CN102141336A - Device and method for gathering and liquefying carbon dioxide and generating nitrogen from smoke gas - Google Patents

Device and method for gathering and liquefying carbon dioxide and generating nitrogen from smoke gas Download PDF

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Publication number
CN102141336A
CN102141336A CN2011100739062A CN201110073906A CN102141336A CN 102141336 A CN102141336 A CN 102141336A CN 2011100739062 A CN2011100739062 A CN 2011100739062A CN 201110073906 A CN201110073906 A CN 201110073906A CN 102141336 A CN102141336 A CN 102141336A
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heat exchanger
outlet
nitrogen
carbon dioxide
connects
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CN2011100739062A
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李舒宏
丁洁
张小松
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Southeast University
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Southeast University
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/0228—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream
    • F25J3/0257—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream separation of nitrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/0228—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream
    • F25J3/0266—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream separation of carbon dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/04—Processes or apparatus using separation by rectification in a dual pressure main column system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2210/00—Processes characterised by the type or other details of the feed stream
    • F25J2210/70—Flue or combustion exhaust gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2215/00—Processes characterised by the type or other details of the product stream
    • F25J2215/04—Recovery of liquid products
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2215/00—Processes characterised by the type or other details of the product stream
    • F25J2215/50—Oxygen or special cases, e.g. isotope-mixtures or low purity O2
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2220/00—Processes or apparatus involving steps for the removal of impurities
    • F25J2220/80—Separating impurities from carbon dioxide, e.g. H2O or water-soluble contaminants
    • F25J2220/82—Separating low boiling, i.e. more volatile components, e.g. He, H2, CO, Air gases, CH4
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
    • F25J2230/08—Cold compressor, i.e. suction of the gas at cryogenic temperature and generally without afterstage-cooler
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
    • F25J2230/30—Compression of the feed stream
    • 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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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

The invention relates to a device and a method for gathering and liquefying carbon dioxide and generating nitrogen from smoke gas. The carbon dioxide in the smoke gas is liquified and separated out, and the smoke gas is cooled with full utilization of cold energy of separating waste nitrogen as residues. The smoke gas exhausted from a power plant sequentially passes through a filter (2), an adsorber (3), a first heat exchanger (4), a compressor (5), a second heat exchanger (6), a first throttle valve (7) and a first rectifying tower (8) through an air blower (1), pure carbon dioxide liquid is obtained at a lower tower of the first rectifying tower (8), a stream of a mixture of the nitrogen and oxygen obtained at an upper tower is used as a cooling medium for supplying the cold energy and is emptied subjected to heat exchange in the first heat exchanger (4) and the second heat exchanger (6), the other stream is throttled by a second throttle valve (10) and rectified by a second rectifying tower (11), the nitrogen, as another product of the composite system, is obtained from the upper tower of the rectifying tower, and liquid oxygen is obtained from the lower tower. With the adoption of the method, the energy is fully utilized, the energy consumption is lowered, and the purpose of saving energy is reached.

