CN107744722A - Collecting carbonic anhydride and recycling system and method based on Driven by Solar Energy - Google Patents
Collecting carbonic anhydride and recycling system and method based on Driven by Solar Energy Download PDFInfo
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- CN107744722A CN107744722A CN201711126888.3A CN201711126888A CN107744722A CN 107744722 A CN107744722 A CN 107744722A CN 201711126888 A CN201711126888 A CN 201711126888A CN 107744722 A CN107744722 A CN 107744722A
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- absorption
- gas
- desorption
- carbon dioxide
- liquid
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 223
- 229960004424 carbon dioxide Drugs 0.000 title claims abstract description 124
- 238000000034 method Methods 0.000 title claims abstract description 33
- 235000011089 carbon dioxide Nutrition 0.000 title claims abstract description 19
- 238000004064 recycling Methods 0.000 title claims abstract description 19
- 238000003795 desorption Methods 0.000 claims abstract description 196
- 238000010521 absorption reaction Methods 0.000 claims abstract description 186
- 239000007789 gas Substances 0.000 claims abstract description 145
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 106
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 99
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 99
- 239000002250 absorbent Substances 0.000 claims abstract description 67
- 230000002745 absorbent Effects 0.000 claims abstract description 67
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 230000001699 photocatalysis Effects 0.000 claims abstract description 25
- 238000007146 photocatalysis Methods 0.000 claims abstract description 24
- 238000012856 packing Methods 0.000 claims abstract description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000001301 oxygen Substances 0.000 claims abstract description 19
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 19
- 239000003054 catalyst Substances 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 230000000694 effects Effects 0.000 claims abstract description 8
- 238000012546 transfer Methods 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 130
- 210000004027 cell Anatomy 0.000 claims description 79
- 230000000740 bleeding effect Effects 0.000 claims description 56
- 238000000926 separation method Methods 0.000 claims description 34
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 25
- 239000000243 solution Substances 0.000 claims description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 16
- 230000008929 regeneration Effects 0.000 claims description 15
- 238000011069 regeneration method Methods 0.000 claims description 15
- 239000007864 aqueous solution Substances 0.000 claims description 13
- 229910052799 carbon Inorganic materials 0.000 claims description 13
- 230000008676 import Effects 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 12
- 238000011084 recovery Methods 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 239000011324 bead Substances 0.000 claims description 6
- 229910002090 carbon oxide Inorganic materials 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 claims description 5
- 229910052776 Thorium Inorganic materials 0.000 claims description 4
- 238000006555 catalytic reaction Methods 0.000 claims description 4
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 4
- 150000002500 ions Chemical class 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 210000002421 cell wall Anatomy 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- PVXVWWANJIWJOO-UHFFFAOYSA-N 1-(1,3-benzodioxol-5-yl)-N-ethylpropan-2-amine Chemical compound CCNC(C)CC1=CC=C2OCOC2=C1 PVXVWWANJIWJOO-UHFFFAOYSA-N 0.000 claims description 2
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 claims description 2
- QMMZSJPSPRTHGB-UHFFFAOYSA-N MDEA Natural products CC(C)CCCCC=CCC=CC(O)=O QMMZSJPSPRTHGB-UHFFFAOYSA-N 0.000 claims description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 238000007598 dipping method Methods 0.000 claims description 2
- 238000005470 impregnation Methods 0.000 claims description 2
- CRVGTESFCCXCTH-UHFFFAOYSA-N methyl diethanolamine Chemical compound OCCN(C)CCO CRVGTESFCCXCTH-UHFFFAOYSA-N 0.000 claims description 2
- ZCUFMDLYAMJYST-UHFFFAOYSA-N thorium dioxide Chemical compound O=[Th]=O ZCUFMDLYAMJYST-UHFFFAOYSA-N 0.000 claims description 2
- 229910003452 thorium oxide Inorganic materials 0.000 claims description 2
- VGBPIHVLVSGJGR-UHFFFAOYSA-N thorium(4+);tetranitrate Chemical compound [Th+4].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VGBPIHVLVSGJGR-UHFFFAOYSA-N 0.000 claims description 2
- WEQHQGJDZLDFID-UHFFFAOYSA-J thorium(iv) chloride Chemical compound Cl[Th](Cl)(Cl)Cl WEQHQGJDZLDFID-UHFFFAOYSA-J 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 claims 1
- WXYNCCWBUXKSBG-UHFFFAOYSA-N copper;nitric acid Chemical compound [Cu].O[N+]([O-])=O WXYNCCWBUXKSBG-UHFFFAOYSA-N 0.000 claims 1
- 239000004408 titanium dioxide Substances 0.000 description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- 241000790917 Dioxys <bee> Species 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 238000006057 reforming reaction Methods 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- -1 carbonic acid Hydrogen salt Chemical class 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- 229940043237 diethanolamine Drugs 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/62—Carbon oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/73—After-treatment of removed components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
- B01D53/82—Solid phase processes with stationary reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/96—Regeneration, reactivation or recycling of reactants
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/15—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively
- C07C29/159—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively with reducing agents other than hydrogen or hydrogen-containing gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/80—Organic bases or salts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention discloses a kind of collecting carbonic anhydride based on Driven by Solar Energy and recycling system and method, can effectively trap carbon dioxide, and using photocatalysis by the carbon dioxide conversion of capture into methanol；The system includes：Absorption and desorption tower, water vapor generation device and photo catalysis reactor；Absorption and desorption tower, there is absorbent packing layer for collecting carbonic anhydride and desorption, in it, is flowed using Driven by Solar Energy air in tower during absorption, comes out carbon dioxide using vapor during desorption, the mixed gas after desorption transfers to photo catalysis reactor；Water vapor generation device is used to produce vapor using solar energy；Photo catalysis reactor is used for carbon dioxide and reaction for preparing methanol occurs for water, and oxygen and methanol are produced under the collective effect of sunshine and catalyst；The present invention traps carbon dioxide, regenerable absorbent solution and desorption carbon dioxide at normal temperatures and pressures, using luminous energy, and photocatalysis carbon dioxide conversion is methanol.
Description
Technical field
The present invention relates to collecting carbonic anhydride and reutilization technology field, and in particular to a kind of catching based on Driven by Solar Energy
Carbon dioxide and the system and method that methanol is prepared using carbon dioxide in collection air.
Background technology
With the rapid development of economy, carbon dioxide largely discharges the environmental problem getting worse brought, therefore titanium dioxide
The trapping and recovery research of carbon are by extensive concern both domestic and external.However, the trapping of carbon dioxide is mainly solid in face of thermal power plant etc.
