CN116199248A - Method for preparing nano calcium carbonate by recycling carbon dioxide absorbent - Google Patents
Method for preparing nano calcium carbonate by recycling carbon dioxide absorbent Download PDFInfo
- Publication number
- CN116199248A CN116199248A CN202310298878.7A CN202310298878A CN116199248A CN 116199248 A CN116199248 A CN 116199248A CN 202310298878 A CN202310298878 A CN 202310298878A CN 116199248 A CN116199248 A CN 116199248A
- Authority
- CN
- China
- Prior art keywords
- carbon dioxide
- absorbent
- calcium carbonate
- nano calcium
- steps
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 286
- 239000002250 absorbent Substances 0.000 title claims abstract description 160
- 230000002745 absorbent Effects 0.000 title claims abstract description 160
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 146
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 146
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title claims abstract description 124
- 238000000034 method Methods 0.000 title claims abstract description 75
- 229910000019 calcium carbonate Inorganic materials 0.000 title claims abstract description 62
- 238000004064 recycling Methods 0.000 title claims abstract description 31
- 238000006243 chemical reaction Methods 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000000047 product Substances 0.000 claims abstract description 25
- 239000002244 precipitate Substances 0.000 claims abstract description 23
- 239000002608 ionic liquid Substances 0.000 claims abstract description 22
- 239000000243 solution Substances 0.000 claims abstract description 21
- 150000001412 amines Chemical class 0.000 claims abstract description 19
- 238000001914 filtration Methods 0.000 claims abstract description 17
- 239000007864 aqueous solution Substances 0.000 claims abstract description 16
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 16
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 16
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 16
- 229910017053 inorganic salt Inorganic materials 0.000 claims abstract description 15
- 238000003763 carbonization Methods 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims abstract description 14
- 230000032683 aging Effects 0.000 claims abstract description 12
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000292 calcium oxide Substances 0.000 claims abstract description 12
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000001035 drying Methods 0.000 claims abstract description 12
- 239000000706 filtrate Substances 0.000 claims abstract description 12
- 238000005406 washing Methods 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 5
- -1 amine compound Chemical class 0.000 claims description 52
- 238000010521 absorption reaction Methods 0.000 claims description 26
- 230000005587 bubbling Effects 0.000 claims description 22
- OPKOKAMJFNKNAS-UHFFFAOYSA-N N-methylethanolamine Chemical compound CNCCO OPKOKAMJFNKNAS-UHFFFAOYSA-N 0.000 claims description 16
- 239000007789 gas Substances 0.000 claims description 15
- 235000001014 amino acid Nutrition 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 150000001413 amino acids Chemical group 0.000 claims description 12
- 229940058020 2-amino-2-methyl-1-propanol Drugs 0.000 claims description 11
- CBTVGIZVANVGBH-UHFFFAOYSA-N aminomethyl propanol Chemical compound CC(C)(N)CO CBTVGIZVANVGBH-UHFFFAOYSA-N 0.000 claims description 11
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 11
- 125000000217 alkyl group Chemical group 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 claims description 6
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 claims description 6
- NQRYJNQNLNOLGT-UHFFFAOYSA-N Piperidine Chemical compound C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 claims description 6
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 6
- 125000003118 aryl group Chemical group 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 150000007942 carboxylates Chemical group 0.000 claims description 6
- CRVGTESFCCXCTH-UHFFFAOYSA-N methyl diethanolamine Chemical compound OCCN(C)CCO CRVGTESFCCXCTH-UHFFFAOYSA-N 0.000 claims description 6
- WGYKZJWCGVVSQN-UHFFFAOYSA-N propylamine Chemical compound CCCN WGYKZJWCGVVSQN-UHFFFAOYSA-N 0.000 claims description 6
- FSYKKLYZXJSNPZ-UHFFFAOYSA-N sarcosine Chemical compound C[NH2+]CC([O-])=O FSYKKLYZXJSNPZ-UHFFFAOYSA-N 0.000 claims description 6
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 5
- 150000001450 anions Chemical group 0.000 claims description 4
- 150000001768 cations Chemical class 0.000 claims description 4
- KPUBXONXNWPZIN-UHFFFAOYSA-N 1-cyano-2,3-dimethylguanidine Chemical compound CNC(NC)=NC#N KPUBXONXNWPZIN-UHFFFAOYSA-N 0.000 claims description 3
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 claims description 3
- VUAXHMVRKOTJKP-UHFFFAOYSA-N 2,2-dimethylbutyric acid Chemical compound CCC(C)(C)C(O)=O VUAXHMVRKOTJKP-UHFFFAOYSA-N 0.000 claims description 3
- GIAFURWZWWWBQT-UHFFFAOYSA-N 2-(2-aminoethoxy)ethanol Chemical compound NCCOCCO GIAFURWZWWWBQT-UHFFFAOYSA-N 0.000 claims description 3
- FUOOLUPWFVMBKG-UHFFFAOYSA-N 2-Aminoisobutyric acid Chemical compound CC(C)(N)C(O)=O FUOOLUPWFVMBKG-UHFFFAOYSA-N 0.000 claims description 3
- OBETXYAYXDNJHR-UHFFFAOYSA-N 2-Ethylhexanoic acid Chemical compound CCCCC(CC)C(O)=O OBETXYAYXDNJHR-UHFFFAOYSA-N 0.000 claims description 3
- DYWSVUBJGFTOQC-UHFFFAOYSA-M 2-ethylheptanoate Chemical compound CCCCCC(CC)C([O-])=O DYWSVUBJGFTOQC-UHFFFAOYSA-M 0.000 claims description 3
- HWXRWNDOEKHFTL-UHFFFAOYSA-M 2-propylhexanoate Chemical compound CCCCC(C([O-])=O)CCC HWXRWNDOEKHFTL-UHFFFAOYSA-M 0.000 claims description 3
- UNIJBMUBHBAUET-UHFFFAOYSA-N 3-(methylamino)propanenitrile Chemical compound CNCCC#N UNIJBMUBHBAUET-UHFFFAOYSA-N 0.000 claims description 3
- JEGMWWXJUXDNJN-UHFFFAOYSA-N 3-methylpiperidine Chemical compound CC1CCCNC1 JEGMWWXJUXDNJN-UHFFFAOYSA-N 0.000 claims description 3
- XZMCDFZZKTWFGF-UHFFFAOYSA-N Cyanamide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 claims description 3
- VUXKVKAHWOVIDN-UHFFFAOYSA-N Cyclohexyl formate Chemical compound O=COC1CCCCC1 VUXKVKAHWOVIDN-UHFFFAOYSA-N 0.000 claims description 3
- XBPCUCUWBYBCDP-UHFFFAOYSA-N Dicyclohexylamine Chemical compound C1CCCCC1NC1CCCCC1 XBPCUCUWBYBCDP-UHFFFAOYSA-N 0.000 claims description 3
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims description 3
- QNAYBMKLOCPYGJ-REOHCLBHSA-N L-alanine Chemical compound C[C@H](N)C(O)=O QNAYBMKLOCPYGJ-REOHCLBHSA-N 0.000 claims description 3
- UEEJHVSXFDXPFK-UHFFFAOYSA-O N-dimethylethanolamine Chemical compound C[NH+](C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-O 0.000 claims description 3
