CN101264415A - Novel chemical absorbent for trapping and recovering carbon dioxide - Google Patents

Novel chemical absorbent for trapping and recovering carbon dioxide Download PDF

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Publication number
CN101264415A
CN101264415A CNA2008100312050A CN200810031205A CN101264415A CN 101264415 A CN101264415 A CN 101264415A CN A2008100312050 A CNA2008100312050 A CN A2008100312050A CN 200810031205 A CN200810031205 A CN 200810031205A CN 101264415 A CN101264415 A CN 101264415A
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gas
concentration
minutes
gaseous mixture
tail gas
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尹双凤
罗胜联
张晓文
代威力
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Hunan University
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Hunan University
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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

Abstract

The invention provides a chemical absorbent for recovery of carbon dioxide, which comprises organo-metallic compound and solvent; wherein, the organo-metallic compound is organo-metallic bismuth oxide or organo-metallic antimony oxide. The chemical absorbent for recovery of carbon dioxide has the advantages of strong absorptive capacity, high absorption and analytic speed, low regeneration temperature and energy consumption, no equipment loss, low cost of absorbent, simple preparation, innocuity and non-pollution, high stability and repeatability, and being applicable to recovery of carbon dioxide of flue gas, synthetic ammonia, natural gas, kiln gas and other industrial gases.

Description

A kind of novel chemical absorbent of trapping and recovering carbon dioxide
Technical field
The invention belongs to resource environment, chemical technology field, relate in particular to the new and effective chemical absorbent that is used for the collecting carbonic anhydride recovery.
Background technology
Carbon dioxide is topmost greenhouse gases.In past 20 years, be discharged into CO in the atmosphere 23/4 cause by combustion of fossil fuel.At present, CO in the atmosphere 2Content is up to 27,500 hundred million tons, annual CO in carbon cycle 2About 6,600 hundred million tons, but annual because of mankind's activity and 25,700,000,000 tons of CO of the extra generation of forest decay 2, the CO of these lacks of equilibrium 2Account for 3.9% of carbon cycle.Along with the quickening of global process of industrialization, there be not extensive utilization not produce CO 2New forms of energy before, fossil fuel still is the main energy sources of human modern society, therefore, CO 2Generation is with increasing.On the other hand, CO 2Be carbon resource the most cheap and the abundantest on the earth, can be used as industrial chemicals, refrigerant, oilfield stimulation agent, inert media, solvent and pressure source etc., at present the whole world has only 1.1 hundred million tons of CO every year 2By chemical fixation, purposes and consumption are respectively: synthetic 7,000 ten thousand tons of urea, inorganic carbonate are made 3,000 ten thousand tons, synthetic 6,000,000 tons of carbon monoxide, ten thousand tons of salicylic acid Synthetic 2s, propene carbonate composite number kiloton.Obviously, CO 2The chemical fixation amount less than 1% of CO2 discharge capacity.Current, how to reduce CO 2Discharging reduces CO in the atmosphere 2Concentration, be the human common difficulty that presses for solution most that faces now.
No matter be resource CO 2, still seal CO up for safekeeping 2, all relate to capture and separation of C O 2Etc. problem, exploitation corresponding C O has been attached great importance in countries in the world 2Recovery and purification and reutilization technology.CO for movable type 2Emission source such as vehicle exhaust will be realized CO 2Capture be unpractical.But, for CO 2Concentrate emission source (as thermal power plant, cement plant, steel mill, refinery etc.) to carry out CO 2It is possible capturing separation, also is feasible.Existing lot of documents has been reported CO 2The capture separation method, for example absorption and separation method, absorption method, membrane separation process, low temperature distillation method, hydrate, or the like.In these methods, the absorption and separation method is current only technology path that has entered industrial-scale pilot, and the main absorbent of employing is monoethanolamine (MEA process), does not also have to replace its method up to now.
