CN103143248A - System for absorbing and desorbing low-content CO2 in industrial exhaust gas - Google Patents
System for absorbing and desorbing low-content CO2 in industrial exhaust gas Download PDFInfo
- Publication number
- CN103143248A CN103143248A CN2013100498718A CN201310049871A CN103143248A CN 103143248 A CN103143248 A CN 103143248A CN 2013100498718 A CN2013100498718 A CN 2013100498718A CN 201310049871 A CN201310049871 A CN 201310049871A CN 103143248 A CN103143248 A CN 103143248A
- Authority
- CN
- China
- Prior art keywords
- tower
- gas
- absorb
- flue gas
- reboiler
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007789 gas Substances 0.000 claims abstract description 37
- 238000010521 absorption reaction Methods 0.000 claims abstract description 28
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000003546 flue gas Substances 0.000 claims abstract description 22
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 230000008929 regeneration Effects 0.000 claims abstract description 11
- 238000011069 regeneration method Methods 0.000 claims abstract description 11
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 32
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 16
- 239000001569 carbon dioxide Substances 0.000 claims description 16
- 238000005201 scrubbing Methods 0.000 claims description 10
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 5
- 150000001412 amines Chemical class 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000005406 washing Methods 0.000 abstract 4
- 238000003795 desorption Methods 0.000 abstract 3
- 230000002378 acidificating effect Effects 0.000 abstract 1
- 238000006477 desulfuration reaction Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 8
- 239000002803 fossil fuel Substances 0.000 description 3
- 239000002440 industrial waste Substances 0.000 description 3
- JJWKPURADFRFRB-UHFFFAOYSA-N carbonyl sulfide Chemical compound O=C=S JJWKPURADFRFRB-UHFFFAOYSA-N 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- ODIGIKRIUKFKHP-UHFFFAOYSA-N (n-propan-2-yloxycarbonylanilino) acetate Chemical compound CC(C)OC(=O)N(OC(C)=O)C1=CC=CC=C1 ODIGIKRIUKFKHP-UHFFFAOYSA-N 0.000 description 1
- -1 alcohol amine Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention belongs to the flue gas CO2 recovery field, and provides a flue gas CO2 absorption and desorption system. The system comprises a washing tower, an absorbing tower and a desorbing tower, wherein the system also comprises a reboiler, a heat exchanger and a heater; a high-temperature raw gas enters the reboiler, and the heat of the raw gas is recovered to provide regeneration energy; the raw gas subjected to the preliminary cooling of the reboiler enters the washing tower, is sprayed by a washing liquid from the upper portion of the washing tower to remove acidic gases, and is cooled by the heat exchanger; and the cooled raw gas enters the absorbing tower, is absorbed by a lean solution of an absorption liquid, and is pumped to the desorbing tower for desorption, a qualified CO2 product is obtained at the top of the desorbing tower, and the absorbing liquid at the bottom is cooled through heat recovery and is afresh conveyed to the absorbing tower for absorbing the raw gas. Compared with systems in the prior art, the system provided by the invention has the advantages of increase of the raw gas heat recovery, desulfuration and denitration devices, obtaining of the CO2 gas having a purity of above 99% through the MEA absorption and desorption processes, reduction of the regeneration energy consumption of recovered CO2, and reduction of the MEA loss.
Description
[technical field]
The invention belongs to flue gas CO
2The recovery field, relate to specifically low content CO in a kind of industrial waste gas
2Absorb and resolution system.
[background technology]
Energy and environment have become the focal issue of global common concern.No matter be developed country or developing country, all a kind of inevitable choice of the strategy of sustainable development as the National Macroscopic Strategy for economic development.The carbon dioxide of most dischargings is caused by fossil fuel.According to the measuring and calculating of relevant department of European Union, occupy 80% of energy total amount to the share of 2010-2015 fossil fuels, fossil fuel is still the important energy that any one industrialized country relies on, and can not be replaced by other energy the short time.So capturing carbon dioxide is the important topic of carbon dioxide discharge-reduction from flue gas.