- WUGQZFFCHPXWKQ-UHFFFAOYSA-N Propanolamine Chemical compound NCCCO WUGQZFFCHPXWKQ-UHFFFAOYSA-N 0.000 claims description 3
- 108010077895 Sarcosine Proteins 0.000 claims description 3
- 235000004279 alanine Nutrition 0.000 claims description 3
- DFNYGALUNNFWKJ-UHFFFAOYSA-N aminoacetonitrile Chemical compound NCC#N DFNYGALUNNFWKJ-UHFFFAOYSA-N 0.000 claims description 3
- LHIJANUOQQMGNT-UHFFFAOYSA-N aminoethylethanolamine Chemical compound NCCNCCO LHIJANUOQQMGNT-UHFFFAOYSA-N 0.000 claims description 3
- AGSPXMVUFBBBMO-UHFFFAOYSA-O beta-ammoniopropionitrile Chemical compound [NH3+]CCC#N AGSPXMVUFBBBMO-UHFFFAOYSA-O 0.000 claims description 3
- SHZIWNPUGXLXDT-UHFFFAOYSA-N caproic acid ethyl ester Natural products CCCCCC(=O)OCC SHZIWNPUGXLXDT-UHFFFAOYSA-N 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 3
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 claims description 3
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 claims description 3
- LVTYICIALWPMFW-UHFFFAOYSA-N diisopropanolamine Chemical compound CC(O)CNCC(C)O LVTYICIALWPMFW-UHFFFAOYSA-N 0.000 claims description 3
- 229940043276 diisopropanolamine Drugs 0.000 claims description 3
- OAGOUCJGXNLJNL-UHFFFAOYSA-N dimethylcyanamide Chemical compound CN(C)C#N OAGOUCJGXNLJNL-UHFFFAOYSA-N 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 3
- JJWLVOIRVHMVIS-UHFFFAOYSA-N isopropylamine Chemical compound CC(C)N JJWLVOIRVHMVIS-UHFFFAOYSA-N 0.000 claims description 3
- WWZKQHOCKIZLMA-UHFFFAOYSA-M octanoate Chemical compound CCCCCCCC([O-])=O WWZKQHOCKIZLMA-UHFFFAOYSA-M 0.000 claims description 3
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 claims description 3
- 229940043230 sarcosine Drugs 0.000 claims description 3
- 159000000000 sodium salts Chemical class 0.000 claims description 3
- XOAAWQZATWQOTB-UHFFFAOYSA-N taurine Chemical compound NCCS(O)(=O)=O XOAAWQZATWQOTB-UHFFFAOYSA-N 0.000 claims description 3
- YBRBMKDOPFTVDT-UHFFFAOYSA-N tert-butylamine Chemical compound CC(C)(C)N YBRBMKDOPFTVDT-UHFFFAOYSA-N 0.000 claims description 3
- NIJJYAXOARWZEE-UHFFFAOYSA-M valproate Chemical compound CCCC(C([O-])=O)CCC NIJJYAXOARWZEE-UHFFFAOYSA-M 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 description 14
- 230000002572 peristaltic effect Effects 0.000 description 12
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 10
- 239000000126 substance Substances 0.000 description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 6
- 239000013078 crystal Substances 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 239000003112 inhibitor Substances 0.000 description 5
- 239000003960 organic solvent Substances 0.000 description 5
- 239000000779 smoke Substances 0.000 description 5
- 239000011684 sodium molybdate Substances 0.000 description 5
- 235000015393 sodium molybdate Nutrition 0.000 description 5
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 description 5
- 238000003795 desorption Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000008929 regeneration Effects 0.000 description 4
- 238000011069 regeneration method Methods 0.000 description 4
- 230000002441 reversible effect Effects 0.000 description 4
- 235000008206 alpha-amino acids Nutrition 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000003760 magnetic stirring Methods 0.000 description 2
- 230000010358 mechanical oscillation Effects 0.000 description 2
- 238000010907 mechanical stirring Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- AZUYLZMQTIKGSC-UHFFFAOYSA-N 1-[6-[4-(5-chloro-6-methyl-1H-indazol-4-yl)-5-methyl-3-(1-methylindazol-5-yl)pyrazol-1-yl]-2-azaspiro[3.3]heptan-2-yl]prop-2-en-1-one Chemical compound ClC=1C(=C2C=NNC2=CC=1C)C=1C(=NN(C=1C)C1CC2(CN(C2)C(C=C)=O)C1)C=1C=C2C=NN(C2=CC=1)C AZUYLZMQTIKGSC-UHFFFAOYSA-N 0.000 description 1
- ISCJLIJIOFOWTR-UHFFFAOYSA-N 5-hydroxypentanenitrile Chemical compound OCCCCC#N ISCJLIJIOFOWTR-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 229910021532 Calcite Inorganic materials 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 229940124532 absorption promoter Drugs 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- AYJRCSIUFZENHW-DEQYMQKBSA-L barium(2+);oxomethanediolate Chemical compound [Ba+2].[O-][14C]([O-])=O AYJRCSIUFZENHW-DEQYMQKBSA-L 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- QGUAJWGNOXCYJF-UHFFFAOYSA-N cobalt dinitrate hexahydrate Chemical compound O.O.O.O.O.O.[Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O QGUAJWGNOXCYJF-UHFFFAOYSA-N 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 150000005677 organic carbonates Chemical class 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- GZWNUORNEQHOAW-UHFFFAOYSA-M potassium;2-aminoacetate Chemical compound [K+].NCC([O-])=O GZWNUORNEQHOAW-UHFFFAOYSA-M 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000009919 sequestration Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
- C01F11/182—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by an additive other than CaCO3-seeds
- C01F11/183—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by an additive other than CaCO3-seeds the additive being an organic compound
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/20—Particle morphology extending in two dimensions, e.g. plate-like
- C01P2004/24—Nanoplates, i.e. plate-like particles with a thickness from 1-100 nanometer
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention relates to a method for preparing nano calcium carbonate by recycling a carbon dioxide absorbent, which comprises the following steps: selecting at least one of an organic amine absorbent, an ionic liquid absorbent and an inorganic salt absorbent as a carbon dioxide absorbent; introducing carbon dioxide-containing gas into a carbon dioxide absorbent, and capturing carbon dioxide to obtain rich liquid; desorbing and enriching the carbon dioxide rich solution at the temperature of 0-100 ℃; under the condition of stirring, introducing the enriched carbon dioxide into a 1-50% calcium hydroxide aqueous solution for carbonization reaction, and fully reacting to obtain a precipitate; and (5) filtering, ageing for 1-48 h, washing and drying the precipitate to obtain a nano calcium carbonate product, and returning the absorbent obtained after the filtered filtrate reacts with calcium oxide to remove excessive water to the step (II) for recycling. The method has the advantages of simple production flow, low production cost and low energy consumption, and can prepare the nano calcium carbonate with good dispersibility, controllable size and controllable morphology.
