CN105289209A - Mixed organic solution for trapping CO2 and SO2 acid gas through phase transformation - Google Patents
Mixed organic solution for trapping CO2 and SO2 acid gas through phase transformation Download PDFInfo
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- CN105289209A CN105289209A CN201510675190.1A CN201510675190A CN105289209A CN 105289209 A CN105289209 A CN 105289209A CN 201510675190 A CN201510675190 A CN 201510675190A CN 105289209 A CN105289209 A CN 105289209A
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- organic solvents
- phase transformation
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- mixed
- sour gas
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- 230000009466 transformation Effects 0.000 title claims abstract description 39
- 239000002253 acid Substances 0.000 title abstract 2
- 239000003960 organic solvent Substances 0.000 claims abstract description 128
- 150000001412 amines Chemical class 0.000 claims abstract description 83
- 239000000203 mixture Substances 0.000 claims abstract description 9
- -1 alcohol amines Chemical class 0.000 claims abstract description 6
- 150000001298 alcohols Chemical class 0.000 claims abstract description 6
- 150000002148 esters Chemical class 0.000 claims abstract description 6
- 150000002170 ethers Chemical class 0.000 claims abstract description 6
- 150000002576 ketones Chemical class 0.000 claims abstract description 6
- 239000002250 absorbent Substances 0.000 claims description 60
- 230000002745 absorbent Effects 0.000 claims description 60
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 37
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 9
- SBZXBUIDTXKZTM-UHFFFAOYSA-N diglyme Chemical compound COCCOCCOC SBZXBUIDTXKZTM-UHFFFAOYSA-N 0.000 claims description 9
- 125000003916 ethylene diamine group Chemical group 0.000 claims description 7
- DLFVBJFMPXGRIB-UHFFFAOYSA-N Acetamide Chemical group CC(N)=O DLFVBJFMPXGRIB-UHFFFAOYSA-N 0.000 claims description 6
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 claims description 6
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims description 6
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 6
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical class CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 6
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 claims description 6
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 claims description 5
- SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical compound COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 claims description 5
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 5
- 229940043237 diethanolamine Drugs 0.000 claims description 5
- 229960001124 trientine Drugs 0.000 claims description 5
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 4
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 claims description 4
- 229920000768 polyamine Polymers 0.000 claims description 4
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 4
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical compound CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 claims description 2
- SIXOAUAWLZKQKX-UHFFFAOYSA-N carbonic acid;prop-1-ene Chemical compound CC=C.OC(O)=O SIXOAUAWLZKQKX-UHFFFAOYSA-N 0.000 claims description 2
- WFKAJVHLWXSISD-UHFFFAOYSA-N isobutyramide Chemical compound CC(C)C(N)=O WFKAJVHLWXSISD-UHFFFAOYSA-N 0.000 claims description 2
- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical compound NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 8
- 238000011069 regeneration method Methods 0.000 abstract description 5
- 230000008929 regeneration Effects 0.000 abstract description 4
- 230000003009 desulfurizing effect Effects 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000000746 purification Methods 0.000 abstract description 2
- 239000006096 absorbing agent Substances 0.000 abstract 2
- 150000001408 amides Chemical class 0.000 abstract 2
- 150000004985 diamines Chemical class 0.000 abstract 2
- 239000012071 phase Substances 0.000 description 32
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 18
- 239000003546 flue gas Substances 0.000 description 18
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 16
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 15
- 238000010521 absorption reaction Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 13
- 239000007787 solid Substances 0.000 description 13
- 239000002904 solvent Substances 0.000 description 12
- 238000006477 desulfuration reaction Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 9
- 230000023556 desulfurization Effects 0.000 description 8
- 238000000926 separation method Methods 0.000 description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 description 7
- 229960004424 carbon dioxide Drugs 0.000 description 6
- 238000010792 warming Methods 0.000 description 6
- 239000001569 carbon dioxide Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 235000011089 carbon dioxide Nutrition 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000005261 decarburization Methods 0.000 description 3
- 238000003795 desorption Methods 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000002803 fossil fuel Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 125000004193 piperazinyl group Chemical group 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 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
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000001033 ether group Chemical group 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000011020 pilot scale process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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- 230000033458 reproduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Abstract
The invention relates to a mixed organic solution for trapping CO2 and SO2 acid gas through phase transformation, and belongs to the technical field of environmental protection and gas purification. The mixed organic solution is prepared from, by mass, 5-35 parts of organic amine absorbing agents and 65-95 parts of organic solvent; one of chain amines, diamines, steric hindered amines, alcohol amines and amides or mixtures of more than two of chain amines, diamines, steric hindered amines, alcohol amines and amides which are mixed in any proportion is/are adopted as the organic amine absorbing agents; one of alcohols, ethers, ketones and esters or mixtures of more than two of alcohols, ethers, ketones and esters which are mixed in any proportion is/are adopted as the organic solvent. The mixed organic solution aims at solving the problem that regeneration energy consumption is high in decarbonizing and desulfurizing of an organic amine regeneration method.