Although MEA process has characteristics such as infiltration rate is fast, absorbability is strong, equipment size is little.But also there are a lot of problems in this method, and is big as steam consumption, and solution corrosion is strong, MEA easily with flue gas in oxygen irreversible side reaction (hereinafter to be referred as amine degradation, accessory substances such as oxidation generation amion acetic acid, glyoxalic acid and oxalic acid) takes place.These side reactions have caused a large amount of losses of amine, and the accessory substance of Sheng Chenging has aggravated the corrosion of equipment again simultaneously, form vicious circle thus, have influenced normally carrying out of producing.In order to address these problems, domestic and international many researchers have inquired into serial of methods, have obtained some effects.These methods concentrate on and adopt organic mixed amine solvent to replace single MEA.For example, BASF AG has developed and added N methyldiethanol amine (MDEA) in MEA solution, has improved the absorption of absorbent and has closed analytic properties, does not solve amine degradation and etching problem.China's Research Institute of Nanjing Chemical Industry Group is at low dividing potential drop CO such as flue gases 2The recovery field is studied for many years, and having developed with the monoethanolamine is main solvent, adds severally to have sterically hindered reactive amines, antioxidant and corrosion inhibiter and formed and be applicable to and reclaim low dividing potential drop CO 2Good composite absorber.This composite absorber has kept the advantage of monoethanolamine process, and solution absorbs CO 2Ability improves, and the regeneration energy consumption descends, and eliminates the degraded side reaction of monoethanolamine and oxygen substantially.But the resolution temperature height of MEA process, energy consumption still are not solved than problems such as height.At present, adopt MEA process recovery and storage CO in the world 2Expense be about 30 dollars per ton.Because expense is higher, this method does not have large tracts of land to promote.[list of references: J Environ Sci 20 (2008) 14; Chem Eng Process45 (2006) 1047; Ind Eng Chem Res 44 (2005) 3702; Ind Eng Chem Res 44 (2005) 3099; Energy 31 (2006) 1520; Catal Today 115 (2006) 2; Energy 27 (2002) 607; Chem Ind EngProcess 25 (2006) 918; Modern chemical industry 21 (2001) 53; Modern chemical industry 24 (2002) 47; Environmental Pollution and Control 25 (2003) 206; CN1403185; CN1354036; CN1546206; CN1546207; CN1660470; The gas chemical industry 29 (2004) 10; The gas chemical industry 28 (2003) 1; Applicating technology 28 (2001) 40; CN1076183; CN1657156; CN1895771; Polymer material science and engineering 16 (2000) 5; Energy 31 (2006) 2556.].
At the deficiency of existing absorbent, the present invention has developed a kind of new and effective absorbent.
Summary of the invention
The object of the present invention is to provide a kind of CO of being used for 2Capture the new and effective chemical absorbent that reclaims.
The present invention is used for CO 2Capture the new and effective absorbent that reclaims, it is characterized in that this chemical absorbent by organo-metallic compound and solvent composition, the chemical formula of organo-metallic compound is [XCH 2YCH 2Z] MOM[ZCH 2YCH 2X], wherein M is bismuth or antimony metal element, X, Z are substituted-phenyl, i.e. X=-C 6(R 1) (R 2) (R 3) (R 4), Z=-C 6(R 5) (R 6) (R 7) (R 8), R 1, R 2, R 3, R 4, R 5, R 6, R 7, R 8Can be selected from different substituted radicals, they can be identical, also can be different, X, Z group all form chemical bond with the metal M atom, Y is oxygen atom or sulphur atom, and Y and metallic atom M carry out intramolecular coordination, and the concentration of organometallic complex is 0.1～10 mol; Solvent is an organic compound.Solvent is an organic compound, preferred alcohols material, especially preferred ethylene glycol, propyl alcohol, ethanol etc.
Absorbent of the present invention is to CO 2Absorbability big, absorb and resolution speed fast, regeneration temperature and regeneration energy consumption are low, to the equipment free of losses, and absorbent is cheap and easy to get, nontoxic pollution-free, preparation simply, not halogen-containing element, stability height and can be repeatedly used.The present invention can be widely used in the CO of process gas such as flue gas, synthetic ammonia, natural gas, kiln gas 2Capture and reclaim.