Description
Technical Field
The invention relates to the technical field of carbon dioxide trapping and nano calcium carbonate manufacturing, in particular to a method for preparing nano calcium carbonate by recycling a carbon dioxide absorbent.
Background
The carbon dioxide utilization refers to a process of recycling the captured carbon dioxide by engineering means, and the main utilization modes comprise two major types of Carbon Capture Utilization (CCU) and Carbon Capture Utilization and Sequestration (CCUS). The carbon dioxide utilization can be divided into geology, chemical industry, biological utilization and the like according to different engineering technical means. In the aspect of chemical utilization, the technology development level at home and abroad is equivalent, and the highest development level is to prepare high-added-value chemicals such as synthetic organic carbonate and the like by utilizing carbon dioxide. The current carbon capture and utilization has the problems of low efficiency, high energy consumption, high cost and the like, and the energy consumption and the cost are mainly concentrated in the carbon dioxide capture and analysis links. Because energy consumption in the capturing and converting processes is a key to cost, it is particularly important to find breakthrough technologies to solve the energy consumption problem.
Chemical absorption is one of the effective methods for capturing carbon dioxide, and the core is to develop a highly efficient and stable carbon dioxide absorbent. The existing organic amine absorbent, ionic liquid absorbent, inorganic salt absorbent and the like are relatively mature.
The organic amine process for capturing and recovering carbon dioxide is one of the most important and successful processes for industrial application. The invention patent CN113797713A reports an organic amine absorbent which has the advantages of strong absorption capacity, low regeneration energy consumption, stable cyclic absorption performance and the like. The invention patent CN103394277B reports an organic amine composite absorbent for removing carbon dioxide in coal-fired flue gas, which has the advantages of good stability, large absorption capacity, high purification degree, low regeneration energy consumption, good desorption effect, capability of greatly reducing degradation loss of the composite absorbent in the use process and the like.
Reversible ionic liquids have unique advantages in the process of absorbing and analyzing carbon dioxide due to their own reversible nature, such as reduced energy consumption: the pure ionic liquid is mainly physical adsorption, and is convenient to analyze; high thermal and chemical stability: the ionic liquid is not decomposed and not easy to oxidize under the normal temperature condition; low volatility: the ionic liquid has low vapor pressure and basically does not pollute the environment; the structural designability is strong: the physicochemical properties of the ionic liquid can be further regulated and controlled by regulating anions and cations; the method has the advantages of good regeneration performance and the like, and further provides a new idea and method for capturing carbon dioxide. The invention patent CN102441312B reports a recyclable ionic liquidThe positive ion of the absorbent is a multi-nitrogen straight-chain amine substance, and the negative ion is an organic acid radical or an inorganic acid radical. Which can absorb CO at room temperature or at high temperature 2 For CO in the mixed gas 2 The absorption effect of more than 15% can be achieved, and the desorption rate of the absorbed ionic liquid is more than 99%, so that the ionic liquid can be recycled. The original absorption capacity can be maintained after repeated use for a plurality of times. The invention patent CN113491934A reports an ionic liquid carbon dioxide absorbent, which can maintain good absorption and regeneration performances and can solve the problem that the absorbent is easy to degrade, and has good application prospect in the field of carbon dioxide capture.
The inorganic salt absorbent has the characteristics of strong oxidation resistance, non-volatility, small environmental hazard and the like. The invention patent CN112295366A reports an alpha-amino acid salt absorbent for capturing carbon dioxide, which forms a brand new alpha-amino acid salt absorbent by mixing a specific main absorbent alpha-amino acid salt, an absorption promoter, a solvent promoter and water according to proper proportion. Compared with the prior art, the invention has the advantages of less volatilization and operation loss, good oxidation and degradation resistance, large carbon dioxide saturated absorption capacity and the like. The invention patent CN 108722116A reports an inorganic salt type carbon dioxide absorbent, which comprises amino acid salt, ionic liquid, ammonia water and a stabilizer, is environment-friendly, is not easy to degrade and has long service life.
Currently, carbon dioxide capture absorbent technology is well established, but the effective utilization of carbon dioxide is greatly limited by the fact that the captured carbon dioxide is mostly handled in storage form, or transported to downstream manufacturers after storage.
The carbon dioxide utilization aspect is mainly used for producing chemical raw materials of products such as urea, silicon dioxide, carbon monoxide, barium carbonate, calcium carbonate and the like. The nano calcium carbonate has wide application in the industrial fields of plastics, paint, printing ink, paper making, rubber, medicine and the like. With the expansion of the market demand of nano-sized calcium carbonate, the yield of nano-sized calcium carbonate is continuously improved. The Chinese patent No. 115196663A reports a preparation method of controllable prepared nano calcium carbonate, which focuses on the improvement and optimization of a crystal form control agent, uses a disubstituted imidazole amino acid based ionic liquid as a main crystal form control agent, utilizes good adsorptivity of the ionic liquid on the surface of calcium carbonate crystal, and controls the crystal nucleus formation and growth rate of the calcium carbonate, thereby reducing product agglomeration and obtaining the nano calcium carbonate with good dispersibility. In the preparation method of calcium carbonate reported in Chinese patent No. 109574057B, calcined limestone and aqueous solution of acetone are required to be mixed and added into a supercritical device with high temperature (360-400 ℃) and high pressure (15-25 MPa) in the preparation stage of raw materials, and the curing process also involves the supercritical device. Although the calcium carbonate prepared by the method has high purity and good dispersibility, the process relates to a high-temperature and high-pressure production environment, and is safe, high in equipment and capital investment and poor in production economy.
At present, most of reported processes focus on carbon dioxide capture and conversion respectively, and continuous capture conversion utilization is not realized. Aiming at the problems, the method reported by Chinese patent No. 115350581A for trapping and comprehensively utilizing carbon dioxide takes the flue gas after coarse purification and dust removal as a raw material, firstly traps part of carbon dioxide by a pressure swing adsorption device, and then chemically reacts the residual carbon dioxide in the discharged waste gas with calcium hydroxide to obtain nano calcium carbonate. The concentration process of the carbon dioxide in the method relates to a pressure swing adsorption device, has higher requirements on equipment, and has poor production economy due to the fact that a crystal form control agent is used in the preparation of nano calcium carbonate by utilizing the carbon dioxide. The Chinese patent No. 114159936A reports a carbon dioxide capturing and utilizing and energy comprehensive utilization process and application thereof, wherein the process needs the steps of flue gas dust removal, desulfurization and denitrification, carbon dioxide capturing, carbon dioxide analysis, mineralization reaction and the like. The method has the advantages that the waste heat of the flue gas is reasonably utilized, and the waste heat is used in the analysis of the carbon dioxide, so that the heat energy generated in the production process is utilized to the maximum extent. However, this method requires the addition of a heat recovery device, and the heat recovery apparatus requires a large investment in spite of the reduction of energy input during desorption.
Therefore, the development of a technology integrating carbon dioxide capturing and nano calcium carbonate production, which has the advantages of low cost, low energy consumption, simple and continuous process steps, strong operability and strong product controllability, becomes a problem to be solved urgently.
Disclosure of Invention
The invention aims to provide a method for preparing nano calcium carbonate by recycling a carbon dioxide absorbent, which has the advantages of simple process, low cost and low energy consumption.