Description
Technical field
The present invention relates to one and trap CO by phase transformation
2, SO
2the mixed organic solvents of sour gas, belongs to environmental protection and gas purification technique field.
Background technology
Problem of environmental pollution is the topic that the world today receives much concern.The emission of environmental pollution is caused to mainly contain COx, SO
2, NOx and flue dust, CO wherein
2a large amount of discharges can cause global warming, unusual weather conditions, SO
2a large amount of discharge can cause problem of environmental pollution as serious in acid rain, air pollution (as haze) etc.
CO in air
2, SO
2, except natural phenomena produces, mainly come from burning and the utilization of fossil fuel, the industries such as such as thermal power generation, smelting iron and steel, non-ferrous metal metallurgy, cement.Along with the industrialized development process of society, its control is instant with improvement.Collecting carbonic anhydride is realize CO with sealing (CCS) technology up for safekeeping
2reduce discharging and tackle the effective way of global warming.At present, the Trapping ways of carbon dioxide mainly contains three kinds: trapping, oxygen-enriched combusting and post-combustion capture before burning.Wherein, post-combustion capture CO
2method can be divided into several large classes such as solvent absorption, absorption method, membrane separation process and separation by deep refrigeration.The flue gas of combustion of fossil fuel discharge, temperature is high, large-minded, complicated component, CO
2pressure and content relatively low, use absorption method, separation by deep refrigeration and membrane separation process are all not too economical, the mainly solvent absorption of current relative maturity, conventional chemical solvent is By Amine Solutions, and in pilot-scale and actual industrial, has more ripe application.There is the high problem of regeneration energy consumption in tradition organic amine solvent.
After burning, the desulfur technology of flue gas effectively can solve the pollution of sulfur dioxide, flue gas desulfurization technique (FlueGasDesulfurization after burning, be called for short FGD) be the desulfurization method that current unique large-scale commercial is in the world applied, account for more than 85% of the market share.Wherein comparatively practical desulfur technology has several large classes such as the flue gas desulfurization of calcium method, the ammonia process of desulfurization, double alkali method desulfurizing and amine process desulfurization.Amine process desulfurization development potentiality is comparatively large, but too high sulfur dioxide desorption energy consumption is also the principal element limiting its further genralrlization.
The present invention utilizes phase change solvent can reduce the feature of regeneration energy consumption, based on the research of the decarburization of organic amine method of reproduction, desulfur technology, adopts By Amine Solutions phase transformation to absorb CO
2, SO
2, thus reach the effect reducing desorb energy consumption.
Summary of the invention
For above-mentioned prior art Problems existing and deficiency, the invention provides a kind of mixed organic solvents being trapped CO2, SO2 sour gas by phase transformation.The present invention is intended to solve the problem that in the decarburization of organic amine method of reproduction, desulfurization, regeneration energy consumption is high, and the present invention is achieved through the following technical solutions.
A kind of mixed organic solvents being trapped CO2, SO2 sour gas by phase transformation, this mixed organic solvents is made up of organic amine absorbent and organic solvent, described absorbent and solvent are the higher organic compound of boiling point and absorbent and solvent all can repetitive cycling use, the mass fraction of described organic amine absorbent is 5 ~ 35 parts, and the mass fraction of described organic solvent is 65 ~ 95 parts; Described organic amine absorbent is one or more arbitrary proportion mixtures in chain polyamines class, binary amine, sterically hindered amine, alcamines, amide-type; Described organic solvent is a kind of organic solvent in alcohols, ethers, ketone, ester class or two or more arbitrary proportion mixture.
Described chain polyamines class is diethylenetriamine, triethylene tetramine or TEPA.
