CN220531164U - CO (carbon monoxide) 2 Recycling system of gas in emptying cylinder - Google Patents
CO (carbon monoxide) 2 Recycling system of gas in emptying cylinder Download PDFInfo
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- CN220531164U CN220531164U CN202320466078.7U CN202320466078U CN220531164U CN 220531164 U CN220531164 U CN 220531164U CN 202320466078 U CN202320466078 U CN 202320466078U CN 220531164 U CN220531164 U CN 220531164U
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- 229910002091 carbon monoxide Inorganic materials 0.000 title claims abstract description 16
- 238000004064 recycling Methods 0.000 title claims abstract description 12
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims description 5
- 239000007789 gas Substances 0.000 claims abstract description 104
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000007788 liquid Substances 0.000 claims abstract description 51
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 46
- 238000005406 washing Methods 0.000 claims abstract description 44
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 25
- 238000001179 sorption measurement Methods 0.000 claims abstract description 15
- 238000003795 desorption Methods 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000003463 adsorbent Substances 0.000 claims description 7
- 238000010612 desalination reaction Methods 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 6
- 230000008901 benefit Effects 0.000 abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 3
- 235000011089 carbon dioxide Nutrition 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000011033 desalting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The utility model discloses a CO 2 System for recycling gas in emptying cylinder and CO 2 Tail gas outlet and H of desorber 2 The tail gas outlet of the S concentration tower is connected with the tail gas washing tower through a pipelineThe gas outlet of the tail gas washing tower is communicated with the gas inlet of the gas-liquid separating tank through a pipeline, the gas outlet of the gas-liquid separating tank is communicated with the gas inlet of the adsorption tower through a pipeline, the gas outlet of the adsorption tower is communicated with the gas inlet of the liquid nitrogen washing tower through a pipeline, the liquid outlet at the bottom of the liquid nitrogen washing tower is communicated with the cold medium inlet of the heat exchanger through a pipeline, the cold medium outlet of the heat exchanger is communicated with the gas inlet of the circulating gas compressor through a pipeline, and the gas outlet of the circulating gas compressor is communicated with the gas inlet of the methanol washing tower through a pipeline. The advantages are that: the utility model realizes the treatment of CO 2 CO and CO in the emptying cylinder 2 And N 2 The method saves resources, is beneficial to reducing carbon and emission, and can improve the economic benefit of enterprises.
Description
Technical field:
the present utility model relates to a gas recovery system, and more particularly to a CO 2 And a recycling system for the gas in the emptying cylinder.
The background technology is as follows:
low temperature methanol wash means that the catalyst will consist essentially of CO, H 2 、CO 2 、H 2 S crude methanol gas is sent into a methanol washing tower, CO2 and H2S are absorbed by lean methanol, and the washed gas is rich in CO 2 And H 2 Methanol of S component is passed through CO 2 Desorption unit, H 2 S concentration unit and methanol thermal regeneration unit for removing CO in rich methanol 2 And H 2 The S component forms lean methanol and is sent to a methanol washing unit to wash the crude gas.
The washed methanol-rich solution contains a large amount of carbon monoxide, and is subjected to the following CO 2 Desorption unit and H 2 And the S concentration unit is discharged from the tail gas emptying cylinder after desorption, the CO content in the tail gas discharged from the tail gas emptying cylinder is 10000-13000ppm, the pollution to the atmosphere can be caused, and meanwhile, the waste of CO resources can be caused.
The utility model comprises the following steps:
to solve the problem ofThe object of the present utility model is to provide a CO 2 And a recycling system for the gas in the emptying cylinder.
The utility model is implemented by the following technical scheme:
CO (carbon monoxide) 2 The recycling system of the gas in the emptying cylinder comprises CO 2 Desorber, H 2 S concentration tower, tail gas washing tower, gas-liquid separating tank, adsorption tower, liquid nitrogen washing tower, heat exchanger and circulating gas compressor;
the CO 2 Tail gas outlet of desorption tower and H 2 The tail gas outlet of the S concentration tower is communicated with the gas inlet of the tail gas washing tower through a pipeline, the gas outlet of the tail gas washing tower is communicated with the gas inlet of the gas-liquid separation tank through a pipeline, the gas outlet of the gas-liquid separation tank is communicated with the gas inlet of the adsorption tower through a pipeline, the gas outlet of the adsorption tower is communicated with the gas inlet of the liquid nitrogen washing tower through a pipeline, the bottom liquid outlet of the liquid nitrogen washing tower is communicated with the cold medium inlet of the heat exchanger through a pipeline, the cold medium outlet of the heat exchanger is communicated with the gas inlet of the circulating gas compressor through a pipeline, and the gas outlet of the circulating gas compressor is communicated with the gas inlet of the methanol washing tower through a pipeline.