The specific embodiment
The present invention will be further described below in conjunction with the embodiment of the invention and comparative example:
Embodiment 1
In being furnished with the 100ml stainless steel cauldron of air inlet and gas outlet, add organometallic complex 1 (R successively 1, R 2, R 3, R 4, R 5, R 6, R 7, R 8Be hydrogen, Y is a sulphur, and M is a bismuth) 8.4g, propyl alcohol 5ml, sealed reactor stirs and feeds CO after 5 minutes 2Concentration is 10% gaseous mixture (He/CO 2), CO 2The flow velocity of gaseous mixture is 50ml/min, utilizes CO in the gas chromatograph detection of dynamic tail gas that has thermal conductivity cell detector 2Concentration.In ventilation 6 minutes, almost detect in the tail gas less than CO 2, show CO 2Capture rate near 100%.Every liter of absorption liquid is to CO 2Absorptive capacity reached 67g.
Embodiment 2
In being furnished with the 100ml stainless steel cauldron of air inlet and gas outlet, add organometallic complex 1 (R successively 1, R 2, R 3, R 4, R 5, R 6, R 7, R 8Be hydrogen, Y is a sulphur, and M is a bismuth) 8.4g, ethylene glycol 5ml, sealed reactor stirs and feeds CO after 5 minutes 2Concentration is 10% gaseous mixture (He/CO 2), CO 2The flow velocity of gaseous mixture is 50ml/min, utilizes CO in the gas chromatograph detection of dynamic tail gas that has thermal conductivity cell detector 2Concentration.In ventilation 6 minutes, almost detect in the tail gas less than CO 2, show CO 2Capture rate near 100%.Every liter of absorption liquid is to CO 2The absorptive capacity of gas has reached 67g.
Embodiment 3
In being furnished with the 100ml stainless steel cauldron of air inlet and gas outlet, add organometallic complex 2 (R successively 1, R 2, R 3, R 4, R 5, R 6, R 7, R 8Be hydrogen, Y is an oxygen, and M is a bismuth) 8.1g, propane diols 2ml, sealed reactor stirs and feeds CO after 5 minutes 2Concentration is 10% gaseous mixture (He/CO 2), CO 2The flow velocity of gaseous mixture is 50ml/min, utilizes CO in the gas chromatograph detection of dynamic tail gas that has thermal conductivity cell detector 2Concentration.In ventilation 6 minutes, almost detect in the tail gas less than CO 2, show CO 2Capture rate near 100%.Every liter of absorption liquid is to CO 2The absorptive capacity of gas has reached 160g.
Embodiment 4
In being furnished with the 100ml stainless steel cauldron of air inlet and gas outlet, add organometallic complex 2 (R successively 1, R 2, R 3, R 4, R 5, R 6, R 7, R 8Be hydrogen, Y is an oxygen, and M is a bismuth) 8.1g, ethylene glycol 5ml, sealed reactor stirs and feeds CO after 5 minutes 2Concentration is 10% gaseous mixture (He/CO 2), CO 2The flow velocity of gaseous mixture is 50ml/min, utilizes CO in the gas chromatograph detection of dynamic tail gas that has thermal conductivity cell detector 2Concentration.In ventilation 6 minutes, almost detect in the tail gas less than CO 2, show CO 2Capture rate near 100%.Every liter of absorption liquid is to CO 2The absorptive capacity of gas has reached 68g.
Embodiment 5
In being furnished with the 100ml stainless steel cauldron of air inlet and gas outlet, add organometallic complex 3 (R successively 1, R 2, R 3, R 4, R 5, R 6, R 7, R 8Be hydrogen, Y is an oxygen, and M is an antimony) 6.4g, ethylene glycol 10ml, sealed reactor stirs and feeds CO after 5 minutes 2Concentration is 10% gaseous mixture (He/CO 2), CO 2The flow velocity of gaseous mixture is 50ml/min, utilizes CO in the gas chromatograph detection of dynamic tail gas that has thermal conductivity cell detector 2Concentration.In ventilation 6 minutes, almost detect in the tail gas less than CO 2, show CO 2Capture rate near 100%.Every liter of absorption liquid is to CO 2The absorptive capacity of gas has reached 40g.
