JP2023027092A - ガス流の脱炭酸方法 - Google Patents
ガス流の脱炭酸方法 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 71
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 141
- 239000010457 zeolite Substances 0.000 claims abstract description 108
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 100
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 99
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 70
- 239000011230 binding agent Substances 0.000 claims abstract description 24
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims description 100
- 239000003463 adsorbent Substances 0.000 claims description 47
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 40
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 40
- 239000000203 mixture Substances 0.000 claims description 31
- 239000004927 clay Substances 0.000 claims description 22
- 239000013078 crystal Substances 0.000 claims description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 11
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 10
- 229910052749 magnesium Inorganic materials 0.000 claims description 10
- 239000011777 magnesium Substances 0.000 claims description 10
- 229910001868 water Inorganic materials 0.000 claims description 8
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 6
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 2
- 235000011089 carbon dioxide Nutrition 0.000 description 58
- 238000001179 sorption measurement Methods 0.000 description 39
- 239000011148 porous material Substances 0.000 description 22
- 238000006114 decarboxylation reaction Methods 0.000 description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 15
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 14
- 229910052753 mercury Inorganic materials 0.000 description 14
- 239000000741 silica gel Substances 0.000 description 13
- 229910002027 silica gel Inorganic materials 0.000 description 13
- 229910052625 palygorskite Inorganic materials 0.000 description 12
- 230000008929 regeneration Effects 0.000 description 12
- 238000011069 regeneration method Methods 0.000 description 12
- 229960000892 attapulgite Drugs 0.000 description 10
- 238000004458 analytical method Methods 0.000 description 9
- 239000004113 Sepiolite Substances 0.000 description 8
- 239000000440 bentonite Substances 0.000 description 8
- 229910000278 bentonite Inorganic materials 0.000 description 8
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 229910052624 sepiolite Inorganic materials 0.000 description 8
- 235000019355 sepiolite Nutrition 0.000 description 8
- 238000000926 separation method Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
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- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
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- 230000000052 comparative effect Effects 0.000 description 3
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- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000004876 x-ray fluorescence Methods 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
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- 238000002441 X-ray diffraction Methods 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
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- 229910021393 carbon nanotube Inorganic materials 0.000 description 2
- 239000008119 colloidal silica Substances 0.000 description 2
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- 238000007906 compression Methods 0.000 description 2
