CN110252328A - A method of honeycomb, which is prepared, with useless SCR catalyst takes off dioxin catalyst - Google Patents
A method of honeycomb, which is prepared, with useless SCR catalyst takes off dioxin catalyst Download PDFInfo
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- CN110252328A CN110252328A CN201910604448.7A CN201910604448A CN110252328A CN 110252328 A CN110252328 A CN 110252328A CN 201910604448 A CN201910604448 A CN 201910604448A CN 110252328 A CN110252328 A CN 110252328A
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- catalyst
- honeycomb
- scr catalyst
- dioxin
- useless
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- 239000003054 catalyst Substances 0.000 title claims abstract description 138
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 28
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000001035 drying Methods 0.000 claims abstract description 25
- 239000000428 dust Substances 0.000 claims abstract description 25
- 239000000843 powder Substances 0.000 claims abstract description 23
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims abstract description 15
- UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical compound [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 claims abstract description 15
- 230000032683 aging Effects 0.000 claims abstract description 14
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910001981 cobalt nitrate Inorganic materials 0.000 claims abstract description 14
- 210000001161 mammalian embryo Anatomy 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 14
- 235000011187 glycerol Nutrition 0.000 claims abstract description 13
- 238000004140 cleaning Methods 0.000 claims abstract description 11
- 238000001354 calcination Methods 0.000 claims abstract description 9
- 230000008569 process Effects 0.000 claims abstract description 9
- 238000001125 extrusion Methods 0.000 claims abstract description 8
- 239000004615 ingredient Substances 0.000 claims abstract description 7
- -1 hydroxypropyl methyl Chemical group 0.000 claims description 12
- 229920003091 Methocel™ Polymers 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- 239000012855 volatile organic compound Substances 0.000 claims 3
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 abstract 1
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 abstract 1
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 abstract 1
- 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 abstract 1
- 238000010298 pulverizing process Methods 0.000 abstract 1
- 230000003197 catalytic effect Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 238000006555 catalytic reaction Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 238000004513 sizing Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 239000002920 hazardous waste Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Chemical compound O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 description 2
- 231100000572 poisoning Toxicity 0.000 description 2
- 230000000607 poisoning effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten(VI) oxide Inorganic materials O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- LJCFOYOSGPHIOO-UHFFFAOYSA-N antimony pentoxide Inorganic materials O=[Sb](=O)O[Sb](=O)=O LJCFOYOSGPHIOO-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229960000892 attapulgite Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- KTPIHRZQGZDLSN-UHFFFAOYSA-N cobalt;nitric acid Chemical compound [Co].O[N+]([O-])=O KTPIHRZQGZDLSN-UHFFFAOYSA-N 0.000 description 1
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 230000001404 mediated effect Effects 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- GPNDARIEYHPYAY-UHFFFAOYSA-N palladium(ii) nitrate Chemical compound [Pd+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O GPNDARIEYHPYAY-UHFFFAOYSA-N 0.000 description 1
- 229910052625 palygorskite Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 231100001239 persistent pollutant Toxicity 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 239000002383 tung oil Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8659—Removing halogens or halogen compounds
- B01D53/8662—Organic halogen compounds
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/85—Chromium, molybdenum or tungsten
- B01J23/888—Tungsten
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/40—Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/61—Surface area
- B01J35/615—100-500 m2/g
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/206—Organic halogen compounds
- B01D2257/2064—Chlorine
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Catalysts (AREA)
Abstract
The method that honeycomb takes off dioxin catalyst is prepared with useless SCR catalyst the invention discloses a kind of, includes the following steps: 1) to pre-process: dust suction, cleaning, drying and pulverization process successively being carried out to useless SCR catalyst module, obtain SCR catalyst powder；2) ingredient: ammonium metavanadate, cobalt nitrate, ammonium metatungstate, hydroxypropyl methyl cellulose and glycerine are added into SCR catalyst powder and is uniformly mixed, obtains mixture；3) pugging and aging: carrying out vacuum pugging using vacuum deairing machine for mixture, then seals aging, obtains pug；4) extrusion forming: pug is squeezed out and cuts to obtain the de- dioxin catalyst wet embryo of honeycomb；5) drying and calcination: calcining after honeycomb is taken off dioxin catalyst wet embryo dryness finalization, obtains honeycomb and takes off dioxin catalyst.The present invention is a kind of to prepare the method that honeycomb takes off dioxin catalyst with useless SCR catalyst, effectively reduces production cost, and the utilization for SCR catalyst of giving up provides new way, reduces environmental pollution.