Described binary amine is ethylenediamine or piperazine.
Described sterically hindered amine is 2-methyl-2-amino-1-propyl alcohol.
Described alcamines is monoethanolamine, diethanol amine or N, N-dimethylethanolamine.
Described amide-type is acetamide or dimethylacetylamide.
Described alcohols is ethanol, propyl alcohol or n-butanol, and ethers is ether, diethylene glycol dimethyl ether or diethylene glycol monomethyl ether, and ketone is 1-METHYLPYRROLIDONE, and ester class is diethyl carbonate, dimethyl carbonate or propene carbonate.
The decarburization principle that the present invention utilizes is as follows:
The desulfurization principle that the present invention utilizes:
The By Amine Solutions phase transformation system chemistry good stability that the present invention proposes, foaminess is little, and viscosity is little, and abundant raw material source is easily bought.
Mixed organic solvents of the present invention can remove the CO in flue gas efficiently
2, SO
2, and can realize reducing desorb energy consumption, absorbent, solvent reusable edible; The CO removed
2, SO
2there is higher degree, can recycle after being separated.
The invention has the beneficial effects as follows:
1, one of the present invention traps CO by phase transformation
2, SO
2the mixed organic solvents of sour gas undergoes phase transition (liquid liquid phase becomes or liquid-solid-phase changeable) after absorption sour gas, absorbs afterproduct and is better separated, can effectively reduce desorb energy consumption.
2, one of the present invention traps CO by phase transformation
2, SO
2in the mixed organic solvents of sour gas, absorbent and solvent all select high boiling substance, and have not volatile, stable not easily oxidized, low toxin, absorbent, solvent have high selectivity, can determine required system according to different condition, requirement etc.
3, the absorbent absorbing carbon dioxide described in invention or the preferable temperature of sulfur dioxide are 25 ~ 55 DEG C, and the preferable temperature of Desorption of Carbon Dioxide or sulfur dioxide is 75 ~ 115 DEG C.The absorptive capacity of carbon dioxide, sulfur dioxide is high, is minimumly greater than 1.0mol sour gas/mol absorbent.The desorption efficiency of sulfur dioxide, carbon dioxide is high, more than 96%.Solvent in system can recycle for a long time, and absorbent can obtain its solid by after product desorb, can reuse after being dissolved in solvent.
4, CO is trapped by one of the present invention by phase transformation
2, SO
2the mixed organic solvents of sour gas absorbs the SO in flue gas
2after, SO in its discharge gas
2concentration can reach 20mg/m3(and be up to state standards).
Detailed description of the invention
Below in conjunction with detailed description of the invention, the invention will be further described.
Embodiment 1
CO should be trapped by phase transformation
2, SO
2the mixed organic solvents of sour gas, this mixed organic solvents is made up of organic amine absorbent and organic solvent, and described organic amine absorbent is piperazine, and quality is 25kg, and described organic solvent is ethanol, and quality is 75kg.
The mixed organic solvents that the present embodiment prepares is at normal temperatures and pressures through testing de-CO
2efficiency reaches 97%.
Embodiment 2
CO should be trapped by phase transformation
2, SO
2the mixed organic solvents of sour gas, this mixed organic solvents is made up of organic amine absorbent and organic solvent, and described organic amine absorbent is piperazine, and quality is 15kg, and described organic solvent is diethylene glycol monomethyl ether, and quality is 85kg.
The mixed organic solvents that the present embodiment prepares is at normal temperatures and pressures through testing de-SO
2efficiency reaches 95%.
Embodiment 3
CO should be trapped by phase transformation
2, SO
2the mixed organic solvents of sour gas, this mixed organic solvents is made up of organic amine absorbent and organic solvent, and described organic amine absorbent is ethylenediamine, and quality is 30kg, and described organic solvent is diethylene glycol monomethyl ether, and quality is 70kg.
The mixed organic solvents that the present embodiment prepares is at normal temperatures and pressures through testing de-CO
2efficiency reaches 98%.
Embodiment 4
CO should be trapped by phase transformation
2, SO
2the mixed organic solvents of sour gas, this mixed organic solvents is made up of organic amine absorbent and organic solvent, and described organic amine absorbent is ethylenediamine, and quality is 30kg, and described organic solvent is 1-METHYLPYRROLIDONE, and quality is 70kg.