In order to solve the problems, the method for preparing nano calcium carbonate by recycling the carbon dioxide absorbent provided by the invention comprises the following steps:
selecting at least one of an organic amine absorbent, an ionic liquid absorbent and an inorganic salt absorbent as a carbon dioxide absorbent;
introducing carbon dioxide-containing gas into the carbon dioxide absorbent, and capturing carbon dioxide to obtain rich liquid;
desorbing and enriching the carbon dioxide rich solution at the temperature of 0-100 ℃;
introducing the enriched carbon dioxide into a calcium hydroxide aqueous solution with the mass concentration of 1-50% under the stirring condition to carry out carbonization reaction, and fully reacting to obtain a precipitate; the molar ratio of the addition amount of the calcium hydroxide aqueous solution to the trapped carbon dioxide is 0.1:1-1:1;
and fifthly, filtering, ageing for 1-48 h, washing and drying the precipitate to obtain a nano calcium carbonate product, and returning the absorbent obtained after the filtered filtrate reacts with calcium oxide to remove excessive water to the step for recycling.
The organic amine absorbent is prepared by uniformly mixing an amine compound with a structure of a general formula I or a general formula II or a general formula III with a conventional absorbent according to a mass ratio of 1:1-5;
the general formula I:
the method comprises the steps of carrying out a first treatment on the surface of the The general formula II: />
The method comprises the steps of carrying out a first treatment on the surface of the The general formula III:>
the method comprises the steps of carrying out a first treatment on the surface of the Wherein: r is one of alkyl, alkyl and aryl; r is R 1 Or R is 2 Is one of hydrogen, alkyl and aryl, and R 1 And R is R 2 And are different.
The amine compound is one of cyanamide, dicyandiamide, aminoacetonitrile, 3-aminopropionitrile, 3-methylaminopropionitrile, 1-cyclopropylpiperazine-2-carbonitrile, dimethyl cyanamide and 2-cyano-1, 3-dimethyl guanidine.
The conventional absorbent is one of monoethanolamine, diethanolamine, triethanolamine, diethylenetriamine, triethylenetetramine, diethylamine, N-methyldiethanolamine, N- (2-hydroxyethyl) ethylenediamine, 2-methylaminoethanol, N-dimethylethanolamine, 3-aminopropanol, diisopropanolamine, hetero-azabicyclo, diglycolamine, 2-amino-2-methyl-1-propanol, piperazine, morpholine, N-propylamine, isopropylamine, dicyclohexylamine, tert-butylamine, piperidine, 3-methylpiperidine.
The ionic liquid absorbent is an anion with an amino acid structure, and the structural formula of the amino acid is as follows: h 2 N-R-COOH(R=C n H 2n N=1 to 5; or organic amine salt cations and organic alcohol amine cations; the alcohol amine is one or more of monoethanolamine, diethanolamine, triethanolamine, N-methyldiethanolamine, and 2-amino-2-methyl-1-propanol.
The inorganic salt absorbent in the step (A) is an absorbent taking amino acid salt as a main component and comprises potassium salt or sodium salt of amino acid, wherein the amino acid comprises one or more of alanine, sarcosine, 2-methyl alanine and aminoethanesulfonic acid; or the inorganic salt absorbent is an absorbent which takes carboxylate compounds as a main component and comprises carboxylate anions which are carboxylate groups with carbon chains with more than 3 carbon atoms and cations which are substituted quaternary ammonium ions and/or quaternary phosphonium ions.
The carboxylate with carbon chain with carbon number more than 3 is at least one of 2, 2-dimethylbutyrate, 2-dimethylhexanoate, 2-ethylhexanoate, 2-ethylheptanoate, 2-propylvalerate, 2-propylhexanoate, cyclohexylformate and n-octanoate.
The carbon dioxide content in the gas containing carbon dioxide in the step II is more than or equal to 400 ppm; the flow rate is 10-25 mL/min.
The trapping mode in the step is that the carbon dioxide absorbent is introduced in a bubbling mode; the bubbling time is 1-12 h, and the absorption temperature is 0-100 ℃.
The carbonization reaction temperature is 20-80 ℃ and the reaction pressure is 0.1-1 MPa; the reaction time is 0.5-24 h.
The stirring mode in the step refers to one of magnetic stirring, mechanical stirring or mechanical oscillation.
The filtering mode in the step five is one of natural sedimentation, filter cloth filtering and centrifugal filtering.
Compared with the prior art, the invention has the following advantages:
1. the carbon dioxide absorbent used in the invention can effectively capture carbon dioxide, and can be put into the carbon dioxide capture of the next round through a low-energy-consumption desorption process and can be recycled for multiple times.
2. The method has the advantages of efficiently capturing carbon dioxide and preparing the nano calcium carbonate with low energy consumption, and the nano calcium carbonate with good dispersibility, controllable size and controllable morphology can be prepared by adopting the method.
3. The invention has simple production flow, low production cost, low energy consumption and wide application field range, and can realize large-scale production.
Drawings
The following describes the embodiments of the present invention in further detail with reference to the drawings.
FIG. 1 is a flow chart of the preparation of nano calcium carbonate according to the present invention.
FIG. 2 is an X-ray diffraction pattern of the disk-shaped nano calcium carbonate particles prepared in example 1 of the present invention.
FIG. 3 is a scanning electron microscope image of the disk-shaped nano calcium carbonate particles prepared in example 1 of the present invention.
Detailed Description
As shown in fig. 1, a method for preparing nano calcium carbonate by recycling carbon dioxide absorbent comprises the following steps:
at least one of an organic amine absorbent, an ionic liquid absorbent and an inorganic salt absorbent is selected as a carbon dioxide absorbent. Wherein:
the organic amine absorbent is prepared by uniformly mixing an amine compound with a structure shown in a general formula I or a general formula II or a general formula III with a conventional absorbent according to a mass ratio of 1:1-5;
general formula I:
the method comprises the steps of carrying out a first treatment on the surface of the General formula II: />
The method comprises the steps of carrying out a first treatment on the surface of the General formula III>
The method comprises the steps of carrying out a first treatment on the surface of the Wherein: r is one of alkyl, alkyl and aryl; r is R 1 Or R is 2 Is one of hydrogen, alkyl and aryl, and R 1 And R is R 2 And are different.
The amine compound is preferably one of cyanamide, dicyandiamide, aminoacetonitrile, 3-aminopropionitrile, 3-methylaminopropionitrile, 1-cyclopropylpiperazine-2-carbonitrile, dimethyl cyanamide and 2-cyano-1, 3-dimethyl guanidine.
Conventional absorbents are one of monoethanolamine, diethanolamine, triethanolamine, diethylenetriamine, triethylenetetramine, diethylamine, N-methyldiethanolamine, N- (2-hydroxyethyl) ethylenediamine, 2-methylaminoethanol, N-dimethylethanolamine, 3-aminopropanol, diisopropanolamine, hetero-azabicyclo, diglycolamine, 2-amino-2-methyl-1-propanol, piperazine, morpholine, N-propylamine, isopropylamine, dicyclohexylamine, tert-butylamine, piperidine, 3-methylpiperidine.