Description

The apparatus and method of collecting carbonic anhydride liquefaction and nitrogen production in the flue gas
Technical field
The present invention relates to utilize the method for compression, cooling that thereby the carbon dioxide in the flue gas, nitrogen condensation liquefaction are separated, belong to refrigeration and cryogenic technique field.
Background technology
Along with the quickening of global process of industrialization, economy develops rapidly, and people's living standard improves constantly, yet the fast industrial development process has also brought a huge problem---CO to people 2A large amount of dischargings.As everyone knows, CO 2Be one of arch-criminal who causes greenhouse effects, caused a series of serious environmental problem such as global warming, sea-level rise, species pathology even extinction.CO 2Mainly come from power plant and heavy industry, such as oil, cement, steel and iron industry etc.From the existing Economic Development Mode of China, the carbon emission amount of China will present growth trend faster in long period of time from now on.But, CO 2Be again a kind of important industrial products and industrial chemicals, have a very important role in industrial production and people's life, and along with the development of technology, demand also increases day by day, DEVELOPMENT PROSPECT is also more and more wide.In life, as the producing of food fresh keeping, soda, fire-fighting fire extinguishing etc.; In industrial production,, use CO more and more as industry such as machinery, metallurgy 2At present, CO 2Production scale less, coordinative composition of equipments is poor, makes the CO produce 2Product quality is low, and energy consumption is big.Some enterprise is specifically designed to CO from establishing 2The device of preparation, and other by-product CO 2Enterprise then think little of this resource, on the contrary it is wasted.
Make a general survey of the development of the world today, the situation day of the energy and environmental protection is becoming tight, and the high efficiency utilization of walking sustainable development, energy savings and the energy of the energy will become the final goal that people pursue.Therefore, CO 2Discharging and capture combine a large amount of CO that will discharging contain in the gas 2Enrichment is got up, and need to be used to CO 2Industry in, can reach the protection environment like this, can make full use of the energy again, be to kill two birds with one stone.
Current, the trapping technique of carbon dioxide has obtained development to a certain degree, relevant scholar has proposed various capture separation methods: solution absorption method, absorption method, membrane separation process, chemical combustion method, low temperature processing or the like, the whole bag of tricks all has pluses and minuses separately: the concentration of carbon dioxide height that solution absorption method traps, but this method only is applicable to from low concentration of carbon dioxide waste gas and removes carbon dioxide, and the flow process complexity, the running cost height, absorption liquid contains toxic; The scope of application of absorption method is little, requires the gas concentration lwevel in the unstripped gas can not be too low; Membrane separation technique only is suitable for that source of the gas is clean, the gas concentration lwevel of needs is not higher than 90% occasion, and this technology also is in the developmental research stage at home; The energy consumption of firing method and cost height.Because separating the main target of pursuing is technical feasibility and superiority economically, at these requirements, the present invention adopts compressed cooling liquid to divide method from carbon dioxide, capture the carbon dioxide in the flue gas, this method is compared the advantage with energy-conserving and environment-protective with traditional collecting carbonic anhydride method, feasibility is big technically, and is practical economical.
The main component of flue gas is carbon dioxide, nitrogen, oxygen and minor N O x, SO x, H 2Sour gas and solid particle polluters such as S, after the flue gas preliminary purification, can think that the main component of flue gas is carbon dioxide, nitrogen, oxygen, because three's critical point state difference, wherein the critical point of carbon dioxide and nitrogen and oxygen differs bigger, therefore can be by under a certain temperature, pressure, mist carry out compressed cooling liquidization, thus isolate carbon dioxide.
After carbon dioxide separation is come out, remaining mixture, be nitrogen and oxygen, have lower temperature, can provide needed cold in the separation process this moment with its low-temperature receiver as separation process, saved the energy, reduce energy consumption, made absorption or absorption type carbon dioxide capture system that this system and other are traditional compare, had advantage energy-conservation and that resource makes full use of.
The mixture of nitrogen and oxygen can be separated both by throttling and rectifying column again, obtains the another raw material of industry---nitrogen.
The hybrid system that liquefaction separating carbon dioxide that the present invention adopts and separation of nitrogen mutually combine, can make full use of the entrained cold of dirty nitrogen, and can obtain another product---nitrogen, save the energy, reduce energy consumption, obtained two kinds of separated products: carbon dioxide and oxygen.
Summary of the invention
Technical problem:The apparatus and method that the purpose of this invention is to provide the liquefaction of collecting carbonic anhydride in a kind of flue gas and nitrogen production, for capture and the branch separable flue gas that liquefies in carbon dioxide, reduce the energy resource consumption of separation process, obtain pure carbon dioxide, reach higher capture separative efficiency, solve traditional separation process power consumption greatly, may produce noxious material, the problem that separative efficiency is low, and the present invention is separating the same of liquefaction capturing carbon dioxide
The time, the nitrogen in the flue gas, oxygen separation are come out, obtain multiple separated product.
Technical scheme:This hybrid system is not used alkanolamine solution, does not adopt other methods with chemical reaction yet, separates and only adopt the method for compression, cooling, throttling that carbon dioxide is liquefied from flue gas, and therefore whole process can not produce noxious material.
In the flue gas in the device of collecting carbonic anhydride liquefaction and nitrogen production the outlet of air blast take over filter, the outlet of filter connects absorber, the outlet of absorber connects first heat exchanger, the exhanst gas outlet of first heat exchanger connects compressor, the outlet of compressor connects second heat exchanger, the exhanst gas outlet of second heat exchanger connects the first throttle valve, the outlet of first throttle valve connects first rectifying column, the bottom of first rectifying column is pure carbon dioxide liquid outlet, the outlet of first rectifier connects current divider, the outlet of current divider has two, wherein one connects first heat exchanger and second heat exchanger, and another connects second choke valve, and the outlet of second choke valve connects second rectifying column, the bottom of second rectifying column is the liquid oxygen outlet, and the top of second rectifying column is nitrogen outlet.
