CN115608326B - Adsorbent for removing NOx under high-humidity condition of flue gas and preparation method and application thereof - Google Patents
Adsorbent for removing NOx under high-humidity condition of flue gas and preparation method and application thereof Download PDFInfo
- Publication number
- CN115608326B CN115608326B CN202110802900.8A CN202110802900A CN115608326B CN 115608326 B CN115608326 B CN 115608326B CN 202110802900 A CN202110802900 A CN 202110802900A CN 115608326 B CN115608326 B CN 115608326B
- Authority
- CN
- China
- Prior art keywords
- flue gas
- adsorbent
- molecular sieve
- stirring
- removing nox
- 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.)
- Active
Links
- 239000003463 adsorbent Substances 0.000 title claims abstract description 37
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 239000003546 flue gas Substances 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000002808 molecular sieve Substances 0.000 claims abstract description 33
- 238000001179 sorption measurement Methods 0.000 claims abstract description 21
- 239000011258 core-shell material Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 13
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 6
- 229920000620 organic polymer Polymers 0.000 claims abstract description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 102
- 238000010438 heat treatment Methods 0.000 claims description 46
- 239000008240 homogeneous mixture Substances 0.000 claims description 36
- 238000003756 stirring Methods 0.000 claims description 30
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims description 28
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 26
- -1 polyethylene Polymers 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 238000005406 washing Methods 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 11
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 9
- JCVQKRGIASEUKR-UHFFFAOYSA-N triethoxy(phenyl)silane Chemical compound CCO[Si](OCC)(OCC)C1=CC=CC=C1 JCVQKRGIASEUKR-UHFFFAOYSA-N 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 238000009210 therapy by ultrasound Methods 0.000 claims description 8
- 229910001960 metal nitrate Inorganic materials 0.000 claims description 7
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 229920000371 poly(diallyldimethylammonium chloride) polymer Polymers 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052684 Cerium Inorganic materials 0.000 claims description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910002651 NO3 Inorganic materials 0.000 claims description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 239000011651 chromium Substances 0.000 claims description 2
- 229910017052 cobalt Inorganic materials 0.000 claims description 2
- 239000010941 cobalt Substances 0.000 claims description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 238000005342 ion exchange Methods 0.000 claims description 2
- 229910052746 lanthanum Inorganic materials 0.000 claims description 2
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 239000002243 precursor Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 229920000428 triblock copolymer Polymers 0.000 claims description 2
- 229910052720 vanadium Inorganic materials 0.000 claims description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 229920001577 copolymer Polymers 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 19
- 238000005245 sintering Methods 0.000 abstract description 9
- 239000002131 composite material Substances 0.000 abstract description 4
- 238000009792 diffusion process Methods 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000004568 cement Substances 0.000 abstract description 2
- 239000000919 ceramic Substances 0.000 abstract description 2
- 238000004939 coking Methods 0.000 abstract description 2
- 229920006037 cross link polymer Polymers 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000011521 glass Substances 0.000 abstract description 2
- 238000001338 self-assembly Methods 0.000 abstract description 2
- 238000003786 synthesis reaction Methods 0.000 abstract description 2
- 239000013335 mesoporous material Substances 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 239000008367 deionised water Substances 0.000 description 14
- 229910021641 deionized water Inorganic materials 0.000 description 14
- 229910001431 copper ion Inorganic materials 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 8
- 229910021536 Zeolite Inorganic materials 0.000 description 7
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 7
- 239000010457 zeolite Substances 0.000 description 7
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- IJOOHPMOJXWVHK-UHFFFAOYSA-N chlorotrimethylsilane Chemical compound C[Si](C)(C)Cl IJOOHPMOJXWVHK-UHFFFAOYSA-N 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 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 3
- 238000001354 calcination Methods 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- FQEKAFQSVPLXON-UHFFFAOYSA-N butyl(trichloro)silane Chemical compound CCCC[Si](Cl)(Cl)Cl FQEKAFQSVPLXON-UHFFFAOYSA-N 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- MSRJTTSHWYDFIU-UHFFFAOYSA-N octyltriethoxysilane Chemical compound CCCCCCCC[Si](OCC)(OCC)OCC MSRJTTSHWYDFIU-UHFFFAOYSA-N 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- GFNGCDBZVSLSFT-UHFFFAOYSA-N titanium vanadium Chemical compound [Ti].[V] GFNGCDBZVSLSFT-UHFFFAOYSA-N 0.000 description 2
- HQYALQRYBUJWDH-UHFFFAOYSA-N trimethoxy(propyl)silane Chemical compound CCC[Si](OC)(OC)OC HQYALQRYBUJWDH-UHFFFAOYSA-N 0.000 description 2
- 239000005051 trimethylchlorosilane Substances 0.000 description 2
- 150000000703 Cerium Chemical class 0.000 description 1
- 229910016978 MnOx Inorganic materials 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002696 manganese Chemical class 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 239000011824 nuclear material Substances 0.000 description 1
- 238000000643 oven drying Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000004729 solvothermal method Methods 0.000 description 1
- WKXHZKXPFJNBIY-UHFFFAOYSA-N titanium tungsten vanadium Chemical compound [Ti][W][V] WKXHZKXPFJNBIY-UHFFFAOYSA-N 0.000 description 1
- 238000001132 ultrasonic dispersion Methods 0.000 description 1
Classifications
-
- 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
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
-
- 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
-
- 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
- B01J20/18—Synthetic zeolitic molecular sieves
-
- 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
- B01J20/28016—Particle form
- B01J20/28021—Hollow particles, e.g. hollow spheres, microspheres or cenospheres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
Abstract
The invention discloses an adsorbent for removing NOx under a high-humidity condition facing flue gas, and a preparation method and application thereof. The invention has reasonable structure, takes different structural molecular sieves and the like as the inner cores of the adsorbents, takes organic polymers as the outer shells of the adsorbents to form a core-shell coated hydrophobic material, and takes an intermediate medium material as a bridge of the composite molecular sieve and the high cross-linked polymer to carry out self-assembly synthesis, so that the material has more stable hydrothermal stability than a mesoporous material, high material diffusion coefficient, obvious water resistance effect, high adsorption capacity, cheap raw materials, simple preparation process and low cost, and can be produced in batches; the adsorbent of the invention has wide application range and can be applied to flue gas treatment in fixed source industries such as glass, ceramics, cement, coking, sintering and the like.