Determine emission source, its method is to utilize alkaline solution (such as ammonia spirit NH3·H2O, monoethanolamine MEA, sodium acid carbonate NaHCO3) right
Flue gas is washed, and removes the carbon dioxide in flue gas.Although this method absorption rate is fast, removal effect is good, produced after absorbing
Thing is relatively stable, regeneration energy consumption is high, therefore is difficult to handle, easily causes secondary pollution.Also, existing collecting carbonic anhydride and recovery
Technology mainly pays attention to the trapping of carbon dioxide, and is related to for carbon dioxide recovery after trapping or storage less.It is existing right
The processing method of carbon dioxide after trapping is mainly geological storage and landfill, but not only technical difficulty is big, cost for this method
Height, and when running into earth's crust strenuous exercise, the risk leaked on a large scale be present.
The content of the invention
In order to solve above-mentioned the deficiencies in the prior art, the present invention proposes a kind of carbon dioxide based on Driven by Solar Energy and caught
Collection and recycling system and method, the system are trapped using easy absorbent regeneration to carbon dioxide in air, are utilized
The flowing of Driven by Solar Energy gas absorbs carbon dioxide in air, recycles solar energy to provide desorption thermal source and stripping gas at ambient pressure
Carbon dioxide is realized, is finally methanol by the carbon dioxide conversion after desorption using sunshine and catalyst；Therefore, this hair
Bright purpose is to reduce the energy consumption of carbon dioxide absorption desorption technique, realizes the zero-emission of carbon dioxide and profit again after desorbing
With.
To achieve the above object, the technical scheme is that：
A kind of collecting carbonic anhydride based on Driven by Solar Energy and recycling system, including the first absorption and desorption tower 3,
Second absorption and desorption tower 25, steam generator 22 and photo catalysis reactor 29；
The first absorption and desorption tower 3 is intermittent reactor, can be switched between absorption and desorption both of which；
There is supported solid absorbent packing layer in it, outer surface is wrapped covered with light absorbent 2 and zone of heating 4, the first absorption and desorption tower 3
Include the first air inlet 6, the first vapor import 5 and the first liquid outlet 7 for being located at the bottom of the first absorption and desorption tower 3 and be arranged on
First gas outlet 1 at the top of the first absorption and desorption tower 3；The zone of heating 4, its surface scribble light absorbent, there is heating electricity in it
Resistance, assigned temperature is arrived using solar energy or the auxiliary hot heating absorbent packing layer of electricity, be 30-50 DEG C during absorption, be 80 DEG C during desorption-
100℃；In the first absorption and desorption tower 3, because absorbent is fixed in packed bed, absorption of the absorbent to carbon dioxide is conciliate
Suction is intermittence, i.e. absorbent elder generation absorbing carbon dioxide, is desorbed after absorption reaches saturation, is carried out again after the completion of desorption
Absorb, so circulation；During absorption, light absorbent 2 absorbs sunshine, makes to produce upper and lower temperature difference, driving in the first absorption and desorption tower 3
Air flows from bottom to top, and gas enters the bottom of absorption and desorption tower 3 by the first air inlet 6, flows through supported solid absorbent
Packing layer, after the carbon dioxide in gas is absorbed by absorbent, the first gas-liquid separator 11 is discharged into through the first gas outlet 1；
During desorption, vapor caused by water vapor generation device 22 enters the first absorption and desorption tower 3 via the first vapor import 5, adds
Vapor packing layer is pyrolyzed, and the carbon dioxide that absorbent is desorbed carries out the first absorption and desorption tower 3, through the row of the first gas outlet 1
Go out to enter the first gas-liquid separator 11；
The second absorption and desorption tower 25, concrete structure and operation principle are consistent with the first absorption and desorption tower 3, including second
Air inlet 27, the second vapor import 26, the second gas outlet 24 and the second liquid outlet 28；
The water vapor generation device 22, upper end are provided with the first sunlight collector 21, utilize sunshine and the auxiliary heat of electricity
High-temperature vapor is produced, is passed through in desorption in the first absorption and desorption tower 3 and the second absorption and desorption tower 25, as promotion titanium dioxide
The desorption gas stripping gas of carbon desorption；
The photo catalysis reactor 29 includes insulation shell, electric heater 34 and reative cell 32 successively from outside to inside；Second
Sunlight collector 30 is placed in the upper end of reative cell 32, for converging sunshine；The electric heater 34 has adding thermal resistance circle
And temperature control device, the adding thermal resistance circle of electric heater 34 are arranged between insulation shell and reative cell 32, the temperature of electric heater 34
The temperature sensor of control device is placed on liquid internal in reative cell 32, and 40-100 DEG C of temperature is provided for reative cell；It is described anti-
It is normal pressure light transmission container to answer room 32, enable the sunshine after convergence through reative cell wall be irradiated in reative cell catalyst and
The aqueous solution；Reative cell 32 is provided with agitating device, the 3rd air inlet 31, the 3rd gas outlet 40, charging aperture 38, discharge gate 35 and liquid
Concentration sensor 37；The carbon dioxide and water vapor mixture body desorbed enters reative cell 32 by the 3rd air inlet 31；Two
Carbonoxide reacts with water under the collective effect of catalyst and sunshine, and methanol and oxygen is made；Oxygen and do not absorbed
Vapor be directly discharged into air behind the 3rd gas outlet 40 and the 3rd gas-liquid separator 41 or send reative cell 32 back to；Reative cell 32
The first liquid valve 39 and second liquid valve 36 are respectively equipped with charging aperture 38 and discharge gate.