Description
Technical field
The method that honeycomb takes off dioxin catalyst is prepared with useless SCR catalyst the present invention relates to a kind of.
Background technique
As country requires to be increasingly stringenter to air contaminant treatment, SCR technology (SCR) has become de-
Most mature technology in nitre engineering, wherein SCR catalyst is core.In the process of running, the high-content in flue gas is grey for catalyst
Heavy metal contaminants in point and wait substances at alkali (soil) metal, sulfur dioxide, cause SCR catalyst poisoning, abrasion, block, make
Catalyst denitration performance decline, be unable to satisfy use.Therefore useless SCR catalyst is produced, it is a large amount of due to containing in useless SCR
Heavy metal, belongs to the scope of hazardous waste HW50, and processing cost is high.
Useless SCR catalyst is that have very large access area by modular structure, containing a large amount of titaniums, tungsten and vanadium and silicon,
The oxides such as aluminium, calcium, therefore, useless SCR catalyst still have certain catalytic capability, can be used among other catalyst systems.
Dioxin is the persistent pollutant that a kind of pair of ecological environment and human health have serious harm, is had extremely strong carcinogenic
Property.In order to eliminate this hypertoxicity pollutant, many correlation processing techniques are developed, wherein catalytic oxidation is a kind of comparison
Efficient method.Catalyst in de- dioxin catalytic oxidation technologies mainly includes noble metal, molecular sieve and transiting metal oxidation
Object catalyst.Currently, the oxide of transition metal V, Cr, Mn, Fe, Co and W are because its is at low cost, stability and sulfur poisoning-resistant
It is good, it is welcome by people.Patent CN201610455322.4 using attapulgite and TiO2 as carrier, V2O5, WO3, Sb2O5 and
Nb2O5 is that active component extrusion molding honeycomb takes off dioxin catalyst.Patent CN201510636751.7 is with γ-Al2O3-
MgO is carrier, take nickel nitrate, palladium nitrate and copper nitrate as the catalyst of activity preparation.De- the two of patent 201510171820.1
Dislike the TiO2 that English catalyst includes 75%-95%, the silica of the V2O5 of the WO3 of 0%-3%, 3%-10%, 2%-10%.The above patent
Though catalyst can remove dioxin, preparation process is complicated, higher cost, and removes dioxin low efficiency.
Summary of the invention
The method that honeycomb takes off dioxin catalyst is prepared with useless SCR catalyst the purpose of the present invention is to provide a kind of,
The production cost that honeycomb takes off dioxin catalyst is effectively reduced, and the utilization for SCR catalyst of giving up provides new way, has
Conducive to reducing environmental pollution.
To achieve the above object, the present invention provides a kind of side that the de- dioxin catalyst of honeycomb is prepared with useless SCR catalyst
Method includes the following steps:
1) it pre-processes: dust suction 20-40min being carried out to useless SCR catalyst module by vacuumizing dust exhaust apparatus, it will be useless after dust suction
10-20min is cleaned in SCR catalyst module merging cleaning solution, the useless SCR catalyst module after cleaning is dried, then will
Useless SCR catalyst module after drying is ground into the SCR catalyst powder of granularity d50≤5 μm, the dust exhaust apparatus that vacuumizes
Vacuum degree is 200-235mbar, and the cleaning solution is acid solution or lye, and acid solution or the concentration of lye are 0.1-0.5mol/l；
2) ammonium metavanadate, cobalt nitrate, ammonium metatungstate, hydroxypropyl methyl fiber ingredient: are added into obtained SCR catalyst powder
Element and glycerine are simultaneously uniformly mixed, and obtain mixture, the SCR catalyst powder, ammonium metavanadate, cobalt nitrate, ammonium metatungstate, hydroxyl
Propyl methocel and glycerine are with weight ratio meter for (75-86): (2-4): (3-5): (5-8): (1-3): (3-5)；
3) pugging and aging: carrying out vacuum pugging using vacuum deairing machine for obtained mixture, then seal aging 6-12h,
Obtain pug；
4) it extrusion forming: obtained pug is extruded into required shape and cut by extruder obtains the honeycomb of certain size and takes off
Dioxin catalyst wet embryo；
5) drying and calcination: obtained honeycomb is taken off into dioxin catalyst wet embryo dryness finalization, then the honeycomb after drying is taken off two
It dislikes English catalyst green body and calcines 6-8h at 450-550 DEG C, obtain honeycomb and take off dioxin catalyst.