Description
Technical Field
The invention relates to the technical field of flue gas treatment, in particular to an adsorbent for removing NOx under a high-humidity flue gas condition, and a preparation method and application thereof.
Background
Since 2017, the major pollutant emissions from the steel industry have exceeded the power industry, becoming the largest pollutant emission source for the industrial sector. In 2017, the letter of opinion on 20 national pollutant emission standards modification standards (solicit opinion manuscripts) about soliciting the emission standards of atmospheric pollutants in the steel sintering and pellet industry prescribes the sintering process NO x The modified value of the specific emission limit of (2) is 100mg/m 3 The method comprises the steps of carrying out a first treatment on the surface of the In 2018, the project of ultra-low emission modification work (solicited opinion manuscript) of iron and steel enterprises; five departments such as the ecological environment department in 2019 jointly issue opinion on ultra-low emission of the advanced implementation iron and steel industry, and require a sintering process NO x The discharge concentration is reduced to 50mg/m 3 . Aiming at the improvement of the ultra-low emission standard requirement, the treatment of pollutants such as NOx and the like in the steel industry is urgent.
The steel sintering flue gas has the characteristics of high moisture content (10-14%), high oxygen content (10-18%), low flue gas temperature (100-180 ℃) and complex components. At present, flue gas denitration mainly adopts a Selective Catalytic Reduction (SCR) technology and an adsorption technology. The SCR technology mainly adopts vanadium-titanium (V-Ti) or vanadium-tungsten-titanium (V-W-Ti) catalyst, but in the catalytic process, NH is used 3 The excessive use of the reducing agent can cause the problems of ammonia escape and the like, which is contrary to the original purposes of energy conservation, emission reduction and ecological civilization construction. The adsorption method has high efficiency, can recycle, purify and separate NO and NO with high purity commercial value 2 Chemical and other advantages, and has great application market prospect.
The publication No. CN108479695B, named as the preparation method of the molecular sieve/alumina core-shell structure simultaneous desulfurization and denitrification adsorbent, discloses a preparation method of the molecular sieve/alumina core-shell structure simultaneous desulfurization and denitrification adsorbent. The method comprises the steps of using pore channel characteristics of a molecular sieve as a nuclear material, using mesoporous aluminum oxide as a shell, and dispersing a certain amount of molecular sieve nano particles into a solution for preparing the mesoporous aluminum oxide by ultrasonic dispersion to prepare the adsorbent with a core-shell structure and a specific pore structure. The technical scheme realizes large adsorption capacity and stable cycle performance, but the strong hydrophilicity of the alumina and the molecular sieve can not verify whether the actual sintering flue gas requirement is met.
The publication number of CN102335604B, named as an SCR low-temperature denitration catalyst with a nano core-shell structure and a preparation method thereof, discloses an SCR low-temperature denitration catalyst with a nano core-shell structure and a preparation method thereof, and a MnOx/CeO2@CNTs nano core-shell structure with high dispersion of active components and high surface area is obtained by a one-step chemical solvothermal method through Carbon Nanotubes (CNTs), manganese salt and cerium salt. Although the preparation method has the characteristics of high dispersion of active components, high specific surface area and the like, the preparation method has higher production cost, and cannot meet the actual industrial mass production requirement from the perspective of the economic cost of the product.
The publication No. CN111744478A, named Gao Jiekong-ratio composite core-shell structure multiphase nickel-loaded activated carbon material, discloses a high mesoporous-ratio composite core-shell structure multiphase nickel-loaded activated carbon material which also has the problems of high production cost and the like, and is unfavorable for NOx and H due to analysis from the aspects of adsorption dynamics and diffusion dynamics 2 Diffusion and adsorption of O in gas molecules within molecular sieves.