A kind of described collecting carbonic anhydride based on Driven by Solar Energy and recycling system, in addition to：
First gas-liquid separator 11, it is arranged at the first gas outlet 1 of the first absorption and desorption tower 3, bottom and the first liquid
Retracting device 12 is connected, and upper end is connected with first row air valve 8 and second row air valve 10, and the first gas-liquid separator 11 is used for dioxy
Change and vapor drop separation is carried in the mixed gas of carbon and vapor come out, the liquid after separation is sent into the by connecting pipe
One liquid withdrawal system 12, the gas after separation are discharged through first row air valve 8 or second row air valve 10；First row air valve 8 with it is anti-
The 3rd air inlet 31 of room 32 is answered to connect；Second row air valve 10 communicates with air, and outlet is provided with the first gas concentration lwevel and sensed
Device 9；When the first absorption and desorption tower 3 is in absorption process, first row air valve 8 is closed, and second row air valve 10 is opened, after separation
Gas is discharged into air through second row air valve 10；When in desorption process, first row air valve 8 is opened, and second row air valve 10 is closed,
Gas after separation is sent into photo catalysis reactor 29 through first row air valve 8；
Second gas-liquid separator 18, concrete structure and operation principle are consistent with the first gas-liquid separator 11, are arranged on second
At second gas outlet 24 of absorption and desorption tower 25, bottom is connected with the first liquid withdrawal system 12, upper end and the 3rd air bleeding valve 15
Connected with the 4th air bleeding valve 17, the 3rd air bleeding valve 15 is connected with the 3rd air inlet 31 of reative cell 32；4th air bleeding valve 17 with it is big
Gas phase is led to, and exit is provided with the second gas concentration lwevel sensor 16；When the second absorption and desorption tower 25 is in absorption process,
3rd air bleeding valve 15 is closed, and the 4th air bleeding valve 17 is opened, and the gas after separation is discharged into air through the 4th air bleeding valve 17；When in solution
When being drawn through journey, the 3rd air bleeding valve 15 is opened, and the 4th air bleeding valve 17 is closed, and the gas after separation is sent into light through the 3rd air bleeding valve 15 and urged
Change reactor 29；
3rd gas-liquid separator 41, it is arranged at the 3rd gas outlet 40 of reative cell 32, bottom and the charging of reative cell 32
Mouth 38 is connected, and upper end is connected with the 5th air bleeding valve 43 and the 6th air bleeding valve 44, and the 3rd gas-liquid separator 41 is used to reative cell
Water vapor condensation in gas is simultaneously and oxygen separation, the liquid after separation send reative cell 32 back to through first charging aperture 38, separates
Gas afterwards is discharged after the 3rd gas concentration lwevel sensor 42 through the 5th air bleeding valve 43 or the 6th air bleeding valve 44；5th exhaust
Valve 43 is connected with the 3rd air inlet 31 of reative cell 32；6th air bleeding valve 44 is connected with air, and exit is provided with the 3rd dioxy
Change concentration of carbon sensor 42；
First gas concentration lwevel sensor 9, the second gas concentration lwevel sensor 16 and the 3rd gas concentration lwevel pass
Sensor 42 is respectively used to detect the gas of the first gas-liquid separator 11, the second gas-liquid separator 18 and the separation of the 3rd gas-liquid separator 41
Gas concentration lwevel in body；
Strength of fluid sensor 37, in the liquid of reative cell 32, for sensing the dense of methanol in the liquid of reative cell 32
Degree, when methanol concentration is higher than setting (5%-10%), solution is discharged methanol by the second liquid valve 36 for opening discharge gate 35
Storage device 45, turn off second liquid valve 36 and open the first liquid valve 39 of charging aperture 38, regulation is added into reative cell
The aqueous solution of volume；
First liquid withdrawal system 12, it is connected with the lower end of the first gas-liquid separator 11 and the second gas-liquid separator 18,
The condensed vapor gone out for reclaiming and storing gas-liquid separator separates, the liquid after recovery are sent into water vapor generation device
22 re-use.
A kind of described collecting carbonic anhydride based on Driven by Solar Energy and recycling system, in addition to：Second liquid
Body retracting device 23, it is connected with the first liquid outlet 7 and the second liquid outlet 28, is inhaled for storing the first absorption and desorption tower 3 and second
The vapor condensed when being desorbed in desorber 25 is received, the liquid after recovery is sent into water vapor generation device 22 and re-used.
Two links of absorption and desorption of the first absorption and desorption tower 3 and the second absorption and desorption tower 25 to carbon dioxide are
What intermittence was carried out, but work as the first absorption and desorption tower 3 and absorbed, when the second absorption and desorption tower 25 is desorbed；Or when first
Absorption and desorption tower 4 is desorbed, and when the second absorption and desorption tower 25 carries out absorption and desorption, can ensure that the absorption of carbon dioxide is conciliate
Carried out while inhaling two links.
Collecting carbonic anhydride described above based on Driven by Solar Energy and recycling method, comprise the following steps：
(1) in the first absorption and desorption tower 3, the absorption process of carbon dioxide is carried out, light absorbent 2 is using solar energy the
Temperature difference up and down caused by the inside of one absorption and desorption tower 3, the bottom-up flowing of air in driving tower, air absorb solution from first
Inhale the first air inlet of bottom 6 of tower 3 to be sent into, air and the contact of absorbent packing layer carry out absorption mass transfer.Absorbed carbon dioxide
Gas afterwards is directly discharged into air after the first gas-liquid separator 11；
(2) in the second absorption and desorption tower 25, the desorption process of carbon dioxide is carried out, zone of heating utilizes solar energy by second
Absorption and desorption tower 25 is heated to assigned temperature, and water vapor generation device 22 utilizes vapor caused by solar energy from the second vapor
Import 26 enters the second absorption and desorption tower 25；Vapor contacts with absorbing the absorbent packing layer after carbon dioxide, from absorption
The carbon dioxide desorbed in agent is carried from the upper end of the second absorption and desorption tower 25 by vapor and discharged.When in the first absorption and desorption tower 3
Absorbent absorbing carbon dioxide (the first gas concentration lwevel sensor 9 detects titanium dioxide in exit gas when reaching saturation
When the concentration of carbon is higher than setting), the absorption and desorption pattern switching of two absorption and desorption towers, the first absorption and desorption tower 3 is carried out
Desorption process, the second absorption and desorption tower 25 carry out absorption link；When the absorbent in the second absorption and desorption tower 25 absorbs titanium dioxide
(the second gas concentration lwevel sensor 16 detects that the concentration of carbon dioxide in exit gas is higher than setting when carbon reaches saturation
When), the absorption and desorption pattern of two absorption and desorption towers switches again, so circulation；
(3) carbon dioxide and vapor mixed gas come out from the first absorption and desorption tower 3 and the second absorption and desorption tower 25
3rd air inlet 31 of reacted room 32 enters photo catalysis reactor 29；The temperature control device control adding thermal resistance circle of electric heater 34
Reative cell 32 is heated；In reative cell 32, carbon dioxide and water occur two in the presence of sunshine and catalyst 33
The reaction for preparing methanol of carbonoxide and water, produce methanol and oxygen；The oxygen and part vapor of generation, from the row of the 3rd gas outlet 40
Go out, through the 3rd gas-liquid separator 41, be discharged into air or send reative cell 32 back to and continue to react；
(4) when strength of fluid sensor 37 detects that the methanol concentration of liquid in reative cell 32 is higher than setting, by liquid
Body transfers to methanol storage device 45, and to the liquid make-up of reative cell 32.
