CN219385074U - Synthetic tail gas treatment tower - Google Patents
Synthetic tail gas treatment tower Download PDFInfo
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- CN219385074U CN219385074U CN202223580108.1U CN202223580108U CN219385074U CN 219385074 U CN219385074 U CN 219385074U CN 202223580108 U CN202223580108 U CN 202223580108U CN 219385074 U CN219385074 U CN 219385074U
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Abstract
The utility model discloses a synthetic tail gas treatment tower which comprises an acid gas main air inlet pipe, an acid gas buffer tank and a synthetic tail gas system, wherein one end, far away from an air inlet, of the acid gas main air inlet pipe is connected with the acid gas buffer tank, a main air inlet pipe multi-stage valve is arranged on the acid gas main air inlet pipe, an acid gas branch air inlet pipe is connected to the middle section of the acid gas main air inlet pipe, and a branch air inlet pipe valve is arranged on the acid gas branch air inlet pipe; the outlet of the acid gas buffer tank is connected with a lean solution main feeding pipe, the lean solution main feeding pipe is connected with a lean solution division feeding pipe, and a division feeding pipe valve is arranged on the lean solution division feeding pipe; and an air pipe at one end of the synthesis tail gas recovery system is connected with the main acid gas inlet pipe. According to the utility model, by designing the hydrogen sulfide synthesis system and the synthesis tail gas system, the synthesis tail gas generated in the chemical production and processing can be recovered to the hydrogen sulfide synthesis system to recover and fully utilize the hydrogen sulfide in the synthesis tail gas, so that the safety and the environmental protection are ensured.
Description
Technical Field
The utility model relates to the technical field of hydrogen sulfide treatment, in particular to a synthetic tail gas treatment tower.
Background
Hydrogen sulfide is an inorganic compound with the chemical formula H2S. Under normal conditions, the natural gas is colorless and inflammable acid gas, and has malodor when the concentration is low, and the odor is like a stinky egg; but rather no smell at high concentrations (since high concentrations of hydrogen sulfide can paralyze the olfactory nerve). It is soluble in water, and 1 mole of water can dissolve about 2.6 moles of hydrogen sulfide at 0 ℃. The aqueous solution of hydrogen sulfide, called hydrogen sulfate, is a weak acid that when heated, hydrogen sulfide escapes from the water.
After being cooled for many times, the non-condensable gas is absorbed by a methanol absorption tower and a water absorption tower, the non-absorbed non-condensable gas contains a large amount of carbon dioxide and a small amount of hydrogen sulfide, and the synthetic tail gas also contains a small amount of hydrogen sulfide (10 percent), so that the hydrogen sulfide is extremely easy to form an explosive mixture by air, and the explosive mixture is burnt and exploded when exposed fire and high heat energy are encountered; the personnel poisoning is very easy to cause, and even lightning type death occurs to the personnel at high concentration; the synthetic tail gas is not discharged at will and must be treated correspondingly, and the existing treatment equipment for the synthetic tail gas can realize effective treatment of hydrogen sulfide through a dry treatment system or a wet treatment system, but cannot recover and fully utilize the hydrogen sulfide in the synthetic tail gas, and the synthetic tail gas is sent to an inlet of an acid gas buffer tank through a pipeline, so that the hydrogen sulfide can be recovered to a production system for full use, and safety and environmental protection are ensured.
It is therefore desirable to provide a synthesis off-gas treatment tower that addresses the above-described problems.
Disclosure of Invention
The utility model aims to solve the technical problems that the synthesis tail gas cannot be discharged at will and must be treated correspondingly, and the existing treatment equipment for the synthesis tail gas can realize effective treatment of hydrogen sulfide through a dry treatment system or a wet treatment system, but cannot recover the hydrogen sulfide in the synthesis tail gas and realize full utilization.
In order to solve the technical problems, the utility model adopts a technical scheme that: the utility model provides a synthetic tail gas treatment tower, including sour gas main intake pipe, sour gas buffer tank and synthetic tail gas system, the one end that sour gas main intake pipe kept away from the air inlet is connected with sour gas buffer tank, install main intake pipe multistage valve on the sour gas main intake pipe, sour gas main intake pipe middle section is connected with sour gas and divides the intake pipe, install on the sour gas and divide the intake pipe valve, sour gas can get into sour gas buffer tank through sour gas main intake pipe or sour gas branch intake pipe;
the outlet of the acid gas buffer tank is connected with a lean solution main feeding pipe, a main feeding pipe multistage valve is arranged in the middle of the lean solution main feeding pipe, a lean solution sub-feeding pipe is connected to the lean solution main feeding pipe, and a sub-feeding pipe valve is arranged on the lean solution sub-feeding pipe;
and an air pipe at one end of the synthesis tail gas recovery system is connected with the main acid gas inlet pipe.
