CN220418200U - Carbon dioxide capturing and recycling modularized device for ground oil-gas engineering - Google Patents
Carbon dioxide capturing and recycling modularized device for ground oil-gas engineering Download PDFInfo
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- CN220418200U CN220418200U CN202322024773.0U CN202322024773U CN220418200U CN 220418200 U CN220418200 U CN 220418200U CN 202322024773 U CN202322024773 U CN 202322024773U CN 220418200 U CN220418200 U CN 220418200U
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- Prior art keywords
- outlet
- heat exchanger
- amine liquid
- amine
- carbon dioxide
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 33
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 33
- 238000004064 recycling Methods 0.000 title abstract description 10
- 150000001412 amines Chemical class 0.000 claims abstract description 78
- 239000007788 liquid Substances 0.000 claims abstract description 52
- 230000008929 regeneration Effects 0.000 claims abstract description 30
- 238000011069 regeneration method Methods 0.000 claims abstract description 30
- 238000010521 absorption reaction Methods 0.000 claims abstract description 23
- PVXVWWANJIWJOO-UHFFFAOYSA-N 1-(1,3-benzodioxol-5-yl)-N-ethylpropan-2-amine Chemical compound CCNC(C)CC1=CC=C2OCOC2=C1 PVXVWWANJIWJOO-UHFFFAOYSA-N 0.000 claims abstract description 19
- QMMZSJPSPRTHGB-UHFFFAOYSA-N MDEA Natural products CC(C)CCCCC=CCC=CC(O)=O QMMZSJPSPRTHGB-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 238000011084 recovery Methods 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 30
- 239000003921 oil Substances 0.000 description 7
- 238000003795 desorption Methods 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- -1 alcohol amine Chemical class 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
Abstract
The utility model discloses a carbon dioxide capturing and recycling modular device for ground oil and gas engineering, which comprises a raw material gas separator, an MDEA absorption tower and a rich amine liquid flash tank which are sequentially connected, wherein the outlet of the rich amine liquid flash tank is connected with a filter, the rear end of the filter is connected with a heat exchanger, the first outlet of the heat exchanger is connected with an amine regeneration tower, and the bottom end of the amine regeneration tower is connected with a reboiler; the outlet pipeline of the reboiler is divided into two branches, one branch is connected with the lower part of the amine regeneration tower, the other branch is connected with a heat exchanger, the first outlet of the heat exchanger is connected with a lean amine liquid cooler, and the outlet of the lean amine liquid cooler is connected with the upper part of the MDEA absorption tower through a pipeline; the top end of the MDEA absorption tower is connected with a purified gas cooler, the outlet of the purified gas cooler is connected with a wet purified gas separator, and the outlet of the wet purified gas separator is communicated with pipeline gas; the lean-rich amine liquid exchanges heat in the heat exchanger, so that the energy utilization rate in the carbon dioxide capturing and recycling process is improved, and the energy consumption and the cost are reduced.
Description
Technical Field
The utility model relates to the technical field of carbon dioxide trapping, in particular to a carbon dioxide trapping and recycling modularized device for ground oil-gas engineering.
Background
Carbon dioxide is one of the main components of greenhouse gases that cause global warming, contributing up to 55% to the greenhouse effect. Coal-fired power plants are the largest industry for carbon dioxide emissions. Besides the influence of global warming, the carbon dioxide can be used as a chemical raw material, and the captured and purified carbon dioxide can be injected into an oil layer in a supercritical state to improve the oil extraction rate. It can be predicted that along with the development perfection of the trapping technology and the continuous expansion of the application range, carbon dioxide becomes an important resource for improving the development effect of oil fields and the recovery ratio of crude oil in China.
Carbon dioxide trapping, utilization and sealing are taken as the only way for realizing low-carbon utilization of high-carbon fuel, and are important technical means for realizing the aim of double carbon. Currently, important breakthrough has been made in development and application of carbon dioxide capturing technology and equipment, and the demonstration application of the carbon dioxide capturing technology is steadily advancing. At present, the carbon dioxide capturing and purifying process mainly takes an absorption tower and a desorption tower as main bodies, and alcohol amine solution is used as an absorbent. And obtaining high-purity carbon dioxide gas through chemical absorption and desorption. In the process, the main energy consumption is a reboiler at the bottom of the desorption tower, and the rich liquid is heated by water vapor to desorb carbon dioxide. During the absorption and desorption processes, a plurality of energy is not fully utilized, resulting in low energy utilization.
