pipe 4, the first inlet pipe 5, the second inlet pipe 6, the first outlet pipe 7, the second outlet pipe 8, the first inlet branch pipe 9, the first outlet branch pipe 10, the second inlet branch pipe 11, the second outlet branch pipe 12 and the communicating pipeline 13 adopt welded steel pipes; the first inlet shutoff valve group 14, the first outlet shutoff valve group 15, the second inlet shutoff valve group 16, the second outlet shutoff valve group 17, the first bypass shutoff valve group 18, the second bypass shutoff valve group 19, the third bypass shutoff valve group 20 and the fourth bypass shutoff valve group 21 are reliable shutoff valve groups of a butterfly valve and a blind valve.
The utility model has the advantages that: the parallel operation mode of the gas desulfurization tower groups can be realized, and the serial operation mode of the gas desulfurization tower groups can also be realized. The process flow can realize the standby of the system and can also maximize the utilization of the desulfurizer.
Drawings
FIG. 1 is a schematic diagram of the process route. The system comprises a first dry type gas desulfurization tower 1, a second dry type gas desulfurization tower 2, a system inlet header pipe 3, a system outlet header pipe 4, a first inlet pipe 5, a second inlet pipe 6, a first outlet pipe 7, a second outlet pipe 8, a first inlet branch pipe 9, a first outlet branch pipe 10, a second inlet branch pipe 11, a second outlet branch pipe 12, a communication pipeline 13, a first inlet cut-off valve bank 14, a first outlet cut-off valve bank 15, a second inlet cut-off valve bank 16, a second outlet cut-off valve bank 17, a first bypass cut-off valve bank 18, a second bypass cut-off valve bank 19, a third bypass cut-off valve bank 20 and a fourth bypass cut-off valve bank 21.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
The utility model comprises a first dry type gas desulfurization tower 1, a second dry type gas desulfurization tower 2, a system inlet main pipe 3, a system outlet main pipe 4, a first inlet pipe 5, a second inlet pipe 6, a first outlet pipe 7, a second outlet pipe 8, a first inlet branch pipe 9, a first outlet branch pipe 10, a second inlet branch pipe 11, a second outlet branch pipe 12, a communication pipeline 13, a first inlet shutoff valve group 14, a first outlet shutoff valve group 15, a second inlet shutoff valve group 16, a second outlet shutoff valve group 17, a first bypass shutoff valve group 18, a second bypass shutoff valve group 19, a third bypass shutoff valve group 20 and a fourth bypass shutoff valve group 21. The system inlet header pipe 3 is connected with a first inlet pipe 5, a first inlet branch pipe 9 is connected with the first inlet pipe 5, a first dry-type gas desulfurization tower 1 is connected with the first inlet branch pipe 9, the first dry-type gas desulfurization tower 1 is connected with a first outlet branch pipe 10, the first outlet branch pipe 10 is connected with a first outlet pipe 7, and the first outlet pipe 7 is connected with the system outlet header pipe 4; the system inlet header pipe 3 is connected with a second inlet pipe 6, a second inlet branch pipe 11 is connected with the second inlet pipe 6, a second dry-type gas desulfurization tower 2 is connected with the second inlet branch pipe 11, the second dry-type gas desulfurization tower 2 is connected with a second outlet branch pipe 12, the second outlet branch pipe 12 is connected with a second outlet pipe 8, and the second outlet pipe 8 is connected with the system outlet header pipe 4; the communicating pipe 13 is connected with the first inlet pipe 5, the second inlet pipe 6, the first outlet pipe 7 and the second outlet pipe 8; a first inlet shut-off valve set 14 mounted on the first inlet pipe 5, a first outlet shut-off valve set 15 mounted on the first outlet pipe 7, a second inlet shut-off valve set 16 mounted on the second inlet pipe 6, and a second outlet shut-off valve set 17 mounted on the second outlet pipe 8;
a first bypass shut-off valve block 18 is mounted on the first inlet pipe 5, a second bypass shut-off valve block 19 is mounted on the first outlet pipe 7, a third bypass shut-off valve block 20 is mounted on the second inlet pipe 6, and a fourth bypass shut-off valve block 21 is mounted on the second outlet pipe 8. The first dry-type gas desulfurization tower group 1 and the second dry-type gas desulfurization tower group 2 adopt a fixed bed dry-type desulfurization tower group, and dry-type desulfurizing agents are filled in the first dry-type gas desulfurization tower group and the second dry-type gas desulfurization tower group; the system inlet header pipe 3, the system outlet header pipe 4, the first inlet pipe 5, the second inlet pipe 6, the first outlet pipe 7, the second outlet pipe 8, the first inlet branch pipe 9, the first outlet branch pipe 10, the second inlet branch pipe 11, the second outlet branch pipe 12 and the communicating pipeline 13 adopt welded steel pipes; the first inlet shutoff valve group 14, the first outlet shutoff valve group 15, the second inlet shutoff valve group 16, the second outlet shutoff valve group 17, the first bypass shutoff valve group 18, the second bypass shutoff valve group 19, the third bypass shutoff valve group 20 and the fourth bypass shutoff valve group 21 are reliable shutoff valve groups of a butterfly valve and a blind valve.
