CN105194995A - Method for trapping carbon dioxide in FCC smoke - Google Patents
Method for trapping carbon dioxide in FCC smoke Download PDFInfo
- Publication number
- CN105194995A CN105194995A CN201410293151.0A CN201410293151A CN105194995A CN 105194995 A CN105194995 A CN 105194995A CN 201410293151 A CN201410293151 A CN 201410293151A CN 105194995 A CN105194995 A CN 105194995A
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- CN
- China
- Prior art keywords
- flue gas
- absorption tower
- absorbent
- carbon dioxide
- ammonia
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- 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
-
- 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
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
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- Treating Waste Gases (AREA)
Abstract
The invention discloses a method for trapping carbon dioxide in fluidized catalytic cracking (FCC) smoke in the field of petrochemical engineering. The method is characterized by being composed of the steps that A, smoke enters an absorption tower from the bottom after being subjected to dust removal and makes contact with absorbent barren liquor entering the absorption tower from the upper portion in the absorption tower in the reverse direction at the same time, and CO2, SOx and NOx in smoke are absorbed by the absorbent barren liquor at the same time so that absorbent rich liquor can be formed; B, purified smoke subjected to absorption in the step A enters a water scrubber; C, absorbent rich liquor coming from the step A enters the upper portion of a desorber through a rich liquor pump and is subjected to desorption and regeneration in the desorber, and regenerated absorbent barren liquor exchanges heat with the absorbent rich liquor and then returns to the absorption tower through a barren liquor pump; D, desorbed gas in the step C enters a washing tower, and CO2 in the washed desorbed gas is collected, dried and compressed and is then recycled. According to the method, CO2 in trapped smoke reacts with SO2 and SO3 in smoke while being trapped, generated ammonium salt is made into nitrogen fertilizer by-products through concentration, crystallization and drying, combined removal of acid gas pollutant in smoke is achieved, and by-products chemical fertilizer is obtained.
Description
Technical field
The invention belongs to petrochemical industry, be specifically related to a kind of capture method of catalytic cracking FCC carbon dioxide in flue gas.
Background technology
CO in ammonia process trapping flue gas
2technology, existing many sections of patents and bibliographical information, but be only limitted to conceptual design and the work of preliminary experiment room, and published method is also only to the CO in flue gas
2trap, the SO in flue gas
2and SO
3etc. need at CO
2remove in advance before trapping.
Chinese patent CN101423214A discloses a kind of method and equipment thereof of catching carbon dioxide in generating plant flue gas by ammonia process, and the method utilizes the CO in ammonia absorption flue gas
2, then regenerated by generated carbonic hydroammonium rich solution heating desorption, ammoniacal liquor lean solution recycles.The method flow process is simple, and structure simplifies, and operating cost is low.But defect is: ammonia contained in the purified gas that absorption tower is discharged is not recycled, and pollutes and loses, flue gas needs first through desulfurization process simultaneously.
Chinese patent CN101298018A discloses a kind of method utilizing ammoniacal liquor to reclaim carbon dioxide from flue gas, and this patent has been set up two-stage absorption tower and do not had regenerator, absorbs part CO from first grade absorption tower
2after absorbing liquid enter into two-level absorption tower, through first grade absorption tower absorb after flue gas enter two-level absorption tower continue by reverse absorption, ammonia concn 10 ~ 15% used, absorb temperature 30 ~ 40 DEG C, the CO after first order absorption
2capture rate reaches 45 ~ 70%, the final CO after secondary absorbs
2capture rate can reach 80 ~ 94%.Ammoniacal liquor absorbs CO through two-stage
2rear generated ammonium bicarbonate soln is discharged and concentrates in storage tank, and then centrifugation, liquid enters absorption tower and recycles, and carbonic hydroammonium solid is after drying as production marketing.