Embodiment 6
In being furnished with the 100ml stainless steel cauldron of air inlet and gas outlet, add organometallic complex 3 (R successively 1, R 2, R 3, R 4, R 5, R 6, R 7, R 8Be hydrogen, Y is an oxygen, and M is an antimony) 6.4g, propane diols 5ml, sealed reactor stirs and feeds CO after 5 minutes 2Concentration is 10% gaseous mixture (He/CO 2), CO 2The flow velocity of gaseous mixture is 50ml/min, utilizes CO in the gas chromatograph detection of dynamic tail gas that has thermal conductivity cell detector 2Concentration.In ventilation 6 minutes, almost detect in the tail gas less than CO 2, show CO 2Capture rate near 100%.Every liter of absorption liquid is to CO 2The absorptive capacity of gas has reached 65g.
Embodiment 7
In being furnished with the 100ml stainless steel cauldron of air inlet and gas outlet, add organometallic complex 4 (R successively 1, R 2, R 3, R 4, R 5, R 6, R 7, R 8Be hydrogen atom, Y is a sulphur atom, and M is an antimony metal) 6.7g, ethylene glycol 2ml, sealed reactor stirs and feeds CO after 5 minutes 2Concentration is 10% gaseous mixture (He/CO 2), CO 2The flow velocity of gaseous mixture is 50ml/min, utilizes CO in the gas-chromatography detection of dynamic tail gas that has thermal conductivity cell detector 2Concentration.In ventilation 6 minutes, almost detect in the tail gas less than CO 2, show CO 2Capture rate near 100%.Every liter of absorption liquid is to CO 2The absorptive capacity of gas has reached 164g.
Embodiment 8
In being furnished with the 100ml stainless steel cauldron of air inlet and gas outlet, add organometallic complex 4 (R successively 1, R 2, R 3, R 4, R 5, R 6, R 7, R 8Be hydrogen, Y is a sulphur, and M is an antimony) 6.7g, ethylene glycol 10ml, sealed reactor stirs and feeds CO after 5 minutes 2Concentration is 10% gaseous mixture (He/CO 2), CO 2The flow velocity of gaseous mixture is 50ml/min, utilizes CO in the gas chromatograph detection of dynamic tail gas that has thermal conductivity cell detector 2Concentration.In ventilation 6 minutes, almost detect in the tail gas less than CO 2, show CO 2Capture rate near 100%.Every liter of absorption liquid is to CO 2The absorptive capacity of gas has reached 39g.
Embodiment 9
In being furnished with the 100ml stainless steel cauldron of air inlet and gas outlet, add organometallic complex 5 (R successively 1Be methyl, R 2, R 3, R 4, R 5, R 6, R 7, R 8Be hydrogen, Y is a sulphur, and M is an antimony) 6.9g, ethylene glycol 5ml, sealed reactor stirs and feeds CO after 5 minutes 2Concentration is 10% gaseous mixture (He/CO 2), CO 2The flow velocity of gaseous mixture is 50ml/min, utilizes CO in the gas chromatograph detection of dynamic tail gas that has thermal conductivity cell detector 2Concentration.In ventilation 6 minutes, almost detect in the tail gas less than CO 2, show CO 2Capture rate near 100%.Every liter of absorption liquid is to CO 2The absorptive capacity of gas has reached 72g.
Embodiment 10
In being furnished with the 100ml stainless steel cauldron of air inlet and gas outlet, add organometallic complex 6 (R successively 1Be methyl, R 2, R 3, R 4, R 5, R 6, R 7, R 8Be hydrogen, Y is an oxygen, and M is an antimony) 6.6g, propane diols 5ml, sealed reactor stirs and feeds CO after 5 minutes 2Concentration is 10% gaseous mixture (He/CO 2), CO 2The flow velocity of gaseous mixture is 50ml/min, utilizes CO in the gas-chromatography detection of dynamic tail gas that has thermal conductivity cell detector 2Concentration.In ventilation 6 minutes, almost detect in the tail gas less than CO 2, show CO 2Capture rate near 100%.Every liter of absorption liquid is to CO 2The absorptive capacity of gas has reached 70g.