Absorbent is the N- first easily regenerated in the first absorption and desorption tower 3 and the second absorption and desorption tower 25 in step (1) and (2)
The activated carbon or solid particle bead of base diethanol amine (MDEA) solution or functional ion solution dipping, specific support materials,
Solution formula and concentration are determined according to carbon dioxide in gas concentration.
In step (3), catalyst is Cu/TiO in the reative cell 322Or Th/TiO2, utilize copper sulphate, copper nitrate, chlorine
Change copper or copper sulphate and thorium oxide, thorium silicate, thorium nitrate or thorium tetrachloride solution oxide impregnation titanium bead, by Cu or Th ions
It is supported on TiO2Respective load catalyst is prepared on bead.
The aqueous solution in the reative cell, main component are water, and suitably the aqueous solution is adjusted using sodium acid carbonate or acid solution
Acid-base value.
The first absorption and desorption tower 3 and the second absorption and desorption tower 25 are flowed using Driven by Solar Energy air in tower, and
Heat energy is provided for absorbent desorption and regeneration and stripping gas carries gas i.e. vapor, and the photo catalysis reactor 29 uses solar energy as light
Catalytic reaction process provides thermal source.
Compared to the prior art, the present invention has advantages below：
(1) trapping system is simple, addressing require low, absorbent strong adaptability, can at an arbitrary position setting system to big
Carbon dioxide is captured in gas so that whole system has a wide range of application.
(2) using easy desorption and regeneration and the low supported solid absorbent of volatility, absorbent can be realized in systems
Desorption and regeneration and repeated recycling utilize, avoid absorption product from causing secondary pollution, can effectively relatively low cost of material.
(3) using gas flowing in Driven by Solar Energy absorption tower, while heat energy also is provided for absorbent desorption and regeneration, had
Without providing energy for system in the case of solar energy, therefore the energy consumption of whole system is extremely low.
(4) by the carbon dioxide conversion after desorption it is the methanol that has enormous industrial application value, effectively avoids geological reservoir
Risk existing for carbon dioxide, realize recycling and the zero-emission of carbon dioxide.
Brief description of the drawings
Fig. 1 is a kind of collecting carbonic anhydride based on Driven by Solar Energy of the invention and the embodiment knot of recycling system
Structure schematic diagram.
1-the first gas outlet, 2-light absorbent, the 3-the first absorption and desorption tower, 4-zone of heating, the 5-the first vapor enter
Mouthful, the 6-the first air inlet, the 7-the first liquid outlet, 8-first row air valve, the 9-the first gas concentration lwevel sensor, 10-the
Two air bleeding valves, the 11-the first gas-liquid separator, the 12-the first liquid withdrawal system, the 13-the first intake valve, the 14-the second air inlet
Valve, the 15-the three air bleeding valve, the 16-the second gas concentration lwevel sensor, the 17-the four air bleeding valve, the 18-the second gas-liquid separation
Device, the 19-the three intake valve, the 20-the four intake valve, the 21-the first sunlight collector, 22-water vapor generation device, 23-
Second liquid retracting device, the 24-the second gas outlet, the 25-the second absorption and desorption tower, the 26-the second vapor import, 27-the
Two air inlets, the 28-the second liquid outlet, 29-photo catalysis reactor, the 30-the second sunlight collector, the 31-the three air inlet,
32-reative cell, 33-catalyst, 34-electric heater, 35-discharge gate, 36-second liquid valve, 37-strength of fluid sensing
Device, 38-charging aperture, the 39-the first liquid valve, the 40-the three gas outlet, the 41-the three gas-liquid separator, the 42-the three titanium dioxide
Concentration of carbon sensor, the 43-the five air bleeding valve, the 44-the six air bleeding valve, 45-methanol storage device.
Embodiment
Absorption and desorption and Photocatalytic Regeneration principle first to this reaction illustrate：
Carbon dioxide and the supported solid absorbent that easily regenerates are (with N methyldiethanol amine load type active carbon in the present invention
Exemplified by particle) occur absorption and desorption chemical reaction be：
Above-mentioned reaction is reversible reaction, and at a temperature of 40 DEG C or so, absorbent absorbs the dioxide component in gas,
Generate non-stable bicarbonate；Under 80 DEG C -100 DEG C of heating and vapor stripping conditions, react and carried out along reverse, carbonic acid
Hydrogen salt is decomposed into carbon dioxide, and carbon dioxide generates the mixed gas of vapor and carbon dioxide from mass transfer in liquid phase to gas phase.
The chemical reaction that photocatalysis carbon dioxide prepares methanol in the present invention is：
Under the collective effect of catalyst and sunshine under normal temperature and pressure conditionses reforming reaction can occur for carbon dioxide, raw
Into methanol and oxygen, wherein the fuel that the methanol generated can be after industry purifies as high-efficiency cleaning, the oxygen of generation can be direct
It is discharged into air or recovery supplies commercial Application.
For the technical scheme of further open invention, the structural principle to the present invention and operation principle are made below in conjunction with the accompanying drawings
It is further described.
Embodiment
As shown in figure 1, a kind of included based on the collecting carbonic anhydride of Driven by Solar Energy and recycling system：First inhales
The absorption and desorption tower 25 of desorber 3 and second is received, it makes its interior support type using the bottom-up flowing of gas in Driven by Solar Energy tower
Solid absorbent carries out intermittent absorption and desorption to carbon dioxide；Water vapor generation device 22, it produces solution using solar energy
Inhale gas stripping gas-vapor；Photo catalysis reactor 29, it is interior in sunshine and the collective effect carbon dioxide and water of catalyst
React restructuring generation methanol.