Because MEA is that the amine neutral and alkali is the strongest, it and CO
2Reaction is fast, and degree of purification is high, and its molecular weight is little, and therefore when weight concentration was identical, MEA had larger absorbability than other amine, the mode that the flue gas capturing carbon dioxide mainly adopts MEA to reclaim.As application number be 201010593246.6, name is called " a kind of low dividing potential drop mist chief culprit CO
2Technique " in disclose a kind of low dividing potential drop mist and reclaimed CO
2Technique, contain CO
2Content enters scrubbing tower less than the flue gas of 0.1MPa, enters absorption tower bottom through air-introduced machine, enters the regeneration gas condenser through the rich solution pump, then enters poor rich liquid heat exchanger, is sprayed into tower through the regenerator top; The absorption liquid decomposition discharges CO
2, flowed out by described regenerator tower top, enter regenerator condenser, then enter CO
2Separator; In the absorption tower, absorption liquid is the mixed alcohol amine aqueous solution, and corrosion inhibiter is mineral-type mantoquita, organic acid or organic salt, and anti-oxidant degradation agent is that lower valency contains the oxygen acylate; This technique has solved the perishable problem of equipment, reduces production and construction cost and operating cost, has that adsorption rate is fast, absorbability strong, CO
2The advantages such as purity is high, small investment.But its shortcoming is that absorption reaction heat is high, thereby the regeneration hear rate is high;
Contain SO in unstripped gas
2, during the sour gas such as COS, MEA reacts with it and generates unrenewable compound, and its vapour pressure is high simultaneously, thereby the loss of its solvent is larger.
[summary of the invention]
For overcoming defects, the invention provides low content carbon dioxide absorption and resolution system in a kind of industrial waste gas, on the basis of conventional process flow, increased recovery, the desulphurization denitration equipment of unstripped gas heat.Then absorb and the technical process of resolving through MEA, the purity of purifying out is at the carbon dioxide more than 99%.Reduce the regeneration energy consumption that reclaims carbon dioxide, reduce the MEA loss.
For achieving the above object, the present invention is by the following technical solutions:
A kind of flue gas CO
2Absorb and resolution system, comprise scrubbing tower, absorption tower and Analytic Tower, wherein, this system also comprises reboiler, heat exchanger and heater;
The unstrpped gas of high temperature enters reboiler, reclaims unstrpped gas institute heat content, is used for providing regenerated energy;
Unstrpped gas through the preliminary cooling of reboiler enters scrubbing tower, and sloughing sour gas through the cleaning solution of top spray, to carry out heat exchange by heat exchanger cooling;
The unstrpped gas cooling through heat exchange enters the absorption tower, pump is transported to the Analytic Tower parsing after the absorption liquid lean solution absorbs, obtain qualified carbon dioxide product at the top of Analytic Tower, the bottom absorption liquid through reclaim heat and cooling after, again be transported to the absorption tower and absorb unstrpped gas.
A kind of flue gas CO of the present invention
2Absorb and resolution system, wherein, CO in unstrpped gas
2Concentration≤20%, pressure≤50KPa.
A kind of flue gas CO of the present invention
2Absorb and resolution system, wherein, the cleaning solution of the top of scrubbing tower spray is NaHCO
3
A kind of flue gas CO of the present invention
2Absorb and resolution system, wherein, NaHCO
3Concentration be 20～30%.
A kind of flue gas CO of the present invention
2Absorb and resolution system, wherein, sour gas comprises SO
2, COS, NO
X
A kind of flue gas CO of the present invention
2Absorb and resolution system, wherein, the absorption liquid in the absorption tower is the alkanol amine, and MEA is more excellent, and the concentration of MEA is preferably 20%.
A kind of flue gas CO of the present invention
2Absorb and resolution system, wherein, be connected with heater between Analytic Tower and reboiler, heater is used for the heat recovery of Analytic Tower is utilized to reboiler.
