CN113797709A - Microcrystalline rotating wheel zeolite molecular sieve for efficiently removing VOCs (volatile organic compounds) and preparation method thereof - Google Patents
Microcrystalline rotating wheel zeolite molecular sieve for efficiently removing VOCs (volatile organic compounds) and preparation method thereof Download PDFInfo
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- CN113797709A CN113797709A CN202111265493.8A CN202111265493A CN113797709A CN 113797709 A CN113797709 A CN 113797709A CN 202111265493 A CN202111265493 A CN 202111265493A CN 113797709 A CN113797709 A CN 113797709A
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- microcrystalline
- molecular sieve
- zeolite
- vocs
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- 239000010457 zeolite Substances 0.000 title claims abstract description 79
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 229910021536 Zeolite Inorganic materials 0.000 title claims abstract description 68
- 239000002808 molecular sieve Substances 0.000 title claims abstract description 51
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000001179 sorption measurement Methods 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 37
- 239000003463 adsorbent Substances 0.000 claims abstract description 34
- 239000013080 microcrystalline material Substances 0.000 claims abstract description 21
- 230000008929 regeneration Effects 0.000 claims abstract description 13
- 238000011069 regeneration method Methods 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 239000003054 catalyst Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000004927 clay Substances 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 239000012535 impurity Substances 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 12
- 239000010453 quartz Substances 0.000 claims description 12
- 238000007873 sieving Methods 0.000 claims description 11
- 238000004898 kneading Methods 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 9
- 239000002689 soil Substances 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 7
- 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 claims description 7
- 239000010433 feldspar Substances 0.000 claims description 7
- 239000013081 microcrystal Substances 0.000 claims description 7
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 7
- 239000013078 crystal Substances 0.000 claims description 6
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 6
- 238000012216 screening Methods 0.000 claims description 6
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 6
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 229910052680 mordenite Inorganic materials 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 239000005995 Aluminium silicate Substances 0.000 claims description 4
- 235000012211 aluminium silicate Nutrition 0.000 claims description 4
- 230000001376 precipitating effect Effects 0.000 claims description 4
- 238000002791 soaking Methods 0.000 claims description 4
- 239000002352 surface water Substances 0.000 claims description 4
- 230000032683 aging Effects 0.000 claims description 2
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 abstract description 6
- 231100000572 poisoning Toxicity 0.000 abstract description 4
- 230000000607 poisoning effect Effects 0.000 abstract description 4
- 229930192474 thiophene Natural products 0.000 abstract description 3
- 238000003795 desorption Methods 0.000 description 23
- 239000002994 raw material Substances 0.000 description 19
- 239000002912 waste gas Substances 0.000 description 16
- 239000007789 gas Substances 0.000 description 14
- 238000002156 mixing Methods 0.000 description 10
- 239000002002 slurry Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 239000010815 organic waste Substances 0.000 description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000007580 dry-mixing Methods 0.000 description 3
- 230000002209 hydrophobic effect Effects 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- HGINCPLSRVDWNT-UHFFFAOYSA-N Acrolein Chemical compound C=CC=O HGINCPLSRVDWNT-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound 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 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- 241000219782 Sesbania Species 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- JYIBXUUINYLWLR-UHFFFAOYSA-N aluminum;calcium;potassium;silicon;sodium;trihydrate Chemical compound O.O.O.[Na].[Al].[Si].[K].[Ca] JYIBXUUINYLWLR-UHFFFAOYSA-N 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 229910001603 clinoptilolite Inorganic materials 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000007723 die pressing method Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 description 2
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 2
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 2
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 125000001741 organic sulfur group Chemical group 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910052679 scolecite Inorganic materials 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000001308 synthesis method Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- 125000003625 D-valyl group Chemical group N[C@@H](C(=O)*)C(C)C 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- 229920000168 Microcrystalline cellulose Polymers 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 150000001448 anilines Chemical class 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000007084 catalytic combustion reaction Methods 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 150000008422 chlorobenzenes Chemical class 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 235000019813 microcrystalline cellulose Nutrition 0.000 description 1
- 239000008108 microcrystalline cellulose Substances 0.000 description 1
- 229940016286 microcrystalline cellulose Drugs 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000010826 pharmaceutical waste Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 125000003718 tetrahydrofuranyl group Chemical group 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 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
- B01D53/02—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
- B01D53/06—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 moving adsorbents, e.g. rotating beds
-
- 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
- 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
- B01D53/0454—Controlling adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- 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
- B01J20/16—Alumino-silicates
- B01J20/165—Natural alumino-silicates, e.g. zeolites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- 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
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28042—Shaped bodies; Monolithic structures
- B01J20/28045—Honeycomb or cellular structures; Solid foams or sponges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/106—Silica or silicates
- B01D2253/108—Zeolites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/702—Hydrocarbons
- B01D2257/7027—Aromatic hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Inorganic Chemistry (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention relates to a microcrystalline rotating wheel zeolite molecular sieve for efficiently removing VOCs (volatile organic compounds) and a preparation method thereof, belonging to the technical field of VOCs removal treatment. The microcrystalline runner zeolite molecular sieve comprises the following components in percentage by mass: 25-35% of microcrystalline material, 30-50% of natural zeolite material and 20-30% of mud making material, wherein the molecular sieve comprises an adsorption zone, a regeneration zone and a cooling zone, and solves the technical problems that in the prior art, thiophene is not ideal to be removed, and an adsorbent is easy to block, so that catalyst poisoning is easy to cause.