Chinese patent CN101318651A disclose a kind of utilize ammoniacal liquor from flue gas, reclaim carbon dioxide equipment and method, the method increases by a recirculation cooler in middle and lower part, absorption tower, by heat up after absorbing liquid be cooled to lower temperature, thus improve to CO
2absorptivity.The absorption temperature that this patent provides is 20 ~ 30 DEG C, and ammonia concn is 1 ~ 4%, not containing SO in flue gas
2, increase ammonia stripping tower after absorption tower and desorber, to reduce the escaping of ammonia absorbed with desorption process, again will be provided to absorption tower Inner eycle from scrubbing tower low concentration ammoniacal liquor out after ammonia concentration and recovery through concentration tower and use.
Present patent application provides CO in a kind of trapping FCC flue gas
2method, be using ammoniacal liquor as absorbent, trapping flue gas in CO
2while, with the SO in flue gas
2and SO
3react, the ammonium sulfate generated, hydrogen sulfate ammonia, ammonium sulfite and bisulfite amine etc. are present in rich solution, make nitrogenous fertilizer byproduct, realize removing combining of acid gas in flue gas pollutant by concentrated, crystallization, drying, and by-product chemical fertilizer.
Summary of the invention
The object of this invention is to provide a kind of capture method of FCC carbon dioxide in flue gas, to the CO in FCC flue gas
2while carrying out trapping, also can remove the SO in flue gas
2, SO
3and NO
xdeng sour gas, realize the zero release of pollutant of FCC flue gas and other low dividing potential drop flue gas.
To achieve these goals, the technical solution used in the present invention is:
Trap a method for FCC carbon dioxide in flue gas, it is characterized in that being made up of following steps:
A. flue gas enters absorption tower from bottom after dedusting, contacts, the CO in flue gas with the absorbent lean solution entered from top, absorption tower is reverse in tower simultaneously
2, SO
xand NO
xgas simultaneously absorb by absorbent lean solution and become absorbent rich solution;
B. the gas cleaning gas after steps A absorbs enters water scrubber, with the ammonia in reclaiming clean gas, and forms ammoniacal liquor, sends into tank used for storing ammonia;
C. the absorbent rich solution come from steps A enters desorber top through rich solution pump, desorption and regeneration in desorber, returns to absorption tower after the absorbing liquid lean solution after regeneration and the heat exchange of absorbing liquid rich solution through lean pump;
D. the stripping gas in step C enters scrubbing tower, to reclaim the ammonia in stripping gas, and forms ammoniacal liquor, sends into tank used for storing ammonia; CO in stripping gas after washing
2recycle after collection, drying, compression.
A kind of method trapping FCC carbon dioxide in flue gas of the present invention, it is further characterized in that: in desorber, make the carbonate that formed in rich solution or bicarbonate or amino-acid salt decomposes go out CO by heating or the mode of steam stripping in step B
2, absorbing liquid is regenerated and is recovered CO
2absorbability again.
A kind of method trapping FCC carbon dioxide in flue gas of the present invention, it is further characterized in that: described absorbent is ammoniacal liquor, and ammonia concn is 1 ~ 20%, and absorbing temperature is 20 ~ 60 DEG C, and desorption temperature is 90 ~ 120 DEG C.The method is to CO in flue gas
2capture rate reach 80%, to SO in flue gas
2and SO
3removal efficiency can reach more than 95%, 30% is reached to the removal efficiency of NO.
A kind of method trapping FCC carbon dioxide in flue gas of the present invention, it is further characterized in that: in the middle part of absorption tower, connect cycle condenser, to cool the absorbing liquid in absorption tower, thus improves CO
2capture rate.
A kind of method trapping FCC carbon dioxide in flue gas of the present invention, it is further characterized in that: the gas cleaning gas after absorption enters water scrubber, with the ammonia in reclaiming clean gas, and forms ammoniacal liquor, sends in tank used for storing ammonia.When the ammonia concn reclaimed in storage tank reaches 1% ~ 5%, add in absorption tower as fresh absorbing liquid.
A kind of method trapping FCC carbon dioxide in flue gas of the present invention, it is further characterized in that: enter scrubbing tower from step C desorber stripping gas out, to reclaim the ammonia in stripping gas, and form ammoniacal liquor, sends in tank used for storing ammonia.When the ammonia concn reclaimed in storage tank reaches 1% ~ 5%, add in absorption tower as fresh absorbing liquid.