The concentration of water vapor in the sintering flue gas is high, the water vapor can form competitive adsorption with complex flue gas such as NOx in the sintering flue gas, occupy the active site of the adsorbent and coagulate and plug holes, so that the material is deactivated. Therefore, development of a NOx adsorbent having a high adsorption amount and excellent water resistance and stability at low temperatures is indispensable.
Disclosure of Invention
Aiming at the defects, the invention aims to provide an adsorbent for removing NOx under the high-humidity condition of flue gas, and a preparation method and application thereof.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
the adsorbent for removing NOx under the high-humidity condition facing the flue gas comprises an adsorption inner core and a core-shell coated hydrophobic material which is coated on the adsorption inner core and is formed by organic polymers, wherein the adsorption inner core comprises at least two molecular sieves with different configurations. The particle size of the adsorbent is 20-60 meshes.
As a preferred embodiment of the invention, the molecular sieve is a mixture of two of ZSM-5 and MOR, CHA, beta, LTA, FAU. Preferably, the molecular sieve is any one of ZSM-5, MOR and CHA according to the mass ratio of 1-5: 1, mixing.
As a preferred embodiment of the present invention, the organic polymer is one of Trimethylchlorosilane (TMCS), n-Octyltriethoxysilane (OTS), hexamethyldisilazane (HMDS), propyltrimethoxysilane (PTMS), and Butyltrichlorosilane (BTS).
As a preferable scheme of the invention, the intermediate medium of the adsorption core and the core-shell coating type hydrophobic material is one or more of polydiallyl dimethyl ammonium chloride (PDDA), phenyl triethoxysilane, cetyl Trimethyl Ammonium Bromide (CTAB) and polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer (P-123).
The preparation method of the adsorbent for removing NOx under the high-humidity condition facing the flue gas comprises the following steps:
(1) Adding at least two molecular sieves with different configurations into a nitrate solution for ion exchange to obtain a mixed metal cation modified molecular sieve; specifically, if metal nitrate is used as a precursor solution, preparing a metal nitrate solution with a concentration of 2wt% in 100mL of deionized water; two different configurations of molecular sieves were added to the metal nitrate solution, as the mass ratio 3: adding the ZSM-5 molecular sieve and MOR mixed molecular sieve of the formula 1 into a metal nitrate solution; stirring for 10-14 h, preferably 12h on a constant temperature magnetic stirrer at a rotating speed of 300-500 r/min, preferably 400r/min to obtain powder; washing, filtering and drying the powder overnight at 80 ℃ to obtain a sample; placing the sample in a heating furnace, such as a muffle furnace, heating to 250-270 ℃ at a heating rate of 5 ℃/min, and keeping the temperature for 1-2 h, preferably at 260 ℃ for 1h; then heating to 520-570 ℃ at a heating rate of 10 ℃/min for 3-5 h, preferably at 550 ℃ for 4h, so as to prepare the mixed metal cation modified molecular sieve;
(2) 1.4-3.2 g of phenyltriethoxysilane is dissolved in 50-150 mL of dimethylformamide solution (DMF), then mixed metal cation modified molecular sieve is added, and ultrasonic treatment is carried out for 15-25 min, thus obtaining a homogeneous mixture A;
(3) Adding 1.5-4 g of styrene (St) into dimethylformamide solution (DMF), then adding 12.2-16.3 g of Divinylbenzene (DVB) and stirring and mixing for 20-40 min to obtain a homogeneous mixture B;
(4) Dropwise adding the homogeneous mixture B into the homogeneous mixture A according to the mass ratio of 5-10: 1, mixing and stirring for 20-40 min to obtain a mixture C;
(5) Adding 0.1-0.5 g of azodiisobutyronitrile into the mixture C for stirring, wherein the stirring temperature is 50-70 ℃, the stirring speed is 450-550 r/min, and the required adsorbent for removing NOx under the high-humidity condition facing the flue gas is prepared by controlling the stirring time.
As a preferable scheme of the invention, the metal elements of the mixed metal cation modified molecular sieve are B group elements and/or VIII group elements, wherein the B group elements comprise one or more than two of copper, zinc, manganese, chromium, vanadium, titanium, lanthanum and cerium elements; the VIII element comprises one or a mixture of two of iron and cobalt.
The adsorbent for removing NOx under the high-humidity condition facing the flue gas is applied to the flue gas with the moisture content of 10-14% and the oxygen content of 10-18% for adsorbing NOx, such as the flue gas treatment in the industries of glass, ceramics, cement, coking, sintering and other fixed sources.
The beneficial effects of the invention are as follows: the invention has reasonable structure, takes different molecular sieves and the like as the inner cores of the adsorbents, takes organic polymers as the outer shells of the adsorbents to form a core-shell coated hydrophobic material, and takes an intermediate medium material as a bridge of the composite molecular sieve and the high cross-linked polymer to carry out self-assembly synthesis.
