CN212051269U - Atmospheric and vacuum low-pressure gas recycling system - Google Patents
Atmospheric and vacuum low-pressure gas recycling system Download PDFInfo
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- CN212051269U CN212051269U CN202020451602.XU CN202020451602U CN212051269U CN 212051269 U CN212051269 U CN 212051269U CN 202020451602 U CN202020451602 U CN 202020451602U CN 212051269 U CN212051269 U CN 212051269U
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Abstract
The utility model belongs to the technical field of atmospheric and vacuum low-pressure gas recovery processing, and relates to an atmospheric and vacuum low-pressure gas recovery and utilization system, which comprises a desulfurization tank, wherein one end of the top of the desulfurization tank is communicated with a gas conveying pipe through a Venturi tube ejector, the other end of the desulfurization tank is provided with a vertical spraying tank, the vertical spraying tank is communicated with the desulfurization tank, a gas outlet at the top of the vertical spraying tank is communicated with a hydrogen production pipeline, and the upper part in the vertical spraying tank is provided with a spraying distributor; an outlet at the bottom of the desulfurization tank is connected with a first inlet of a regeneration tower through a first pipeline, a first pressure pump is arranged on the first pipeline, an air outlet at the top of the regeneration tower is communicated with a circulating alkali liquor tank through a first liquid separation tank, a liquid outlet at the bottom of the regeneration tower is communicated with a liquid inlet of a spray distributor and an injection medium inlet of a venturi tube ejector through a recycling pipeline, and a second pressure pump is arranged on the recycling pipeline; and a liquid outlet at the bottom of the liquid separation tank I is communicated with a second inlet of the regeneration tower through a second pipeline. The utility model relates to a rationally, resources are saved on the one hand, and on the other hand avoids causing the pollution to the environment.
Description
Technical Field
The utility model relates to an atmospheric and vacuum low pressure gas recycle system belongs to atmospheric and vacuum low pressure gas recovery processing technology field.
Background
The discharged normal and reduced pressure low pressure gas after production has high content of sulfur salt, and the normal and reduced pressure low pressure gas is difficult to reuse due to low pressure, and the normal and reduced pressure gas is mainly combusted at present, so that on one hand, resource waste is caused, and on the other hand, sulfur-containing substances enter air to cause environmental pollution.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: overcome prior art's not enough, provide an atmospheric and vacuum low pressure gas recycle system, this atmospheric and vacuum low pressure gas recycle system's on the one hand can pressurize the material reuse in the back with atmospheric and vacuum low pressure gas, and on the other hand can be with the desorption of sulfur-containing material and with sulfur reuse, makes the resource obtain comparatively comprehensive utilization, resources are saved to effectively prevent during sulfur from entering into the air, cause the pollution to the environment.
The atmospheric and vacuum low-pressure gas recycling system comprises a desulfurization tank, one end of the top of the desulfurization tank is communicated with a gas conveying pipe through a Venturi tube ejector, the other end of the top of the desulfurization tank is provided with a vertical spraying tank, the vertical spraying tank is communicated with the desulfurization tank, a gas outlet at the top of the vertical spraying tank is communicated with a hydrogen production pipeline, and a spraying distributor is arranged at the upper part in the vertical spraying tank; an outlet at the bottom of the desulfurization tank is connected with a first inlet of a regeneration tower through a first pipeline, a first pressure pump is arranged on the first pipeline, an air outlet at the top of the regeneration tower is communicated with a circulating alkali liquor tank through a first liquid separation tank, a liquid outlet at the bottom of the regeneration tower is communicated with a liquid inlet of a spray distributor and an injection medium inlet of a venturi tube ejector through a recycling pipeline, and a second pressure pump is arranged on the recycling pipeline; and a liquid outlet at the bottom of the liquid separation tank I is communicated with a second inlet of the regeneration tower through a second pipeline.
The liquid in the desulfurizing tank and the jet medium in the Venturi ejector are both desulfurizing liquid. Atmospheric and reduced pressure low-pressure gas enters the system through a gas conveying pipe, is sprayed into a desulfurization tank by a Venturi tube sprayer, flows in the tank through the desulfurization tank and flows to a vertical spraying tank, the gas in the tank is in reverse contact with desulfurization liquid sprayed from the top of the tank in the vertical spraying tank for desulfurization again, and the desulfurized gas is conveyed to a hydrogen production device through a hydrogen production pipeline; after the desulfurization liquid in the desulfurization tank absorbs hydrogen sulfide in atmospheric and vacuum low-pressure gas, pressurizing a pregnant solution by a pressurizing pump I, then feeding the pregnant solution into a regeneration tower, after regeneration treatment of the regeneration tower, discharging the separated hydrogen sulfide from a gas outlet at the top of the regeneration tower, feeding the hydrogen sulfide into a circulating alkali liquor tank through a first liquid separating tank I to produce sodium hydrosulfide, and feeding the liquid in the first liquid separating tank back into the regeneration tower again; the liquid after regeneration treatment flows to the venturi ejector through a liquid outlet at the bottom of the regeneration tower and a part of the recycling pipeline to be used as jet power, and the other part flows to the vertical spraying tank to be used as spraying solution. The atmospheric and vacuum low-pressure gas is fully utilized, resources are saved, and sulfur is effectively prevented from entering air to pollute the environment.