Description
Technical Field
The invention relates to the field of VOCs removal treatment, in particular to a microcrystalline rotating wheel zeolite molecular sieve for efficiently removing VOCs and a preparation method thereof.
Background
According to the requirements of national VOCs emission standards: the regulation of the volatile organic compounds unorganized emission control Standard: for the comprehensive emission of atmospheric pollutants, emission limit values of benzene, toluene, xylene, non-methane total hydrocarbons, acrylonitrile, acrolein, methanol, anilines, chlorobenzenes, vinyl chloride and the like are established. If the waste gas is directly discharged to the atmospheric environment, not only the ecological environment is damaged, but also the waste gas is extremely serious harm to human beings. Therefore, it is very important to remove the waste gas containing VOCs and attach importance to the loss of VOCs.
Zeolite is coated on a rotating wheel to be used as an adsorbent, or the zeolite is made into a rotating wheel shape to be adsorbed, according to a single adsorption principle, the zeolite can be generally used for a period of time, and if desorption, desorption and regeneration conditions can be realized, the long-time operation is difficult to insist on. Firstly, the area contact part of the zeolite runner is smaller; secondly, the rotating wheel is too solid, and the adsorption rate is very slow under the condition of rotating speed; thirdly, the desorbed impurities are inconvenient to recover; fourthly, the desorption of specific impurities is weak; fifthly, the regeneration condition has no self-control right; and sixthly, the treatment effect on the high-concentration VOCs is poor.
Disclosure of Invention
Based on the above, the invention aims to provide a preparation method of a high-efficiency microcrystalline molecular sieve catalyst for fine desulfurization, which solves the technical problems that in the prior art, thiophene is not ideal to be removed, and an adsorbent is easy to block, so that catalyst poisoning is easy to cause.
In order to solve the technical problems, the invention provides the following technical scheme:
the invention provides a microcrystalline rotating wheel zeolite molecular sieve for efficiently removing VOCs, which comprises the following components in percentage by mass: 25-35% of microcrystalline material, 30-50% of natural zeolite material and 20-30% of mud making material.
Preferably, the microcrystalline material comprises 40% of silicon carbide, 34% of quartz powder and 20% of white crystal powder by mass percent.
Preferably, the natural zeolite is one or more of Ca zeolite, clinoptilolite, mordenite.
Preferably, the ceramic pug comprises primary clay and secondary clay, wherein the primary clay is a natural kaolin comprising montmorillonite; the secondary clay includes quartz and feldspar.
Preferably, the ceramic making pug consists of 25 percent of kaolin, 25 percent of montmorillonite, 25 percent of quartz soil and 25 percent of feldspar soil in percentage by mass
A process for preparing the microcrystal rotary-wheel zeolite molecular sieve to remove VOCs includes dry sieving method and water sieving method,
the dry screening method comprises the steps of drying, crushing, removing impurities, adding water, uniformly stirring, kneading, vacuumizing, ageing, molding by pressing, drying by microwave and roasting at high temperature to obtain the honeycomb adsorbent.