Further, the device also comprises an analytical tower, a vacuum pump, a buffer tank, a reciprocating compressor and a cold dryer;
the adsorbent outlet of the adsorption tower is communicated with the adsorbent inlet of the desorption tower through a pipeline, the desorption gas outlet of the desorption tower is communicated with the air inlet of the vacuum pump through a pipeline, the air outlet of the vacuum pump is communicated with the air inlet of the buffer tank through a pipeline, the air outlet of the buffer tank is communicated with the air inlet of the reciprocating compressor through a pipeline, and the air outlet of the reciprocating compressor is communicated with the air inlet of the cold dryer through a pipeline.
Further, the top gas outlet of the liquid nitrogen washing tower is connected with the H through a pipeline 2 S concentration column middle N 2 The inlet is communicated.
Further, the liquid outlet of the gas-liquid separation tank is communicated with the liquid inlet of the desalination water tank through a pipeline, and the liquid outlet of the desalination water tank is communicated with the desalted water inlet of the tail gas washing tower through a pipeline.
The utility model has the advantages that:
the utility model uses CO 2 CO in the venting cylinder pipeline 2 Almost all the gas is recycled and is made into dry ice for takeaway, which not only can increase the income, but also can reduce the CO 2 The amount of atmospheric emissions. The CO gas is returned to the methanol washing tower to be used for preparing methanol together with the raw material gas after being pressurized to 1.8MPa by the compressor. The low-temperature nitrogen gas washed by liquid nitrogen is returned to the liquid nitrogen washing tower and used as stripping nitrogen gas, so that the load of the refrigerating unit is indirectly reduced. The utility model realizes the treatment of CO 2 CO and CO in the emptying cylinder 2 And N 2 The method saves resources, is beneficial to reducing carbon and emission, and can improve the economic benefit of enterprises.
Description of the drawings:
in order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of system connection in this embodiment.
In the figure: CO 2 Desorber 1, H 2 S concentration tower 2, tail gas washing tower 3, gas-liquid separating tank 4, adsorption tower 5, liquid nitrogen washing tower 6, heat exchanger 7, circulating gas compressor 8, methanol washing tower 9, analysis tower 10, vacuum pump 11, buffer tank 12, reciprocating compressor 13, cold dryer 14, desalination water tank 15.
The specific embodiment is as follows:
the following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1:
a CO as shown in FIG. 1 2 The recycling system of the gas in the emptying cylinder comprises CO 2 Desorber 1, H 2 S concentration tower 2, tail gas washing tower 3, gas-liquid separating tank 4, adsorption tower 5, liquid nitrogen washing tower 6, heat exchanger 7 and circulating gas compressor 8;
CO 2 tail gas outlet and H of desorber 1 2 The tail gas outlet of the S concentration tower 2 is communicated with the gas inlet of the tail gas washing tower 3 through a pipeline, the gas outlet of the tail gas washing tower 3 is communicated with the gas inlet of the gas-liquid separating tank 4 through a pipeline, the liquid outlet of the gas-liquid separating tank 4 is communicated with the liquid inlet of the desalination water tank 15 through a pipeline, and the liquid outlet of the desalination water tank 15 is communicated with the desalted water inlet of the tail gas washing tower 3 through a pipeline. The gas outlet of the gas-liquid separating tank 4 is communicated with the gas inlet of the adsorption tower 5 through a pipeline, the gas outlet of the adsorption tower 5 is communicated with the gas inlet of the liquid nitrogen washing tower 6 through a pipeline, and the gas outlet at the top of the liquid nitrogen washing tower 6 is communicated with H through a pipeline 2 N in the middle of S concentration tower 2 2 The inlet is communicated. The liquid outlet at the bottom of the liquid nitrogen washing tower 6 is communicated with the cold medium inlet of the heat exchanger 7 through a pipeline, the cold medium outlet of the heat exchanger 7 is communicated with the air inlet of the circulating gas compressor 8 through a pipeline, and the air outlet of the circulating gas compressor 8 is communicated with the air inlet of the methanol washing tower 9 through a pipeline
The embodiment also comprises a resolving tower 10, a vacuum pump 11, a buffer tank 12, a reciprocating compressor 13 and a cold dryer 14;
the adsorbent outlet of the adsorption tower 5 is communicated with the adsorbent inlet of the desorption tower 10 through a pipeline, the desorption gas outlet of the desorption tower 10 is communicated with the air inlet of the vacuum pump 11 through a pipeline, the air outlet of the vacuum pump 11 is communicated with the air inlet of the buffer tank 12 through a pipeline, the air outlet of the buffer tank 12 is communicated with the air inlet of the reciprocating compressor 13 through a pipeline, and the air outlet of the reciprocating compressor 13 is communicated with the air inlet of the cold dryer 14 through a pipeline.