First absorption and desorption tower 3, there is supported solid adsorbent packing layer in it, including：Light absorbent 2, the first air inlet
Mouth 6, the first gas outlet 1, the first vapor import 5, the first liquid outlet 7 and zone of heating 4.Zone of heating 4, its surface scribble extinction material
Material, there is adding thermal resistance in it, be 40 DEG C of left sides during absorption using solar energy or the auxiliary hot heating absorbent packing layer of electricity to assigned temperature
The right side, it is 80 DEG C -100 DEG C during desorption.Because absorbent is fixed in packing layer in the first absorption and desorption tower 3, therefore absorbent pair
The absorption and desorption of carbon dioxide are intermittences, that is to say, that absorbent elder generation absorbing carbon dioxide, after absorption reaches saturation
Desorbed, absorbed again after the completion of desorption, so circulation.During absorption, upper end light absorbent 2 absorbs sunshine, absorption tower
Interior generation upper and lower temperature difference, driving air flow from bottom to top, and gas enters the bottom of the first absorption and desorption tower 3 by the first air inlet 6
Portion, flows through supported solid absorbent packing layer, after the carbon dioxide in gas is absorbed by absorbent, through the row of the first gas outlet 1
Go out to enter the first gas-liquid separator 11.During desorption, vapor caused by water vapor generation device 22 is via the first vapor import 5
Into the first absorption and desorption tower 3, the carbon dioxide of absorbent desorption carries out the first absorption and desorption tower 3 by vapor, through first
Gas outlet 1 is discharged into the first gas-liquid separator 11.The vapor condensed in first absorption and desorption tower 3 flows through the first liquid outlet 7
Enter second liquid retracting device 23.
First gas-liquid separator 11, for separating the water droplet in the gas of the first gas outlet 1, the gas after separation is through first row
Air valve 8 or second row air valve 10 are discharged, and the liquid after separation enters the first liquid withdrawal system 12.
Second absorption and desorption tower 25, concrete structure and operation principle are consistent with the first absorption and desorption tower 3, including：Second enters
Gas port 27, the second vapor import 26, the second gas outlet 24 and the second liquid outlet 28.
Second gas-liquid separator 18, concrete structure and operation principle are consistent with the first gas-liquid separator 11, are arranged on second
At gas outlet 24, bottom is connected with the first liquid withdrawal system 12, and upper end is connected with the 3rd air bleeding valve 15 and the 4th air bleeding valve 17.
First liquid withdrawal system 12 and second liquid retracting device 23, for reclaiming and storing gas-liquid separator separates
The water vapour condensed in water vapour or absorption and desorption tower, the liquid after recovery can be sent into water vapor generation device 22 and carry out profit again
With.
First row air valve 8 (the 3rd air bleeding valve 15) and second row air valve 10 (the 4th air bleeding valve 17) are used to control going for gas
To the flow direction of gas when being also used for switching absorption and desorption.First row air valve 8 (the 3rd air bleeding valve 15) and photo catalysis reactor 29
The 3rd air inlet 31 be connected, second row air valve 10 (the 4th air bleeding valve 17) is connected with air, and there is the first titanium dioxide in its exit
Concentration of carbon sensor 9 (the second gas concentration lwevel sensor 16), go out for detecting second row air valve 10 (the 4th air bleeding valve 17)
The concentration of carbon dioxide in gas.
Photo catalysis reactor 29 includes insulation shell, electric heater 34 and reative cell 32 successively from outside to inside.Second sun
Light concentrator 30, the upper end of reative cell 32 is placed in, for converging sunshine.Electric heater 34, there is adding thermal resistance circle and temperature control
Device, adding thermal resistance circle are arranged between insulation shell and reative cell 32, and the temperature sensor of temperature control device is placed on reative cell
Liquid internal in 32, can be that reative cell 32 provides 40-100 DEG C of temperature.
Reative cell 32, it is normal pressure light transmission container, the sunshine after convergence is irradiated to reaction through reative cell wall
Catalyst 33 and the aqueous solution in room 32.Reative cell 32 is provided with agitating device, the 3rd air inlet 31, the 3rd gas outlet 40, charging aperture
38th, discharge gate 35, strength of fluid sensor 37.The carbon dioxide and water vapor mixture body desorbed passes through the 3rd air inlet 31
Into reative cell 32.Carbon dioxide reacts with water under the collective effect of catalyst 33 and sunshine, and methanol and oxygen is made
Gas.Oxygen and unabsorbed vapor are directly discharged into air behind the 3rd gas outlet 40 and the 3rd gas-liquid separator 41 or sent back to
Reative cell 32.There are the first liquid valve 39 and second liquid valve 36 on the charging aperture 38 of reative cell 32 and discharge gate respectively.Reative cell 32
Strength of fluid sensor 37 is placed in interior liquid, for sensing the methanol concentration of liquid in reative cell 32.
3rd gas-liquid separator 41, it is arranged at the 3rd gas outlet 31 of reative cell 32, for reative cell 32 the 3rd to be gone out
Water vapor condensation in the gas of gas port 40 is simultaneously and oxygen separation, the liquid after separation send reative cell 32 back to through first charging aperture 38,
Gas after separation can be discharged after the 3rd gas concentration lwevel sensor 42 through the 5th air bleeding valve 43 or the 6th air bleeding valve 44.The
Five air bleeding valves 43 are connected with the 3rd air inlet 31 of reative cell 32, and the 6th air bleeding valve 44 is connected with air.3rd dense carbon dioxide
Spend the carbon dioxide in gas concentration that sensor 42 is used to detect the separation of the 3rd gas-liquid separator 41 respectively.
Although absorption and desorption of the absorption and desorption tower to carbon dioxide are intermittent, when two absorption and desorption towers
Absorption and desorption while carbon dioxide can be ensured when being operated together.The step of specific collecting carbonic anhydride and recycling
It is described as follows：
First, the first absorption and desorption tower 3 is in the absorption stage, and the second absorption and desorption tower 25 is in the desorption and regeneration stage.The
One intake valve 13 is opened, and the second intake valve 14 is closed, and light absorbent 2 absorbs sunshine, is produced in the first absorption and desorption tower 3
The lower temperature difference, air flow is driven, air is sent into the bottom of the first absorption and desorption tower 3 through the first air inlet 6, and air flows through the first absorption
Absorbent packed tower in desorber 3.After carbon dioxide in air is absorbed by absorbent, enter first through the first gas outlet 1
Gas-liquid separator 11.Now, first row air valve 8 is closed, and second row air valve 10 is opened, the gas after the separation of the first gas-liquid separator 11
Body is directly discharged into air, and the concentration of carbon dioxide in gas is detected by the first gas concentration lwevel sensor 9.At the same time,
Absorbent packing layer is heated to specify desorption temperature by the zone of heating 4 of the second absorption and desorption tower 25, and the 3rd intake valve 19 is closed, the
Four intake valves 20 are opened, and vapor caused by water vapor generation device 22 enters the second absorption and desorption through the second vapor import 26
The bottom of tower 25, vapor flow through the absorbent packing layer in the second absorption and desorption tower 25, and absorbent occurs regeneration and desorbs dioxy
Change carbon, the carbon dioxide after desorption carries out the second absorption and desorption tower 25 by vapor and enters the second gas-liquid through the second gas outlet 24
Separator 18.Now, the 3rd air bleeding valve 15 is opened, and the 4th air bleeding valve 17 is closed, and the gas after separation is through the row of the 3rd air bleeding valve 15
Go out, photo catalysis reactor 29 is directly entered by the 3rd air inlet 31.