The water sieving method comprises the steps of coarsely crushing a microcrystalline material, a natural zeolite material and a mud making material, soaking the crushed materials in water for 4-6 hours, stirring the materials into mud, sieving the mud, precipitating the mud, removing surface water, airing the mud to a proper hardness, kneading, vacuumizing, piling the mud, pulling blanks, molding by pressing, drying by microwaves and roasting at a high temperature to obtain the honeycomb adsorbent.
Preferably, the resulting catalyst comprises triangular, spherical porous and columnar single-pore shapes.
Compared with the prior art, the invention has the beneficial effects that:
the molecular sieve has good poison resistance and heat resistance through the exchange combination of the microcrystalline material and the zeolite, when VOCs with high concentration are treated, the adsorption, desorption and rotating wheels can be freely controlled, organic waste gas is introduced into an adsorption zone through an air blower, organic pollutants in the organic waste gas are basically adsorbed, and then the obtained purified gas is discharged after reaching the standard. And finally, rotating the adsorbent to a regeneration section, heating the adsorbent at a high-temperature air flow rate of more than 200 ℃, desorbing the VOCs and flowing out along with hot air, simultaneously regenerating the adsorbent, cooling the regenerated adsorbent to below 40 ℃ for more than 6 hours, and then returning the adsorbent to the adsorption zone to perform a new round of adsorption. Along with the cyclic rotation of the process flow, the adsorption period also bears repeated adsorption, desorption, regeneration and cooling, so that the organic waste gas is purified all the time; thereby solving the technical problems of unsatisfactory thiophene removal, easy blockage of the adsorbent and easy catalyst poisoning in the prior art.
The invention proposes:
the applicant proposes that zeolite film is coated on a rotating wheel to be used as an adsorbent or the zeolite is made into a rotating wheel shape to be adsorbed, according to a single adsorption principle, the zeolite film can be used for a period of time, and if desorption, desorption and regeneration conditions can be achieved, the long-term operation is difficult to persist. Firstly, the area contact part of the zeolite runner is smaller; secondly, the rotating wheel is too solid, and the adsorption rate is very slow under the condition of rotating speed; thirdly, the desorbed impurities are inconvenient to recover; fourthly, the desorption of specific impurities is weak; fifthly, the regeneration condition has no self-control right; sixthly, the treatment effect on the high-concentration VOCs is poor; seventh, catalytic combustion or high temperature incineration is combined to form a zeolite rotating wheel adsorption concentration + incineration technology, the principle of which comes from the removal of organic sulfur in the exhaust gas at high temperature.
The molecular sieve of the microcrystalline zeolite runner is an efficient honeycomb runner type or honeycomb type film-coated runner molecular sieve which is prepared by exchanging and combining a microcrystalline material and zeolite, has the characteristics of toxicity resistance and heat resistance, can be freely controlled in adsorption, desorption and runner, has the flow directions of adsorption airflow and desorption airflow which are opposite, can be simultaneously carried out, and can really concentrate high-air-volume low-concentration waste gas by the microcrystalline zeolite runner, and then burn the concentrated VOCs waste gas or adsorb and recover through the microcrystalline zeolite runner molecular sieve.
The microcrystalline runner molecular sieve device takes microcrystalline fibers as a base material, and is made into a honeycomb-shaped disc wheel-shaped system wheel surface coated with a high-silicon zeolite hydrophobic adsorbent. Microcrystalline zeolite runner adsorption concentration device: the main process route comprises a waste gas collecting and preprocessing system, a microcrystalline molecular sieve rotating wheel concentration absorption and desorption system, a cooling and drying regeneration system, an automatic control system, a safe discharge system and the like. The rotating wheel post-treatment process comprises a microcrystalline zeolite molecular sieve + RCO, a zeolite rotating wheel + RTO.
The microcrystalline zeolite rotating wheel of the present invention has a main body of a trihedral honeycomb type adsorption rotating wheel made of microcrystalline material, zeolite material, etc., and has the technological characteristics of three sections, namely an adsorption zone, a regeneration zone and a cooling zone.