Preferably, it is 500-1300mm that the honeycomb, which takes off the length of dioxin catalyst,.
Preferably, it is rectangular that the honeycomb, which takes off the cross sectional shape of dioxin catalyst,.
Preferably, it is 360-580m that the honeycomb, which takes off dioxin specific surface area of catalyst,2/g。
The advantages and beneficial effects of the present invention are: primary raw material gives up, SCR catalyst belongs to solid hazardous waste, raw material
It is cheap and easy to get, the production cost that honeycomb takes off dioxin catalyst is effectively reduced, and the utilization for SCR catalyst of giving up provides
New way reaches resource utilization purpose, reduces environmental pollution.In addition, preparation process of the invention is simple, the catalyst of preparation
Have the advantages that high-efficient de- dioxin, high mechanical strength, long catalytic life, be easy to the advantages such as industrial applications, has preferable
Economy and application value.
Specific embodiment
With reference to embodiment, the specific embodiment of the present invention is further described.Following embodiment is only used for more
Add and clearly demonstrate technical solution of the present invention, and not intended to limit the protection scope of the present invention.
Embodiment 1
A method of honeycomb is prepared with useless SCR catalyst and takes off dioxin catalyst, is included the following steps:
1) it pre-processes: dust suction 20min being carried out to useless SCR catalyst module by vacuumizing dust exhaust apparatus, by the useless SCR after dust suction
10min is cleaned in the lye that catalyst module merging concentration is 0.1mol/l, the useless SCR catalyst module after cleaning is done
It is dry, then the useless SCR catalyst module after drying is ground into the SCR catalyst powder of granularity d50=3.45 μm, it is described to vacuumize
The vacuum degree of dust exhaust apparatus is 200mbar；
2) ammonium metavanadate, cobalt nitrate, ammonium metatungstate, hydroxypropyl methyl fiber ingredient: are added into obtained SCR catalyst powder
Element and glycerine are simultaneously uniformly mixed, and obtain mixture, the SCR catalyst powder, ammonium metavanadate, cobalt nitrate, ammonium metatungstate, hydroxyl
Propyl methocel and glycerine are 75:4:5:8:1:5 with weight ratio meter；
3) pugging and aging: obtained mixture being carried out vacuum pugging 3 times using vacuum deairing machine, then seals aging 6h,
Obtain pug；
4) extrusion forming:, which being squeezed out obtained pug by extruder, and is cut into the rectangular honeycomb de- two that length is 500mm dislikes
English catalyst wet embryo；
5) drying and calcination: obtained honeycomb is taken off into dioxin catalyst wet embryo microwave drying sizing 5min, then will be after drying
Honeycomb takes off dioxin catalyst green body and calcines 6h at 550 DEG C, and obtaining specific surface area is 360m2The honeycomb of/g takes off dioxin catalysis
Agent.