A kind of method trapping FCC carbon dioxide in flue gas of the present invention, it is further characterized in that: ammonia absorption agent absorbs with desorption process, to the CO in flue gas at continuous print
2while carrying out trapping, with the SO in flue gas
2, SO
3and O
2the ammonium salt compounds such as metastable ammonium sulfite, ammonium bisulfite, ammonium sulfate, ammonium hydrogen sulfate are formed Deng reaction, can react with the NO in flue gas in addition and generate ammonium nitrate and ammonium nilrite, because this type of material is difficult to decompose under prescribed conditions, can be accumulated in the absorbing liquid lean solution in desorber after desorption and regeneration, when the total concentration through detecting wherein sulfate and nitrate reaches more than 10% (percentage by weight wt), absorbing liquid lean solution after partial regeneration is discharged displacement, and part returns to absorption tower.The absorbing liquid lean solution displaced uses as composite chemical fertilizer after the technique such as concentrated, dry.
Compared with prior art, its feature is CO in the one trapping FCC flue gas described in this patent in the present invention
2method, be using ammoniacal liquor as absorbent, trapping flue gas in CO
2while, with the SO in flue gas
2and SO
3react, the ammonium sulfate generated, hydrogen sulfate ammonia, ammonium sulfite and bisulfite amine etc. are present in rich solution, can react with the NO in flue gas in addition and generate ammonium nitrate and ammonium nilrite, nitrogenous fertilizer byproduct is made by concentrated, crystallization, drying, realize removing combining of acid gas in flue gas pollutant, and by-product chemical fertilizer.
Accompanying drawing explanation
CO in Fig. 1 the present invention one trapping FCC flue gas
2method process schematic representation
Reference numeral shown in figure is: 1-absorption tower, 2-desorber, 3-water scrubber, 4-scrubbing tower, 5-poor rich liquid heat exchanger, 6-rich solution pump, 7-lean pump, 8-cycle condenser, 9-wet tank, 10-flue gas, 11-purified gas, and 12-water scrubber is intake, 13-CO
2gas, 14
-reclaim ammoniacal liquor, 15-washings, 16-condensed water.
Detailed description of the invention
Describe the present invention in detail with specific embodiment below, but these embodiments do not limit the scope of the invention.
Embodiment 1
A kind of FCC regenerated flue gas, CO wherein
2content is 10.5% (volume), SO
2content is 810ppm, NO content is 260ppm, flue gas enters packed absorber from bottom after cooling dedusting, the concentration of absorbent ammoniacal liquor used is 3.5% (weight), absorbing temperature is 40 DEG C, flue gas 10 contacts with the ammonia lean solution entered from top, absorption tower 1 is reverse in absorption tower 1, the CO in flue gas
2, SO
xand NO
xdeng gas absorb by ammoniacal liquor lean solution, partially absorb the cycle condenser 8 that liquid enters middle and lower part, absorption tower 1, through cooling water 16 cool after return to absorption tower again; The gas leaving absorption tower 1 enters water scrubber 3, and intaking with water scrubber 12 reversely to contact with the ammonia removed in gas, and be purified gas 11, wash temperature is 30 ~ 40 DEG C; And form recovery ammoniacal liquor 14, send into tank used for storing ammonia; Absorbent rich solution after absorption enters desorber 2 through rich solution pump 6 from top, in desorber 2, make the carbonate that formed in rich solution or bicarbonate or amino-acid salt decomposes go out CO by the mode of steam stripping
2, absorbing liquid is regenerated and is recovered CO
2absorbability again, desorption temperature 98 ~ 105 DEG C, the absorbing liquid lean solution after regeneration squeezes into absorption tower through lean pump 7 after poor rich liquid heat exchanger 5 with rich solution heat exchange; The gas desorbed enters scrubbing tower 4, and contact with the ammonia removed in gas with washings 15 are reverse, wash temperature is 30 ~ 40 DEG C, obtains CO
2gas 13, sends into tank used for storing ammonia from water scrubber 3 and scrubbing tower 4 recovery ammoniacal liquor 14 out, when the ammonia concn in tank used for storing ammonia reaches 3.0%, it can be used as fresh absorbing liquid to be back to absorption tower, from scrubbing tower CO out
2may be used in oil field with incremental oil production after drying compression.SO in flue gas
2with most NO
2with ammonia generate ammonium sulfate, ammonium sulfite and the form such as ammonium nilrite, ammonium nitrate exist with desorb after absorbent lean solution in, when its total concentration is greater than 10% after testing, absorbent lean solution after part desorb is drawn out in wet tank 9, and formed ammonium salt is sent into concentration tower, through concentrating and using as composite fertilizer after drying, supplement the fresh absorbing liquid of part simultaneously.The method is to CO in flue gas
2capture rate reach 85%, to SO in flue gas
2and SO
3removal efficiency can reach 99%, 42% is reached to the removal efficiency of NO.