The mixed organic solvents that the present embodiment prepares is at normal temperatures and pressures through testing de-SO
2efficiency reaches 97%.
Embodiment 5
CO should be trapped by phase transformation
2, SO
2the mixed organic solvents of sour gas, this mixed organic solvents is made up of organic amine absorbent and organic solvent, and described organic amine absorbent is ethylenediamine, and quality is 30kg, and described organic solvent is dimethyl carbonate, and quality is 70kg.
The mixed organic solvents that the present embodiment prepares is at normal temperatures and pressures through testing de-CO
2efficiency reaches 99%.
Embodiment 6
CO should be trapped by phase transformation
2, SO
2the mixed organic solvents of sour gas, this mixed organic solvents is made up of organic amine absorbent and organic solvent, and described organic amine absorbent is diethylenetriamine, and quality is 30kg, and described organic solvent is diethyl carbonate, and quality is 70kg.
The mixed organic solvents that the present embodiment prepares is at normal temperatures and pressures through testing de-SO
2efficiency reaches 98%.
Embodiment 7
CO should be trapped by phase transformation
2, SO
2the mixed organic solvents of sour gas, this mixed organic solvents is made up of organic amine absorbent and organic solvent, the ethylenediamine of described organic amine absorbent to be mass ratio be 1:1:1, diethylenetriamine and triethylene tetramine mixture, quality is 30kg, described organic solvent is 1-METHYLPYRROLIDONE, and quality is 70kg.
The mixed organic solvents that the present embodiment prepares is at normal temperatures and pressures through testing de-CO
2efficiency reaches 98%.
Embodiment 8
CO should be trapped by phase transformation
2, SO
2the mixed organic solvents of sour gas, this mixed organic solvents is made up of organic amine absorbent and organic solvent, and described organic amine absorbent is monoethanolamine, and quality is 30kg, and described organic solvent is 1-METHYLPYRROLIDONE, and quality is 70kg.
The mixed organic solvents that the present embodiment prepares is at normal temperatures and pressures through testing de-SO
2efficiency reaches 94%.
Embodiment 9
CO should be trapped by phase transformation
2, SO
2the mixed organic solvents of sour gas, this mixed organic solvents is made up of organic amine absorbent and organic solvent, and described organic amine absorbent is ethylenediamine, and quality is 30kg, and described organic solvent is n-butanol, and quality is 70kg.
The mixed organic solvents that the present embodiment prepares is at normal temperatures and pressures through testing de-CO
2efficiency reaches 94%.
Embodiment 10
CO should be trapped by phase transformation
2, SO
2the mixed organic solvents of sour gas, this mixed organic solvents is made up of organic amine absorbent and organic solvent, and described organic amine absorbent is diethylenetriamine, and quality is 30kg, and described organic solvent is ethanol, and quality is 70kg.
The mixed organic solvents that the present embodiment prepares is at normal temperatures and pressures through testing de-SO
2efficiency reaches 95%.
Embodiment 11
CO should be trapped by phase transformation
2, SO
2the mixed organic solvents of sour gas, this mixed organic solvents is made up of organic amine absorbent and organic solvent, and described organic amine absorbent is 2-methyl-2-amino-1-propyl alcohol, and quality is 30kg, and described organic solvent is diethylene glycol monomethyl ether, and quality is 70kg.
The mixed organic solvents that the present embodiment prepares is at normal temperatures and pressures through testing de-CO
2efficiency reaches 95%.
Embodiment 12
CO should be trapped by phase transformation
2, SO
2the mixed organic solvents of sour gas, this mixed organic solvents is made up of organic amine absorbent and organic solvent, and described organic amine absorbent is ethylenediamine, and quality is 30kg, and described organic solvent is ethanol, and quality is 70kg.
The mixed organic solvents that the present embodiment prepares is at normal temperatures and pressures through testing de-CO
2efficiency reaches 95%.
Embodiment 13
CO should be trapped by phase transformation
2, SO
2the mixed organic solvents of sour gas, this mixed organic solvents is made up of organic amine absorbent and organic solvent, and described organic amine absorbent is triethylene tetramine, and quality is 30kg, and described organic solvent is diethylene glycol dimethyl ether, and quality is 70kg.
The mixed organic solvents that the present embodiment prepares is at normal temperatures and pressures through testing de-CO
2efficiency reaches 95%.