The ionic liquid absorbent is an anion with an amino acid structure, and the structural formula of the amino acid is as follows: h 2 N-R-COOH(R=C n H 2n N=1 to 5; or organic amine salt cations and organic alcohol amine cations; alcohol amine is ethanolOne or more of amines, diethanolamine, triethanolamine, N-methyldiethanolamine, 2-amino-2-methyl-1-propanol. The ionic liquid and the alcohol amine are not limited to the above, and may be any one or more thereof.
The inorganic salt absorbent is absorbent with amino acid salt as main component, and comprises potassium salt or sodium salt of amino acid, wherein the amino acid is one or more of alanine, sarcosine, 2-methyl alanine and aminoethanesulfonic acid; or the inorganic salt absorbent is an absorbent which takes carboxylate compounds as a main component and comprises carboxylate anions which are carboxylate groups with carbon chains with more than 3 carbon atoms and cations which are substituted quaternary ammonium ions and/or quaternary phosphonium ions. The carboxylate having a carbon chain with a carbon number of more than 3 is preferably at least one of 2, 2-dimethylbutyrate, 2-dimethylhexanoate, 2-ethylhexanoate, 2-ethylheptanoate, 2-propylvalerate, 2-propylhexanoate, cyclohexylformate and n-octanoate.
Introducing carbon dioxide-containing gas with the flow rate of 10-25 mL/min into a carbon dioxide absorbent, capturing carbon dioxide, and introducing the capturing mode into the carbon dioxide absorbent in a bubbling mode; the bubbling time is 1-12 h, and the absorption temperature is 0-100 ℃. After the trapping is completed, a rich solution is obtained.
Wherein: the carbon dioxide content of the carbon dioxide-containing gas (such as natural gas, flue gas, coal gas, air and the like) is more than or equal to 400 ppm.
And thirdly, desorbing and enriching the carbon dioxide rich solution at the temperature of 0-100 ℃.
Introducing the enriched carbon dioxide into a calcium hydroxide aqueous solution with the mass concentration of 1-50% under the stirring condition, performing carbonization reaction for 0.5-24 h under the conditions of the reaction temperature of 20-80 ℃ and the reaction pressure of 0.1-1 MPa, and performing full reaction to obtain a precipitate product; the molar ratio of the addition amount of the calcium hydroxide aqueous solution to the captured carbon dioxide is 0.1:1-1:1.
Wherein: the stirring mode refers to one of magnetic stirring, mechanical stirring or mechanical oscillation.
And fifthly, filtering the precipitation product by adopting one of natural sedimentation, filter cloth filtration and centrifugal filtration, aging for 1-48 h, washing with water, and drying to constant weight to obtain the nano calcium carbonate product with good dispersibility. The filtered filtrate reacts with calcium oxide to remove excessive water, and the obtained absorbent is returned to the step for recycling.
The carbon dioxide absorbent can fully utilize the waste heat released in the preparation process of nano calcium carbonate to absorb and desorb, can be repeatedly utilized, and has better stability.
The method can be customized into an intermittent production mode according to different actual production equipment, and can also be converted into a continuous production mode by adjusting corresponding proportion and parameters.
The method can be used for preparing the chain-shaped, spherical and other nano calcium carbonate with different morphologies, and particularly can be used for preparing the functional nano calcium carbonate according to different market demands.
Example 1a method for preparing nano calcium carbonate by recycling carbon dioxide absorbent comprises the following steps:
the method comprises the step of selecting an organic amine absorbent as a carbon dioxide absorbent.
Preparing an organic amine carbon dioxide absorbent: the main absorbent 2-amino-2-methyl-1-propanol 15 g (mass percent 15%), the auxiliary absorbent 2-methylaminoethanol 15 g (mass percent 15%), diethanolamine 2.5 g (mass percent 2.5%), the organic solvent dimethyl sulfoxide 2.5 g (mass percent 2.5%), water 64.85 g (mass percent 64.85%) and the corrosion inhibitor sodium molybdate 0.15 g (mass percent 0.15%) are uniformly mixed in a container to prepare an absorbent, and the prepared absorbent is added into an absorption bottle for standby.
Introducing smoke (carbon dioxide content is about 12%) with the flow rate of 15 mL/min into a carbon dioxide absorbent for capturing, wherein the capturing mode adopts a bubbling mode to introduce the smoke into the carbon dioxide absorbent; the bubbling time was 2h and the absorption temperature was 45 ℃. After the trapping is completed, a rich solution is obtained.
And desorbing and enriching the carbon dioxide rich solution at the temperature of 60 ℃.
Under the stirring condition of 800 rpm, introducing the enriched carbon dioxide into a calcium hydroxide aqueous solution with the mass concentration of 42 and g of 20 percent by a gas peristaltic pump, carrying out carbonization reaction for 4 to h under the conditions of the reaction temperature of 60 ℃ and the reaction pressure of 0.1 MPa, and fully reacting to obtain a precipitate product.
And fifthly, filtering the precipitate, aging 2h, washing with water, and drying to constant weight to obtain the nano calcium carbonate product 11.4 g. The filtered filtrate reacts with 110.7 g calcium oxide to remove excessive water, and the obtained absorbent returns to the step for recycling.
The X-ray diffraction and scanning electron microscope test of the obtained nano calcium carbonate can be found from fig. 2 to 3: the prepared calcium carbonate crystal form is mainly calcite phase, and has a micro-morphology of a disc shape with uniform size.
Example 2 a method for preparing nano calcium carbonate by recycling carbon dioxide absorbent, comprising the following steps:
the method comprises the steps of selecting reversible ionic liquids as carbon dioxide absorbent.
Preparing a reversible ionic liquid carbon dioxide absorbent: DBU (1 mmol) and 5-hydroxyvaleronitrile (1 mmol) are added into a two-necked round bottom flask of 100 mL, the mixture is uniformly mixed to prepare an absorbent, and the prepared absorbent is added into an absorption bottle for standby.
Introducing smoke (carbon dioxide content is about 12%) with the flow rate of 15 mL/min into a carbon dioxide absorbent for capturing, wherein a peristaltic pump bubbling mode is adopted for capturing; the bubbling time was 2h and the absorption temperature was 45 ℃. After the trapping is completed, a rich solution is obtained.
And desorbing and enriching the carbon dioxide rich solution at the temperature of 60 ℃.
Under the stirring condition of 800 rpm, introducing the enriched carbon dioxide into a calcium hydroxide aqueous solution with the mass concentration of 42 g of 20% by a gas peristaltic pump, carrying out carbonization reaction for 4h under the conditions of the reaction temperature of 60 ℃ and the reaction pressure of 0.1 MPa, and fully reacting to obtain a precipitate product.
And fifthly, filtering the precipitate, aging for 2 hours, washing with water, and drying to constant weight to obtain the nano calcium carbonate product 11.4 and g. The filtered filtrate reacts with 110.7 g calcium oxide to remove excessive water, and the obtained absorbent returns to the step for recycling.
Example 3a method for preparing nano calcium carbonate by recycling carbon dioxide absorbent, comprising the steps of:
the method comprises the step of selecting inorganic salt liquid as a carbon dioxide absorbent.