The utility model is further provided with: the tail end of the lean liquid main feeding pipe is connected with a hydrogen sulfide primary concentration tower.
Through the technical scheme, after the synthesis tail gas enters and the acid gas is fully mixed and reacted in the acid gas buffer tank, the synthesis tail gas can enter the hydrogen sulfide primary concentration tower through the lean solution main feeding pipe, and the hydrogen sulfide primary concentration tower further realizes the purification of the hydrogen sulfide.
The utility model is further provided with: the synthetic tail gas system comprises a synthetic tail gas buffer tank, a gas outlet of the synthetic tail gas buffer tank is fixedly connected with a synthetic tail gas transmission pipe, a gas transmission pipe valve is arranged on the synthetic tail gas transmission pipe, the middle section of the synthetic tail gas transmission pipe is connected with a tail gas main pipe, and a main pipe valve is arranged on the tail gas main pipe.
Through the technical scheme, the synthesis tail gas system is used for supplying gas into the hydrogen sulfide system from the synthesis tail gas.
The utility model is further provided with: and one end of the synthetic tail gas transmission pipe, which is far away from the synthetic tail gas buffer tank, is communicated with the main acid gas inlet pipe.
Through the technical scheme, the synthetic tail gas in the synthetic tail gas buffer tank can enter the acid gas buffer tank through the synthetic tail gas transmission pipe.
The utility model is further provided with: the pressure in the synthesis tail gas buffer tank is greater than that in the acid gas buffer tank.
Through the technical scheme, when the main pipe valve is closed and the gas pipe valve is slowly opened, the pressure in the synthesis tail gas buffer tank is larger than that in the acid gas buffer tank, so that the synthesis tail gas in the synthesis tail gas buffer tank can enter the acid gas buffer tank through the synthesis tail gas pipe, and further, the synthesis tail gas can be stably fed into the hydrogen sulfide system, and the recycling of hydrogen sulfide can be realized subsequently.
The utility model is further provided with: the synthetic tail gas delivery pipe is communicated with the tail gas main pipe through a tee joint.
Through the technical scheme, the synthetic tail gas conveying pipe can be connected with the tail gas main pipe to form a pipeline, and meanwhile, the flow direction of the synthetic tail gas is controlled through opening and closing of the corresponding valve.
The utility model is further provided with: the gas pipe valve is arranged at one end close to the main acid gas inlet pipe, and the tail gas main pipe is connected to the middle section between the gas pipe valve and the synthetic tail gas buffer tank.
Through the technical scheme, when the synthesis system is abnormal, the main pipe valve of the tail gas main pipe can be slowly opened, the gas pipe valve entering the acid gas buffer tank is closed, and the synthesized tail gas in the gas pipe valve can timely cut into a torch or a sulfur recovery system through the tail gas main pipe.
The utility model is further provided with: the main acid gas inlet pipe, the main acid gas separating inlet pipe, the main lean solution inlet pipe, the lean solution separating inlet pipe, the synthesized tail gas conveying pipe and the tail gas main pipe are all made of stainless steel materials.
Through the technical scheme, the pipeline made of stainless steel materials is required to be subjected to flaw detection, purging, replacement and leakage test before being put into use, and the pipeline can be put into use only after all the pipelines are detected to be qualified, so that the pipeline system is ensured not to leak in the operation process.
The beneficial effects of the utility model are as follows:
1. according to the utility model, by designing the hydrogen sulfide synthesis system and the synthesis tail gas system, the synthesis tail gas generated in the chemical production and processing can be recovered to the hydrogen sulfide synthesis system to recover and fully utilize the hydrogen sulfide in the synthesis tail gas, so that the safety and the environmental protection are ensured;
2. according to the utility model, the pressure in the synthesis tail gas buffer tank is higher than the pressure in the acid gas buffer tank, so that the synthesis tail gas in the synthesis tail gas buffer tank can be sent into the hydrogen sulfide system through the synthesis tail gas transmission pipe, and the recovery and the utilization of the synthesis tail gas are realized.
Drawings
FIG. 1 is a schematic view of hydrogen sulfide recovery in a synthesis tail gas treatment tower according to the present utility model.
In the figure: 1. the main inlet pipe of the acid gas; 2. an acid gas buffer tank; 3. a main air inlet pipe multi-stage valve; 4. acid gas divides the air inlet pipe; 5. a branch air inlet pipe valve; 6. a synthesis tail gas buffer tank; 7. a synthetic tail gas delivery pipe; 8. a gas pipe valve; 9. a tail gas main pipe; 10. a manifold valve; 11. a lean liquid main feed pipe; 12. a main feed pipe multi-stage valve; 13. lean solution divides the feed pipe; 14. and a valve for separating the feeding pipe.