Embodiment 2
A method of honeycomb is prepared with useless SCR catalyst and takes off dioxin catalyst, is included the following steps:
1) it pre-processes: dust suction 40min being carried out to useless SCR catalyst module by vacuumizing dust exhaust apparatus, by the useless SCR after dust suction
20min is cleaned in the acid solution that catalyst module merging concentration is 0.5mol/l, the useless SCR catalyst module after cleaning is done
It is dry, then the useless SCR catalyst module after drying is ground into the SCR catalyst powder of granularity d50=3.46 μm, it is described to vacuumize
The vacuum degree of dust exhaust apparatus is 235mbar；
2) ammonium metavanadate, cobalt nitrate, ammonium metatungstate, hydroxypropyl methyl fiber ingredient: are added into obtained SCR catalyst powder
Element and glycerine are simultaneously uniformly mixed, and obtain mixture, the SCR catalyst powder, ammonium metavanadate, cobalt nitrate, ammonium metatungstate, hydroxyl
Propyl methocel and glycerine are 86:2:3:5:1:3 with weight ratio meter；
3) pugging and aging: obtained mixture being carried out vacuum pugging 1 time using vacuum deairing machine, then seals aging 12h,
Obtain pug；
4) extrusion forming:, which being squeezed out obtained pug by extruder, and is cut into the rectangular honeycomb de- two that length is 1300mm dislikes
English catalyst wet embryo；
5) drying and calcination: obtained honeycomb is taken off into dioxin catalyst wet embryo microwave drying sizing 8min, then will be after drying
Honeycomb takes off dioxin catalyst green body and calcines 8h at 450 DEG C, and obtaining specific surface area is 580m2The honeycomb of/g takes off dioxin catalysis
Agent.
Embodiment 3
A method of honeycomb is prepared with useless SCR catalyst and takes off dioxin catalyst, is included the following steps:
1) it pre-processes: dust suction 30min being carried out to useless SCR catalyst module by vacuumizing dust exhaust apparatus, by the useless SCR after dust suction
15min is cleaned in the acid solution that catalyst module merging concentration is 0.3mol/l, the useless SCR catalyst module after cleaning is done
It is dry, then the useless SCR catalyst module after drying is ground into the SCR catalyst powder of granularity d50=4.56 μm, it is described to vacuumize
The vacuum degree of dust exhaust apparatus is 220mbar；
2) ammonium metavanadate, cobalt nitrate, ammonium metatungstate, hydroxypropyl methyl fiber ingredient: are added into obtained SCR catalyst powder
Element and glycerine are simultaneously uniformly mixed, and obtain mixture, the SCR catalyst powder, ammonium metavanadate, cobalt nitrate, ammonium metatungstate, hydroxyl
Propyl methocel and glycerine are 80:3:4:7:2:4 with weight ratio meter；
3) pugging and aging: obtained mixture being carried out vacuum pugging 2 times using vacuum deairing machine, then seals aging 8h,
Obtain pug；
4) extrusion forming:, which being squeezed out obtained pug by extruder, and is cut into the rectangular honeycomb de- two that length is 1000mm dislikes
English catalyst wet embryo；
5) drying and calcination: obtained honeycomb is taken off into dioxin catalyst wet embryo microwave drying sizing 6min, then will be after drying
Honeycomb takes off dioxin catalyst green body and calcines 7h at 500 DEG C, and obtaining specific surface area is 434m2The honeycomb of/g takes off dioxin catalysis
Agent.
Embodiment 4
A method of honeycomb is prepared with useless SCR catalyst and takes off dioxin catalyst, is included the following steps:
1) it pre-processes: dust suction 40min being carried out to useless SCR catalyst module by vacuumizing dust exhaust apparatus, by the useless SCR after dust suction
15min is cleaned in the lye that catalyst module merging concentration is 0.4mol/l, the useless SCR catalyst module after cleaning is done
It is dry, then the useless SCR catalyst module after drying is ground into the SCR catalyst powder of granularity d50=3.75 μm, it is described to vacuumize
The vacuum degree of dust exhaust apparatus is 235mbar；
2) ammonium metavanadate, cobalt nitrate, ammonium metatungstate, hydroxypropyl methyl fiber ingredient: are added into obtained SCR catalyst powder
Element and glycerine are simultaneously uniformly mixed, and obtain mixture, the SCR catalyst powder, ammonium metavanadate, cobalt nitrate, ammonium metatungstate, hydroxyl
Propyl methocel and glycerine are 85:2:3:5:1:4 with weight ratio meter；
3) pugging and aging: obtained mixture being carried out vacuum pugging 3 times using vacuum deairing machine, then seals aging 10h,
Obtain pug；
4) extrusion forming:, which being squeezed out obtained pug by extruder, and is cut into the rectangular honeycomb de- two that length is 800mm dislikes
English catalyst wet embryo；
5) drying and calcination: obtained honeycomb is taken off into dioxin catalyst wet embryo microwave drying sizing 10min, then will be after drying
Honeycomb takes off dioxin catalyst green body and calcines 6h at 500 DEG C, and obtaining specific surface area is 500m2The honeycomb of/g takes off dioxin catalysis
Agent.