Preparing an inorganic salt liquid carbon dioxide absorbent: potassium glycinate 20 g (mass percent 12%), ammonia 1 g (mass percent 1%), cobalt nitrate hexahydrate 0.2 g (mass percent 0.2%), 1-butyl-3-methylimidazole tetrafluoroborate 35 g (mass percent 25%), the balance being water. Uniformly mixing in a beaker to prepare an absorbent, and adding the prepared absorbent into an absorption bottle for standby.
Introducing smoke (carbon dioxide content is about 12%) with the flow rate of 15 mL/min into a carbon dioxide absorbent for capturing, wherein a peristaltic pump bubbling mode is adopted for capturing; the bubbling time was 5 h and the absorption temperature was 40 ℃. After the trapping is completed, a rich solution is obtained.
And desorbing and enriching the carbon dioxide rich solution at the temperature of 60 ℃.
Under the stirring condition of 800 rpm, introducing the enriched carbon dioxide into a calcium hydroxide aqueous solution with the mass concentration of 42 g of 20% by a gas peristaltic pump, carrying out carbonization reaction for 4h under the conditions of the reaction temperature of 60 ℃ and the reaction pressure of 0.1 MPa, and fully reacting to obtain a precipitate product.
And fifthly, filtering the precipitate, aging for 2 hours, washing with water, and drying to constant weight to obtain the nano calcium carbonate product 11.4 and g. The filtered filtrate reacts with 110.7 g calcium oxide to remove excessive water, and the obtained absorbent returns to the step for recycling.
Example 4a method for preparing nano calcium carbonate by recycling carbon dioxide absorbent, comprising the steps of:
the method comprises the step of selecting an organic amine absorbent as a carbon dioxide absorbent.
Preparing an organic amine carbon dioxide absorbent: the main absorbent 2-amino-2-methyl-1-propanol 15 g (mass percent 15%), the auxiliary absorbent 2-methylaminoethanol 15 g (mass percent 15%), diethanolamine 2.5 g (mass percent 2.5%), the organic solvent dimethyl sulfoxide 2.5 g (mass percent 2.5%), water 64.85 g (mass percent 64.85%) and the corrosion inhibitor sodium molybdate 0.15 g (mass percent 0.15%). Uniformly mixing in a beaker to prepare an absorbent, and adding the prepared absorbent into an absorption bottle for standby.
Introducing smoke (carbon dioxide content is about 12%) with the flow rate of 15 mL/min into a carbon dioxide absorbent for capturing, wherein a peristaltic pump bubbling mode is adopted for capturing; the bubbling time was 2h and the absorption temperature was 45 ℃. After the trapping is completed, a rich solution is obtained.
And desorbing and enriching the carbon dioxide rich solution at 20 ℃.
Under the stirring condition of 800 rpm, introducing the enriched carbon dioxide into a calcium hydroxide aqueous solution with the mass concentration of 42 g of 20% by a gas peristaltic pump, carrying out carbonization reaction for 4h under the conditions of the reaction temperature of 60 ℃ and the reaction pressure of 0.1 MPa, and fully reacting to obtain a precipitate product.
And fifthly, filtering the precipitate, aging for 2 hours, washing with water, and drying to constant weight to obtain the nano calcium carbonate product 11.4 and g. The filtered filtrate reacts with 110.7 g calcium oxide to remove excessive water, and the obtained absorbent returns to the step for recycling.
Example 5 a method for preparing nano calcium carbonate by recycling carbon dioxide absorbent, comprising the steps of:
the method comprises the step of selecting an organic amine absorbent as a carbon dioxide absorbent.
Preparing an organic amine carbon dioxide absorbent: preparing an organic amine carbon dioxide absorbent: the main absorbent 2-amino-2-methyl-1-propanol 15 g (mass percent 15%), the auxiliary absorbent 2-methylaminoethanol 15 g (mass percent 15%), diethanolamine 2.5 g (mass percent 2.5%), the organic solvent dimethyl sulfoxide 2.5 g (mass percent 2.5%), water 64.85 g (mass percent 64.85%) and the corrosion inhibitor sodium molybdate 0.15 g (mass percent 0.15%). Uniformly mixing in a beaker to prepare an absorbent, and adding the prepared absorbent into an absorption bottle for standby.
Air with the flow rate of 15 mL/min is introduced into the carbon dioxide absorbent for capturing, and a peristaltic pump bubbling mode is adopted for capturing; the bubbling time was 10 h and the absorption temperature was 60 ℃. After the trapping is completed, a rich solution is obtained.
And desorbing and enriching the carbon dioxide rich solution at the temperature of 60 ℃.
Under the stirring condition of 800 rpm, introducing the enriched carbon dioxide into a calcium hydroxide aqueous solution with the mass concentration of 42 g of 20% by a gas peristaltic pump, carrying out carbonization reaction for 4h under the conditions of the reaction temperature of 60 ℃ and the reaction pressure of 0.1 MPa, and fully reacting to obtain a precipitate product.
And fifthly, filtering the precipitate, aging for 2 hours, washing with water, and drying to constant weight to obtain the nano calcium carbonate product 11.4 and g. The filtered filtrate reacts with 110.7 g calcium oxide to remove excessive water, and the obtained absorbent returns to the step for recycling.
Example 6a method for preparing nano calcium carbonate by recycling carbon dioxide absorbent, comprising the steps of:
the method comprises the step of selecting an organic amine absorbent as a carbon dioxide absorbent.
Preparing an organic amine carbon dioxide absorbent: the main absorbent 2-amino-2-methyl-1-propanol 15 g (mass percent 15%), the auxiliary absorbent 2-methylaminoethanol 15 g (mass percent 15%), diethanolamine 2.5 g (mass percent 2.5%), the organic solvent dimethyl sulfoxide 2.5 g (mass percent 2.5%), water 64.85 g (mass percent 64.85%) and the corrosion inhibitor sodium molybdate 0.15 g (mass percent 0.15%). Uniformly mixing in a beaker to prepare an absorbent, and adding the prepared absorbent into an absorption bottle for standby.
Pure CO with flow rate of 15 mL/min is used 2 Introducing the carbon dioxide absorbent to carry out trapping, wherein the trapping mode adopts a bubbling mode to introduce the carbon dioxide absorbent; the bubbling time was 1 h and the absorption temperature was 45 ℃. After the trapping is completed, a rich solution is obtained.
And desorbing and enriching the carbon dioxide rich solution at the temperature of 60 ℃.
Under the stirring condition of 800 rpm, introducing the enriched carbon dioxide into a calcium hydroxide aqueous solution with the mass concentration of 42 g of 20% by a gas peristaltic pump, carrying out carbonization reaction for 4h under the conditions of the reaction temperature of 60 ℃ and the reaction pressure of 0.1 MPa, and fully reacting to obtain a precipitate product.
And fifthly, filtering the precipitate, aging for 2 hours, washing with water, and drying to constant weight to obtain the nano calcium carbonate product 11.4 and g. The filtered filtrate reacts with 110.7 g calcium oxide to remove excessive water, and the obtained absorbent returns to the step for recycling.