When the first gas concentration lwevel sensor 9 detects that the concentration of carbon dioxide in exit gas is higher than setting
(when inlet gas is air, select 0.1%), it is believed that absorbent reaches saturation in the first absorption and desorption tower 3, now switches first
The absorption and desorption state of the absorption and desorption tower 25 of absorption and desorption tower 3 and second, i.e. the first absorption and desorption tower 3 are changed into desorption and regeneration rank
Section, the second absorption and desorption tower 25 are changed into the absorption stage.First intake valve 13 is closed, and the second intake valve 14 is opened, and light absorbent 2 is inhaled
Sunshine is received, upper and lower temperature difference is produced in the second absorption and desorption tower 25, drives the bottom-up flowing of air, air is through the second air inlet
27 enter the second absorption and desorption tower 25；3rd intake valve 19 is opened, and the 4th intake valve 20 is closed, and water vapor generation device 22 produces
Vapor be changed to be sent to the first absorption and desorption tower 3.In the first absorption and desorption tower 3, absorbent is regenerated, and desorbs two
Carbonoxide；In the second absorption and desorption tower 25, absorbent absorbing carbon dioxide.Accordingly, first row air valve 8 is opened, second row
Air valve 10 is closed, and the carbon dioxide and vapor mixed gas after the desorption of the first absorption and desorption tower 3 are directly entered light-catalyzed reaction
Device 29；3rd air bleeding valve 15 is closed, and the 4th air bleeding valve 17 is opened, and the gas of carbon dioxide is absorbed in the second absorption and desorption tower 25
Body is directly discharged into air, while the concentration of titanium dioxide tower is also detected by the second gas concentration lwevel sensor 16 in gas.
When the second gas concentration lwevel sensor 16 detects that the concentration of carbon dioxide in exit gas is higher than setting
(when inlet gas is air, select 0.1%), it is believed that absorbent reaches saturation in the second absorption and desorption tower 25, switches again
The absorption and desorption state of one absorption and desorption tower 3 and the second absorption and desorption tower 25, i.e. the first absorption and desorption tower 3 are changed into absorbing rank
Section, the second absorption and desorption tower 25 are changed into the desorption and regeneration stage, so circulation.
The second sunlight collector 30 convergence sunshine of photo catalysis reactor 29 is that reative cell 32 provides light source and thermal source,
40-100 DEG C of temperature is provided for reative cell.The mixed gas of vapor and carbon dioxide is after absorption and desorption tower comes out, through the 3rd
Air inlet 31 enters reative cell 32.In reative cell 32, carbon dioxide is with water under the collective effect of sunshine and catalyst 33
Generation reforming reaction generates methanol and oxygen, methanol are directly dissolved in the aqueous solution, and oxygen, unreacted carbon dioxide and water steam
Gas forms mixed gas and enters the 3rd gas-liquid separator 41 through the 3rd gas outlet 40.It is molten after the separation of the 3rd gas-liquid separator 41
Liquid sends reative cell 32 back to through charging aperture 38 again, and the gas after separation is discharged through the upper end of the 3rd gas-liquid separator 41.3rd gas-liquid point
The 3rd gas concentration lwevel sensor 42 is provided with from the upper end of device 41, the concentration of carbon dioxide in gas after being separated for sensing, when
Gas concentration lwevel is higher than setting (0.01%-0.03%), and the 5th air bleeding valve 43 is closed, and the 6th air bleeding valve 44 is opened, separation
Gas afterwards enters reative cell 32 through the 3rd air inlet 311 again；When gas concentration lwevel is less than setting, the 5th air bleeding valve 43 is beaten
Open, the 6th air bleeding valve 44 is closed, and the gas after separation is directly discharged into air, or can further purify oxygen so that industry makes
With.
Type solution concentration sensor 37 is placed in reative cell 32 among the aqueous solution, the concentration of methanol in the aqueous solution is detected, works as first
Determining alcohol exceedes setting (5%-10%), opens second liquid valve 36, the aqueous solution is discharged into methanol storage device through discharge gate 35
45, can be after further purification for commercial Application or as clean fuel.Second liquid valve 36 is then turned off, opens the first liquid
Valve 39, the new aqueous solution is sent into reative cell 32 through charging aperture 38, continues to carry out carbon dioxide photocatalysis in reative cell 32
Prepare the reaction of methanol.
Also specifically, when at night or rainy day etc. without sunshine in the case of, can not temporarily carry out titanium dioxide
The desorption of carbon and Photocatalytic Regeneration process, but still the absorption process of carbon dioxide can be carried out.Now, the first absorption and desorption tower 3
It is the absorbing state of carbon dioxide with the second absorption and desorption tower 25：First intake valve 13 and the second intake valve 14 are opened, and the 3rd
The intake valve 20 of intake valve 19 and the 4th is closed, and air respectively enters the first absorption solution from the first air inlet 6 and the second air inlet 27
The absorption and desorption tower 25 of tower 3 and second is inhaled, is contacted with the absorbent packing layer in tower and carries out absorption mass transfer；First row air valve 8 and
Three air bleeding valves 15 are closed, and the air bleeding valve 17 of second row air valve 10 and the 4th is opened, and titanium dioxide is absorbed in two absorption and desorption towers
Air after carbon is discharged into air through the air bleeding valve 17 of second row air valve 10 and the 4th respectively.After sunshine appearance, then open simultaneously
The desorption and regeneration of dynamic carbon dioxide and catalysis prepare the process of methanol.
It should be noted that above-mentioned specific embodiment can carry out some changes according to practical application, it should be pointed out that right
, under the premise without departing from the principles of the invention, can also be to make some change for those skilled in the art
Dynamic and adjustment, these changes and adjustment also should be protection scope of the present invention.