A kind of flue gas CO of the present invention
2Absorb and resolution system, wherein, reboiler is a tubular heat exchanger, and tube side is the unstrpped gas of high temperature, and shell side is for needing the MEA solution of regeneration, by both heat exchange, unstrpped gas is carried out cooling the time, and heating needs the rich solution of regeneration.With directly compare with Steam Heating under usual condition, by the recovery to high temperature unstrpped gas heat, produce carbon dioxide per ton and can save approximately 400KW of the renewable sources of energy, reduced the regeneration energy consumption of carbon dioxide.
Compared with prior art, the present invention has following beneficial effect:
1) by the recovery to the raw gas heat heat, reduce the regeneration energy consumption that reclaims carbon dioxide, produce carbon dioxide per ton and can save approximately 400KW of the renewable sources of energy;
2) by the configuration of scrubbing tower, remove sour gas, make the absorbability of MEA strengthen, loss reduces, and the MEA amount of carbon dioxide-depleted per ton has lowered 20%(0.5kg).
Description of drawings
Fig. 1 is the schematic flow sheet of the embodiment of the present invention,
The 1-reboiler, 2-scrubbing tower, 3-absorption tower, 4-heat exchanger, 5-Analytic Tower, 6-heater.
[specific embodiment]
Embodiment 1
As shown in Figure 1, and the unstrpped gas of high temperature (approximately 380 ℃, CO
2Concentration≤20%, pressure≤50KPa) enter reboiler 1 reclaims unstrpped gas institute heat content, is used for providing regenerated energy;
Unstrpped gas through the preliminary cooling of reboiler enters scrubbing tower 2, through 20～30%NaHCO of top spray
3Slough SO
2, the COS(carbonyl sulfide), NO
XCarry out heat exchange etc. component by heat exchanger 4 cooling;
Enter absorption tower 3 through the cooling unstrpped gas of heat exchange, pump is transported to Analytic Tower 5 and resolves after the MEA lean solution absorbs, obtain the carbon dioxide product of purity 〉=99% at the top of Analytic Tower, the bottom absorption liquid through reclaim heat and cooling after, again be transported to the absorption tower and absorb unstrpped gas, be connected with heater between Analytic Tower and reboiler, heater is used for the heat recovery of Analytic Tower is utilized to reboiler.
Claims (8)
1. flue gas CO
2Absorb and resolution system, comprise scrubbing tower, absorption tower and Analytic Tower, it is characterized in that:
This system also comprises reboiler, heat exchanger and heater;
The unstrpped gas of high temperature enters reboiler, reclaims unstrpped gas institute heat content, is used for providing regenerated energy;
Unstrpped gas through the preliminary cooling of reboiler enters scrubbing tower, and sloughing sour gas through the cleaning solution of top spray, to carry out heat exchange by heat exchanger cooling;
The unstrpped gas cooling through heat exchange enters the absorption tower, pump is transported to the Analytic Tower parsing after the absorption liquid lean solution absorbs, obtain qualified carbon dioxide product at the top of Analytic Tower, the bottom absorption liquid through reclaim heat and cooling after, again be transported to the absorption tower and absorb unstrpped gas.
2. a kind of flue gas CO as claimed in claim 1
2Absorb and resolution system, it is characterized in that: CO in described unstrpped gas
2Concentration≤20%, pressure≤50KPa.
3. a kind of flue gas CO as claimed in claim 1
2Absorb and resolution system, it is characterized in that: the cleaning solution of the top spray of described scrubbing tower is NaHCO
3
4. a kind of flue gas CO as claimed in claim 3
2Absorb and resolution system, it is characterized in that: described NaHCO
3Concentration be 20～30%.
5. a kind of flue gas CO as claimed in claim 1
2Absorb and resolution system, it is characterized in that: described sour gas comprises SO
2, COS, NO
X
6. a kind of flue gas CO as claimed in claim 1
2Absorb and resolution system, it is characterized in that: the absorption liquid in described absorption tower is the alkanol amine.