Embodiment 2
A kind of FCC regenerated flue gas, CO wherein
2content is 9.9% (volume), SO
2content is 1050ppm, NO content is 182ppm, and flue gas enters packed absorber from bottom after cooling dedusting, the concentration of absorbent ammoniacal liquor used is 3.0% (weight), absorbing temperature is 30 DEG C, contacts, the CO in flue gas with the ammonia lean solution entered from top, absorption tower is reverse in tower simultaneously
2, SO
xand NO
xdeng gas absorb by ammoniacal liquor lean solution, water scrubber is connected behind absorption tower, with the ammonia in washing, purifying gas, wash temperature is 30 ~ 40 DEG C, rich solution after absorption enters desorber through rich solution pump from top, in desorber, make the carbonate that formed in rich solution or bicarbonate decomposes go out CO by the mode of steam stripping
2, absorbing liquid is regenerated and is recovered CO
2absorbability again, desorption temperature 98 ~ 100 DEG C, scrubbing tower is connected after desorber, to wash the ammonia in stripping gas, wash temperature is 30 ~ 40 DEG C, squeezes into absorption tower after the absorbing liquid lean solution after regeneration and rich solution heat exchange through lean pump, when the ammonia concn in water scrubber reach 3.0% and above time, fresh absorbing liquid is it can be used as to be back to absorption tower, from scrubbing tower CO out
2may be used in oil field with incremental oil production after drying compression.SO in flue gas
2generate ammonium sulfate, ammonium sulfite and ammonium nilrite, ammonium nitrate etc. with most NO and ammonia, when its total concentration is greater than 10%, formed ammonium salt is sent into concentration tower, through concentrating and using as composite fertilizer after drying, supplement the fresh absorbing liquid of part simultaneously.The method is to CO in flue gas
2capture rate reach 85%, to SO in flue gas
2and SO
3removal efficiency can reach 99%, 42% is reached to the removal efficiency of NO.
Embodiment 3
A kind of FCC regenerated flue gas, CO wherein
2content is 12.5% (volume), SO
2content is 610ppm, NO content is 210ppm, and flue gas enters packed absorber from bottom after cooling dedusting, the concentration of absorbent ammoniacal liquor used is 5.0% (weight), absorbing temperature is 50 DEG C, contacts, the CO in flue gas with the ammonia lean solution entered from top, absorption tower is reverse in tower simultaneously
2, SO
xand NO
xdeng gas absorb by ammoniacal liquor lean solution, water scrubber is connected behind absorption tower, with the ammonia in washing, purifying gas, wash temperature is 30 ~ 40 DEG C, rich solution after absorption enters desorber through rich solution pump from top, in desorber, make the carbonate that formed in rich solution or bicarbonate or amino-acid salt decomposes go out CO by the mode of steam stripping
2, absorbing liquid is regenerated and is recovered CO
2absorbability again, desorption temperature 100 ~ 110 DEG C, scrubbing tower is connected after desorber, to wash the ammonia in stripping gas, wash temperature is 30 ~ 40 DEG C, squeezes into absorption tower after the absorbing liquid lean solution after regeneration and rich solution heat exchange through lean pump, when the ammonia concn in water scrubber reach 5.0% and above time, fresh absorbing liquid is it can be used as to be back to absorption tower, from scrubbing tower CO out
2may be used in oil field with incremental oil production after drying compression.SO in flue gas
2generate ammonium sulfate, ammonium sulfite and ammonium nilrite, ammonium nitrate etc. with NO partly and ammonia, when its total concentration is greater than 10%, formed ammonium salt is sent into concentration tower, through concentrating and using as composite fertilizer after drying, supplement the fresh absorbing liquid of part simultaneously.This technique is to CO in flue gas
2capture rate reach 90%, to SO in flue gas
2and SO
3removal efficiency can reach 99%, 45% is reached to the removal efficiency of NO.