The working principle is as follows: under normal conditions, the first dry gas desulfurization tower group 1 operates, the second dry gas desulfurization tower group 2 serves as a standby desulfurization tower group, and at the moment, the first inlet shutoff valve group 14 is opened, the first outlet shutoff valve group 15 is opened, the second inlet shutoff valve group 16 is closed, the second outlet shutoff valve group 17 is closed, the first bypass shutoff valve group 18 is closed, the second bypass shutoff valve group 19 is closed, the third bypass shutoff valve group 20 is closed, and the fourth bypass shutoff valve group 21 is closed. Coal gas sequentially passes through a system inlet main pipe 3, a first inlet cut-off valve group 14, a first inlet pipe 5 and a first inlet branch pipe 9 to enter a first dry type coal gas desulfurization tower group 1, and coke oven gas after fine desulfurization sequentially passes through a first outlet branch pipe 10, a first outlet pipe 7, a first outlet cut-off valve group 15 and a system outlet main pipe 4 to enter a downstream user. After the system operates for a period of time, the content of H2S in the coal gas at the outlet of the first dry-type desulfurization tower group 1 is increased, the gas demand of downstream users is not met, at the moment, the desulfurizer in the first dry-type coal gas desulfurization tower group 1 is not fully utilized, and if the first dry-type coal gas desulfurization tower group 1 is closed at the moment, the coal gas completely enters the second dry-type coal gas desulfurization tower group 2 for fine desulfurization, so that the waste of the desulfurizer is avoided; at this time, the series operation of the first dry gas desulfurization tower group 1 and the second dry gas desulfurization tower group 2 can be realized by switching valves, specifically, as follows, the first outlet shut-off valve group 15 is closed, the second bypass shut-off valve group 19 is opened, the third bypass shut-off valve group 20 is opened, and the second outlet shut-off valve group 17 is opened. The coke oven gas sequentially passes through a system inlet header pipe 3, a first inlet shutoff valve group 14, a first inlet pipe 5 and a first inlet branch pipe 9 to enter a first dry-type gas desulfurization tower group 1, the gas is subjected to primary fine desulfurization, then the gas sequentially passes through a first outlet branch pipe 10, a second bypass shutoff valve group 19, a communicating pipeline 13, a third bypass shutoff valve group 20 and a second inlet branch pipe 11 to enter a second dry-type gas desulfurization tower group 2 for further fine desulfurization, and the desulfurized gas sequentially passes through a second outlet branch pipe 12, a second outlet pipe 8, a second outlet shutoff valve group 17 and a system outlet header pipe 4 and then enters a downstream user. When the sulfur capacity of the desulfurizer in the first dry gas desulfurization tower unit 1 is saturated, the first inlet shutoff valve group 14 is closed, the second bypass shutoff valve group 19 is closed, the third bypass shutoff valve group 20 is closed, and the second inlet shutoff valve group 16 is opened. At the moment, the coke oven gas sequentially passes through the system inlet main pipe 3, the second inlet shutoff valve group 16, the second inlet pipe 6 and the second inlet branch pipe 11 and then enters the second dry type gas desulfurization tower group 2 for fine desulfurization, the desulfurized gas sequentially passes through the second outlet branch pipe 12, the second outlet pipe 8, the second outlet shutoff valve group 17 and the system outlet main pipe 4 and then enters a downstream user, and the desulfurizer inside the first dry type gas desulfurization tower group 1 is replaced by the desulfurizer. When the second dry type gas desulfurization tower group 2 operates for a period of time and the desulfurization efficiency is reduced, the series operation with the dry type gas desulfurization tower group 1 is realized through the similar operation of the cut-off valve group.