7. a kind of flue gas CO as claimed in claim 6
2Absorb and resolution system, it is characterized in that: described alkanolamine is MEA.
8. a kind of flue gas CO as claimed in claim 7
2Absorb and resolution system, it is characterized in that: described reboiler is a tubular heat exchanger, and tube side is the unstrpped gas of high temperature, and shell side is for needing the MEA solution of regeneration, by both heat exchange, unstrpped gas is carried out cooling the time, and heating needs the rich solution of regeneration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100498718A CN103143248A (en) | 2013-02-08 | 2013-02-08 | System for absorbing and desorbing low-content CO2 in industrial exhaust gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100498718A CN103143248A (en) | 2013-02-08 | 2013-02-08 | System for absorbing and desorbing low-content CO2 in industrial exhaust gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103143248A true CN103143248A (en) | 2013-06-12 |
Family
ID=48541724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100498718A Pending CN103143248A (en) | 2013-02-08 | 2013-02-08 | System for absorbing and desorbing low-content CO2 in industrial exhaust gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103143248A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103599687A (en) * | 2013-10-17 | 2014-02-26 | 中国石油化工股份有限公司 | Reel falling film type poisonous and harmful gas absorption method |
| CN105214457A (en) * | 2014-06-05 | 2016-01-06 | 魏雄辉 | A kind of fume desulfuring and denitrifying Processes and apparatus |
| CN106268176A (en) * | 2015-05-22 | 2017-01-04 | 西安长庆科技工程有限责任公司 | A kind of raw natural gas depth decarburization technique |
| CN106334418A (en) * | 2016-10-20 | 2017-01-18 | 合肥创想能源环境科技有限公司 | Membrane-process carbon dioxide separating method |
| CN108579369A (en) * | 2018-03-21 | 2018-09-28 | 中冶京诚工程技术有限公司 | Coke oven flue gas multi-pollutant cooperative treatment system and method |
| CN109173596A (en) * | 2018-09-05 | 2019-01-11 | 中石化上海工程有限公司 | The method of ethylene oxide device pressure recovery energy |
| CN109529549A (en) * | 2017-09-22 | 2019-03-29 | 江苏新世纪江南环保股份有限公司 | Application of ultra-clean ammonia desulfurization technology to carbon capture process |
| CN109701360A (en) * | 2017-10-26 | 2019-05-03 | 中国石油化工股份有限公司 | In low-carbon alkene and acetic acid cooxidation product gas the removing of carbon dioxide with utilize apparatus and method |
| CN113332831A (en) * | 2021-05-06 | 2021-09-03 | 中太海事技术(上海)有限公司 | Ship tail gas dedusting, desulfurizing and decarbonizing integrated device and ship |
| CN116474470A (en) * | 2023-05-10 | 2023-07-25 | 江苏安达环保科技有限公司 | Wet-type desulfurizing equipment for electric precipitation |
| CN118751025A (en) * | 2024-07-24 | 2024-10-11 | 天府永兴实验室 | A low energy consumption heat pump assisted carbon dioxide capture system and capture process |
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| CN102869426A (en) * | 2010-03-31 | 2013-01-09 | 新日铁工程技术株式会社 | Carbon dioxide gas recovery device |
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2013
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| US20040035147A1 (en) * | 2002-08-21 | 2004-02-26 | Masaki Iijima | Plant and method for producing liquefied natural gas |
| JP2007284272A (en) * | 2006-04-13 | 2007-11-01 | Mitsubishi Heavy Ind Ltd | CO2 recovery device and CO2 recovery method |