The organic waste gas is introduced into an adsorption zone through a blower, organic pollutants in the organic waste gas are basically adsorbed, and then the obtained purified gas is discharged after reaching the standard. And finally, rotating the adsorbent to a regeneration section, heating the adsorbent at a high-temperature air flow rate of more than 200 ℃, desorbing the VOCs and flowing out along with hot air, simultaneously regenerating the adsorbent, cooling the regenerated adsorbent to below 40 ℃ for more than 6 hours, and then returning the adsorbent to the adsorption zone to perform a new round of adsorption. Along with the cyclic rotation of the process flow, the adsorption period also bears repeated adsorption, desorption, regeneration and cooling, and the organic waste gas is purified all the time.
The microcrystal rotary wheel zeolite molecular sieve continuously adsorbs and desorbs impurities of flue gas, then discharges clean tail gas into atmosphere by a system air extraction variable frequency fan 45KW, provides treatment capacity meeting the requirement of gas adapting to the surface area of zeolite by an adsorber, and rotates at the rotating speed of 4.5-6.5 per hour to reasonably adapt to the rotating speed and realize adsorption balance.
Concentrating and saturating VOCs into a zeolite section, desorbing the VOCs through heat flow provided by a heat exchanger at 180-220 ℃, rotating the VOCs to a cooling area after desorption is completed, blowing and cooling the VOCs to about 25 ℃ through normal-temperature air, and rotating the VOCs to an adsorption concentration area, wherein the concentration ratio reaches 20: 1 or so, the original VOCs waste gas with high air volume and low concentration is converted into the waste gas with low air volume and high concentration, and the standard requirements of centralized recovery, treatment and discharge are facilitated.
The main raw materials of the microcrystalline cellular zeolite molecular sieve are as follows: silicon carbide, microcrystalline cellulose white crystal powder, natural zeolite and SiO2、Al2O3And alkali metals, etc. The molecular sieve has certain hydrophobic property, uniform micropore distribution, inner pore volume accounting for more than 55% of the total volume, and specific surface area larger than 350-2(ii)/g; the structure and the process composition effect are obvious. Has the characteristics of high temperature resistance, non-flammability, good thermal stability and hydrothermal stability.
The product is widely applied to: various processes such as spraying, printing, semiconductors, liquid crystals, and chemical processes; the application and treatment range is wider: such as benzene (C)6H6) Toluene (C)7H8) Xylene (C)8H10) Styrene (C)8H8) Hexane (C)6H14) Cyclohexane (C)6H12) Butanone (C)4H8O), methyl isobutyl ketone (C)6H12O), acetone (C)3H6O), ethyl acetate (CHO), methanol (CH)3OH), ethanol (C)2H5OH), propanol (C)3H7OH), butanol (C)4H9OH)、NMP(C5H9NO)、THF(C4H8O)
The invention has obvious process advantages, the microcrystalline material can resist high temperature of 1300 ℃ and low temperature of-150 ℃, the process reaction temperature is flexible, and the microcrystalline material can be selected at 300 ℃ and 500 ℃. The adsorbing material of the invention is mainly composed of microcrystal and zeolite (without adding inflammable materials such as activated carbon and the like), can not self-ignite, has high safety times, and has the integral removal rate of VOCs higher than 98%.
The microcrystalline zeolite rotating wheel is suitable for: the waste gas treatment of chemical plants, the waste gas of paint, pharmaceutical waste gas, the waste gas of electronic factories, the waste gas of electric power generation, the waste gas of sewage, the waste gas of printing, the waste gas of coating and other organic waste gases.
1. The preparation material of the microcrystalline zeolite rotating wheel is a microcrystalline zeolite rotating wheel which is prepared by high-temperature sintering and consists of a ceramic material, a microcrystalline material, natural zeolite fibers and the like.
2. The material proportion of the runner is as follows: 20% of ceramic material, 30% of microcrystalline material and 50% of natural zeolite material, and preparing the honeycomb circular runner molecular sieve by using a template.
3. The honeycomb wheel is divided into two sections: an adsorption section and a desorption section are respectively arranged. The heat recovery temperature can be 520 ℃ and 710 ℃, VOCs are combusted or clean air is exhausted after oxidation.