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- 230000000911 decarboxylating effect Effects 0.000 description 2
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000012013 faujasite Substances 0.000 description 2
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- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052901 montmorillonite Inorganic materials 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000002459 porosimetry Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- -1 rare earths Chemical compound 0.000 description 2
- 239000012744 reinforcing agent Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000002336 sorption--desorption measurement Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000005481 NMR spectroscopy Methods 0.000 description 1
- 241000282376 Panthera tigris Species 0.000 description 1
- 101710156645 Peptide deformylase 2 Proteins 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 238000001479 atomic absorption spectroscopy Methods 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
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- 230000001939 inductive effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 150000002680 magnesium Chemical class 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229940110728 nitrogen / oxygen Drugs 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000005424 photoluminescence Methods 0.000 description 1
- 229920005597 polymer membrane Polymers 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000000177 wavelength dispersive X-ray spectroscopy Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
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- 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
- B01D53/02—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 by adsorption, e.g. preparative gas chromatography
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- 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
- B01D53/02—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 by adsorption, e.g. preparative gas chromatography
- B01D53/04—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 by adsorption, e.g. preparative gas chromatography with stationary adsorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D—SEPARATION
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- B01D53/02—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 by adsorption, e.g. preparative gas chromatography
- B01D53/04—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 by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0462—Temperature swing adsorption
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- B01D53/02—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 by adsorption, e.g. preparative gas chromatography
- B01D53/04—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 by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/047—Pressure swing adsorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
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- B01D2253/106—Silica or silicates
- B01D2253/108—Zeolites
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D2257/504—Carbon dioxide
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B01D53/02—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 by adsorption, e.g. preparative gas chromatography
- B01D53/04—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 by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/047—Pressure swing adsorption
- B01D53/0476—Vacuum pressure swing adsorption