Comparative example 1
A method of honeycomb is prepared with useless SCR catalyst and takes off dioxin catalyst, is included the following steps:
The first step, the SCR catalyst powder for using raymond grinding powder to be broken to granularity as d50=4.54 μm useless SCR catalyst module；
Second step, by obtained SCR catalyst powder and active material, binder and lubricant with weight ratio meter for 100:10:
0.5:0.5 is mediated after mixing, is squeezed out honeycomb, drying and calcination, is obtained honeycomb and is taken off dioxin catalyst；Wherein, active
Substance is ammonium metavanadate, cobalt nitrate and ammonium metatungstate, and binder is methylcellulose, and lubricant is tung oil, ammonium metavanadate, nitric acid
Cobalt and ammonium metatungstate are 2:3:5 with weight ratio meter.
Catalyst performance test
Embodiment 1-4 and comparative example 1 are detected into catalyst strength on YAW-300D type pressure testing machine.Honeycomb de- two is taken to dislike
5 × 5 hole of English catalyst, length 500mm, in air speed 20000h-1, oxygen content 10%, o-dichlorohenzene 2500mg/m3, N2For balance
Concentration is imported and exported with GC9800 type gas-chromatography on-line checking under the same test conditions of gas, testing result is shown in Table 1.
1 catalyst performance testing result of table
As it can be seen from table 1 taking off dioxin catalyst made from embodiment 1-4 takes off dioxin efficiency and catalytic mechanical intensity all
Better than comparative example 1.It can be seen that catalyst prepared by the present invention has high-efficient de- dioxin, high mechanical strength, long catalytic life
Advantage, the resource for realizing useless SCR catalyst are maximally utilized, are reduced environmental pollution, and reduce production cost, reach recycling benefit
Use purpose.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (4)
1. a kind of prepare the method that honeycomb takes off dioxin catalyst with useless SCR catalyst, which comprises the steps of:
1) it pre-processes: dust suction 20-40min being carried out to useless SCR catalyst module by vacuumizing dust exhaust apparatus, it will be useless after dust suction
10-20min is cleaned in SCR catalyst module merging cleaning solution, the useless SCR catalyst module after cleaning is dried, then will
Useless SCR catalyst module after drying is ground into the SCR catalyst powder of granularity d50≤5 μm, the dust exhaust apparatus that vacuumizes
Vacuum degree is 200-235mbar, and the cleaning solution is acid solution or lye, and acid solution or the concentration of lye are 0.1-0.5mol/l；
2) ammonium metavanadate, cobalt nitrate, ammonium metatungstate, hydroxypropyl methyl fiber ingredient: are added into obtained SCR catalyst powder
Element and glycerine are simultaneously uniformly mixed, and obtain mixture, the SCR catalyst powder, ammonium metavanadate, cobalt nitrate, ammonium metatungstate, hydroxyl
Propyl methocel and glycerine are with weight ratio meter for (75-86): (2-4): (3-5): (5-8): (1-3): (3-5)；
3) pugging and aging: carrying out vacuum pugging using vacuum deairing machine for obtained mixture, then seal aging 6-12h,
Obtain pug；
4) it extrusion forming: obtained pug is extruded into required shape and cut by extruder obtains the honeycomb of certain size and takes off
Dioxin catalyst wet embryo；
5) drying and calcination: obtained honeycomb is taken off into dioxin catalyst wet embryo dryness finalization, then the honeycomb after drying is taken off two
It dislikes English catalyst green body and calcines 6-8h at 450-550 DEG C, obtain honeycomb and take off dioxin catalyst.
2. the method according to claim 1 for preparing honeycomb VOCs catalyst with useless SCR catalyst, which is characterized in that institute
Stating honeycomb to take off the length of dioxin catalyst is 500-1300mm.
3. the method according to claim 2 for preparing honeycomb VOCs catalyst with useless SCR catalyst, which is characterized in that institute
It is rectangular for stating honeycomb to take off the cross sectional shape of dioxin catalyst.