Embodiment 11
In being furnished with the 100ml stainless steel cauldron of air inlet and gas outlet, add organometallic complex 6 (R successively 1Be methyl, R 2, R 3, R 4, R 5, R 6, R 7, R 8Be hydrogen, Y is an oxygen, and M is an antimony) 6.6g, ethylene glycol 10ml, sealed reactor stirs and feeds CO after 5 minutes 2Concentration is 10% gaseous mixture (He/CO 2), CO 2The flow velocity of gaseous mixture is 50ml/min, utilizes CO in the gas chromatograph detection of dynamic tail gas that has thermal conductivity cell detector 2Concentration.In ventilation 6 minutes, almost detect in the tail gas less than CO 2, show CO 2Capture rate near 100%.Every liter of absorption liquid is to CO 2The absorptive capacity of gas has reached 40g.
Embodiment 12
In being furnished with the 100ml stainless steel cauldron of air inlet and gas outlet, add organometallic complex 6 (R successively 1Be methyl, R 2, R 3, R 4, R 5, R 6, R 7, R 8Be hydrogen, Y is an oxygen, and M is an antimony) 6.6g, ethylene glycol 5ml, sealed reactor stirs and feeds CO after 5 minutes 2Concentration is 10% gaseous mixture (He/CO 2), CO 2The flow velocity of gaseous mixture is 50ml/min, utilizes CO in the gas chromatograph detection of dynamic tail gas that has thermal conductivity cell detector 2Concentration.In ventilation 6 minutes, almost detect in the tail gas less than CO 2, show CO 2Capture rate near 100%.Every liter of absorption liquid is to CO 2The absorptive capacity of gas has reached 74g.
Embodiment 13
In being furnished with the 100ml stainless steel cauldron of air inlet and gas outlet, add organometallic complex 6 (R successively 1Be methyl, R 2, R 3, R 4, R 5, R 6, R 7, R 8Be hydrogen, Y is an oxygen, and M is an antimony) 6.6g, ethylene glycol 5ml, sealed reactor stirs and feeds CO after 5 minutes 2Concentration is 10% gaseous mixture (He/CO 2), CO 2The flow velocity of gaseous mixture is 50ml/min, utilizes CO in the gas chromatograph detection of dynamic tail gas that has thermal conductivity cell detector 2Concentration.In ventilation 6 minutes, almost detect in the tail gas less than CO 2, show CO 2Capture rate near 100%.Every liter of absorption liquid is to CO 2The absorptive capacity of gas has reached 72g.
Embodiment 14
In being furnished with the 100ml stainless steel cauldron of air inlet and gas outlet, add organometallic complex 7 (R successively 1Be methyl, R 2, R 3, R 4, R 5, R 6, R 7, R 8Be hydrogen, Y is an oxygen, and M is a bismuth) 8.2g, propane diols 5ml, sealed reactor stirs and feeds CO after 5 minutes 2Concentration is 10% gaseous mixture (He/CO 2), CO 2The flow velocity of gaseous mixture is 50ml/min, utilizes CO in the gas chromatograph detection of dynamic tail gas that has thermal conductivity cell detector 2Concentration.In ventilation 6 minutes, almost detect in the tail gas less than CO 2, show CO 2Capture rate near 100%.Every liter of absorption liquid is to CO 2The absorptive capacity of gas has reached 74g.
Embodiment 15
In being furnished with the 100ml stainless steel cauldron of air inlet and gas outlet, add organometallic complex 8 (R successively 1Be methyl, R 2, R 3, R 4, R 5, R 6, R 7, R 8Be hydrogen, Y is a sulphur, and M is a bismuth) 8.6g, propane diols 10ml, sealed reactor stirs and feeds CO after 5 minutes 2Concentration is 10% gaseous mixture (He/CO 2), CO 2The flow velocity of gaseous mixture is 50ml/min, utilizes CO in the gas chromatograph detection of dynamic tail gas that has thermal conductivity cell detector 2Concentration.In ventilation 6 minutes, almost detect in the tail gas less than CO 2, show CO 2Capture rate near 100%.Every liter of absorption liquid is to CO 2The absorptive capacity of gas has reached 42g.