The invention will be further described with reference to the drawings and examples.
Drawings
FIG. 1 is a schematic diagram of the adsorption performance of an embodiment of the present invention.
Detailed Description
The following detailed description of the invention is provided in connection with the accompanying drawings that are presented to illustrate the invention and not to limit the scope thereof. In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Example 1:
according to the mass ratio of 1:1 mechanically and physically mixing ZSM-5 and MOR mixed molecular sieve, adding Cu (NO) with concentration of 2wt% 3 ) 2 The solution was stirred in 100mL of deionized water at 400r/min for 12h on a constant temperature magnetic stirrer. Washing, filtering, oven drying at 80deg.C overnight, placing the sample in a muffle furnace, heating to 260deg.C at a heating rate of 5deg.C/min, and maintaining for 1 hrThen the temperature is raised to 550 ℃ at a heating rate of 10 ℃/min and is kept for 4 hours. Thus obtaining the mixed copper ion modified molecular sieve; 2.4g of phenyltriethoxysilane is dissolved in 100mL of Dimethylformamide (DMF), added into the mixed copper ion modified molecular sieve zeolite solution, and subjected to ultrasonic treatment for 20min to obtain a homogeneous mixture A; 2g of styrene (St) are added to 100mL of Dimethylformamide (DMF), followed by 15g of Divinylbenzene (DVB) and stirring at 500r/min for 30min at a rotational speed to give a homogeneous mixture B. Then, the homogeneous mixture B was added dropwise to the homogeneous mixture A, and after stirring for 30min, 0.2g of Azobisisobutyronitrile (AIBN) was added and stirred at 60℃for 30min at 500r/min to give a mixture C. Finally, preparing the adsorbent for removing NOx under the high-humidity condition facing the flue gas by controlling the time.
Example 2:
according to the mass ratio of 2:1 mechanically and physically mixing ZSM-5 and MOR mixed molecular sieve, adding Cu (NO) with concentration of 2wt% 3 ) 2 The solution was stirred in 100mL of deionized water at 400r/min for 12h on a constant temperature magnetic stirrer. Washing, filtering, drying at 80 ℃ overnight, placing the sample in a muffle furnace, heating to 260 ℃ at a heating rate of 5 ℃/min for 1h, and then heating to 550 ℃ at a heating rate of 10 ℃/min for 4h. Thus obtaining the mixed copper ion modified molecular sieve; 2.4g of phenyltriethoxysilane is dissolved in 100mL of Dimethylformamide (DMF), added into the mixed copper ion modified molecular sieve zeolite solution, and subjected to ultrasonic treatment for 20min to obtain a homogeneous mixture A; 2g of styrene (St) are added to a certain 100mL of dimethylformamide solution (DMF), followed by 15g of Divinylbenzene (DVB) and stirring at 500r/min for 30min at a rotation speed, giving a homogeneous mixture B. Then, the homogeneous mixture B was added dropwise to the homogeneous mixture A, and after stirring for 30min, 0.2g of Azobisisobutyronitrile (AIBN) was added and stirred at 60℃for 30min at 500r/min to give a mixture C. Finally, preparing the adsorbent for removing NOx under the high-humidity condition facing the flue gas by controlling the time.
Example 3:
according to the mass ratio of 3:1 mechanically and physically mixing ZSM-5 and MOR mixed molecular sieve, adding Cu (NO) with concentration of 2wt% 3 ) 2 The solution was stirred in 100mL of deionized water at 400r/min for 12h on a constant temperature magnetic stirrer. Washing, filtering, drying at 80 ℃ overnight, placing the sample in a muffle furnace, heating to 260 ℃ at a heating rate of 5 ℃/min for 1h, and then heating to 550 ℃ at a heating rate of 10 ℃/min for 4h. Thus obtaining the mixed copper ion modified molecular sieve; 2.4g of phenyltriethoxysilane is dissolved in 100mL of Dimethylformamide (DMF), added into the mixed copper ion modified molecular sieve zeolite solution, and subjected to ultrasonic treatment for 20min to obtain a homogeneous mixture A; 2g of styrene (St) are added to a certain 100mL of dimethylformamide solution (DMF), followed by 15g of Divinylbenzene (DVB) and stirring at 500r/min for 30min at a rotation speed, giving a homogeneous mixture B. Then, the homogeneous mixture B was added dropwise to the homogeneous mixture A, and after stirring for 30min, 0.2g of Azobisisobutyronitrile (AIBN) was added and stirred at 60℃for 30min at a rotational speed of 500r/min to give a mixture C. Finally, preparing the adsorbent for removing NOx under the high-humidity condition facing the flue gas by controlling the time.