Collecting carbonic anhydride liquefaction will be introduced the collecting carbonic anhydride piece-rate system through air blast by the flue gas that power plant discharges with the production method of the device of nitrogen production in the flue gas, by filter solid particulate matter be filtered; Then flue gas is fed absorber, mainly remove NO x, SO x, H 2Sour gas such as S; The flue gas that to handle through preceding step carries out to a certain degree cooling by heat exchanger then; Flue gas by above step preliminary treatment after, again with it by compressor compresses, the heat exchanger cooling, the choke valve throttling separates obtaining liquid carbon dioxide rich solution; This part rich solution is fed rectifying column, obtain pure carbon dioxide liquid at the following tower of rectifying column, last tower obtains nitrogen, oxygen mixture; To be divided into two strands from the dirty nitrogen that last tower comes out, one is as the cooling medium that cold is provided, emptying after the heat exchange from first heat exchanger and second heat exchanger, one passes through rectifying column rectifying after by the choke valve throttling more in addition, obtain other product---the nitrogen of this hybrid system from the last tower of rectifying column, and tower obtains liquid oxygen down, and the end product of this hybrid system comprises carbon dioxide, nitrogen and oxygen.
Carbon dioxide is compared with other materials in the flue gas, has higher critical-temperature and critical pressure, therefore carbon dioxide therefrom can be separated by compression, cooling, throttling process.
Isolate after the carbon dioxide, remaining dirty nitrogen is carried out throttling and rectifying again, isolate nitrogen and oxygen.
The original state parameter is 398.15K, 0.1MPa flue gas be cooled to 323.15K, 0.1MPa, isotherm compression is to 5. 5MPa again, equipressure is cooled to 213.6K then, according to pressure tower under the rectifying column, determine that the pressure after the throttling is 6 atmospheric pressure, i.e. 0.6MPa, the temperature that have this moment is 158.9K, carbon dioxide becomes liquid, feeds rectifying column rectifying again, obtains pure carbon dioxide liquid.Remaining dirty nitrogen also has lower temperature after isolating carbon dioxide this moment, and along with the carrying out of separation process, the amount of dirty nitrogen can be come the more more, just the cold that dirty nitrogen had can get more and more, if this part cold is fully utilized, then can reduce the consumption of the energy in collecting carbonic anhydride and the liquefaction separation process, reach higher energy utilization rate.
Equally according to above-mentioned principle, a part of dirty nitrogen that has lower temperature directly by throttling and rectifying, is therefrom separated nitrogen, remaining oxygen, like this, separation process has not only obtained carbon dioxide, has also obtained other two kinds of products---nitrogen and oxygen.
Therefore, this hybrid system not only has energy savings, cut down the consumption of energy, and the characteristics of high arresting efficiency, and can also obtain multiple separated product, reach the purpose that resource makes full use of.
Beneficial effect:Effect of the present invention is remarkable, comprises following several aspect:
(1) liquefaction separating carbon dioxide process does not produce material poisonous, that pollution is arranged in this hybrid system.
(2) in this hybrid system, most of cold provides by separating the dirty nitrogen of residue, has made full use of resource, and energy savings cuts down the consumption of energy, and has improved arresting efficiency.
(3) in this hybrid system, not only obtain carbon dioxide, also obtained other product, liquid oxygen and purity nitrogen.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is a systematic schematic diagram of the present invention, comprising as lower device: air blast 1; Filter 2; Absorber 3; First heat exchanger 4, first heat exchanger 6; Compressor 5; First throttle valve 7, first throttle valve 10; First rectifying column 8, second rectifying column 11; Current divider 9.
The specific embodiment
What the present invention adopted is a kind of novel method of the separating carbon dioxide from smoke that liquefies.In Fig. 1; filter 2 is taken in the outlet of air blast 1; the outlet of filter 2 connects absorber 3; and absorber 3 in parallel at absorber 3 entrance and exit places; play the effect of voltage stabilizing and protection; the outlet of absorber 3 connects first heat exchanger 4; the exhanst gas outlet of first heat exchanger 4 connects compressor 5; compressor 5 outlets link to each other with first heat exchanger, 6 cooled object side entrances; second heat exchanger, 6 cooled object side outlets connect first throttle valve 7; the outlet of first throttle valve 7 connects first rectifying column 8; the bottom of first rectifying column 8 is pure carbon dioxide liquid outlets; the outlet on first rectifying column, 8 tops connects current divider 9, and the outlet of current divider 9 has two, and wherein one connects first heat exchanger 4 and second heat exchanger 6; another connects second choke valve 10; the bottom that the outlet of second choke valve 10 connects second rectifying column, 11, the second rectifying columns 11 is the liquid oxygen outlet, and the top of second rectifying column 11 is nitrogen outlets.
Collecting carbonic anhydride liquefaction will be introduced the collecting carbonic anhydride piece-rate system through air blast 1 by the flue gas that power plant discharges with the production method of the device of nitrogen production in the described flue gas, by filter 2 solid particulate matter be filtered; Then flue gas is fed absorber 3, mainly remove NO x, SO x, H 2Sour gas such as S; The cooling that to be undertaken to a certain degree by first heat exchanger 4 through the flue gas that preceding step was handled then; Flue gas by above step preliminary treatment after, again with it by compressor 5 compression, 6 coolings of second heat exchanger, 7 throttlings of first throttle valve separate obtaining liquid carbon dioxide rich solution; This part rich solution is fed first rectifying column 8, obtain pure carbon dioxide liquid at the following tower of first rectifying column 8, last tower obtains nitrogen, oxygen mixture; To be divided into two strands from the dirty nitrogen that last tower comes out, one is as the cooling medium that cold is provided, emptying after the heat exchange from first heat exchanger 4 and second heat exchanger 6, in addition one by after 10 throttlings of second choke valve again through 11 rectifying of second rectifying column, obtain other product---the nitrogen of this hybrid system from the last tower of rectifying column, and tower obtains liquid oxygen down, and the end product of this hybrid system comprises carbon dioxide, nitrogen and oxygen.