The working description:
CO 2 desorber 1 and H 2 The tail gas discharged from the S concentration tower 2 firstly enters a tail gas washing tower 3 to be washed by desalted water, after removing part of water-soluble gas and impurities, the tail gas is sent into a gas-liquid separation tank 4 to be subjected to gas-liquid separation, the water contained in the gas is separated and then returned to a desalting water tank 15 for recycling, and the separated gas mainly contains CO and CO 2 And N 2 CO is adsorbed by the adsorption tower 5 2 After that, unabsorbed CO and N 2 Feeding into a liquid nitrogen washing tower 6 according to CO and N 2 The principle of the difference of boiling points of CO and N 2 Phase separation; after liquid nitrogen washing, uncondensed low temperature N 2 The nitrogen is discharged from the top gas outlet of the liquid nitrogen washing tower 6 and then returned to the liquid nitrogen washing tower 6 to be used as stripping nitrogen, so that the load of the refrigerating unit is indirectly reduced. After liquid nitrogen washing, the condensed liquid CO firstly enters a heat exchanger 7 to be heated, is converted into gaseous CO, is pressurized to 1.8Mpa by a circulating gas compressor 8, and returns to a methanol washing tower 9 to be used for preparing methanol together with raw gas.
CO is adsorbed in the adsorption tower 5 2 After the post adsorbent is resolved by the resolving tower 10, resolved CO 2 Dry ice is produced for sale via the cold dryer 14.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (4)
1. CO (carbon monoxide) 2 The recycling system of the gas in the emptying cylinder is characterized by comprising CO 2 Desorber, H 2 S concentration tower, tail gas washing tower, gas-liquid separating tank, adsorption tower, liquid nitrogen washing tower, heat exchanger and circulating gas compressor;
the CO 2 Tail gas outlet of desorption tower and H 2 The tail gas outlets of the S concentration towers are communicated with the gas inlet of the tail gas washing tower through pipelines, the gas outlets of the tail gas washing tower are communicated with the gas inlet of the gas-liquid separating tank through pipelines, and the gas-liquid separating tank is provided with a gas inlet of the gas-liquid separating tankThe gas outlet of the heat exchanger is communicated with the gas inlet of the circulating gas compressor through a pipeline, and the gas outlet of the circulating gas compressor is communicated with the gas inlet of the methanol washing tower through a pipeline.
2. A CO according to claim 1 2 The recycling system of the gas in the emptying cylinder is characterized by further comprising an analytical tower, a vacuum pump, a buffer tank, a reciprocating compressor and a cold dryer;
the adsorbent outlet of the adsorption tower is communicated with the adsorbent inlet of the desorption tower through a pipeline, the desorption gas outlet of the desorption tower is communicated with the air inlet of the vacuum pump through a pipeline, the air outlet of the vacuum pump is communicated with the air inlet of the buffer tank through a pipeline, the air outlet of the buffer tank is communicated with the air inlet of the reciprocating compressor through a pipeline, and the air outlet of the reciprocating compressor is communicated with the air inlet of the cold dryer through a pipeline.
3. A CO according to claim 1 2 The recycling system of the gas in the emptying cylinder is characterized in that a top gas outlet of the liquid nitrogen washing tower is connected with the H through a pipeline 2 S concentration column middle N 2 The inlet is communicated.
4. A CO according to claim 1 2 The recycling system of the gas in the emptying cylinder is characterized in that a liquid outlet of the gas-liquid separation tank is communicated with a liquid inlet of the desalination water tank through a pipeline, and a liquid outlet of the desalination water tank is communicated with a desalted water inlet of the tail gas washing tower through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320466078.7U CN220531164U (en) | 2023-03-09 | 2023-03-09 | CO (carbon monoxide) 2 Recycling system of gas in emptying cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320466078.7U CN220531164U (en) | 2023-03-09 | 2023-03-09 | CO (carbon monoxide) 2 Recycling system of gas in emptying cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220531164U true CN220531164U (en) | 2024-02-27 |
Family
ID=89960724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320466078.7U Active CN220531164U (en) | 2023-03-09 | 2023-03-09 | CO (carbon monoxide) 2 Recycling system of gas in emptying cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220531164U (en) |
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2023
- 2023-03-09 CN CN202320466078.7U patent/CN220531164U/en active Active
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