Example 4:
according to the mass ratio of 4:1 mechanically and physically mixing ZSM-5 and MOR mixed molecular sieve, adding Cu (NO) with concentration of 2wt% 3 ) 2 The solution was stirred in 100mL of deionized water at 400r/min for 12h on a constant temperature magnetic stirrer. Washing, filtering, drying at 80 ℃ overnight, placing the sample in a muffle furnace, heating to 260 ℃ at a heating rate of 5 ℃/min for 1h, and then heating to 550 ℃ at a heating rate of 10 ℃/min for 4h. Thus obtaining the mixed copper ion modified molecular sieve; 2.4g of phenyltriethoxysilane is dissolved in 100mL of Dimethylformamide (DMF), added into the copper ion mixed zeolite solution, and subjected to ultrasonic treatment for 20min to obtain a homogeneous mixture A; 2g of styrene (St) are added to a certain 100mL of dimethylformamide solution (DMF), followed by 15g of Divinylbenzene (DVB) and stirring at 500r/min for 30min at a rotation speed, giving a homogeneous mixture B. Then, the homogeneous mixture B was added dropwise to the homogeneous mixture A, and after stirring for 30min, 0.2g of Azobisisobutyronitrile (AIBN) was added and stirred at 60℃for 30min at a rotational speed of 500r/min to give a mixture C. Finally, preparing the adsorbent for removing NOx under the high-humidity condition facing the flue gas by controlling the time.
Example 5:
according to the mass ratio of 5:1 mechanically and physically mixing ZSM-5 and MOR mixed molecular sieve, adding Cu (NO) with concentration of 2wt% 3 ) 2 The solution was stirred in 100mL of deionized water at 400r/min for 12h on a constant temperature magnetic stirrer. Washing, filtering, drying at 80 ℃ overnight, placing the sample in a muffle furnace, heating to 260 ℃ at a heating rate of 5 ℃/min for 1h, and then heating to 550 ℃ at a heating rate of 10 ℃/min for 4h. Thus obtaining the mixed copper ion modified molecular sieve; 2.4g of phenyltriethoxysilane is dissolved in 100mL of Dimethylformamide (DMF), added into the mixed copper ion modified molecular sieve zeolite solution, and subjected to ultrasonic treatment for 20min to obtain a homogeneous mixture A; 2g of styrene (St) are added to 100mL of Dimethylformamide (DMF), followed by 15g of Divinylbenzene (DVB) and stirring at 500r/min for 30min at a rotational speed to give a homogeneous mixture B. Then, the homogeneous mixture B was added dropwise to the homogeneous mixture A, and after stirring for 30min, 0.2g of Azobisisobutyronitrile (AIBN) was added and stirred at 60℃for 30min at a rotational speed of 500r/min to give a mixture C. Finally, preparing the adsorbent for removing NOx under the high-humidity condition facing the flue gas by controlling the time.
Example 6:
according to the mass ratio of 3:1 mechanically and physically mixing ZSM-5 and MOR mixed molecular sieve, adding Cu (NO) with concentration of 2wt% 3 ) 2 The solution was stirred in 100mL of deionized water at 400r/min for 12h on a constant temperature magnetic stirrer. Washing, filtering, drying at 80 ℃ overnight, placing the sample in a muffle furnace, heating to 260 ℃ at a heating rate of 5 ℃/min for 1h, and then heating to 550 ℃ at a heating rate of 10 ℃/min for 4h. Thus obtaining the mixed copper ion modified molecular sieve; 1.08g of polydiallyl dimethyl ammonium chloride is dissolved in 100mL of Dimethylformamide (DMF), added into the mixed copper ion modified molecular sieve zeolite solution and subjected to ultrasonic treatment for 20min to obtain a homogeneous mixture A; 2g of styrene (St) are added to 100mL of Dimethylformamide (DMF), followed by 15g of Divinylbenzene (DVB) and stirring at 500r/min for 30min at a rotational speed to give a homogeneous mixture B. Then the homogeneous mixture B was added dropwise to the homogeneous mixture A, and after stirring for 30min, 0.2g of the mixture was addedNitrogen diisobutyronitrile (AIBN) is added and stirred at 60℃for 20min at a speed of 500r/min to give mixture C. Finally, preparing the adsorbent for removing NOx under the high-humidity condition facing the flue gas by controlling the time.
Example 7:
according to the mass ratio of 3:1 mechanically and physically mixing ZSM-5 and MOR mixed molecular sieve, adding Cu (NO) with concentration of 2wt% 3 ) 2 The solution was stirred in 100mL of deionized water at 400r/min for 12h on a constant temperature magnetic stirrer. Washing, filtering, drying at 80 ℃ overnight, placing the sample in a muffle furnace, heating to 260 ℃ at a heating rate of 5 ℃/min for 1h, and then heating to 550 ℃ at a heating rate of 10 ℃/min for 4h. Thus obtaining the mixed copper ion modified molecular sieve; 1.82g of cetyl trimethyl ammonium bromide is dissolved in 100mL of Dimethylformamide (DMF), added into mixed metal cation modified molecular sieve zeolite solution and treated by ultrasonic for 20min to obtain a homogeneous mixture A; 2g of styrene (St) are added to 100mL of Dimethylformamide (DMF), followed by 15g of Divinylbenzene (DVB) and stirring at 500r/min for 30min at a rotational speed to give a homogeneous mixture B. Then, the homogeneous mixture B was added dropwise to the homogeneous mixture A, and after stirring for 30min, 0.2g of Azobisisobutyronitrile (AIBN) was added and stirred at 60℃for 40min at 500r/min to give a mixture C. Finally, preparing the adsorbent for removing NOx under the high-humidity condition facing the flue gas by controlling the time.