The microcrystalline zeolite rotary wheel molecular sieve disclosed by the invention makes up the problem that the adsorption and desorption efficiency of the traditional molecular sieve is too low. The traditional process mainly comprises a hydrothermal method, a high-temperature synthesis method, a steam gas phase system synthesis method and the like. The three high temperature resistant methods, regardless of the adsorbent, cause the adsorbent to generate unstable activity factors when the adsorption temperature is higher, so that some chemical impurities such as organic sulfur are adsorbed, the molecular diameter of various molecules is expanded in high temperature boiling, and the adsorbed molecular impurities are difficult to capture by the runner. If the three high temperature conditions are changed into the hydrophobic high-silicon zeolite, the selective adsorption can not be realized. The multi-party experiment proves that the microcrystalline zeolite rotary wheel adsorbent can be completely realized only by the microcrystalline zeolite rotary wheel adsorbent, and the microcrystalline zeolite rotary wheel adsorbent is not afraid of high and low temperatures and acid poisoning and can resist 5.3 percent of grease impurities because the microcrystalline zeolite rotary wheel adsorbent has stronger stability at high and low temperatures.
The adsorbing material used in the rotating wheel of the invention is inorganic honeycomb medium silicon micro-crystalline zeolite, so the rotating wheel is called a micro-crystalline zeolite molecular sieve rotating wheel, and has an adsorption rate of 45%, a hydrophobicity of 45% and a desorption rate of 10%. When the rotating wheel is operated for 6-8 revolutions per h, 12 percent of VOCs are not completely adsorbed, and the adsorption rate of the VOCs reaches 98 percent according to 4-5 revolutions per h. The concentration of IPA of a section of inflow is 200PPM, the desorption temperature of the inflow is 200-.
The microcrystalline zeolite rotating wheel has the technological process that the concentration of IPA in waste gas is more than 200ppm, the desorption temperature is more than 180 ℃, VOCs are concentrated by 13 times, the air inlet temperature is 11g/kg, the regeneration flow rate is 1.75m/s, the rotating speed is 3.3-4.3r/h, and the removal rate of the microcrystalline rotating wheel can reach more than 98% between 40-80% of relative humidity.
Too fast or too slow a wheel is detrimental to the adsorption of the adsorbent. Due to the over-high or over-low temperature, the runner obtains heat energy in the desorption area, and the VOCs adsorbed on the microcrystalline zeolite runner are desorbed completely under the condition of high heat energy, so that after entering the adsorption area, when the desorption temperature is between 240 ℃ and 260 ℃, the VOCs removal rate of the runner is lower than the removal effect when the VOCs removal rate is lower than 200 ℃ and 220 ℃.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
The features and properties of the present invention are described in further detail below with reference to examples.
Example 1:
the microcrystalline zeolite rotating wheel molecular sieve of the invention is composed of 30% of microcrystalline material, 50% of natural zeolite material and 20% of ceramic making pug: the microcrystalline material is composed of silicon carbide, quartz powder, white crystal powder and the like, and belongs to one or more of natural raw materials, natural zeolite, Ca zeolite, clinoptilolite and mordenite.
The pottery clay belongs to primary clay and secondary clay. The primary clay is a natural kaolin and is composed of montmorillonite. The flexibility is good, and the viscosity is high. The secondary clay is composed of quartz, feldspar, etc., and has good plasticity and low roasting temperature, which is almost the same as the rise and fall of the zeolite temperature. However, the material for manufacturing the honeycomb rotating wheel is very complicated, otherwise, the bonding is not good, and the honeycomb rotating wheel is easy to crack, break and fall off when the honeycomb rotating wheel adsorbs the rotating wheel, so the material adopts the following two manufacturing modes in the mixing process:
1. dry screening method:
firstly, the materials are dried in the sun, crushed, purified, added with water, stirred evenly, kneaded, vacuumized, aged, molded, microwave-dried and roasted at high temperature to prepare the honeycomb adsorbent.
2. A water sieving method:
firstly, coarsely crushing the materials, soaking the materials in water for 4-6h, stirring the materials into slurry, sieving the slurry, precipitating the slurry, removing surface water, airing the slurry to proper hardness, kneading, vacuumizing, stacking the slurry, pulling blanks, molding by pressing, drying by microwave, and roasting at high temperature to obtain the honeycomb adsorbent.
The specification of the microcrystalline honeycomb molecular sieve of the invention has 5 varieties, 100 multiplied by 20mm, 100 multiplied by 50mm, 50 multiplied by 20mm triangle and spherical porous shape. A columnar single-hole shape, etc.