Embodiment 16
In being furnished with the 100ml stainless steel cauldron of air inlet and gas outlet, add organometallic complex 9 (R successively 2Be methyl, R 1, R 3, R 4, R 5, R 6, R 7, R 8Be hydrogen, Y is an oxygen, and M is an antimony) 6.5g, ethylene glycol 5ml, sealed reactor stirs and feeds CO after 5 minutes 2Concentration is 10% gaseous mixture (He/CO 2), CO 2The flow velocity of gaseous mixture is 50ml/min, utilizes CO in the gas chromatograph detection of dynamic tail gas that has thermal conductivity cell detector 2Concentration.In ventilation 6 minutes, almost detect in the tail gas less than CO 2, show CO 2Capture rate near 100%.Every liter of absorption liquid is to CO 2The absorptive capacity of gas has reached 69g.
Embodiment 17
In being furnished with the 100ml stainless steel cauldron of air inlet and gas outlet, add organometallic complex 10 (R successively 2Be methyl, R 1, R 3, R 4, R 5, R 6, R 7, R 8Be hydrogen, Y is a sulphur, and M is an antimony) 6.8g, ethylene glycol 5ml, sealed reactor stirs and feeds CO after 5 minutes 2Concentration is 10% gaseous mixture (He/CO 2), CO 2The flow velocity of gaseous mixture is 50ml/min.Utilization has CO in the gas chromatograph detection of dynamic tail gas of thermal conductivity cell detector 2Concentration.In ventilation 6 minutes, almost detect in the tail gas less than CO 2, show CO 2Capture rate near 100%.Every liter of absorption liquid is to CO 2The absorptive capacity of gas has reached 74g.
Embodiment 18
In being furnished with the 100ml stainless steel cauldron of air inlet and gas outlet, add organometallic complex 10 (R successively 2Be methyl, R 1, R 3, R 4, R 5, R 6, R 7, R 8Be hydrogen atom, Y is a sulphur atom, and M is an antimony metal) 6.8g, ethylene glycol 5ml, sealed reactor stirs and feeds CO after 5 minutes 2Concentration is 10% gaseous mixture (He/CO 2), CO 2The flow velocity of gaseous mixture is 50ml/min, utilizes CO in the gas chromatograph detection of dynamic tail gas that has thermal conductivity cell detector 2Concentration.In ventilation 6 minutes, almost detect in the tail gas less than CO 2, show CO 2Capture rate near 100%.Every liter of absorption liquid is to CO 2The absorptive capacity of gas has reached 74g.
Embodiment 19
In being furnished with the 100ml stainless steel cauldron of air inlet and gas outlet, add organometallic complex 11 (R successively 2Be methyl, R 1, R 3, R 4, R 5, R 6, R 7, R 8Be hydrogen atom, Y is a sulphur atom, and M is the bismuth metal) 8.6g, ethylene glycol 10ml, sealed reactor stirs and feeds CO after 5 minutes 2Concentration is 10% gaseous mixture (He/CO 2), CO 2The flow velocity of gaseous mixture is 50ml/min, utilizes CO in the gas chromatograph detection of dynamic tail gas that has thermal conductivity cell detector 2Concentration.In ventilation 6 minutes, almost detect in the tail gas less than CO 2, show CO 2Capture rate near 100%.Every liter of absorption liquid is to CO 2The absorptive capacity of gas has reached 43g.
Embodiment 20
In being furnished with the 100ml stainless steel cauldron of air inlet and gas outlet, add organometallic complex 12 (R successively 2Be methyl, R 1, R 3, R 4, R 5, R 6, R 7, R 8Be hydrogen atom, Y is an oxygen atom, and M is the bismuth metal) 8.3g, ethylene glycol 5ml, sealed reactor stirs and feeds CO after 5 minutes 2Concentration is 10% gaseous mixture (He/CO 2), CO 2The flow velocity of gaseous mixture is 50ml/min, utilizes CO in the gas chromatograph detection of dynamic tail gas that has thermal conductivity cell detector 2Concentration.In ventilation 6 minutes, almost detect in the tail gas less than CO 2, show CO 2Capture rate near 100%.Every liter of absorption liquid is to CO 2The absorptive capacity of gas has reached 42g.
In order to further specify the superiority of catalyst of the present invention, select following absorbent for use as a comparison case.