Comparative example 1:
cu (NO) having a mass concentration of 2wt% 3 ) 2 Solution in 100mL deionized water, cu (NO 3 ) 2 The solution was immersed in 10g of MOR molecular sieve powder with a solid to liquid ratio of 1:10. stirring at 80 ℃ for 12 hours, washing and filtering the obtained powder by deionized water to be neutral, drying and calcining, placing the sample in a muffle furnace, heating to 260 ℃ at a heating rate of 10 ℃/min for 1 hour, and then heating to 550 ℃ at 10 ℃/min for 4 hours to obtain Cu-MOR.
Comparative example 2:
cu (NO) having a mass concentration of 2wt% 3 ) 2 Solution in 100mL deionized water, cu (NO 3 ) 2 Dipping the solution in 1In 0g ZSM-5 molecular sieve powder, the solid-liquid ratio is 1:10. stirring at 80 ℃ for 12 hours, washing and filtering the obtained powder by deionized water to be neutral, drying and calcining, placing a sample in a muffle furnace, heating to 260 ℃ at a heating rate of 10 ℃/min for 1 hour, and then heating to 550 ℃ at 10 ℃/min for 4 hours to obtain the Cu-ZSM-5.
Comparative example 3:
cu (NO) having a mass concentration of 2wt% 3 ) 2 Solution in 100mL deionized water, cu (NO 3 ) 2 The solution was immersed in 10g of CHA molecular sieve powder with a solid to liquid ratio of 1:10. stirring at 80 ℃ for 12 hours, washing and filtering the obtained powder by deionized water to be neutral, drying and calcining, placing a sample in a muffle furnace, heating to 260 ℃ at a heating rate of 10 ℃/min for 1 hour, and then heating to 550 ℃ at 10 ℃/min for 4 hours to obtain Cu-CHA.
The adsorbents prepared in examples 1 to 7 and comparative examples 1 to 3 were subjected to experimental comparison of adsorption performance. Specific adsorption performance parameters are shown in table 1.
TABLE 1
| Group of | NO x Adsorption quantity (mmol/g) | Penetration time(s) |
| Example 1 | 0.390 | 4295 |
| Example 2 | 0.402 | 4428 |
| Example 3 | 0.422 | 4650 |
| Example 4 | 0.377 | 4150 |
| Example 5 | 0.364 | 4000 |
| Example 6 | 0.314 | 3415 |
| Example 7 | 0.304 | 3560 |
| Comparative example 1 | 0.239 | 2380 |
| Comparative example 2 | 0.260 | 2860 |
| Comparative example 3 | 0.216 | 2640 |
The results in Table 1 show that the adsorbent for removing NOx under the high humidity condition of flue gas has the advantages of greatly improved adsorption capacity, obvious water resistance effect and good comprehensive performance compared with the adsorbent of the comparative example.
The above examples are only preferred embodiments of the present invention, and the present invention is not limited to the embodiments, but the technical solution of one of the above examples or the equivalent changes according to the above examples are all within the scope of the present invention.
Variations and modifications to the above would be obvious to persons skilled in the art to which the invention pertains from the foregoing description and teachings. Therefore, the invention is not limited to the specific embodiments disclosed and described above, but some modifications and changes of the invention should be also included in the scope of the claims of the invention. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not limit the present invention in any way. As described in the above embodiments of the present invention, other adsorbents obtained by the same or similar steps as well as methods for preparing and using the same are all within the scope of the present invention.
Claims (6)
1. The adsorbent for removing NOx under the high-humidity condition facing the flue gas is characterized by comprising an adsorption inner core and a core-shell coated hydrophobic material which is coated on the adsorption inner core and is formed by organic polymers, wherein the adsorption inner core comprises at least two molecular sieves with different configurations;
the molecular sieve is a mixture of two of ZSM-5 and MOR, CHA, beta, LTA, FAU;
the organic polymer is a styrene-divinylbenzene copolymer;
the intermediate medium of the adsorption inner core and the core-shell coated hydrophobic material is one or more of polydiallyl dimethyl ammonium chloride, phenyl triethoxysilane, cetyl trimethyl ammonium bromide and polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer;
the molecular sieve is a mixed metal cation modified molecular sieve, the metal elements of the mixed metal cation modified molecular sieve are B group elements and/or VIII group elements, and the B group elements comprise one or more than two of copper, zinc, manganese, chromium, vanadium, titanium, lanthanum and cerium elements; the VIII element comprises one or a mixture of two of iron and cobalt.