Preferably, a third pressure pump is arranged on the second pipeline to pressurize the liquid and then flow into the regeneration tower again.
Preferably, a liquid outlet at the bottom of the regeneration tower is communicated with an inlet of a reboiler through a reboiling inlet pipeline, and an outlet of the reboiler is communicated with an inlet III of the regeneration tower through a reboiling outlet pipeline. The solubility of hydrogen sulfide in the desulfurization solution is obviously influenced by temperature, the solubility is high when the temperature is low, and the solubility is very low when the temperature is increased.
Preferably, the gas conveying pipe is provided with a second liquid separation tank for recovering the condensate carried by the atmospheric and vacuum low-pressure gas entering the recovery system.
Preferably, the hydrogen production pipeline is provided with a liquid separation tank III for carrying out gas-liquid separation on gas discharged from the vertical spraying tank.
Compared with the prior art, the utility model beneficial effect who has is:
the utility model has the advantages of reasonable design, can pressurize the material reuse in the back with atmospheric and vacuum low pressure gas on the one hand, on the other hand can be with the desorption of sulfur-containing material and with sulfur reuse, make the resource obtain comparatively comprehensive utilization, resources are saved to in effectively preventing sulfur from entering into the air, cause the pollution to the environment.
Drawings
FIG. 1 is a schematic structural diagram of an atmospheric and vacuum low-pressure gas recycling system.
In the figure: 1. a devulcanizer; 2. a liquid separating tank II; 3. a gas conveying pipe; 4. a venturi ejector; 5. a hydrogen production line; 6. liquid separating tank III; 7. a hydrogen production unit; 8. a vertical spray tank; 9. separating the liquid into a first liquid tank; 10. a circulating lye tank; 11. a second pipeline; 12. a third pressure pump; 13. a reboiled outlet line; 14. a reboiler; 15. a regeneration tower; 16. a reboil inlet line; 17. a first pressure pump; 18. reusing the pipeline; 19. a second pressure pump; 20. a first pipeline; 21. a spray distributor.
Detailed Description
The invention will be further described with reference to the accompanying drawings:
as shown in fig. 1, the atmospheric and vacuum low-pressure gas recycling system of the utility model comprises a desulfurization tank 1, one end of the top of the desulfurization tank 1 is communicated with a gas conveying pipe 3 through a venturi ejector 4, the other end is provided with a vertical spraying tank 8, the vertical spraying tank 8 is communicated with the desulfurization tank 1, the gas outlet at the top of the vertical spraying tank 8 is communicated with a hydrogen production pipeline 5, and the upper part in the vertical spraying tank 8 is provided with a spraying distributor 21; an outlet at the bottom of the desulfurizing tank 1 is connected with a first inlet of a regeneration tower 15 through a first pipeline 20, a first pressure pump 17 is arranged on the first pipeline 20, an air outlet at the top of the regeneration tower 15 is communicated with a circulating alkali liquor tank 10 through a first liquid separation tank 9, a liquid outlet at the bottom of the regeneration tower 15 is communicated with a liquid inlet of a spraying distributor 21 and a spraying medium inlet of a Venturi tube ejector 4 through a recycling pipeline 18, and a second pressure pump 19 is arranged on the recycling pipeline 18; the bottom liquid outlet of the liquid separation tank I9 is communicated with the inlet II of the regeneration tower 15 through a pipeline II 11.
In this embodiment:
a third booster pump 12 is arranged on the second pipeline 11, so that the liquid flows into the regeneration tower 15 again after being pressurized; a liquid outlet at the bottom of the regeneration tower 15 is communicated with an inlet of a reboiler 14 through a reboiling inlet pipeline 16, and an outlet of the reboiler 14 is communicated with an inlet III of the regeneration tower 15 through a reboiling outlet pipeline 13. The solubility of hydrogen sulfide in the desulfurization solution is obviously influenced by temperature, the solubility is high when the temperature is low, and the solubility is very low when the temperature is increased, so that the hydrogen sulfide is separated from the rich solution absorbing the hydrogen sulfide and changed into a gas phase after the rich solution is heated, and the gas phase is separated from the top of the regeneration tower 15, and the rich solution is changed into the desulfurization solution without the hydrogen sulfide again, thereby achieving the purpose of recycling.
A gas conveying pipe 3 is provided with a liquid separating tank II 2 for recovering the condensate carried by the atmospheric and vacuum low-pressure gas entering the recovery system; and a liquid separation tank III 6 is arranged on the hydrogen production pipeline 5, and gas and liquid are separated from the gas discharged from the vertical spraying tank 8.