Comparative example 1
In being furnished with the 100ml stainless steel cauldron of air inlet and gas outlet, add the 0.61g MEA successively, water 10ml, sealed reactor stirs and feeds CO after 5 minutes 2Concentration is 10% gaseous mixture (He/CO 2), CO 2The flow velocity of gaseous mixture is 50ml/min, utilizes CO in the gas chromatograph detection of dynamic tail gas that has thermal conductivity cell detector 2Concentration.In ventilation 6 minutes, CO in the tail gas 2Concentration raise gradually, rise to 2% by 0.5%, show CO 2Average capture rate be 87.5%.Every liter of absorption liquid is to CO 2The absorptive capacity of gas is 36g.
Comparative example 2
In being furnished with the 100ml stainless steel cauldron of air inlet and gas outlet, add MEA 0.49g successively, 2-(dimethylamino)-ethanol (DEAE) 0.18g, water 10ml, sealed reactor stirs and feeds CO after 5 minutes 2Concentration is 10% gaseous mixture (He/CO 2), CO 2The flow velocity of gaseous mixture is 50ml/min, utilizes CO in the gas chromatograph detection of dynamic tail gas that has thermal conductivity cell detector 2Concentration.In ventilation 6 minutes, CO in the tail gas 2Concentration raise gradually, rise to 1.8% by 0.4%, show CO 2Average capture rate be 89%.Every liter of absorption liquid is to CO 2The absorptive capacity of gas is 37g.

Claims (4)

1, a kind of novel chemical absorbent of trapping and recovering carbon dioxide is characterized in that this chemical absorbent by organo-metallic compound and solvent composition, and the chemical formula of organo-metallic compound is [XCH 2YCH 2Z] MOM[ZCH 2YCH 2X], wherein M is bismuth or antimony metal element, X, Z are substituted-phenyl, i.e. X=-C 6(R 1) (R 2) (R 3) (R 4), Z=-C 6(R 5) (R 6) (R 7) (R 8), R 1, R 2, R 3, R 4, R 5, R 6, R 7, R 8Can be selected from different substituted radicals, they can be identical, also can be different, X, Z group all form chemical bond with the metal M atom, Y is oxygen atom or sulphur atom, Y and metallic atom M carry out intramolecular coordination, and the concentration of organometallic complex is 0.1～10 mol, and solvent is an organic compound.
2, chemical absorbent according to claim 1 is characterized in that the R in the organometallic complex 1, R 2, R 3, R 4, R 5, R 6, R 7, R 8Preferred hydrogen atom or methyl.
3, chemical absorbent according to claim 1 is characterized in that the preferred alcohols material of organic solvent.
4, solvent according to claim 3 is characterized in that the preferred ethylene glycol of alcohols material, propyl alcohol or propane diols.
CNA2008100312050A 2008-05-06 2008-05-06 Novel chemical absorbent for trapping and recovering carbon dioxide Pending CN101264415A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010094884A2 (en) 2009-02-18 2010-08-26 Arkema France Method for capturing carbon oxides with a view to subsequently storing same
US7914758B2 (en) 2008-11-19 2011-03-29 Murray Kenneth D Captured CO2 from atmospheric, industrial and vehicle combustion waste
CN104226260A (en) * 2014-09-19 2014-12-24 湖南大学 Preparation and modification methods of metal-organic frame material Bi-BTC for adsorbing CO2

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7914758B2 (en) 2008-11-19 2011-03-29 Murray Kenneth D Captured CO2 from atmospheric, industrial and vehicle combustion waste
WO2010094884A2 (en) 2009-02-18 2010-08-26 Arkema France Method for capturing carbon oxides with a view to subsequently storing same
CN104226260A (en) * 2014-09-19 2014-12-24 湖南大学 Preparation and modification methods of metal-organic frame material Bi-BTC for adsorbing CO2
CN104226260B (en) * 2014-09-19 2016-02-10 湖南大学 A kind of CO absorption 2the preparation and modification method of metal-organic framework materials Bi-BTC
WO2016041317A1 (en) * 2014-09-19 2016-03-24 湖南大学 Preparation and modification methods for metal-organic framework material bi-btc adsorbing co2

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