4. the method according to claim 3 for preparing honeycomb VOCs catalyst with useless SCR catalyst, which is characterized in that institute
Stating honeycomb to take off dioxin specific surface area of catalyst is 360-580m2/g。
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111167490A (en) * | 2020-02-14 | 2020-05-19 | 江苏龙净科杰环保技术有限公司 | Method for preparing antitoxic low-temperature denitration catalyst by using waste SCR catalyst |
| CN112657559A (en) * | 2020-11-06 | 2021-04-16 | 苏州西热节能环保技术有限公司 | Method for realizing synchronous denitration and dioxin removal by modification and regeneration of deactivated SCR catalyst |
| CN116037609A (en) * | 2023-02-10 | 2023-05-02 | 成都华域环保有限公司 | Method for recycling catalytic cracking waste catalyst |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101607203A (en) * | 2009-07-16 | 2009-12-23 | 浙江大学 | Be used to remove the Catalysts and its preparation method of dioxin-type halogenated aromatic compounds |
| CN102366722A (en) * | 2011-11-21 | 2012-03-07 | 国电科学技术研究院 | Denitrition catalyst with mercury removal effect and its preparation method |
| CN104624050A (en) * | 2015-01-22 | 2015-05-20 | 李灏呈 | Method for recycling wasted SCR denitrification catalyst |
| CN105964243A (en) * | 2016-06-16 | 2016-09-28 | 上海净球环保科技有限公司 | Method for preparing denitration catalyst from discarded vanadium and titanium based denitration catalyst |
| CN106140327A (en) * | 2016-08-23 | 2016-11-23 | 成都万里蓝环保科技有限公司 | The regeneration catalyzing powder prepared by discarded vanadia-based SCR catalysts and method thereof |
| CN109225248A (en) * | 2018-08-09 | 2019-01-18 | 江苏龙净科杰环保技术有限公司 | Cellular low-temperature denitration catalyst and its preparation process |
-
2019
- 2019-07-05 CN CN201910604448.7A patent/CN110252328A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101607203A (en) * | 2009-07-16 | 2009-12-23 | 浙江大学 | Be used to remove the Catalysts and its preparation method of dioxin-type halogenated aromatic compounds |
| CN102366722A (en) * | 2011-11-21 | 2012-03-07 | 国电科学技术研究院 | Denitrition catalyst with mercury removal effect and its preparation method |
| CN104624050A (en) * | 2015-01-22 | 2015-05-20 | 李灏呈 | Method for recycling wasted SCR denitrification catalyst |
| CN105964243A (en) * | 2016-06-16 | 2016-09-28 | 上海净球环保科技有限公司 | Method for preparing denitration catalyst from discarded vanadium and titanium based denitration catalyst |
| CN106140327A (en) * | 2016-08-23 | 2016-11-23 | 成都万里蓝环保科技有限公司 | The regeneration catalyzing powder prepared by discarded vanadia-based SCR catalysts and method thereof |
| CN109225248A (en) * | 2018-08-09 | 2019-01-18 | 江苏龙净科杰环保技术有限公司 | Cellular low-temperature denitration catalyst and its preparation process |
Non-Patent Citations (1)
| Title |
|---|
| 唐婕等: "《环保陶瓷生产与应用》", 31 January 2018, 中国建材工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111167490A (en) * | 2020-02-14 | 2020-05-19 | 江苏龙净科杰环保技术有限公司 | Method for preparing antitoxic low-temperature denitration catalyst by using waste SCR catalyst |
| CN111167490B (en) * | 2020-02-14 | 2022-07-22 | 江苏龙净科杰环保技术有限公司 | Method for preparing anti-poison low-temperature denitration catalyst by using waste SCR catalyst |
| CN112657559A (en) * | 2020-11-06 | 2021-04-16 | 苏州西热节能环保技术有限公司 | Method for realizing synchronous denitration and dioxin removal by modification and regeneration of deactivated SCR catalyst |
| CN116037609A (en) * | 2023-02-10 | 2023-05-02 | 成都华域环保有限公司 | Method for recycling catalytic cracking waste catalyst |
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Application publication date: 20190920 |