Claims (9)
1. a kind of collecting carbonic anhydride based on Driven by Solar Energy and recycling system, it is characterised in that inhaled including first
Receive desorber (3), the second absorption and desorption tower (25), steam generator (22) and photo catalysis reactor (29)；
The first absorption and desorption tower (3) is intermittent reactor, can be switched between absorption and desorption both of which；Its
Inside there is supported solid absorbent packing layer, outer surface is covered with light absorbent (2) and zone of heating (4), the first absorption and desorption tower
(3) the first air inlet (6), the first vapor import (5) and the first liquid outlet positioned at first absorption and desorption tower (3) bottom are included
And the first gas outlet (1) for being arranged at the top of the first absorption and desorption tower (3) (7)；The zone of heating (4), its surface scribbles suction
Luminescent material, there is adding thermal resistance in it, be using solar energy or the auxiliary hot heating absorbent packing layer of electricity to assigned temperature, during absorption
30-50 DEG C, be 80 DEG C -100 DEG C during desorption；In the first absorption and desorption tower (3), because absorbent is fixed in packed bed, inhale
It is intermittence to receive absorption and desorption of the agent to carbon dioxide, i.e. absorbent elder generation absorbing carbon dioxide, after absorption reaches saturation
Desorbed, absorbed again after the completion of desorption, so circulation；During absorption, light absorbent (2) absorbs sunshine, makes the first suction
Receive and upper and lower temperature difference is produced in desorber (3), driving air is flowed from bottom to top, and gas is entered by the first air inlet (6) to be absorbed
Desorber (3) bottom, flows through supported solid absorbent packing layer, after the carbon dioxide in gas is absorbed by absorbent, through
One gas outlet (1) is discharged into the first gas-liquid separator (11)；During desorption, vapor caused by water vapor generation device (22) passes through
First absorption and desorption tower (3), heating desorption agent packing layer, and two that absorbent is desorbed are entered by the first vapor import (5)
Carbonoxide carries out the first absorption and desorption tower (3), and the first gas-liquid separator (11) is discharged into through the first gas outlet (1)；
The second absorption and desorption tower (25), concrete structure and operation principle and the first absorption and desorption tower (3) unanimously, including second
Air inlet (27), the second vapor import (26), the second gas outlet (24) and the second liquid outlet (28)；
The water vapor generation device (22), upper end are provided with the first sunlight collector (21), utilize sunshine and the auxiliary heat of electricity
High-temperature vapor is produced, is passed through in desorption in the first absorption and desorption tower (3) and the second absorption and desorption tower (25), as promotion two
The desorption gas stripping gas of carbonoxide desorption；
The photo catalysis reactor (29) includes insulation shell, electric heater (34) and reative cell (32) successively from outside to inside；The
Two sunlight collectors (30) are placed in reative cell (32) upper end, for converging sunshine；The electric heater (34), which has, to be added
Thermal resistance circle and temperature control device, adding thermal resistance circle are arranged between insulation shell and reative cell (32), and the temperature of temperature control device passes
Sensor is placed on liquid internal in reative cell (32), and 40-100 DEG C of temperature is provided for reative cell；The reative cell (32) is normal
Light transmission container is pressed, the sunshine after convergence is irradiated to catalyst and the aqueous solution in reative cell through reative cell wall；Instead
Room (32) is answered to be provided with agitating device, the 3rd air inlet (31), the 3rd gas outlet (40), charging aperture (38), discharge gate (35) and liquid
Concentration sensors (37)；The carbon dioxide and water vapor mixture body desorbed enters reative cell by the 3rd air inlet (31)
(32)；Carbon dioxide reacts with water under the collective effect of catalyst and sunshine, and methanol and oxygen is made；Oxygen and not
Absorbed vapor is directly discharged into air behind the 3rd gas outlet (40) and the 3rd gas-liquid separator (41) or sends reative cell back to
(32)；The first liquid valve (39) and second liquid valve (36) are respectively equipped with the charging aperture (38) and discharge gate of reative cell (32).
2. a kind of collecting carbonic anhydride based on Driven by Solar Energy according to claim 1 and recycling system, its
It is characterised by, in addition to：
First gas-liquid separator (11), it is arranged on the first gas outlet (1) place of the first absorption and desorption tower (3), bottom and the first liquid
Body retracting device (12) is connected, and upper end is connected with first row air valve (8) and second row air valve (10), the first gas-liquid separator (11)
Come out for vapor drop separation will to be carried in the mixed gas of carbon dioxide and vapor, the liquid after separation passes through connection
Pipeline is sent into the first liquid withdrawal system (12), and the gas after separation is discharged through first row air valve (8) or second row air valve (10)；
First row air valve (8) is connected with the 3rd air inlet (31) of reative cell (32)；Second row air valve (10) is communicated with air, and outlet is set
There is the first gas concentration lwevel sensor (9)；When the first absorption and desorption tower (3) is in absorption process, first row air valve (8) closes
Close, second row air valve (10) is opened, and the gas after separation is discharged into air through second row air valve (10)；When in desorption process,
First row air valve (8) is opened, and second row air valve (10) is closed, and the gas after separation is anti-through first row air valve (8) feeding photocatalysis
Answer device (29)；
Second gas-liquid separator (18), concrete structure and operation principle unanimously, are arranged on second with the first gas-liquid separator (11)
The second gas outlet (24) place of absorption and desorption tower (25), bottom are connected with the first liquid withdrawal system (12), upper end and the 3rd row
Air valve (15 and the 4th air bleeding valve (17 connections, (15 are connected the 3rd air bleeding valve with the 3rd air inlet (31) of reative cell (32)；4th
Air bleeding valve (17) communicates with air, and exit is provided with the second gas concentration lwevel sensor (16)；When the second absorption and desorption tower
(25) when being in absorption process, the 3rd air bleeding valve (15) is closed, and the 4th air bleeding valve (17) is opened, and the gas after separation is through the 4th row
Air valve (17) is discharged into air；When in desorption process, the 3rd air bleeding valve (15) is opened, and the 4th air bleeding valve (17) is closed, separation
Gas afterwards is sent into photo catalysis reactor (29) through the 3rd air bleeding valve (15)；
3rd gas-liquid separator (41), it is arranged on the 3rd gas outlet (40) place of reative cell (32), bottom and reative cell (32)
Charging aperture (38) is connected, and upper end is connected with the 5th air bleeding valve (43) and the 6th air bleeding valve (44), and the 3rd gas-liquid separator (41) is used
Sent back in by the water vapor condensation in reative cell exit gas and with oxygen separation, the liquid after separation through first charging aperture (38)
Reative cell (32), the gas after separation is through the 3rd gas concentration lwevel sensor (42) by the 5th air bleeding valve (43) or the 6th row
Air valve (44) is discharged；5th air bleeding valve (43) is connected with the 3rd air inlet (31) of reative cell (32)；6th air bleeding valve (44) with
Air connects, and exit is provided with the 3rd gas concentration lwevel sensor (42)；
First gas concentration lwevel sensor (9), the second gas concentration lwevel sensor (16) and the 3rd gas concentration lwevel pass
Sensor (42) is respectively used to detect the first gas-liquid separator (11), the second gas-liquid separator (18) and the 3rd gas-liquid separator (41)
The carbon dioxide in gas concentration of separation；
Strength of fluid sensor (37), in the liquid of reative cell (32), for sensing methanol in reative cell (32) liquid
Concentration, when methanol concentration is higher than setting, the second liquid valve (36) for opening discharge gate (35) stores solution discharge methanol
Device (45), turn off second liquid valve (36) and open the first liquid valve (39) of charging aperture (38), added into reative cell
The aqueous solution of prescribed volume；
First liquid withdrawal system (12), it is connected with the lower end of the first gas-liquid separator (11) and the second gas-liquid separator (18)
Connect, the condensed vapor gone out for reclaiming and storing gas-liquid separator separates, the liquid after recovery is sent into vapor
Device (22) re-uses.