Claims (2)

1. the device of collecting carbonic anhydride liquefaction and nitrogen production in the flue gas, filter (2) is taken in the outlet that it is characterized in that air blast in this device (1), the outlet of filter (2) connects absorber (3), the outlet of absorber (3) connects first heat exchanger (4), the exhanst gas outlet of first heat exchanger (4) connects compressor (5), the outlet of compressor (5) connects second heat exchanger (6), the exhanst gas outlet of second heat exchanger (6) connects first throttle valve (7), the outlet of first throttle valve (7) connects first rectifying column (8), the bottom of first rectifying column (8) is pure carbon dioxide liquid outlet, the outlet on first rectifying column (8) top connects current divider (9), the outlet of current divider (9) has two, wherein one connects first heat exchanger (4) and second heat exchanger (6), another connects second choke valve (10), the outlet of second choke valve (10) connects second rectifying column (11), the bottom of second rectifying column (11) is the liquid oxygen outlet, and the top of second rectifying column (11) is nitrogen outlet.
2. the production method of collecting carbonic anhydride liquefaction and the device of nitrogen production in the flue gas as claimed in claim 1, it is characterized in that and to introduce the collecting carbonic anhydride piece-rate system by the flue gas that power plant discharges through air blast (1), solid particulate matter is filtered by filter (2); Then flue gas is fed absorber (3), mainly remove NO x, SO x, H 2Sour gas such as S; The flue gas that to handle through preceding step carries out to a certain degree cooling by first heat exchanger (4) then; Flue gas by above step preliminary treatment after, again with it by compressor (5) compression, second heat exchanger (6) cooling, first throttle valve (7) throttling separates obtaining liquid carbon dioxide rich solution; This part rich solution is fed first rectifying column (8), obtain pure carbon dioxide liquid at the following tower of first rectifying column (8), last tower obtains nitrogen, oxygen mixture; To be divided into two strands from the dirty nitrogen that last tower comes out, one is as the cooling medium that cold is provided, emptying after the heat exchange from first heat exchanger (4) and second heat exchanger (6), in addition one by after second choke valve (10) throttling again through second rectifying column (11) rectifying, obtain other product---the nitrogen of this hybrid system from the last tower of rectifying column, and tower obtains liquid oxygen down, and the end product of this hybrid system comprises carbon dioxide, nitrogen and oxygen.
CN2011100739062A 2011-03-25 2011-03-25 Device and method for gathering and liquefying carbon dioxide and generating nitrogen from smoke gas Pending CN102141336A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103277980A (en) * 2013-06-13 2013-09-04 东南大学 Carbon dioxide capture device utilizing both part oxygen-enriched combustion and nitrogen-and-oxygen separation
CN106477577A (en) * 2016-08-29 2017-03-08 新疆深冷气体有限公司 A kind of heat pump distillation produces device and the production method of ultra-high purity carbon dioxide
CN110296576A (en) * 2019-06-13 2019-10-01 天津大学 A kind of industrial smoke collecting carbonic anhydride and waste heat recycle integrated system
CN114852973A (en) * 2022-06-02 2022-08-05 西安本清化学技术有限公司 Method and system for synchronously preparing nitrogen and carbon dioxide from oil field boiler flue gas
CN115304440A (en) * 2022-08-25 2022-11-08 北京航天试验技术研究所 Integrated system and method for in-situ preparation of propellant of Mars surface carrier rocket