| CN201643963U (en) * | 2009-12-31 | 2010-11-24 | 攀钢集团攀枝花钢铁研究院有限公司 | An absorption-desorption test device for acidic components |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103599687A (en) * | 2013-10-17 | 2014-02-26 | 中国石油化工股份有限公司 | Reel falling film type poisonous and harmful gas absorption method |
| CN105214457A (en) * | 2014-06-05 | 2016-01-06 | 魏雄辉 | A kind of fume desulfuring and denitrifying Processes and apparatus |
| CN105214457B (en) * | 2014-06-05 | 2018-04-17 | 魏雄辉 | A kind of fume desulfuring and denitrifying Processes and apparatus |
| CN106268176B (en) * | 2015-05-22 | 2018-11-13 | 西安长庆科技工程有限责任公司 | A kind of raw natural gas depth decarburization technique |
| CN106268176A (en) * | 2015-05-22 | 2017-01-04 | 西安长庆科技工程有限责任公司 | A kind of raw natural gas depth decarburization technique |
| CN106334418A (en) * | 2016-10-20 | 2017-01-18 | 合肥创想能源环境科技有限公司 | Membrane-process carbon dioxide separating method |
| CN109529549A (en) * | 2017-09-22 | 2019-03-29 | 江苏新世纪江南环保股份有限公司 | Application of ultra-clean ammonia desulfurization technology to carbon capture process |
| CN116603368A (en) * | 2017-09-22 | 2023-08-18 | 江苏新世纪江南环保股份有限公司 | Method for applying ultra-clean ammonia desulfurization technology to carbon capture process |
| CN109701360A (en) * | 2017-10-26 | 2019-05-03 | 中国石油化工股份有限公司 | In low-carbon alkene and acetic acid cooxidation product gas the removing of carbon dioxide with utilize apparatus and method |
| CN109701360B (en) * | 2017-10-26 | 2022-07-08 | 中国石油化工股份有限公司 | Device and method for removing and utilizing carbon dioxide in low-carbon olefin and acetic acid co-oxidation product gas |
| CN108579369A (en) * | 2018-03-21 | 2018-09-28 | 中冶京诚工程技术有限公司 | Coke oven flue gas multi-pollutant cooperative treatment system and method |
| CN108579369B (en) * | 2018-03-21 | 2023-06-27 | 中冶京诚工程技术有限公司 | A coke oven flue gas multi-pollutant collaborative treatment system and method |
| CN109173596A (en) * | 2018-09-05 | 2019-01-11 | 中石化上海工程有限公司 | The method of ethylene oxide device pressure recovery energy |
| CN109173596B (en) * | 2018-09-05 | 2021-05-18 | 中石化上海工程有限公司 | Method for recovering pressure energy of ethylene oxide device |
| CN113332831A (en) * | 2021-05-06 | 2021-09-03 | 中太海事技术(上海)有限公司 | Ship tail gas dedusting, desulfurizing and decarbonizing integrated device and ship |
| CN116474470A (en) * | 2023-05-10 | 2023-07-25 | 江苏安达环保科技有限公司 | Wet-type desulfurizing equipment for electric precipitation |
| CN118751025A (en) * | 2024-07-24 | 2024-10-11 | 天府永兴实验室 | A low energy consumption heat pump assisted carbon dioxide capture system and capture process |
| CN118751025B (en) * | 2024-07-24 | 2025-07-22 | 天府永兴实验室 | Low-energy-consumption heat pump assisted carbon dioxide capturing system and capturing process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: Han Qing Lu Pingsha town in Guangdong Province, Zhuhai City, No. 129, 519055 Applicant after: Zhuhai Common Low Carbon Technology Co., Ltd. Address before: Han Qing Lu Pingsha town in Guangdong Province, Zhuhai City, No. 129, 519055 Applicant before: Zhuhai GongTong Mechanical Equipment Co., Ltd. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: ZHUHAI GONGTONG MECHANICAL EQUIPMENT CO., LTD. TO: ZHUHAI COMMON LOW CARBON TECHNOLOGY CO., LTD. |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130612 |
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| RJ01 | Rejection of invention patent application after publication |