3. a kind of collecting carbonic anhydride based on Driven by Solar Energy according to claim 1 and recycling system, its
It is characterised by, in addition to：Second liquid retracting device (23), it is connected with the first liquid outlet (7) and the second liquid outlet (28), is used for
The vapor condensed when being desorbed in the first absorption and desorption tower (3) and the second absorption and desorption tower (25) is stored, the liquid after recovery is sent
Enter water vapor generation device (22) re-using.
4. a kind of collecting carbonic anhydride based on Driven by Solar Energy according to claim 1 and recycling system, its
It is characterised by：
Two links of absorption and desorption of the first absorption and desorption tower (3) and the second absorption and desorption tower (25) to carbon dioxide are
What intermittence was carried out, but work as the first absorption and desorption tower (3) and absorbed, when the second absorption and desorption tower (25) is desorbed；Or work as
First absorption and desorption tower (4) is desorbed, and when the second absorption and desorption tower (25) carries out absorption and desorption, can ensure carbon dioxide
Carried out while two links of absorption and desorption.
5. a kind of collecting carbonic anhydride based on Driven by Solar Energy and recycling system described in any one of Claims 1-4
The collecting carbonic anhydride of system and recycling method, it is characterised in that comprise the following steps：
(1) in the first absorption and desorption tower (3), the absorption process of carbon dioxide is carried out, light absorbent (2) is using solar energy the
Temperature difference, the bottom-up flowing of air in driving tower, air absorb from first up and down caused by one absorption and desorption tower (3) inside
Desorber (3) the first air inlet of bottom (6) is sent into, and air and the contact of absorbent packing layer carry out absorption mass transfer；Absorbed two
Gas after carbonoxide is directly discharged into air after the first gas-liquid separator (11)；
(2) in the second absorption and desorption tower (25), the desorption process of carbon dioxide is carried out, zone of heating (4) is using solar energy by the
Two absorption and desorption towers (25) are heated to assigned temperature, and water vapor generation device (22) utilizes vapor caused by solar energy from second
Vapor import (26) enters the second absorption and desorption tower (25)；Vapor connects with absorbing the absorbent packing layer after carbon dioxide
Touch, the carbon dioxide desorbed from absorbent is carried from second absorption and desorption tower (25) upper end by vapor and discharged；When the first suction
I.e. the first gas concentration lwevel sensor (9) when the absorbent absorbing carbon dioxide in desorber (3) reaches saturation is received to detect
When the concentration of carbon dioxide is higher than setting in exit gas, the absorption and desorption pattern switching of two absorption and desorption towers, first
Absorption and desorption tower (3) carries out desorption process, and the second absorption and desorption tower (25) carries out absorption link；When the second absorption and desorption tower (25)
In absorbent absorbing carbon dioxide when reaching saturation i.e. the second gas concentration lwevel sensor (16) detect in exit gas
When the concentration of carbon dioxide is higher than setting, the absorption and desorption pattern of two absorption and desorption towers switches again, so circulation；
(3) carbon dioxide and vapor mixed gas come out from the first absorption and desorption tower (3) and the second absorption and desorption tower (25)
3rd air inlet (31) of reacted room (32) enters photo catalysis reactor (29)；The temperature control device control of electric heater (34) adds
Thermal resistance circle heats to reative cell (32)；In reative cell (32), carbon dioxide and water are in sunshine and catalyst (33)
In the presence of, the reaction for preparing methanol of carbon dioxide and water occurs, produces methanol and oxygen；The oxygen and part vapor of generation,
Discharged from the 3rd gas outlet (40), through the 3rd gas-liquid separator (41), be discharged into air or send reative cell (32) back to and continue to react；
(4) when strength of fluid sensor (37 detect that the methanol concentration of liquid in reative cell (32) is higher than setting when, by liquid
Transfer to methanol storage device (45), and to reative cell (32) liquid make-up.
6. according to the method for claim 5, it is characterised in that：
Absorbent in the step (1) and (2) in the first absorption and desorption tower (3) and the second absorption and desorption tower (25) is easily regeneration
N methyldiethanol amine MDEA solution or functional ion solution dipping activated carbon or solid particle bead, specifically load material
Material, solution formula and concentration are determined according to carbon dioxide in gas concentration.
7. according to the method for claim 5, it is characterised in that：
In the step (3), the catalyst in the reative cell (32) is Cu/TiO2Or Th/TiO2, utilize copper sulphate, nitric acid
Copper, copper chloride, copper sulphate or thorium oxide and thorium silicate, thorium nitrate or thorium tetrachloride solution oxide impregnation titanium bead, by Cu or
Th ion loads are in TiO2Respective load catalyst is prepared on bead.
8. according to the method for claim 5, it is characterised in that：
Liquid in the step (4) in reative cell, main component is water, and the aqueous solution is adjusted using sodium acid carbonate or acid solution
Acid-base value.
9. according to the method for claim 5, it is characterised in that：
The first absorption and desorption tower (3) and the second absorption and desorption tower (25) are flowed using Driven by Solar Energy air in tower, and
There is provided heat energy for absorbent desorption and regeneration and stripping gas carry gas i.e. vapor, the photo catalysis reactor (29) use solar energy for
Light-catalyzed reaction process provides thermal source.
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