Example 7 a method for preparing nano calcium carbonate by recycling carbon dioxide absorbent, comprising the steps of:
the method comprises the step of selecting an organic amine absorbent as a carbon dioxide absorbent.
Preparing an organic amine carbon dioxide absorbent: the main absorbent 2-amino-2-methyl-1-propanol 150 g (mass percent 15%), the auxiliary absorbent 2-methylaminoethanol 150 g (mass percent 15%), diethanolamine 25 g (mass percent 2.5%), the organic solvent dimethyl sulfoxide 25 g (mass percent 2.5%), water 648.5 g (mass percent 64.85%), and the corrosion inhibitor sodium molybdate 1.5 g (mass percent 0.15%). Uniformly mixing in a beaker to prepare an absorbent, and adding the prepared absorbent into an absorption bottle for standby.
Pure CO with flow rate of 15 mL/min is used 2 Introducing the carbon dioxide absorbent to carry out trapping, wherein the trapping mode adopts a bubbling mode to introduce the carbon dioxide absorbent; the bubbling time was 12h and the absorption temperature was 45 ℃. After the trapping is completed, a rich solution is obtained.
And desorbing and enriching the carbon dioxide rich solution at the temperature of 60 ℃.
Under the stirring condition of 800 rpm, introducing the enriched carbon dioxide into a calcium hydroxide aqueous solution with the mass concentration of 420 and g of 20 percent by a gas peristaltic pump, carrying out carbonization reaction for 4 to h under the conditions of the reaction temperature of 60 ℃ and the reaction pressure of 0.1 MPa, and fully reacting to obtain a precipitate product.
And fifthly, filtering the precipitate, aging 2h, washing with water, and drying to constant weight to obtain the nano calcium carbonate product 114 g. The filtered filtrate reacts with 1107 g calcium oxide to remove excessive water, and the obtained absorbent is returned to the step for recycling.
Example 8 a method for preparing nano calcium carbonate by recycling carbon dioxide absorbent, comprising the steps of:
the organic amine absorbent recovered in example 7 was used as carbon dioxide absorbent.
Pure CO with flow rate of 15 mL/min is used 2 Introducing the carbon dioxide absorbent to carry out trapping, wherein the trapping mode adopts a bubbling mode to introduce the carbon dioxide absorbent; the bubbling time was 12h and the absorption temperature was 45 ℃. After the trapping is completed, a rich solution is obtained.
And desorbing and enriching the carbon dioxide rich solution at the temperature of 60 ℃.
Under the stirring condition of 800 rpm, introducing the enriched carbon dioxide into a calcium hydroxide aqueous solution with the mass concentration of 420 and g of 20 percent by a gas peristaltic pump, carrying out carbonization reaction for 4 to h under the conditions of the reaction temperature of 60 ℃ and the reaction pressure of 0.1 MPa, and fully reacting to obtain a precipitate product.
And fifthly, filtering the precipitate, aging 2h, washing with water, and drying to constant weight to obtain the nano calcium carbonate product 114 g. The filtered filtrate reacts with 1107 g calcium oxide to remove excessive water, and the obtained absorbent is returned to the step for recycling.
Claims (10)
1. A method for preparing nano calcium carbonate by recycling carbon dioxide absorbent comprises the following steps:
selecting at least one of an organic amine absorbent, an ionic liquid absorbent and an inorganic salt absorbent as a carbon dioxide absorbent;
introducing carbon dioxide-containing gas into the carbon dioxide absorbent, and capturing carbon dioxide to obtain rich liquid;
desorbing and enriching the carbon dioxide rich solution at the temperature of 0-100 ℃;
introducing the enriched carbon dioxide into a calcium hydroxide aqueous solution with the mass concentration of 1-50% under the stirring condition to carry out carbonization reaction, and fully reacting to obtain a precipitate; the molar ratio of the addition amount of the calcium hydroxide aqueous solution to the trapped carbon dioxide is 0.1:1-1:1;
and fifthly, filtering, ageing for 1-48 h, washing and drying the precipitate to obtain a nano calcium carbonate product, and returning the absorbent obtained after the filtered filtrate reacts with calcium oxide to remove excessive water to the step for recycling.
2. The method for preparing nano calcium carbonate by using the recyclable carbon dioxide absorbent according to claim 1, wherein the method comprises the following steps: the organic amine absorbent is prepared by uniformly mixing an amine compound with a structure of a general formula I or a general formula II or a general formula III with a conventional absorbent according to a mass ratio of 1:1-5;
the general formula I:
the method comprises the steps of carrying out a first treatment on the surface of the The general formula II: />
The method comprises the steps of carrying out a first treatment on the surface of the The general formula III:>
the method comprises the steps of carrying out a first treatment on the surface of the Wherein: r is one of alkyl, alkyl and aryl; r is R 1 Or R is 2 Is one of hydrogen, alkyl and aryl, and R 1 And R is R 2 And are different.
3. A method for preparing nano calcium carbonate by recycling carbon dioxide absorbent according to claim 2, wherein: the amine compound is one of cyanamide, dicyandiamide, aminoacetonitrile, 3-aminopropionitrile, 3-methylaminopropionitrile, 1-cyclopropylpiperazine-2-carbonitrile, dimethyl cyanamide and 2-cyano-1, 3-dimethyl guanidine.
4. A method for preparing nano calcium carbonate by recycling carbon dioxide absorbent according to claim 2, wherein: the conventional absorbent is one of monoethanolamine, diethanolamine, triethanolamine, diethylenetriamine, triethylenetetramine, diethylamine, N-methyldiethanolamine, N- (2-hydroxyethyl) ethylenediamine, 2-methylaminoethanol, N-dimethylethanolamine, 3-aminopropanol, diisopropanolamine, hetero-azabicyclo, diglycolamine, 2-amino-2-methyl-1-propanol, piperazine, morpholine, N-propylamine, isopropylamine, dicyclohexylamine, tert-butylamine, piperidine, 3-methylpiperidine.
5. The method for preparing nano calcium carbonate by using the recyclable carbon dioxide absorbent according to claim 1, wherein the method comprises the following steps: the ionic liquid absorbent is an anion with an amino acid structure, and the structural formula of the amino acid is as follows: h 2 N-R-COOH(R=C n H 2n N=1 to 5; or organic amine salt cations and organic alcohol amine cations; the alcohol amine is one or more of monoethanolamine, diethanolamine, triethanolamine, N-methyldiethanolamine, and 2-amino-2-methyl-1-propanol.
6. The method for preparing nano calcium carbonate by using the recyclable carbon dioxide absorbent according to claim 1, wherein the method comprises the following steps: the inorganic salt absorbent in the step (A) is an absorbent taking amino acid salt as a main component and comprises potassium salt or sodium salt of amino acid, wherein the amino acid comprises one or more of alanine, sarcosine, 2-methyl alanine and aminoethanesulfonic acid; or the inorganic salt absorbent is an absorbent which takes carboxylate compounds as a main component and comprises carboxylate anions which are carboxylate groups with carbon chains with more than 3 carbon atoms and cations which are substituted quaternary ammonium ions and/or quaternary phosphonium ions.