Claims (7)
1. trap a method for FCC carbon dioxide in flue gas, it is characterized in that being made up of following steps:
A. flue gas enters absorption tower from bottom after dedusting, contacts, the CO in flue gas with the absorbent lean solution entered from top, absorption tower is reverse in tower simultaneously
2, SO
xand NO
xgas simultaneously absorb by absorbent lean solution and become absorbent rich solution;
B. the gas cleaning gas after steps A absorbs enters water scrubber, with the ammonia in reclaiming clean gas, and forms ammoniacal liquor, sends into tank used for storing ammonia;
C. the absorbent rich solution come from steps A enters desorber top through rich solution pump, desorption and regeneration in desorber, returns to absorption tower after the absorbing liquid lean solution after regeneration and the heat exchange of absorbing liquid rich solution through lean pump;
D. the stripping gas in step C enters scrubbing tower, to reclaim the ammonia in stripping gas, and forms ammoniacal liquor, sends into tank used for storing ammonia; CO in stripping gas after washing
2recycle after collection, drying, compression.
2. the method for trapping FCC carbon dioxide in flue gas according to claim 1, is characterized in that: described absorbent is ammoniacal liquor.
3. the method for trapping FCC carbon dioxide in flue gas according to claim 2, is characterized in that: described ammonia concn is 1 ~ 20%.
4. the method for trapping FCC carbon dioxide in flue gas according to claim 1, it is characterized in that: the absorption temperature in described absorption tower is 20 ~ 60 DEG C, the desorption temperature of desorber is 90 ~ 120 DEG C.
5. the method for trapping FCC carbon dioxide in flue gas according to claim 1, is characterized in that: in the middle part of described absorption tower, connect cycle condenser, to cool the absorbing liquid in absorption tower, thus improves CO
2capture rate.
6. the method for trapping FCC carbon dioxide in flue gas according to claim 2, is characterized in that: when the ammonia concn reclaimed in tank used for storing ammonia is 1% ~ 5%, add in absorption tower as fresh absorbing liquid.
7. the method for trapping FCC carbon dioxide in flue gas according to claim 2, it is characterized in that: the absorbing liquid lean solution after described desorption and regeneration, when the total concentration through detecting wherein sulfate and nitrate reaches more than 10% (wt), absorbing liquid lean solution after partial regeneration is discharged displacement, and part returns to absorption tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410293151.0A CN105194995A (en) | 2014-06-19 | 2014-06-19 | Method for trapping carbon dioxide in FCC smoke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410293151.0A CN105194995A (en) | 2014-06-19 | 2014-06-19 | Method for trapping carbon dioxide in FCC smoke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105194995A true CN105194995A (en) | 2015-12-30 |
Family
ID=54943154
Family Applications (1)
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|---|---|---|---|
| CN201410293151.0A Pending CN105194995A (en) | 2014-06-19 | 2014-06-19 | Method for trapping carbon dioxide in FCC smoke |
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|---|---|
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106000048A (en) * | 2016-06-20 | 2016-10-12 | 广东上典环境保护工程有限公司 | Low-temperature desulfuration and denitration system |
| CN106669365A (en) * | 2016-12-15 | 2017-05-17 | 西安交通大学 | A thermal-electric co-drive amine CO2 capture system |