Claims (4)
1. The device for the coke oven gas fine desulfurization process flow is characterized by comprising a first dry type gas desulfurization tower (1), a second dry type gas desulfurization tower (2), a system inlet header pipe (3), a system outlet header pipe (4), a first inlet pipe (5), a second inlet pipe (6), a first outlet pipe (7), a second outlet pipe (8), a first inlet branch pipe (9), a first outlet branch pipe (10), a second inlet branch pipe (11), a second outlet branch pipe (12), a communication pipeline (13), a first inlet cut-off valve group (14), a first outlet cut-off valve group (15), a second inlet cut-off valve group (16), a second outlet cut-off valve group (17), a first bypass cut-off valve group (18), a second bypass cut-off valve group (19), a third bypass cut-off valve group (20) and a fourth bypass cut-off valve group (21); the system inlet header pipe (3) is connected with a first inlet pipe (5), a first inlet branch pipe (9) is connected with the first inlet pipe (5), a first dry-type gas desulfurization tower (1) is connected with the first inlet branch pipe (9), the first dry-type gas desulfurization tower (1) is connected with a first outlet branch pipe (10), the first outlet branch pipe (10) is connected with a first outlet pipe (7), and the first outlet pipe (7) is connected with the system outlet header pipe (4); the system inlet main pipe (3) is connected with a second inlet pipe (6), a second inlet branch pipe (11) is connected with the second inlet pipe (6), a second dry-type gas desulfurization tower (2) is connected with the second inlet branch pipe (11), the second dry-type gas desulfurization tower (2) is connected with a second outlet branch pipe (12), the second outlet branch pipe (12) is connected with a second outlet pipe (8), and the second outlet pipe (8) is connected with the system outlet main pipe (4); the communicating pipeline (13) is connected with the first inlet pipe (5), the second inlet pipe (6), the first outlet pipe (7) and the second outlet pipe (8); a first inlet shut-off valve block (14) is mounted on the first inlet pipe (5), a first outlet shut-off valve block (15) is mounted on the first outlet pipe (7), a second inlet shut-off valve block (16) is mounted on the second inlet pipe (6), and a second outlet shut-off valve block (17) is mounted on the second outlet pipe (8); a first bypass cut-off valve group (18) is installed on the first inlet pipe (5), a second bypass cut-off valve group (19) is installed on the first outlet pipe (7), a third bypass cut-off valve group (20) is installed on the second inlet pipe (6), and a fourth bypass cut-off valve group (21) is installed on the second outlet pipe (8).
2. The device for the coke oven gas fine desulfurization process flow according to claim 1, wherein the first dry gas desulfurization tower (1) and the second dry gas desulfurization tower (2) adopt a fixed bed dry desulfurization tower, and a dry desulfurizing agent is filled inside.
3. The device for the coke oven gas fine desulfurization process flow according to claim 1, wherein the system inlet header pipe (3), the system outlet header pipe (4), the first inlet pipe (5), the second inlet pipe (6), the first outlet pipe (7), the second outlet pipe (8), the first inlet branch pipe (9), the first outlet branch pipe (10), the second inlet branch pipe (11), the second outlet branch pipe (12) and the communication pipeline (13) adopt welded steel pipes.
4. The device for the coke oven gas fine desulfurization process flow according to claim 1, characterized in that the first inlet shut-off valve group (14), the first outlet shut-off valve group (15), the second inlet shut-off valve group (16), the second outlet shut-off valve group (17), the first bypass shut-off valve group (18), the second bypass shut-off valve group (19), the third bypass shut-off valve group (20), and the fourth bypass shut-off valve group (21) are reliable shut-off valve groups using butterfly valves and blind valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121630465.7U CN216236885U (en) | 2021-07-17 | 2021-07-17 | Device for fine desulfurization process flow of coke oven gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121630465.7U CN216236885U (en) | 2021-07-17 | 2021-07-17 | Device for fine desulfurization process flow of coke oven gas |
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| Publication Number | Publication Date |
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| CN216236885U true CN216236885U (en) | 2022-04-08 |
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| CN202121630465.7U Active CN216236885U (en) | 2021-07-17 | 2021-07-17 | Device for fine desulfurization process flow of coke oven gas |
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- 2021-07-17 CN CN202121630465.7U patent/CN216236885U/en active Active
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