Embodiment 14
CO should be trapped by phase transformation
2, SO
2the mixed organic solvents of sour gas, this mixed organic solvents is made up of organic amine absorbent and organic solvent, and described organic amine absorbent is that triethylene tetramine mixes with diethanol amine, and quality is 30kg, described organic solvent is diethylene glycol dimethyl ether, and quality is 70kg.
The mixed organic solvents that the present embodiment prepares is at normal temperatures and pressures through testing de-CO
2efficiency reaches 98%.
Embodiment 15
CO should be trapped by phase transformation
2, SO
2the mixed organic solvents of sour gas, this mixed organic solvents is made up of organic amine absorbent and organic solvent, and described organic amine absorbent is TEPA, and quality is 30kg, and described organic solvent is dimethyl carbonate, and quality is 70kg.
The mixed organic solvents that the present embodiment prepares is at normal temperatures and pressures through testing de-CO
2efficiency reaches 97%.
Embodiment 16
CO should be trapped by phase transformation
2, SO
2the mixed organic solvents of sour gas, this mixed organic solvents is made up of organic amine absorbent and organic solvent, and described organic amine absorbent is 2-methyl-2-amino-1-propyl alcohol, and quality is 30kg, and described organic solvent is 1-METHYLPYRROLIDONE, and quality is 70kg.
The mixed organic solvents that the present embodiment prepares is at normal temperatures and pressures through testing de-CO
2efficiency reaches 94%.
Embodiment 17
CO should be trapped by phase transformation
2, SO
2the mixed organic solvents of sour gas, this mixed organic solvents is made up of organic amine absorbent and organic solvent, and described organic amine absorbent is acetamide, and quality is 30kg, and described organic solvent is diethyl carbonate, and quality is 70kg.
The mixed organic solvents that the present embodiment prepares is at normal temperatures and pressures through testing de-CO
2efficiency reaches 95%.
Embodiment 18
CO should be trapped by phase transformation
2, SO
2the mixed organic solvents of sour gas, this mixed organic solvents is made up of organic amine absorbent and organic solvent, and described organic amine absorbent is that ethylenediamine mixes with monoethanolamine, and quality is 30kg, and described organic solvent is diethyl carbonate, and quality is 70kg.
Will containing SO
2simulated flue gas be delivered to absorption tower, enter by the bottom of tower; The mixing prepared by described the present embodiment is organic moltenly enters tower through lean pump by tower top; In absorption tower, By Amine Solutions is through spray and the reverse haptoreaction of flue gas; Occur solid in reacted By Amine Solutions, after solid-liquor separation, solid enters and is sent to heater, and solution can continue to recycle, and desulfuration efficiency reaches 92%.Reacted flue gas is discharged by chimney through demister; In heater, solid is heated, and is warming up to 115 DEG C, pressure is realize SO under 0.27MPa condition
2recovery.The SO parsed
2enter gas-liquid separator, enter SO after drying
2storage tank.Remainder is organic amine absorbent liquid, can reuse after being dissolved in diethyl carbonate.
Embodiment 19
CO should be trapped by phase transformation
2, SO
2the mixed organic solvents of sour gas, this mixed organic solvents is made up of organic amine absorbent and organic solvent, and described organic amine absorbent is diethylenetriamine, and quality is 30kg, and described organic solvent is diethylene glycol dimethyl ether, and quality is 70kg.
Will containing CO
2simulated flue gas be delivered to absorption tower, enter by the bottom of tower; The mixing prepared by described the present embodiment is organic moltenly enters tower through lean pump by tower top; In absorption tower, By Amine Solutions is through spray and the reverse haptoreaction of flue gas; Occur solid in reacted By Amine Solutions, after solid-liquor separation, solid enters and is sent to heater, and solution can continue to recycle, de-CO
2efficiency reaches 96%.Reacted flue gas is discharged by chimney through demister; In heater, solid is heated, and is warming up to 114 DEG C, pressure is realize CO under 0.28MPa condition
2recovery.The CO parsed
2enter gas-liquid separator, enter CO after drying
2storage tank.Remainder is organic amine absorbent liquid, can reuse after being dissolved in diethylene glycol dimethyl ether.
Embodiment 20
CO should be trapped by phase transformation
2, SO
2the mixed organic solvents of sour gas, this mixed organic solvents is made up of organic amine absorbent and organic solvent, and described organic amine absorbent is diethanol amine, and quality is 5kg, and described organic solvent is ether, and quality is 95kg.