Detailed Description
The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.
Examples:
referring to fig. 1, a synthetic tail gas treatment tower comprises an acid gas main air inlet pipe 1, an acid gas buffer tank 2 and a synthetic tail gas system, wherein one end, far away from an air inlet, of the acid gas main air inlet pipe 1 is connected with the acid gas buffer tank 2, a main air inlet pipe multi-stage valve 3 is installed on the acid gas main air inlet pipe 1, an acid gas branch air inlet pipe 4 is connected to the middle section of the acid gas main air inlet pipe 1, a branch air inlet pipe valve 5 is installed on the acid gas branch air inlet pipe 4, and acid gas can enter the acid gas buffer tank 2 through the acid gas main air inlet pipe 1 or the acid gas branch air inlet pipe 4;
the outlet of the acid gas buffer tank 2 is connected with a lean solution main feeding pipe 11, the tail end of the lean solution main feeding pipe 11 is connected with a hydrogen sulfide primary concentration tower, and after the synthesis tail gas enters the acid gas buffer tank 2 and fully mixes and reacts with the acid gas, the synthesis tail gas can enter the hydrogen sulfide primary concentration tower through the lean solution main feeding pipe 11, and the hydrogen sulfide primary concentration tower further realizes the purification of the hydrogen sulfide; a main feed pipe multistage valve 12 is arranged in the middle section of the lean solution main feed pipe 11, a lean solution division feed pipe 13 is connected to the lean solution main feed pipe 11, and a division feed pipe valve 14 is arranged on the lean solution division feed pipe 13;
one end air pipe of the synthetic tail gas recovery system is connected with the main acid gas inlet pipe 1, the synthetic tail gas system comprises a synthetic tail gas buffer tank 6, a synthetic tail gas air pipe 7 is fixedly connected with an air outlet of the synthetic tail gas buffer tank 6, an air pipe valve 8 is installed on the synthetic tail gas air pipe 7, a tail gas main pipe 9 is connected with the middle section of the synthetic tail gas air pipe 7, a main pipe valve 10 is installed on the tail gas main pipe 9, and the synthetic tail gas system is used for supplying gas to the hydrogen sulfide system;
one end of the synthetic tail gas transmission pipe 7, which is far away from the synthetic tail gas buffer tank 6, is communicated with the main acid gas inlet pipe 1, so that the synthetic tail gas in the synthetic tail gas buffer tank 6 can enter the acid gas buffer tank 2 through the synthetic tail gas transmission pipe 7;
the pressure in the synthesis tail gas buffer tank 6 is larger than the pressure in the acid gas buffer tank 2, when the main pipe valve 10 is closed and the gas pipe valve 8 is slowly opened, the pressure in the synthesis tail gas buffer tank 6 is larger than the pressure in the acid gas buffer tank 2, so that the synthesis tail gas in the synthesis tail gas buffer tank 6 can enter the acid gas buffer tank 2 through the synthesis tail gas pipe 7, and the synthesis tail gas can be stably sent into a hydrogen sulfide system, thereby realizing the recycling of hydrogen sulfide later;
the synthetic tail gas delivery pipe 7 is communicated with the tail gas main pipe 9 through a three-way connection, so that the synthetic tail gas delivery pipe 7 can be connected with the tail gas main pipe 9 to form a pipeline, and meanwhile, the flow direction of the synthetic tail gas is controlled through opening and closing of a corresponding valve;
the gas pipe valve 8 is arranged at one end close to the main acid gas inlet pipe 1, the tail gas main pipe 9 is connected to the middle section between the gas pipe valve 8 and the synthetic tail gas buffer tank 6, when the abnormal condition occurs in the synthetic system, the main pipe valve 10 of the tail gas main pipe 9 can be slowly opened, and the gas pipe valve 8 entering the acid gas buffer tank 2 is closed, so that the synthetic tail gas in the gas pipe valve 8 can timely cut into a torch or a sulfur recovery system through the tail gas main pipe 9;
the main acid gas inlet pipe 1, the main acid gas inlet pipe 4, the main lean solution inlet pipe 11, the main lean solution inlet pipe 13, the synthesized tail gas conveying pipe 7 and the tail gas main pipe 9 are all made of stainless steel materials, and pipelines made of stainless steel materials also need to be subjected to flaw detection, purging, replacement and leakage test before being put into use, and can be put into use only after all the pipelines are detected to be qualified, so that the pipeline system cannot leak in the operation process.