2. The adsorbent for removing NOx under high humidity conditions facing flue gas according to claim 1, wherein the molecular sieve is any one of ZSM-5, MOR and CHA according to a mass ratio of 1-5: 1, mixing.
3. A method for preparing the adsorbent for removing NOx under high humidity conditions facing flue gas according to any one of claims 1 to 2, comprising the steps of:
(1) Adding at least two molecular sieves with different configurations into a nitrate solution for ion exchange to obtain a mixed metal cation modified molecular sieve;
(2) 1.4-3.2 g of phenyltriethoxysilane is dissolved in 50-150 mL of dimethylformamide solution, and then mixed metal cation modified molecular sieve is added for ultrasonic treatment to obtain a homogeneous mixture A;
(3) Adding 1.5-4 g of styrene into a dimethylformamide solution, then adding 12.2-16.3 g of divinylbenzene, stirring and mixing for 20-40 min to obtain a homogeneous mixture B;
(4) Mixing the homogeneous mixture B and the homogeneous mixture A according to a mass ratio of 5-10: 1 stirring and mixing for 20-40 min to obtain a mixture C;
(5) Adding 0.1-0.5 g of azodiisobutyronitrile into the mixture C for stirring to prepare the adsorbent for removing NOx under the high-humidity condition facing the flue gas.
4. A method of preparation according to claim 3, wherein step (1) comprises the steps of:
(1.1) preparing a metal nitrate solution having a concentration of 2wt% using a metal nitrate as a precursor solution;
(1.2) adding two molecular sieves with different configurations into a metal nitrate solution, and stirring for 10-14 h on a constant-temperature magnetic stirrer at the rotating speed of 300-500 r/min to obtain powder;
(1.3) washing, filtering and drying the powder to obtain a sample;
(1.4) placing the sample into a heating furnace, heating to 250-270 ℃ at a heating rate of 5 ℃/min for 1-2 h, and then heating to 520-570 ℃ at a heating rate of 10 ℃/min for 3-5 h to obtain the mixed metal cation modified molecular sieve.
5. The process according to claim 3, wherein the stirring temperature in the step (5) is 50 to 70℃and the stirring speed is 450 to 550r/min.
6. The adsorbent for removing NOx under high humidity conditions of flue gas according to any one of claims 1 to 2 or the adsorbent for removing NOx under high humidity conditions of flue gas prepared by the preparation method according to any one of claims 3 to 5 is applied to flue gas with 10 to 14% of moisture content and 10 to 18% of oxygen content for adsorbing NOx.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110802900.8A CN115608326B (en) | 2021-07-15 | 2021-07-15 | Adsorbent for removing NOx under high-humidity condition of flue gas and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110802900.8A CN115608326B (en) | 2021-07-15 | 2021-07-15 | Adsorbent for removing NOx under high-humidity condition of flue gas and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115608326A CN115608326A (en) | 2023-01-17 |
| CN115608326B true CN115608326B (en) | 2024-02-02 |
Family
ID=84855477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110802900.8A Active CN115608326B (en) | 2021-07-15 | 2021-07-15 | Adsorbent for removing NOx under high-humidity condition of flue gas and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115608326B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2399670A1 (en) * | 2010-03-12 | 2011-12-28 | NGK Insulators, Ltd. | Zeolite structure and manufacturing method thereof |
| CN109759035A (en) * | 2019-03-12 | 2019-05-17 | 清华大学 | NOxAdsorbent and its preparation method and application |
| CN109794135A (en) * | 2019-01-15 | 2019-05-24 | 北京科技大学 | Flue gas multiple pollutant adsorbing and removing and method of resource based on UTILIZATION OF VESIDUAL HEAT IN |
| JP2019188376A (en) * | 2018-04-27 | 2019-10-31 | 凸版印刷株式会社 | Adsorption agent, manufacturing method of adsorption agent and wallpaper |
| CN110586050A (en) * | 2019-09-18 | 2019-12-20 | 天津大学 | Hydrophobic Y molecular sieve for VOCs adsorption and preparation method thereof |
| CN110787767A (en) * | 2019-08-15 | 2020-02-14 | 北京科技大学 | Hydrophobic adsorbent and preparation method thereof |
| CN112675818A (en) * | 2020-11-30 | 2021-04-20 | 南京大学环境规划设计研究院集团股份公司 | Core-shell molecular sieve adsorbent for selectively adsorbing VOCs (volatile organic compounds) in high-humidity atmosphere and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6632768B2 (en) * | 2001-03-12 | 2003-10-14 | University Of Missouri-Columbia | Adsorbent for HC in exhaust gas, and process for producing the same |
| GB201322462D0 (en) * | 2013-12-18 | 2014-02-05 | Johnson Matthey Plc | Method for preparing a sorbent |
-
2021
- 2021-07-15 CN CN202110802900.8A patent/CN115608326B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2399670A1 (en) * | 2010-03-12 | 2011-12-28 | NGK Insulators, Ltd. | Zeolite structure and manufacturing method thereof |