The product test of example 1 is compared as follows:
micro crystal zeolite runner honeycomb molecular sieve adsorption and desorption concentration device contrast
Example 2:
the microcrystalline zeolite rotating wheel molecular sieve is prepared by mixing 25% of microcrystalline materials, 50% of natural zeolite materials and 25% of ceramic making pug. The natural microcrystalline material is composed of one or three of silicon carbide, quartz powder, white crystal powder and the like. The natural zeolite is one or more of scolecite, clinoptilolite, mordenite, etc. The pottery clay material is one or more of kaolin, montmorillonite, quartz soil, feldspar soil, etc. Other auxiliary adhesives comprise one or more of silicon solution, sodium hydroxypropyl methylcellulose, SG sesbania gum and the like.
The above materials must be strictly related: firstly, the precise amount of the material, the proportion of the auxiliary material and the water consumption for adding are calculated. The quality and service life of the molecular sieve are completely determined by the right matching amount. The raw material quality, the manufacturing process are fine, the roasting temperature is reasonable, otherwise, the molecular sieve used on the rotating wheel has a poor effect, but the molecular sieve cracks and falls powder, and can penetrate through the molecular sieve at any time in the adsorption process. Once other conditions are found, the unit must be shut down, and the adsorbent material of the process has no remedy but is replaced completely. Therefore, the process conditions for producing the rotary wheel molecular sieve are very harsh. The preparation conditions of the rotary wheel molecular sieve are similar to those of example 1, and the mixing method is slightly different, which is described in detail below.
1. Dry mixing method:
firstly, accurately weighing various raw materials, sequentially putting the raw materials into a conical mixer, and firstly putting dry microcrystalline materials, dry zeolite materials and dry adhesives. And putting the raw materials once, mixing for 5min, completely putting the raw materials, mixing for 30min, screening and removing impurities of the mixed raw materials by a cloth bag dustproof and waterproof plastic barrel, then putting the raw materials into a kneading machine, kneading for 50min, and then carrying out vacuum, blank drawing, die pressing molding, microwave drying and high-temperature roasting to obtain the honeycomb adsorbent.
2. A water mixing method:
screening various raw materials, removing impurities such as caking and the like, accurately weighing, sequentially putting the raw materials into a kneader, uniformly kneading the raw materials, adding tap water (the weight ratio of water added in summer and autumn is 4-6% higher than that in winter and spring) according to the total weight of the raw materials, operating the kneader for 1 h, and then carrying out vacuum, blank drawing, die-pressing molding, microwave drying and high-temperature roasting to obtain the honeycomb adsorbent.
The specification of the microcrystalline honeycomb molecular sieve of the invention has 5 varieties, 100 multiplied by 50mm, 100 multiplied by 20mm, 50 multiplied by 20mm triangle and spherical porous shape. A columnar single-hole shape, etc.
The product test of example 2 is compared as follows:
micro crystal zeolite runner honeycomb molecular sieve adsorption and desorption concentration device contrast
Example 3:
the microcrystalline zeolite rotating wheel molecular sieve is prepared by mixing 30% of microcrystalline materials, 40% of natural zeolite materials and 30% of ceramic making pug. The natural microcrystalline material consists of 40 percent of silicon carbide component, 34 percent of quartz powder material and 20 percent of white crystal powder material, and one or three of the materials can be selected. The natural zeolite is composed of 35% of scolecite, 30% of clinoptilolite and 35% of mordenite, and one or three of them can be selected. The pottery clay consists of 25% of kaolin, 25% of montmorillonite, 25% of quartz soil and 25% of feldspar soil, and one or three of the above materials can be selected. Other auxiliary adhesives comprise one or more of 16 percent of silicon solution, 4.5 percent of hydroxypropyl methyl cellulose sodium and 3.0 percent of SG sesbania gum.
The microcrystalline zeolite rotary wheel molecular sieve has the advantages that the selection of main materials is very strict, and each batch of materials must be sieved and weighed after the supervision of auxiliary materials is passed; any impurity is not allowed, the shortage of weight is not allowed, kneaded raw materials are not left overnight, the auxiliary materials are weighed after being uncovered, the auxiliary materials are weighed and do not contact with air, and the auxiliary materials are not stored beside a water source. Only with this diligence is the best honeycomb or perforated high end molecular sieve produced. The preparation process of the microcrystalline zeolite rotary wheel molecular sieve is basically similar to that of the preparation process of the microcrystalline zeolite rotary wheel molecular sieve in the embodiment 1 and the embodiment 2, generally, the preparation process of raw materials is slightly different in the proportioning process, and the key point is to discuss the optimal formula of batch production.