Will containing CO
2simulated flue gas be delivered to absorption tower, enter by the bottom of tower; The mixing prepared by described the present embodiment is organic moltenly enters tower through lean pump by tower top; In absorption tower, By Amine Solutions is through spray and the reverse haptoreaction of flue gas; Occur solid in reacted By Amine Solutions, after solid-liquor separation, solid enters and is sent to heater, and solution can continue to recycle, de-CO
2efficiency reaches 96%.Reacted flue gas is discharged by chimney through demister; In heater, solid is heated, and is warming up to 114 DEG C, pressure is realize CO under 0.28MPa condition
2recovery.The CO parsed
2enter gas-liquid separator, enter CO after drying
2storage tank.Remainder is organic amine absorbent liquid, can reuse after being dissolved in diethylene glycol dimethyl ether.
Embodiment 21
CO should be trapped by phase transformation
2, SO
2the mixed organic solvents of sour gas, this mixed organic solvents is made up of organic amine absorbent and organic solvent, and described organic amine absorbent is diethanol amine, and quality is 35kg, ether and the diethylene glycol dimethyl ether mixture of described organic solvent to be mass ratio be 1:1, quality is 65kg.
Will containing CO
2simulated flue gas be delivered to absorption tower, enter by the bottom of tower; The mixing prepared by described the present embodiment is organic moltenly enters tower through lean pump by tower top; In absorption tower, By Amine Solutions is through spray and the reverse haptoreaction of flue gas; Occur solid in reacted By Amine Solutions, after solid-liquor separation, solid enters and is sent to heater, and solution can continue to recycle, de-CO
2efficiency reaches 97%.Reacted flue gas is discharged by chimney through demister; In heater, solid is heated, and is warming up to 114 DEG C, pressure is realize CO under 0.28MPa condition
2recovery.The CO parsed
2enter gas-liquid separator, enter CO after drying
2storage tank.Remainder is organic amine absorbent liquid, can reuse after being dissolved in the ether and diethylene glycol dimethyl ether mixture that mass ratio is 1:1.
Above the specific embodiment of the present invention is explained in detail, but the present invention is not limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, various change can also be made under the prerequisite not departing from present inventive concept.
Claims (7)
1. one kind traps CO by phase transformation
2, SO
2the mixed organic solvents of sour gas, is characterized in that: this mixed organic solvents is made up of organic amine absorbent and organic solvent, and the mass fraction of described organic amine absorbent is 5 ~ 35 parts, and the mass fraction of described organic solvent is 65 ~ 95 parts; Described organic amine absorbent is one or more arbitrary proportion mixtures in chain polyamines class, binary amine, sterically hindered amine, alcamines, amide-type; Described organic solvent is a kind of organic solvent in alcohols, ethers, ketone, ester class or two or more arbitrary proportion mixture.
2. according to claim 1ly trap CO by phase transformation
2, SO
2the mixed organic solvents of sour gas, is characterized in that: described chain polyamines class is diethylenetriamine, triethylene tetramine or TEPA.
3. according to claim 1ly trap CO by phase transformation
2, SO
2the mixed organic solvents of sour gas, is characterized in that: described binary amine is ethylenediamine or piperazine.
4. according to claim 1ly trap CO by phase transformation
2, SO
2the mixed organic solvents of sour gas, is characterized in that: described sterically hindered amine is 2-methyl-2-amino-1-propyl alcohol.
5. according to claim 1ly trap CO by phase transformation
2, SO
2the mixed organic solvents of sour gas, is characterized in that: described alcamines is monoethanolamine, diethanol amine or N, N-dimethylethanolamine.
6. according to claim 1ly trap CO by phase transformation
2, SO
2the mixed organic solvents of sour gas, is characterized in that: described amide-type is acetamide or dimethylacetylamide.
7. according to claim 1ly trap CO by phase transformation
2, SO
2the mixed organic solvents of sour gas, it is characterized in that: described alcohols is ethanol, propyl alcohol or n-butanol, ethers is ether, diethylene glycol dimethyl ether or diethylene glycol monomethyl ether, and ketone is 1-METHYLPYRROLIDONE, and ester class is diethyl carbonate, dimethyl carbonate or propene carbonate.
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