Disclosure of Invention
The utility model aims to provide a carbon dioxide capturing and recycling modular device for ground oil and gas engineering, which is used for solving the problems in the background art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the carbon dioxide capturing and recycling modularized device for the ground oil and gas engineering comprises a raw material gas separator, wherein an outlet of the raw material gas separator is connected with an MDEA absorption tower, the bottom end of the MDEA absorption tower is connected with a rich amine liquid flash tank, an outlet of the rich amine liquid flash tank is connected with a filter, the rear end of the filter is connected with a heat exchanger, a first outlet of the heat exchanger is connected with an amine regeneration tower, the bottom end of the amine regeneration tower is connected with a reboiler, steam is used as a heat source by the reboiler, the top end of the amine regeneration tower is connected with an amine regeneration tower top cooler, the amine regeneration tower top cooler is connected with a reflux tank, an outlet of the reflux tank is connected with the upper part of the amine regeneration tower, and a circulating pump is arranged on a pipeline connected with the amine regeneration tower;
the outlet pipeline of the reboiler is divided into two branches, one branch is connected with the lower part of the amine regeneration tower, the other branch is connected with the heat exchanger, the first outlet of the heat exchanger is connected with a lean amine liquid cooler, and the outlet of the lean amine liquid cooler is connected with the upper part of the MDEA absorption tower through a pipeline;
the top end of the MDEA absorption tower is connected with a purified gas cooler, an outlet of the purified gas cooler is connected with a wet purified gas separator, and an outlet of the wet purified gas separator is communicated with pipeline gas.
Preferably, the filter is provided with a plurality of sets of constituent multi-pass filters.
Preferably, an amine liquid circulating pump is arranged on a pipeline between the heat exchanger and the lean amine liquid cooler.
Preferably, the two inlets of the heat exchanger are respectively filled with lean amine liquid and rich amine liquid, and the lean amine liquid and the rich amine liquid exchange heat in the heat exchanger.
The beneficial effects are that: compared with the prior art, the utility model has the beneficial effects that: through the arrangement of the heat exchanger, the lean-rich amine liquid exchanges heat in the lean-rich amine liquid, so that the energy utilization rate in the carbon dioxide capturing and recycling process is improved, and the energy consumption and the cost are reduced.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a modularized carbon dioxide capturing and recycling device for ground oil and gas engineering.
In the accompanying drawings: 1-raw material gas separator, 2-MDEA absorption tower, 3-rich amine liquid flash tank, 4-filter, 5-heat exchanger, 6-amine regeneration tower, 7-reboiler, 8-amine regeneration tower top cooler, 9-reflux tank, 10-amine liquid circulating pump, 11-lean amine liquid cooler, 12-purified gas cooler, and 13-wet purified gas separator.
Description of the embodiments
In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced otherwise than as described herein, and therefore the present utility model is not limited to the specific embodiments of the disclosure that follow.
Examples
Referring to the drawings, in the embodiment of the utility model, a modularized device for capturing and recovering carbon dioxide for ground oil and gas engineering comprises a raw material gas separator 1, wherein an outlet of the raw material gas separator 1 is connected with an MDEA absorption tower 2, the bottom end of the MDEA absorption tower 2 is connected with a rich amine liquid flash tank 3, an outlet of the rich amine liquid flash tank 3 is connected with a filter 4, the filter 4 is provided with a plurality of groups of multi-channel filters, the rear end of the filter 4 is connected with a heat exchanger 5, a first outlet of the heat exchanger 5 is connected with an amine regeneration tower 6, the bottom end of the amine regeneration tower 6 is connected with a reboiler 7, steam is used as a heat source, the top end of the amine regeneration tower 6 is connected with an amine regeneration tower top cooler 8, the amine regeneration tower top cooler 8 is connected with a reflux tank 9, an outlet of the reflux tank 9 is connected with the upper part of the amine regeneration tower 6, and a circulating pump is arranged on a pipeline connected with the amine regeneration tower 6;
the outlet pipeline of the reboiler 7 is divided into two branches, one branch is connected with the lower part of the amine regeneration tower 6, the other branch is connected with the heat exchanger 5, a first outlet of the heat exchanger 5 is connected with a lean amine liquid cooler 11, an amine liquid circulating pump 10 is arranged on the pipeline between the heat exchanger 5 and the lean amine liquid cooler 11, two inlets of the heat exchanger 5 are respectively filled with lean amine liquid and rich amine liquid, the lean amine liquid and the rich amine liquid exchange heat in the heat exchanger 5, and an outlet of the lean amine liquid cooler 11 is connected with the upper part of the MDEA absorption tower 2 through a pipeline;
the top end of the MDEA absorption tower 2 is connected with a purified gas cooler 12, an outlet of the purified gas cooler 12 is connected with a wet purified gas separator 13, and an outlet of the wet purified gas separator 13 is communicated with pipeline gas.