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CN1059294A (en) * 1990-07-31 1992-03-11 美国Boc氧气集团有限公司 Produce carbon dioxide and reclaim nitrogen and argon by-product by burnt gas
CN2606739Y (en) * 2003-03-14 2004-03-17 大连理工大学 CO2 purifying device by adsorptive fine disstillation
CN101285573A (en) * 2007-01-23 2008-10-15 气体产品与化学公司 Purification of carbon dioxide
CN101424478A (en) * 2007-10-25 2009-05-06 林德股份公司 Process for the separation of air by cryogenic distillation
CN202041043U (en) * 2011-03-25 2011-11-16 东南大学 Carbon dioxide gathering and liquefying and nitrogen production device in flue gas

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1059294A (en) * 1990-07-31 1992-03-11 美国Boc氧气集团有限公司 Produce carbon dioxide and reclaim nitrogen and argon by-product by burnt gas
CN2606739Y (en) * 2003-03-14 2004-03-17 大连理工大学 CO2 purifying device by adsorptive fine disstillation
CN101285573A (en) * 2007-01-23 2008-10-15 气体产品与化学公司 Purification of carbon dioxide
CN101424478A (en) * 2007-10-25 2009-05-06 林德股份公司 Process for the separation of air by cryogenic distillation
CN202041043U (en) * 2011-03-25 2011-11-16 东南大学 Carbon dioxide gathering and liquefying and nitrogen production device in flue gas

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103277980A (en) * 2013-06-13 2013-09-04 东南大学 Carbon dioxide capture device utilizing both part oxygen-enriched combustion and nitrogen-and-oxygen separation
CN103277980B (en) * 2013-06-13 2015-01-14 东南大学 Carbon dioxide capture device utilizing both part oxygen-enriched combustion and nitrogen-and-oxygen separation
CN106477577A (en) * 2016-08-29 2017-03-08 新疆深冷气体有限公司 A kind of heat pump distillation produces device and the production method of ultra-high purity carbon dioxide
CN106477577B (en) * 2016-08-29 2019-01-18 新疆深冷气体有限公司 A kind of device and production method of heat pump distillation production ultra-high purity carbon dioxide
CN110296576A (en) * 2019-06-13 2019-10-01 天津大学 A kind of industrial smoke collecting carbonic anhydride and waste heat recycle integrated system
CN114852973A (en) * 2022-06-02 2022-08-05 西安本清化学技术有限公司 Method and system for synchronously preparing nitrogen and carbon dioxide from oil field boiler flue gas
CN115304440A (en) * 2022-08-25 2022-11-08 北京航天试验技术研究所 Integrated system and method for in-situ preparation of propellant of Mars surface carrier rocket

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Application publication date: 20110803