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Separation Of Gases By Adsorption (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
Description
a)ガス流の総体積に対して15体積%~60体積%の二酸化炭素を含むガス流を供給する工程、
b)前記ガス流をゼオライト凝集体に通過させる工程、及び
c)CO2低減ガス流を回収する工程を少なくとも含み、
前記ゼオライト凝集体が、少なくとも1つのバインダーと少なくとも1つのゼオライトとを含み、0.02cm3・g-1~0.15cm3・g-1のメソ細孔容積と0.1~0.5、好ましくは0.15~0.45のメソ細孔容積率とを有する、方法に関する。
ゼオライト凝集体の化学分析
本発明の方法に使用可能なゼオライト複合体の元素化学分析は、当業者に知られている様々な分析技術によって実施し得る。これらの技術の中でも、例えば、ブルカー(Bruker)社によるTigerS8分光器の波長分散型分光器(WDXRF)における標準NF EN ISO 12677:2011に述べられているような蛍光X線化学分析の技術がある。
ゼオライト吸着剤材料のゼオライト含有量は、当業者に知られている方法によって、X線回折分析(DRx)によって求められる。この同定は、ブルカー(Bruker)社のDRX装置を用いて、実施できる。
スロットのサイズ(発散、拡散及び分析)=0.6mm
フィルタ:Ni
試料回転装置:15rpm-1
測定範囲:3°<2θ<50°
ステップ:0.02°
ステップごとのカウント時間:2秒
回折図形の解釈は、EVAソフトウェアを用いて得られ、ICDD PDF―2データベース(2011年公開)からゼオライトが同定される。
試料Bの高さ:1.59m
試料Cの高さ:1.49m
吸着筒に供給されるガス混合物の体積組成は、CO35%、CO235%、N210%及びH220%である。供給流速を、温度40℃及び圧力300kPaで、8NL.min-1及び16NL.min-1に設定する。
シリカゲルとゼオライト凝集体の違いを検討するために、試料A及び試料BのCO2総吸着容量を比較する。筒に供給されるガス混合物は、上記したとおりである。供給流速を、温度40℃及び圧力300kPaで、8NL.min-1に設定する。既に示されたように、各試料に同量の吸着剤379gを使用する。
試料B:1055秒
CO2体積濃度が0.1%に達する破過時間は、各試料において以下である。
試料B:747秒
これらの結果によって、同量では、試料B(本発明によるゼオライト凝集体)のCO2総吸着容量は、試料A(シリカゲル、比較例)に認められるCO2総吸着容量の2倍を超えることが明らかに示される。破過開始時に吸着を停止する場合、試料Bの性能は、試料Aの性能よりも約12倍良好である。
本実施例は、実施例1と同じ操作条件下で、シリカゲルと分子ふるいの違いを検討するために、試料A及び試料CのCO2の動的吸着容量を比較する。供給流速を、温度40℃及び圧力300kPaで、16NL.min-1に設定する。使用した各試料量は、379gである。
試料C:38秒
これらの結果によって、明らかに以下が示される。等量において試料C(本発明によるゼオライト凝集体)の性能が試料A(シリカゲル、比較例)よりも2.5倍良好である。これにより、同量の吸着剤を用いた場合、ゼオライト凝集体を使用することで、再生サイクル数が減少する可能性があるため、シリカゲルを用いた時よりも使用時間が長くなる。
本実施例は、実施例1と同じ操作条件下で、シリカゲルと分子ふるいの違いを検討するために、試料A及び試料CのCO2の動的吸着容量を比較する。供給流速を、温度40℃及び圧力300kPaで、16NL.min-1に設定する。使用した各試料量は、379gである。シリカゲル及びゼオライト凝集体の違いを検討するために、試料A及び試料Cそれぞれの再生が比較される。吸着筒に入るガス混合物の体積組成は、CO35%、CO235%、N210%及びH220%である。供給流速を、温度40℃及び圧力300kPaで、8NL.min-1に設定する。吸着剤量は各試料で同じであり、379gである。
試料C:40kPa
これらの結果によって、以下が明らかに示される。等量の吸着剤及び同一の吸着性能では、試料C(本発明のゼオライト凝集体)に必要な真空量は、試料A(シリカゲル、比較例)に必要な真空量の半分である。これにより、ゼオライト凝集体(試料C)の使用によって、再生中の操作費用が減少可能となる。
Claims (10)
- ガス流を脱二酸化炭素する方法であって、
a)ガス流の総体積に対して15体積%~60体積%の二酸化炭素(CO2)を含むガス流を供給する工程、
b)前記ガス流をゼオライト凝集体に通過させる工程、及び
c)CO2低減ガス流を回収する工程
を少なくとも含み、
前記ゼオライト凝集体が、少なくとも1つのバインダーと少なくとも1つのゼオライトとを含み、0.02cm3・g-1~0.15cm3・g-1のメソ細孔容積と0.1~0.5、好ましくは0.15~0.45のメソ細孔容積率とを有する、方法。 - 脱炭酸される前記ガス流が、前記ガス流の総体積に対して、15体積%~60体積%、好ましくは20体積%~50体積%、より好ましくは25体積%~40体積%の二酸化炭素を含む、請求項1に記載の方法。
- 脱炭酸される前記ガス流が、前記ガス流の総体積に対して、15体積%~60体積%、好ましくは20体積%~50体積%、より好ましくは25体積%~40体積%、さらに好ましくは約35体積%のCO2の含有量を有し、以下のガス:
前記ガス流の総体積に対して、概して20体積%~50体積%、より概して30体積%~45体積%であり、典型的に約40体積%である、一酸化炭素(CO)、
前記ガス流の総体積に対して、概して15体積%~25体積%であり、典型的に約20体積%である、水素(H2)、
前記ガス流の総体積に対して、概して5体積%~15体積%であり、典型的に約10体積%である、窒素(N2)及び/又はアルゴン(Ar)、
前記ガス流の総体積に対して、概して0.5体積%~50体積%、好ましくは1体積%~20体積%、さらにより好ましくは1体積%~10体積%、典型的に約1体積%~2体積%である、メタン(CH4)、
概して数ppm(体積で、すなわちppmv)から4体積%まで、典型的に約3体積%である、水(H2O)、
概して80ppmv~100ppmvである、硫化水素(H2S)
の1つ以上をさらに含む、請求項1又は2に記載の方法。 - 前記ゼオライト凝集体が、前記ゼオライト吸着剤の総重量に対して、1重量%~30重量%、好ましくは5重量%~20重量%の量のクレイバインダーで凝集したゼオライト結晶を含む、請求項1~3のいずれか一項に記載の方法。
- 前記ゼオライト凝集体の前記クレイバインダーが、繊維状マグネシウムクレイから選択される少なくとも1つのクレイを含む、請求項1~4のいずれか一項に記載の方法。
- 前記ゼオライト凝集体の前記少なくとも1つのゼオライトが、X、LSX、MSX及びYゼオライト及びそれらの混合物から選択されるフォージャサイト型ゼオライト結晶状のゼオライトである、請求項1~5のいずれか一項に記載の方法。
- 前記ゼオライト凝集体の前記少なくとも1つのゼオライトが、前記凝集体の総重量に対して9.0重量%を超える酸化物である酸化ナトリウム(Na2O)として表されるナトリウム含有量のナトリウム型で存在する結晶状ゼオライトである、請求項1~6のいずれか一項に記載の方法。
- 0℃~100℃、好ましくは0℃~80℃、さらに好ましくは10℃~60℃、典型的に20℃~50℃の温度、例えば周囲温度で実施される、請求項1~7のいずれか一項に記載の方法。
- 200kPa~400kPaの圧力、好ましくは約300kPaの圧力で実施される、請求項1~8のいずれか一項に記載の方法。
- 請求項1~7のいずれか一項に定義されるゼオライト凝集体の、ガス流を脱二酸化炭素するための利用。
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