The molecular sieve, dry sieve method and water sieve method of the invention are taken as the first research direction. The second research direction is dry mixing method and water mixing method. The manufacturing process as the third stage also summarizes the effects accumulated in the first and second stages as follows:
1. dry sieve mixing method:
the main raw materials are firstly dried until the water content is less than 10%, crushed, screened and weighed, sequentially put into a conical mixer for dry mixing for 30min, then added with tap water with accurate measurement and continuously mixed for 30min, the mixed raw materials are discharged and transferred into a kneader, and then the weighed various adhesives are put together for kneading for 45min, and then the honeycomb adsorbent is prepared through vacuum, blank drawing, die molding, microwave drying and high-temperature roasting.
2. A water sieve mixing method:
the preparation method comprises the following steps of coarsely crushing and screening various prepared raw materials, putting the raw materials into a tap water container, soaking for 4-6 hours, stirring to form slurry, sieving the slurry, precipitating the slurry, removing surface water, airing to proper hardness, kneading, vacuumizing, stacking the slurry, pulling blanks, molding by pressing, drying by microwaves, and roasting at high temperature to obtain the microcrystalline honeycomb molecular sieve adsorbent.
The specification of the microcrystalline zeolite honeycomb molecular sieve of the invention is 100 multiplied by 50mm, 100 multiplied by 20mm, 50 multiplied by 20mm triangle and spherical porous shape. A columnar single-hole shape, etc.
The product test of example 3 is compared as follows:
micro crystal zeolite runner honeycomb molecular sieve adsorption and desorption concentration device contrast
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. The microcrystalline rotating wheel zeolite molecular sieve for efficiently removing VOCs is characterized by comprising the following components in percentage by mass: 25-35% of microcrystalline material, 30-50% of natural zeolite material and 20-30% of mud making material, wherein the molecular sieve comprises an adsorption zone, a regeneration zone and a cooling zone.
2. The rotating-wheel zeolite molecular sieve based on microcrystals for efficiently removing VOCs according to claim 1, wherein the microcrystalline material comprises 40% by mass of silicon carbide, 34% by mass of quartz powder and 20% by mass of white crystal powder.
3. The micro-crystalline runner zeolite molecular sieve with high removal efficiency of VOCs of claim 1, wherein the natural zeolite is one or more of Ca zeolite, clinoptilolite and mordenite.
4. The rotating microcrystalline wheel zeolite molecular sieve for the efficient removal of VOCs as claimed in claim 1, wherein the ceramic preparation material comprises primary clay and secondary clay, said primary clay comprising montmorillonite; the secondary clay includes quartz and feldspar.
5. The micro-crystalline runner zeolite molecular sieve capable of efficiently removing VOCs according to claim 4, wherein the ceramic preparation pug comprises 25% by mass of kaolin, 25% by mass of montmorillonite, 25% by mass of quartz soil and 25% by mass of feldspar soil.
6. A method for preparing the microcrystalline runner zeolite molecular sieve for efficiently removing VOCs according to any one of claims 1-5, which comprises a dry sieving method and a water sieving method,
the dry screening method comprises the steps of drying, crushing, removing impurities, adding water, uniformly stirring, kneading, vacuumizing, ageing, molding by pressing, drying by microwave and roasting at high temperature to obtain the honeycomb adsorbent.
7. The method of claim 6, wherein the water sieving process comprises the steps of coarsely crushing the microcrystalline material, the natural zeolite material and the mud making material, soaking the crushed materials in water for 4-6 hours, stirring the materials to form mud, sieving the mud, precipitating the mud, removing surface water, airing the mud to a proper hardness, kneading, vacuumizing, mud stacking, blank drawing, die molding, microwave drying and high-temperature roasting to obtain the honeycomb adsorbent.
8. The method of claim 6, wherein the catalyst is a adsorption rotary wheel of trihedral honeycomb type.
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