7. The method for preparing nano calcium carbonate by using the recyclable carbon dioxide absorbent according to claim 6, wherein the method comprises the following steps: the carboxylate with carbon chain with carbon number more than 3 is at least one of 2, 2-dimethylbutyrate, 2-dimethylhexanoate, 2-ethylhexanoate, 2-ethylheptanoate, 2-propylvalerate, 2-propylhexanoate, cyclohexylformate and n-octanoate.
8. The method for preparing nano calcium carbonate by using the recyclable carbon dioxide absorbent according to claim 1, wherein the method comprises the following steps: the carbon dioxide content in the gas containing carbon dioxide in the step II is more than or equal to 400 ppm; the flow rate is 10-25 mL/min.
9. The method for preparing nano calcium carbonate by using the recyclable carbon dioxide absorbent according to claim 1, wherein the method comprises the following steps: the trapping mode in the step is that the carbon dioxide absorbent is introduced in a bubbling mode; the bubbling time is 1-12 h, and the absorption temperature is 0-100 ℃.
10. The method for preparing nano calcium carbonate by using the recyclable carbon dioxide absorbent according to claim 1, wherein the method comprises the following steps: the carbonization reaction temperature is 20-80 ℃ and the reaction pressure is 0.1-1 MPa; the reaction time is 0.5-24 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310298878.7A CN116199248A (en) | 2023-03-24 | 2023-03-24 | Method for preparing nano calcium carbonate by recycling carbon dioxide absorbent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310298878.7A CN116199248A (en) | 2023-03-24 | 2023-03-24 | Method for preparing nano calcium carbonate by recycling carbon dioxide absorbent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116199248A true CN116199248A (en) | 2023-06-02 |
Family
ID=86519227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310298878.7A Pending CN116199248A (en) | 2023-03-24 | 2023-03-24 | Method for preparing nano calcium carbonate by recycling carbon dioxide absorbent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116199248A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102527192A (en) * | 2011-12-23 | 2012-07-04 | 中国石油化工股份有限公司 | Carbon dioxide absorbent containing ionic liquid |
| CN110683544A (en) * | 2018-07-06 | 2020-01-14 | 湖北大学 | Method for improving concentration of carbon dioxide in tail gas of lime rotary kiln |
| CN113087003A (en) * | 2020-01-09 | 2021-07-09 | 国家能源投资集团有限责任公司 | Carbon dioxide absorption and utilization method and application thereof |
| CN113797714A (en) * | 2021-10-14 | 2021-12-17 | 中国科学院兰州化学物理研究所 | Composite absorbent for capturing, separating and purifying carbon dioxide |
| CN114558549A (en) * | 2020-11-27 | 2022-05-31 | 北京驭碳科技有限公司 | Use of carboxylate compounds as absorbents for capturing carbon dioxide |
-
2023
- 2023-03-24 CN CN202310298878.7A patent/CN116199248A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102527192A (en) * | 2011-12-23 | 2012-07-04 | 中国石油化工股份有限公司 | Carbon dioxide absorbent containing ionic liquid |
| CN110683544A (en) * | 2018-07-06 | 2020-01-14 | 湖北大学 | Method for improving concentration of carbon dioxide in tail gas of lime rotary kiln |
| CN113087003A (en) * | 2020-01-09 | 2021-07-09 | 国家能源投资集团有限责任公司 | Carbon dioxide absorption and utilization method and application thereof |
| CN114558549A (en) * | 2020-11-27 | 2022-05-31 | 北京驭碳科技有限公司 | Use of carboxylate compounds as absorbents for capturing carbon dioxide |
| CN113797714A (en) * | 2021-10-14 | 2021-12-17 | 中国科学院兰州化学物理研究所 | Composite absorbent for capturing, separating and purifying carbon dioxide |
Non-Patent Citations (1)
| Title |
|---|
| 陈先勇, 周贵云, 唐琴: "纳米碳酸钙制备的研究", 湖北民族学院学报(自然科学版), no. 04, pages 21 - 23 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Meng et al. | Research progress of aqueous amine solution for CO2 capture: A review | |
| AU2009287464B2 (en) | Processing CO2 utilizing a recirculating solution | |
| US8394350B2 (en) | Catalyst functionalized buffer sorbent pebbles for rapid separation of carbon dioxide from gas mixtures | |
| KR20200071091A (en) | Polyamine-added metal-organic framework for carbon dioxide separation | |
| CA2895691A1 (en) | Co2 capture via amine-co2 product phase separation | |
| US8361195B2 (en) | Slurried solid media for simultaneous water purification and carbon dioxide removal from gas mixtures | |
| CN111298616A (en) | Desulfurized slag regenerated CO2Method for trapping solvent | |
| KR101210929B1 (en) | Carbon dioxide absorbent and method of removal of carbon dioxide from landfill gas by the simultaneous generation of barium carbonate using the same | |
| CN109095732A (en) | A kind of technique based on magnesium processes desulfurization wastewater high-purity magnesium hydroxide | |
| Zhang et al. | Desorption and mineralization of CO2 in amine-based solution by Ca (OH) 2 | |
| CN113087003A (en) | Carbon dioxide absorption and utilization method and application thereof | |
| Wang et al. | An integrated absorption–mineralization process for CO2 capture and sequestration: reaction mechanism, recycling stability, and energy evaluation | |
| EP3620225B1 (en) | Process for co2 capture from gaseous streams | |
| KR102199389B1 (en) | Fractional production method of metal carbonate using industrial wastewater | |
| Guo et al. | Control over crystallization of CaCO 3 micro-particles by a novel CO 2 SM | |
| CH703745B1 (en) | Process for separating and fixing carbon dioxide and apparatus for carrying out the process. | |
| CN116199248A (en) | Method for preparing nano calcium carbonate by recycling carbon dioxide absorbent | |
| KR102032948B1 (en) | A method for separating of metal ions in seawater-based industrial wastewater by ph control and a method for manufacturing high purity carbonate by using thereof | |
| CN104512952A (en) | Method of recovering and reutilizing zinc from zinc ammonia solution | |
| KR101383762B1 (en) | Carbon Dioxide Capture Sorbent and Method for Carbon Dioxide Capture | |
| CN111943858B (en) | Functionalized ionic liquid with anions containing carboxyl and sulfhydryl functional groups, and preparation method and application thereof | |
| CN115178274B (en) | Preparation method and application of sulfur-carrying activated carbon | |
| CN220737039U (en) | System for flue gas carbon entrapment and by-product nano calcium carbonate | |
| KR102576170B1 (en) | Method of Manufacturing Magnesium Carbonate using amine-based absorbent | |
| CN116253350A (en) | Method for preparing nano calcium carbonate by carbon dioxide trapping in-situ recycling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240407 Address after: 256200 Sun Zhen Shi Jia Cun Nan, Zouping City, Binzhou City, Shandong Province Applicant after: Zouping Shengchang calcium Industry Co.,Ltd. Country or region after: China Address before: 730000 No. 18 Tianshui Middle Road, Chengguan District, Gansu, Lanzhou Applicant before: Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences Country or region before: China |
|
| TA01 | Transfer of patent application right |