| CN108970359A (en) * | 2018-06-28 | 2018-12-11 | 山东师范大学 | A method of utilizing carbon dioxide in solution of potassium carbonate trapping flue gas |
| CN112387072A (en) * | 2019-08-16 | 2021-02-23 | 国家能源投资集团有限责任公司 | CO capture by absorption2Method and system of |
| US11279891B2 (en) | 2020-03-05 | 2022-03-22 | Saudi Arabian Oil Company | Systems and processes for direct crude oil upgrading to hydrogen and chemicals |
| CN114405246A (en) * | 2021-12-28 | 2022-04-29 | 中国矿业大学 | An energy-saving process suitable for low partial pressure CO2 capture and purification |
| CN115193235A (en) * | 2022-07-22 | 2022-10-18 | 碳索(杭州)能源环境科技有限公司 | Flue gas carbon capture absorption system suitable for wide range carbon dioxide concentration |
| CN115212708A (en) * | 2022-07-15 | 2022-10-21 | 碳索(杭州)能源环境科技有限公司 | Low-cost organic amine method flue gas carbon dioxide capture system and capture method thereof |
| CN115888372A (en) * | 2022-11-25 | 2023-04-04 | 中国华能集团清洁能源技术研究院有限公司 | System and method for producing carbonic acid nitrogen fertilizer by sequestration of flue gas carbon |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101318651A (en) * | 2007-06-04 | 2008-12-10 | Posco公司 | Equipment and method for recovering carbon dioxide from flue gas using ammonia water |
| CN102218261A (en) * | 2011-04-14 | 2011-10-19 | 清华大学 | Method and equipment for collecting carbon dioxide from fuel gas by using ammonia water fine spraying |
-
2014
- 2014-06-19 CN CN201410293151.0A patent/CN105194995A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101318651A (en) * | 2007-06-04 | 2008-12-10 | Posco公司 | Equipment and method for recovering carbon dioxide from flue gas using ammonia water |
| CN102218261A (en) * | 2011-04-14 | 2011-10-19 | 清华大学 | Method and equipment for collecting carbon dioxide from fuel gas by using ammonia water fine spraying |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106000048A (en) * | 2016-06-20 | 2016-10-12 | 广东上典环境保护工程有限公司 | Low-temperature desulfuration and denitration system |
| CN106000048B (en) * | 2016-06-20 | 2018-06-12 | 广东上典环境保护工程有限公司 | A kind of low-temp desulfurization and denitrating system |
| CN106669365A (en) * | 2016-12-15 | 2017-05-17 | 西安交通大学 | A thermal-electric co-drive amine CO2 capture system |
| CN108970359A (en) * | 2018-06-28 | 2018-12-11 | 山东师范大学 | A method of utilizing carbon dioxide in solution of potassium carbonate trapping flue gas |
| CN112387072A (en) * | 2019-08-16 | 2021-02-23 | 国家能源投资集团有限责任公司 | CO capture by absorption2Method and system of |
| US11279891B2 (en) | 2020-03-05 | 2022-03-22 | Saudi Arabian Oil Company | Systems and processes for direct crude oil upgrading to hydrogen and chemicals |
| CN114405246A (en) * | 2021-12-28 | 2022-04-29 | 中国矿业大学 | An energy-saving process suitable for low partial pressure CO2 capture and purification |
| CN114405246B (en) * | 2021-12-28 | 2022-11-01 | 中国矿业大学 | An energy-saving process suitable for low partial pressure CO2 capture and purification |
| CN115212708A (en) * | 2022-07-15 | 2022-10-21 | 碳索(杭州)能源环境科技有限公司 | Low-cost organic amine method flue gas carbon dioxide capture system and capture method thereof |
| CN115193235A (en) * | 2022-07-22 | 2022-10-18 | 碳索(杭州)能源环境科技有限公司 | Flue gas carbon capture absorption system suitable for wide range carbon dioxide concentration |
| CN115888372A (en) * | 2022-11-25 | 2023-04-04 | 中国华能集团清洁能源技术研究院有限公司 | System and method for producing carbonic acid nitrogen fertilizer by sequestration of flue gas carbon |
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