When the utility model is used, the acid gas separation inlet pipe 4 is provided with the gas separation inlet pipe valve 5, acid gas can enter the acid gas buffer tank 2 through the acid gas main inlet pipe 1 or the acid gas separation inlet pipe 4, when the main pipe valve 10 is closed, the gas transmission pipe valve 8 is slowly opened, the pressure in the synthetic tail gas buffer tank 6 is larger than the pressure in the acid gas buffer tank 2, so that synthetic tail gas in the synthetic tail gas buffer tank 6 can enter the acid gas buffer tank 2 through the synthetic tail gas transmission pipe 7, and after the synthetic tail gas and the acid gas are fully mixed and reacted in the acid gas buffer tank 2, the synthetic tail gas can enter the hydrogen sulfide primary concentration tower through the lean solution main inlet pipe 11, and the purification of hydrogen sulfide is further realized by the hydrogen sulfide primary concentration tower; when the synthesis system is abnormal, the main pipe valve 10 of the tail gas main pipe 9 can be slowly opened, the gas pipe valve 8 entering the acid gas buffer tank 2 is closed, so that the synthesized tail gas in the gas pipe valve 8 can timely cut into a torch system or a sulfur recovery system through the tail gas main pipe 9, and accidents are prevented.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.
Claims (8)
1. The utility model provides a synthetic tail gas treatment tower which characterized in that: the acid gas buffer tank comprises an acid gas main air inlet pipe (1), an acid gas buffer tank (2) and a synthetic tail gas system, wherein one end, far away from an air inlet, of the acid gas main air inlet pipe (1) is connected with the acid gas buffer tank (2), a main air inlet pipe multi-stage valve (3) is arranged on the acid gas main air inlet pipe (1), an acid gas distribution inlet pipe (4) is connected to the middle section of the acid gas main air inlet pipe (1), and a gas distribution inlet pipe valve (5) is arranged on the acid gas distribution inlet pipe (4);
the device is characterized in that a lean solution main feeding pipe (11) is connected to the outlet of the acid gas buffer tank (2), a main feeding pipe multistage valve (12) is installed in the middle section of the lean solution main feeding pipe (11), a lean solution division feeding pipe (13) is connected to the lean solution main feeding pipe (11), and a division feeding pipe valve (14) is installed on the lean solution division feeding pipe (13);
one end air pipe of the synthesis tail gas system is connected with the main acid gas inlet pipe (1).
2. A synthetic tail gas treatment tower according to claim 1, wherein: the tail end of the lean liquid main feeding pipe (11) is connected with a hydrogen sulfide primary concentration tower.
3. A synthetic tail gas treatment tower according to claim 1, wherein: the synthesis tail gas system comprises a synthesis tail gas buffer tank (6), a gas outlet of the synthesis tail gas buffer tank (6) is fixedly connected with a synthesis tail gas delivery pipe (7), a gas delivery pipe valve (8) is installed on the synthesis tail gas delivery pipe (7), a tail gas main pipe (9) is connected to the middle section of the synthesis tail gas delivery pipe (7), and a main pipe valve (10) is installed on the tail gas main pipe (9).
4. A synthesis off-gas treatment tower according to claim 3, wherein: one end of the synthetic tail gas transmission pipe (7) far away from the synthetic tail gas buffer tank (6) is communicated with the main acid gas inlet pipe (1).
5. A synthesis off-gas treatment tower according to claim 3, wherein: the pressure in the synthesis tail gas buffer tank (6) is larger than that in the acid gas buffer tank (2).
6. A synthesis off-gas treatment tower according to claim 3, wherein: the synthetic tail gas delivery pipe (7) is connected with the tail gas main pipe (9) through a tee joint.
7. A synthesis off-gas treatment tower according to claim 3, wherein: the gas transmission pipe valve (8) is arranged at one end close to the main acid gas inlet pipe (1), and the tail gas main pipe (9) is connected to the middle section between the gas transmission pipe valve (8) and the synthetic tail gas buffer tank (6).
8. A synthesis off-gas treatment tower according to claim 3, wherein: the main acid gas inlet pipe (1), the main acid gas separating inlet pipe (4), the main lean solution inlet pipe (11), the lean solution separating inlet pipe (13), the synthesized tail gas conveying pipe (7) and the tail gas main pipe (9) are all made of stainless steel materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223580108.1U CN219385074U (en) | 2022-12-31 | 2022-12-31 | Synthetic tail gas treatment tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223580108.1U CN219385074U (en) | 2022-12-31 | 2022-12-31 | Synthetic tail gas treatment tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219385074U true CN219385074U (en) | 2023-07-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223580108.1U Active CN219385074U (en) | 2022-12-31 | 2022-12-31 | Synthetic tail gas treatment tower |
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| Country | Link |
|---|---|
| CN (1) | CN219385074U (en) |
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- 2022-12-31 CN CN202223580108.1U patent/CN219385074U/en active Active
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