The using process comprises the following steps:
when the device is used, combustible raw gas containing carbon dioxide enters an MDEA absorption tower 2 through a raw gas separator 1, amine liquid is sprayed from top to bottom in the MDEA absorption tower 2 to absorb carbon dioxide, and purified gas for removing carbon dioxide enters a pipeline gas main pipeline after being cooled and dehumidified through a purified gas cooler 12 and a wet purification gas separator 13; the amine liquid in the MDEA absorption tower 2 absorbs carbon dioxide to become rich amine liquid, the rich amine liquid is discharged from the bottom end, enters a heat exchanger 5 through a rich amine liquid flash tank 3 and a filter 4, exchanges heat and heats, then enters an amine regeneration tower 6, the rich amine liquid releases the absorbed carbon dioxide in the amine regeneration tower 6 to become lean amine liquid, the released carbon dioxide is subjected to concentrated recovery treatment, the lean amine liquid enters a reboiler 7 to be heated and reboiled, then enters the MDEA absorption tower 2 through a heat exchange of the heat exchanger 5 and a cooling pump 10 to spray, and the amine liquid can be recycled in the trapping and recovery process.
In the process, through the arrangement of the heat exchanger, the lean-rich amine liquid exchanges heat in the lean-rich amine liquid, so that the energy utilization rate in the carbon dioxide capturing and recycling process is improved, and the energy consumption and the cost are reduced.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and improvements can be made by those skilled in the art without departing from the spirit of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent.
Claims (4)
1. A carbon dioxide entrapment retrieves modularization device for ground oil gas engineering, its characterized in that: the novel energy-saving and energy-saving device comprises a raw material gas separator (1), wherein an outlet of the raw material gas separator (1) is connected with an MDEA absorption tower (2), the bottom end of the MDEA absorption tower (2) is connected with a rich amine liquid flash tank (3), the outlet of the rich amine liquid flash tank (3) is connected with a filter (4), the rear end of the filter (4) is connected with a heat exchanger (5), the first outlet of the heat exchanger (5) is connected with an amine regeneration tower (6), the bottom end of the amine regeneration tower (6) is connected with a reboiler (7), the reboiler (7) takes steam as a heat source, the top end of the amine regeneration tower (6) is connected with an amine regeneration tower top cooler (8), the outlet of the reflux tank (9) is connected with the upper part of the amine regeneration tower (6), and a circulating pump is arranged on a pipeline connected with the amine regeneration tower (6);
the outlet pipeline of the reboiler (7) is divided into two branches, one branch is connected with the lower part of the amine regeneration tower (6), the other branch is connected with the heat exchanger (5), a first outlet of the heat exchanger (5) is connected with a lean amine liquid cooler (11), and an outlet of the lean amine liquid cooler (11) is connected with the upper part of the MDEA absorption tower (2) through a pipeline;
the top end of the MDEA absorption tower (2) is connected with a purified gas cooler (12), an outlet of the purified gas cooler (12) is connected with a wet purified gas separator (13), and an outlet of the wet purified gas separator (13) is communicated with pipeline gas.
2. A carbon dioxide capture recovery modular device for surface oil and gas engineering according to claim 1, wherein: the filter (4) is provided with a plurality of groups of multi-channel filters.
3. A carbon dioxide capture recovery modular device for surface oil and gas engineering according to claim 1, wherein: an amine liquid circulating pump (10) is arranged on a pipeline between the heat exchanger (5) and the lean amine liquid cooler (11).
4. A carbon dioxide capture recovery modular device for surface oil and gas engineering according to claim 1, wherein: two inlets of the heat exchanger (5) are respectively filled with lean amine liquid and rich amine liquid, and the lean amine liquid and the rich amine liquid exchange heat in the heat exchanger (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322024773.0U CN220418200U (en) | 2023-07-29 | 2023-07-29 | Carbon dioxide capturing and recycling modularized device for ground oil-gas engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322024773.0U CN220418200U (en) | 2023-07-29 | 2023-07-29 | Carbon dioxide capturing and recycling modularized device for ground oil-gas engineering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220418200U true CN220418200U (en) | 2024-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322024773.0U Active CN220418200U (en) | 2023-07-29 | 2023-07-29 | Carbon dioxide capturing and recycling modularized device for ground oil-gas engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220418200U (en) |
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2023
- 2023-07-29 CN CN202322024773.0U patent/CN220418200U/en active Active
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