The liquid in the desulfurizing tank 1 and the jet medium in the Venturi tube ejector 4 are both desulfurizing liquid. Atmospheric and vacuum low-pressure gas enters the system through a gas conveying pipe 3 and a liquid separating tank 2, is sprayed into a desulfurizing tank 1 through a Venturi pipe sprayer 4, flows to a vertical spraying tank 8 through the desulfurizing tank 1, and is reversely contacted with desulfurizing liquid sprayed from the top of the tank in the vertical spraying tank 8 for secondary desulfurization, and is conveyed to a hydrogen production device 7 through a hydrogen production pipeline 5; after the desulfurization solution in the desulfurization tank 1 absorbs hydrogen sulfide in atmospheric and vacuum low-pressure gas, pressurizing a rich solution by a pressurizing pump I17, then feeding the rich solution into a regeneration tower 15, performing regeneration treatment by the regeneration tower 15, discharging the separated hydrogen sulfide from a gas outlet at the top of the regeneration tower 15, feeding the hydrogen sulfide into a circulating alkali liquor tank 10 through a liquor separation tank I9 to produce sodium hydrosulfide, and feeding the liquor in the liquor separation tank I9 back into the regeneration tower 15 again; the regenerated liquid flows to the venturi ejector 4 through a liquid outlet at the bottom of the regeneration tower 15 and a part of the recycling pipeline 18 to be used as ejection power, and a part of the regenerated liquid flows to the vertical spraying tank 8 to be used as spraying solution. A part of a liquid outlet at the bottom of the regeneration tower 15 is reboiled by the reboiler 14 and then returns to the regeneration tower 15, and the heat of the pregnant solution regenerated into the desulfurization solution is continuously provided for the regeneration tower 15. The atmospheric and vacuum low-pressure gas is fully utilized, resources are saved, and sulfur is effectively prevented from entering air to pollute the environment.
Claims (5)
1. The utility model provides an atmospheric and vacuum low pressure gas recycle system which characterized in that: the device comprises a desulfurizing tank (1), wherein one end of the top of the desulfurizing tank (1) is communicated with a gas conveying pipe (3) through a Venturi tube ejector (4), the other end of the desulfurizing tank is provided with a vertical spraying tank (8), the vertical spraying tank (8) is communicated with the desulfurizing tank (1), a gas outlet at the top of the vertical spraying tank (8) is communicated with a hydrogen production pipeline (5), and a spraying distributor (21) is arranged at the inner upper part of the vertical spraying tank (8); an outlet at the bottom of the desulfurizing tank (1) is connected with a first inlet of a regeneration tower (15) through a first pipeline (20), a first pressure pump (17) is arranged on the first pipeline (20), an air outlet at the top of the regeneration tower (15) is communicated with a circulating alkali liquor tank (10) through a first liquid separation tank (9), a liquid outlet at the bottom of the regeneration tower (15) is communicated with a liquid inlet of a spraying distributor (21) and a spraying medium inlet of a Venturi tube sprayer (4) through a recycling pipeline (18), and a second pressure pump (19) is arranged on the recycling pipeline (18); the bottom liquid outlet of the liquid separation tank I (9) is communicated with the inlet II of the regeneration tower (15) through a pipeline II (11).
2. The atmospheric and vacuum low-pressure gas recycling system according to claim 1, wherein: a third pressure pump (12) is arranged on the second pipeline (11).
3. The atmospheric and vacuum low-pressure gas recycling system according to claim 1, wherein: a liquid outlet at the bottom of the regeneration tower (15) is communicated with an inlet of a reboiler (14) through a reboiling inlet pipeline (16), and an outlet of the reboiler (14) is communicated with an inlet III of the regeneration tower (15) through a reboiling outlet pipeline (13).
4. The atmospheric and vacuum low-pressure gas recycling system according to claim 1, wherein: a liquid separation tank II (2) is arranged on the gas conveying pipe (3).
5. The atmospheric and vacuum low-pressure gas recycling system according to claim 1, wherein: a liquid separating tank III (6) is arranged on the hydrogen production pipeline (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020451602.XU CN212051269U (en) | 2020-03-31 | 2020-03-31 | Atmospheric and vacuum low-pressure gas recycling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020451602.XU CN212051269U (en) | 2020-03-31 | 2020-03-31 | Atmospheric and vacuum low-pressure gas recycling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212051269U true CN212051269U (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020451602.XU Active CN212051269U (en) | 2020-03-31 | 2020-03-31 | Atmospheric and vacuum low-pressure gas recycling system |
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| CN (1) | CN212051269U (en) |
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2020
- 2020-03-31 CN CN202020451602.XU patent/CN212051269U/en active Active
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Effective date of registration: 20230505 Granted publication date: 20201201 |