| JP2019188376A (en) * | 2018-04-27 | 2019-10-31 | 凸版印刷株式会社 | Adsorption agent, manufacturing method of adsorption agent and wallpaper |
| CN109794135A (en) * | 2019-01-15 | 2019-05-24 | 北京科技大学 | Flue gas multiple pollutant adsorbing and removing and method of resource based on UTILIZATION OF VESIDUAL HEAT IN |
| CN109759035A (en) * | 2019-03-12 | 2019-05-17 | 清华大学 | NOxAdsorbent and its preparation method and application |
| CN110787767A (en) * | 2019-08-15 | 2020-02-14 | 北京科技大学 | Hydrophobic adsorbent and preparation method thereof |
| CN110586050A (en) * | 2019-09-18 | 2019-12-20 | 天津大学 | Hydrophobic Y molecular sieve for VOCs adsorption and preparation method thereof |
| CN112675818A (en) * | 2020-11-30 | 2021-04-20 | 南京大学环境规划设计研究院集团股份公司 | Core-shell molecular sieve adsorbent for selectively adsorbing VOCs (volatile organic compounds) in high-humidity atmosphere and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| Core-shell structured Y zeolite/hydrophobic organic polymer with improved toluene adsorption capacity under dry and wet conditions;Shuangchun Lu et al.;《Chemical Engineering Journal》;第409卷;128194(1-11) * |
| Enhancement of NOx adsorption performance on zeolite via a facile modification strategy;Yingshu Liu et al.;《Journal of Hazardous Materials》;第443卷;130225（1-10） * |
| 吸附烟气中NOx的吸附剂研究进展;赵毅 等;《中国电力》;第48卷(第10期);157-160 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115608326A (en) | 2023-01-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108745404A (en) | Carbon nitride films composite material and preparation method and the application in exhaust-gas treatment based on black phosphorus/metal organic frame modification | |
| CN109174173A (en) | A kind of molecular sieve SCR catalyst preparation method and its catalyst of preparation | |
| CN105772075B (en) | A kind of MnOx/ SAPO-34 low-temperature SCR catalyst for denitrating flue gas and the preparation method and application thereof | |
| CN109433256A (en) | A kind of Cu/Mn-SSZ-39 catalyst and its preparation method and application | |
| CN104588062A (en) | Non-metal-doped de-nitration catalyst and preparation method thereof | |
| CN105833901A (en) | PrOx-MnOx/SAPO-34 low-temperature SCR smoke denitration catalyst and preparation method and application thereof | |
| CN111001415A (en) | Preparation method of composite oxide low-temperature denitration catalyst and catalyst | |
| CN101905145A (en) | Molecular sieve cellular material and preparation method thereof | |
| CN104772038A (en) | Method for purifying acrylonitrile apparatus absorbing tower tail gas by using Pd-CeO2/Me-beta molecular sieve | |
| CN110773224A (en) | Preparation method of alkali metal-resistant denitration catalyst | |
| CN115608326B (en) | Adsorbent for removing NOx under high-humidity condition of flue gas and preparation method and application thereof | |
| CN105903478B (en) | Medium-low temperature SCR catalyst with wider use temperature and preparation method thereof | |
| CN105642333B (en) | A kind of Multifunctional environment purification composite material and preparation method and application | |
| CN112403483B (en) | Medium-low temperature nonmetallic mine-based SCR denitration and demercuration catalyst material and preparation method thereof | |
| CN114054039A (en) | Preparation of MnOx/alpha-Fe by utilizing artificially synthesized goethite2O3Method for preparing composite denitration catalyst and application thereof | |
| CN110479326A (en) | A kind of phosphorus doping copper cerium metal composite oxide bifunctional catalyst and its preparation method and application | |
| CN110124727B (en) | Coal ash-based denitration catalyst, preparation method thereof and denitration method | |
| CN107837819B (en) | MnY catalyst for indoor formaldehyde catalytic removal and preparation method thereof | |
| CN110354825A (en) | A kind of adsorbent for electroplating wastewater adsorption treatment | |
| CN112570023B (en) | Ionic liquid modified CuY molecular sieve catalyst and preparation method and application thereof | |
| CN113926421B (en) | Bismuth-loaded inorganic porous iodine adsorption material and macro preparation method thereof | |
| CN111250078B (en) | MnOx @ Eu-CeOx low-temperature SCR flue gas denitration catalyst and preparation method and application thereof | |
| CN113117639B (en) | Modified molecular sieve adsorbent and preparation method and application thereof | |
| CN106732763A (en) | A kind of Fe2O3Low-temperature SCR catalyst for denitrating flue gas of/SAPO 34 and preparation method and application | |
| CN111545191B (en) | Lithium potassium manganese composite oxide catalyst capable of being regenerated in heating mode and used for ozonolysis and preparation method thereof |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |