CN107857599A - A kind of medium temperature denitration catalyst type nanometer accumulation of heat ceramic honey comb - Google Patents
A kind of medium temperature denitration catalyst type nanometer accumulation of heat ceramic honey comb Download PDFInfo
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- CN107857599A CN107857599A CN201711299894.9A CN201711299894A CN107857599A CN 107857599 A CN107857599 A CN 107857599A CN 201711299894 A CN201711299894 A CN 201711299894A CN 107857599 A CN107857599 A CN 107857599A
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- pug
- honey comb
- ceramic honey
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- 239000003054 catalyst Substances 0.000 title claims abstract description 73
- 241000264877 Hippospongia communis Species 0.000 title claims abstract description 44
- 239000000919 ceramic Substances 0.000 title claims abstract description 44
- 238000009825 accumulation Methods 0.000 title claims abstract description 18
- 238000001354 calcination Methods 0.000 claims abstract description 46
- 238000001125 extrusion Methods 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 19
- 230000001404 mediated effect Effects 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 claims abstract description 16
- 238000007493 shaping process Methods 0.000 claims abstract description 14
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 11
- 229920001577 copolymer Polymers 0.000 claims abstract description 11
- 239000003365 glass fiber Substances 0.000 claims abstract description 11
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 11
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229920005594 polymer fiber Polymers 0.000 claims abstract description 11
- 239000008117 stearic acid Substances 0.000 claims abstract description 11
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052582 BN Inorganic materials 0.000 claims abstract description 8
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 29
- 238000001035 drying Methods 0.000 claims description 26
- 239000002002 slurry Substances 0.000 claims description 25
- 239000000758 substrate Substances 0.000 claims description 21
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 20
- 238000001914 filtration Methods 0.000 claims description 20
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 15
- 239000011521 glass Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 14
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 229910000838 Al alloy Inorganic materials 0.000 claims description 10
- 229920000742 Cotton Polymers 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000008367 deionised water Substances 0.000 claims description 10
- 229910021641 deionized water Inorganic materials 0.000 claims description 10
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims description 10
- 238000004321 preservation Methods 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 8
- 238000009955 starching Methods 0.000 claims description 6
- NGDQQLAVJWUYSF-UHFFFAOYSA-N 4-methyl-2-phenyl-1,3-thiazole-5-sulfonyl chloride Chemical compound S1C(S(Cl)(=O)=O)=C(C)N=C1C1=CC=CC=C1 NGDQQLAVJWUYSF-UHFFFAOYSA-N 0.000 claims description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
- CEGOLXSVJUTHNZ-UHFFFAOYSA-K aluminium tristearate Chemical compound [Al+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CEGOLXSVJUTHNZ-UHFFFAOYSA-K 0.000 claims description 5
- 229940063655 aluminum stearate Drugs 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 5
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000007822 coupling agent Substances 0.000 claims description 5
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims description 5
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 claims description 5
- 230000008020 evaporation Effects 0.000 claims description 5
- FYDKNKUEBJQCCN-UHFFFAOYSA-N lanthanum(3+);trinitrate Chemical compound [La+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O FYDKNKUEBJQCCN-UHFFFAOYSA-N 0.000 claims description 5
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical compound [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 claims description 5
- 229910052863 mullite Inorganic materials 0.000 claims description 5
- 230000010355 oscillation Effects 0.000 claims description 5
- 235000006408 oxalic acid Nutrition 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 239000003755 preservative agent Substances 0.000 claims description 5
- 230000002335 preservative effect Effects 0.000 claims description 5
- 229920005573 silicon-containing polymer Polymers 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 238000010792 warming Methods 0.000 claims description 5
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 4
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims description 4
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims 2
- 239000004408 titanium dioxide Substances 0.000 claims 1
- 238000002360 preparation method Methods 0.000 abstract description 6
- 230000003197 catalytic effect Effects 0.000 abstract description 2
- 239000002585 base Substances 0.000 description 29
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
- 229910052796 boron Inorganic materials 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-L Phosphate ion(2-) Chemical compound OP([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-L 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- HIVLDXAAFGCOFU-UHFFFAOYSA-N ammonium hydrosulfide Chemical compound [NH4+].[SH-] HIVLDXAAFGCOFU-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000003421 catalytic decomposition reaction Methods 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- GFNGCDBZVSLSFT-UHFFFAOYSA-N titanium vanadium Chemical compound [Ti].[V] GFNGCDBZVSLSFT-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0006—Honeycomb structures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—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
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8628—Processes characterised by a specific catalyst
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- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/24—Nitrogen compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- 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
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/46—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5025—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with ceramic materials
- C04B41/5031—Alumina
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- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
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- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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- C04B2235/3852—Nitrides, e.g. oxynitrides, carbonitrides, oxycarbonitrides, lithium nitride, magnesium nitride
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Abstract
The invention discloses a kind of medium temperature denitration catalyst type nanometer accumulation of heat ceramic honey comb, it is characterised in that the catalyst mainly includes：Nano titanium dioxide；Methyl methacrylate-butadiene-styrene copolymer；Boron nitride；Silica；Glass fibre；Stearic acid；High polymer fiber；Aminocellulose, mediated by catalyst pug, catalyst pug is old, catalyst pug extrusion molding, and shaping of catalyst, wet base are dry, calcination process is prepared.The present invention improves the catalytic efficiency of catalyst, reduces the use cost of catalyst；It is stearic to add the shaping and demoulding for contributing to catalyst, improve the yield rate of catalyst making；Preparation process of the present invention is simple, and reaction condition is gentle under medium temperature environment, and cost is cheap.
Description
Technical field
The present invention relates to a kind of middle temperature catalyst, especially a kind of medium temperature denitration catalyst type nanometer accumulation of heat ceramic honey comb.
Background technology
Gas denitrifying technology can be divided into the major class of dry and wet two at present, and Dry denitration includes catalytic reduction method（SCR）, choosing
Selecting property noncatalytic reduction（SNCR）, catalytic decomposition, absorption method and low-temperature plasma method；Wet denitration includes acid absorption, alkali
Absorption, chemical oxidation absorption and biological reducing method etc..
Traditional vanadium titanium system denitrating catalyst, active temperature windows are narrower（320~400 DEG C）, easily by SO in running2
It is poisoned, activity is relatively low under low temperature, and is also easy to produce sulphur ammonium, blocking catalyst hole and air preheater and upstream device, causes system pressure drop
It is larger, increase the unfavorable factors such as the electric cost of air-introduced machine.
And existing rare-earth-based catalyst does not have heat accumulation function, and wear no resistance, active temperature low value is higher, intensity
Low, service life is short；So that application is greatly limited to, therefore, we there is an urgent need to study a kind of new catalyst, with
Substitute the said goods.
The content of the invention
The present invention provides a kind of medium temperature denitration catalyst type nanometer accumulation of heat ceramic honey comb, to solve above-mentioned technical problem.
In order to solve the above technical problems, the technical scheme that the present invention program uses is：A kind of medium temperature denitration catalyst type nanometer
Accumulation of heat ceramic honey comb, it is characterised in that the denitrating catalyst is mainly by following components：70~85 parts of Nano titanium dioxide；Methyl
Methyl acrylate -4~10 parts of butadiene-styrene copolymer；1~3 part of boron nitride；50~60 parts of silicon dioxide powder；
20~30 parts of alumina in Nano level；3~8 parts of glass fibre；0.8~1 part of stearic acid；0.8~1 part of high polymer fiber；
0.8~1 part of aminocellulose is mediated by catalyst pug, and catalyst pug is old, catalyst pug extrusion molding, catalyst
Shaping, the drying of wet base, calcination process are prepared.
A kind of medium temperature denitration catalyst type nanometer accumulation of heat ceramic honey comb, its preparation method comprise the following steps：
（1）Pug is mediated：
i）Weigh 70~85 parts of Nano titanium dioxide；Methyl methacrylate-butadiene-styrene copolymer 4~
10 parts；1~3 part of boron nitride；50~60 parts of silicon dioxide powder；20~30 parts of alumina in Nano level；0.8~1 part of stearic acid, 20%
Ammoniacal liquor adjusts pug pH, deionized water：Powder weight ratio is 0.4~0.6, and 20min or so is mediated in stirring, by mediating and adjusting
Deionized water, the ammoniacal liquor regulation pug index of addition, pug are mediated（i）Pug moisture target value 38~45%, pH desired values 7.8
~9.4；
ii）0.5~1.5 part of 20% ammoniacal liquor is added, covers stirring machine cap, more than 95 DEG C is heated to while stirring, then beats
Top cover is opened, pug moisture to pug is concentrated by evaporation and is in granular form, the pug moisture target value 25~28%, pH desired values 7.8~
8.5；
iii）Add silica 1~5 part successively while stirring, 3~8 parts of glass fibre adds 20% ammoniacal liquor, and stirring 15min is left
The right side, the pug moisture target value 29~34%, pH desired values 8.1~9.2；
iv）0.8~1 part of high polymer fiber is added successively；0.8~1 part of aminocellulose, more than 10min is stirred, it is described
Pug moisture target value 28~32%, pH desired values 8.1~9.0.
（2）It is old：The pug that will be kneaded, is sealed with preservative film, old, old 3-4h；
（3）Pre-filtering is extruded：By old good pug, on pre-filtering extruder, extrusion force 1700~2200N of plasticity, filter
It is extruded into mud bar；
（4）Shaping extrusion：Extrusion molding is carried out on vacuum-extruder of the front end equipped with SCR moulds, it is wet to obtain catalyst
Base；
（5）Drying-calcining：By step（4）The obtained wet base of catalyst, is transferred on aluminium alloy pallet, with the glass with heat-preservation cotton
The lid of glass steel material is packaged, and drying temperature is 90 DEG C, and control temperature is incremented by from 30 DEG C by 5 DEG C/h of gradients, is dried
Cycle 5h；Dried catalyst blank is calcined, 1100 DEG C of calcining heat, in calcination process, control temperature is from 100 DEG C
Rise, be incremented by by 100 DEG C/h of gradients, calcination time is 18~22h, obtains ceramic honey comb base substrate.
（6）Starching：Weigh 5~8 parts of alumina in Nano level, 5~10 parts of ferric nitrate, 5~15 parts of manganese nitrate, mullite 5~
10 parts, 5~10 parts of ammonium dihydrogen phosphate, 0.5~2 part of dimethyl silicone polymer, 6~10 parts of aluminum stearate；3~5 parts of yttrium nitrate, partially
5~8 parts of ammonium tungstate, 5~8 parts of cerous nitrate, 2~4 parts of lanthanum nitrate, 3 parts of titanate coupling agent, are dissolved in containing 1.2 at 70~95 DEG C
The aqueous solution of~3.5 parts of oxalic acid, slurries are than 1:3, add and be warming up to 80 DEG C and be incubated, stirred 1~2 hour with ultrasonic oscillation, system
Into slurry；Step 5 gained ceramic honey comb base substrate is put into slurry pool, drying oven, drying temperature 70 are put into after wrapping slurry
DEG C, control temperature is incremented by by 5 DEG C/h of gradients, 20~30 minutes arid cycles, struck off outside ceramic honey comb base substrate from 30 DEG C
The slurry of side and after cleaning out, is reentered into drying oven, and drying temperature is 90 DEG C, arid cycle 1h；
（7）Drying-calcining：By step（6）Obtained ceramic honey comb base substrate, is transferred on aluminium alloy pallet, with heat-preservation cotton
The lid of glass steel material is packaged, and is calcined, 550 DEG C of calcining heat, and in calcination process, control temperature is pressed from 100 DEG C
100 DEG C/h of gradients are incremented by, and calcination time is 7~9h, obtains medium temperature ceramic honey comb.
Preferably, the step（3）Pre-filtering is extruded, and filter screen uses mesh specification as 1.0x4mm's or 0.8x3mm
Stainless steel filtering net.
Preferably, the step（4）Shaping extrusion, extruder control condition is extrusion pressure 7MPa, extrusion temperature ＜
35 DEG C, vacuum -0.094MPa or so.
The invention has the advantages that：The present invention first passes through high-temperature firing ceramic honey comb idiosome, then by ceramic honey comb base substrate
Starching, finally fire and form by medium temperature, be advantageous to improve catalyst heat endurance；It is adaptable to coal-burning boiler, fired power generating unit
Air preheater in；The catalytic efficiency of catalyst is improved, reduces the use cost of catalyst；Stearic addition helps to urge
The shaping and demoulding of agent, improve the yield rate of catalyst making；Preparation process of the present invention is simple, reacts bar under medium temperature environment
Part is gentle, and cost is cheap.
Embodiment
For the ease of understanding the present invention, the present invention is described more fully embodiment below.But the present invention can
To realize in different forms, however it is not limited to embodiment described herein.It is opposite, there is provided the purpose of these embodiments is
Make to the disclosure more thorough and comprehensive.
Embodiment 1
A kind of medium temperature denitration catalyst type nanometer accumulation of heat ceramic honey comb is mainly by following components：70 parts of Nano titanium dioxide；Methyl
Methyl acrylate -10 parts of butadiene-styrene copolymer；3 parts of boron nitride；50 parts of silicon dioxide powder；Nanoscale
20 parts of aluminium；5 parts of glass fibre；0.9 part of stearic acid；0.8 part of high polymer fiber；0.8 part of aminocellulose is by catalysis
Agent pug is mediated, and catalyst pug is old, catalyst pug extrusion molding, and shaping of catalyst, wet base are dry, prepared by calcination process
Form.
A kind of preparation method of medium temperature denitration catalyst type nanometer accumulation of heat ceramic honey comb comprises the following steps：
（1）Pug is mediated：
i）Weigh 70 parts of Nano titanium dioxide；Methyl methacrylate -10 parts of butadiene-styrene copolymer；Nitrogen
Change 3 parts of boron；20 parts of alumina in Nano level；0.9 part of stearic acid, 20% ammoniacal liquor regulation pug pH, deionized water：Powder weight ratio is
0.4~0.6,20min or so is mediated in stirring, and by mediating and adjusting the deionized water of addition, ammoniacal liquor adjusts pug index, pug
Mediate（i）Pug moisture target value 38~45%, pH desired values 7.8~9.4；
ii）0.5 part of 20% ammoniacal liquor is added, covers stirring machine cap, is heated to more than 95 DEG C while stirring, then opens top
Lid, it is concentrated by evaporation pug moisture to pug and is in granular form, the pug moisture target value 25~28%, pH desired values 7.8~8.5；
iii）Add 50 parts of silica successively while stirring, 3 parts of glass fibre, add 20% ammoniacal liquor, stirring 15min or so, institute
State pug moisture target value 29~34%, pH desired values 8.1~9.2；
iv）0.8 part of high polymer fiber is added successively；0.8 part of aminocellulose, stir more than 10min, the pug water
Subhead scale value 28~32%, pH desired values 8.1~9.0.
（2）It is old：The pug that will be kneaded, is sealed with preservative film, old, old 4h；
（3）Pre-filtering is extruded：By old good pug, on pre-filtering extruder, extrusion force 1700~2200N of plasticity, filter screen
Stainless steel filtering net of the mesh specification for 1.0x4mm or 0.8x3mm is used, filtering is extruded into mud bar；
（4）Shaping extrusion：Extrusion molding, extruder control strip are carried out on vacuum-extruder of the front end equipped with SCR moulds
Part is extrusion pressure 7MPa, 35 DEG C, vacuum -0.094MPa or so of extrusion temperature ＜, obtains the wet base of catalyst；
（5）Drying-calcining：By step（4）The obtained wet base of catalyst, is transferred on aluminium alloy pallet, with the glass with heat-preservation cotton
The lid of glass steel material is packaged, and drying temperature is 90 DEG C, and control temperature is incremented by from 30 DEG C by 5 DEG C/h of gradients, is dried
Cycle 5h；Dried catalyst blank is calcined, 1100 DEG C of calcining heat, in calcination process, control temperature is from 100 DEG C
Rise, be incremented by by 100 DEG C/h of gradients, calcination time 18h, obtain ceramic honey comb base substrate.
（6）Starching：Weigh 5 parts of alumina in Nano level, 10 parts of ferric nitrate, 15 parts of manganese nitrate, 5 parts of mullite, biphosphate
5 parts of ammonium, 2 parts of dimethyl silicone polymer, 10 parts of aluminum stearate；5 parts of yttrium nitrate, 8 parts of ammonium metatungstate, 5 parts of cerous nitrate, lanthanum nitrate 4
Part, 3 parts of titanate coupling agent, are dissolved in the aqueous solution containing 1.2 parts of oxalic acid, slurries are than 1 at 70 DEG C:3, add and be warming up to 80 DEG C and protect
Temperature, stirred 1 hour with ultrasonic oscillation, slurry is made；Step 5 gained ceramic honey comb base substrate is put into slurry pool, wraps slurry
Drying oven is put into after material, drying temperature is 70 DEG C, and control temperature is incremented by, arid cycle 20 from 30 DEG C by 5 DEG C/h of gradients
Minute, after striking off the slurry on the outside of ceramic honey comb base substrate and cleaning out, drying oven is reentered into, drying temperature is 90 DEG C, is done
Dry cycle 1h；
（7）Drying-calcining：By step（6）Obtained ceramic honey comb base substrate, is transferred on aluminium alloy pallet, with heat-preservation cotton
The lid of glass steel material is packaged, and is calcined, 550 DEG C of calcining heat, and in calcination process, control temperature is pressed from 100 DEG C
100 DEG C/h of gradients are incremented by, and calcination time 9h, obtain medium temperature ceramic honey comb.
Embodiment 2
A kind of medium temperature denitration catalyst type nanometer accumulation of heat ceramic honey comb is mainly by following components：80 parts of Nano titanium dioxide；Methyl
Methyl acrylate -7 parts of butadiene-styrene copolymer；2 parts of boron nitride；55 parts of silicon dioxide powder；Alumina in Nano level
23 parts；5 parts of glass fibre；0.8 part of stearic acid；0.9 part of high polymer fiber；1 part of aminocellulose passes through catalyst mud
Material is mediated, and catalyst pug is old, catalyst pug extrusion molding, shaping of catalyst, wet base are dry, prepared by calcination process and
Into.
A kind of medium temperature denitration catalyst type nanometer accumulation of heat ceramic honey comb, its preparation method comprise the following steps：
（1）Pug is mediated：
i）Weigh 80 parts of Nano titanium dioxide；Methyl methacrylate -7 parts of butadiene-styrene copolymer；Nitridation
2 parts of boron, 23 parts of alumina in Nano level；0.8 part of stearic acid, 20% ammoniacal liquor regulation pug pH, deionized water：Powder weight ratio is 0.4
~0.6,20min or so is mediated in stirring, and by mediating and adjusting the deionized water of addition, ammoniacal liquor adjusts pug index, and pug is pinched
Close（i）Pug moisture target value 38~45%, pH desired values 7.8~9.4；
ii）1 part of 20% ammoniacal liquor is added, covers stirring machine cap, more than 95 DEG C is heated to while stirring, then opens top cover,
It is concentrated by evaporation pug moisture to pug to be in granular form, the pug moisture target value 25~28%, pH desired values 7.8~8.5；
iii）Add 56 parts of silica successively while stirring, 5 parts of glass fibre, add 20% ammoniacal liquor, stirring 15min or so, institute
State pug moisture target value 29~34%, pH desired values 8.1~9.2；
iv）0.9 part of high polymer fiber is added successively；1 part of aminocellulose, stir more than 10min, the pug moisture
Desired value 28~32%, pH desired values 8.1~9.0.
（2）It is old：The pug that will be kneaded, is sealed with preservative film, old, old 3h；
（3）Pre-filtering is extruded：By old good pug, on pre-filtering extruder, extrusion force 1700~2200N of plasticity, filter screen
Stainless steel filtering net of the mesh specification for 1.0x4mm or 0.8x3mm is used, filtering is extruded into mud bar；
（4）Shaping extrusion：Extrusion molding, extruder control strip are carried out on vacuum-extruder of the front end equipped with SCR moulds
Part is extrusion pressure 7MPa, 35 DEG C, vacuum -0.094MPa or so of extrusion temperature ＜, obtains the wet base of catalyst；
（5）Drying-calcining：By step（4）The obtained wet base of catalyst, is transferred on aluminium alloy pallet, with the glass with heat-preservation cotton
The lid of glass steel material is packaged, and drying temperature is 90 DEG C, and control temperature is incremented by from 30 DEG C by 5 DEG C/h of gradients, is dried
Cycle 5h；Dried catalyst blank is calcined, 1100 DEG C of calcining heat, in calcination process, control temperature is from 100 DEG C
Rise, be incremented by by 100 DEG C/h of gradients, calcination time 21h, obtain ceramic honey comb base substrate.
（6）Starching：Weigh 6 parts of alumina in Nano level, 8 parts of ferric nitrate, 10 parts of manganese nitrate, 9 parts of mullite, ammonium dihydrogen phosphate
8 parts, 1.3 parts of dimethyl silicone polymer, 7 parts of aluminum stearate；4 parts of yttrium nitrate, 7 parts of ammonium metatungstate, 6 parts of cerous nitrate, lanthanum nitrate 3
Part, 3 parts of titanate coupling agent, are dissolved in the aqueous solution containing 2.2 parts of oxalic acid, slurries are than 1 at 85 DEG C:3, add and be warming up to 80 DEG C and protect
Temperature, stirred 1.5 hours with ultrasonic oscillation, slurry is made；Step 5 gained ceramic honey comb base substrate is put into slurry pool, wrapped
Drying oven is put into after slurry, drying temperature is 70 DEG C, and control temperature is incremented by, arid cycle from 30 DEG C by 5 DEG C/h of gradients
25 minutes, after striking off the slurry on the outside of ceramic honey comb base substrate and cleaning out, drying oven is reentered into, drying temperature is 90 DEG C,
Arid cycle 1h；
（7）Drying-calcining：By step（6）Obtained ceramic honey comb base substrate, is transferred on aluminium alloy pallet, with heat-preservation cotton
The lid of glass steel material is packaged, and is calcined, 550 DEG C of calcining heat, and in calcination process, control temperature is pressed from 100 DEG C
100 DEG C/h of gradients are incremented by, and calcination time 8h, obtain medium temperature ceramic honey comb.
Embodiment 3
A kind of medium temperature denitration catalyst type nanometer accumulation of heat ceramic honey comb is mainly by following components：70 parts of Nano titanium dioxide；Methyl
Methyl acrylate -10 parts of butadiene-styrene copolymer；1 part of boron nitride；58 parts of silicon dioxide powder；Nanoscale
28 parts of aluminium；8 parts of glass fibre；1 part of stearic acid；0.9 part of high polymer fiber；1 part of aminocellulose passes through catalyst mud
Material is mediated, and catalyst pug is old, catalyst pug extrusion molding, shaping of catalyst, wet base are dry, prepared by calcination process and
Into.
A kind of medium temperature denitration catalyst type nanometer accumulation of heat ceramic honey comb, its preparation method comprise the following steps：
（1）Pug is mediated：
i）Weigh 70 parts of Nano titanium dioxide, methyl methacrylate -10 parts of butadiene-styrene copolymer, nitrogen
Change 1 part of boron, 28 parts of alumina in Nano level, 1 part of stearic acid, 20% ammoniacal liquor regulation pug pH, deionized water：Powder weight ratio is 0.4
~0.6,20min or so is mediated in stirring, and by mediating and adjusting the deionized water of addition, ammoniacal liquor adjusts pug index, and pug is pinched
Close（i）Pug moisture target value 38~45%, pH desired values 7.8~9.4；
ii）1.5 parts of 20% ammoniacal liquor is added, covers stirring machine cap, is heated to more than 95 DEG C while stirring, then opens top
Lid, it is concentrated by evaporation pug moisture to pug and is in granular form, the pug moisture target value 25~28%, pH desired values 7.8~8.5；
iii）Add 58 parts of silica successively while stirring, 8 parts of glass fibre, add 20% ammoniacal liquor, stirring 15min or so, institute
State pug moisture target value 29~34%, pH desired values 8.1~9.2；
iv）0.9 part of high polymer fiber is added successively；1 part of aminocellulose, stir more than 10min, the pug moisture
Desired value 28~32%, pH desired values 8.1~9.0.
（2）It is old：The pug that will be kneaded, is sealed with preservative film, old, old 3h；
（3）Pre-filtering is extruded：By old good pug, on pre-filtering extruder, extrusion force 1700~2200N of plasticity, filter screen
Stainless steel filtering net of the mesh specification for 1.0x4mm or 0.8x3mm is used, filtering is extruded into mud bar；
（4）Shaping extrusion：Extrusion molding, extruder control strip are carried out on vacuum-extruder of the front end equipped with SCR moulds
Part is extrusion pressure 7MPa, 35 DEG C, vacuum -0.094MPa or so of extrusion temperature ＜, obtains the wet base of catalyst；
（5）Drying-calcining：By step（4）The obtained wet base of catalyst, is transferred on aluminium alloy pallet, with the glass with heat-preservation cotton
The lid of glass steel material is packaged, and drying temperature is 90 DEG C, and control temperature is incremented by from 30 DEG C by 5 DEG C/h of gradients, is dried
Cycle 5h；Dried catalyst blank is calcined, 1100 DEG C of calcining heat, in calcination process, control temperature is from 100 DEG C
Rise, be incremented by by 100 DEG C/h of gradients, calcination time 22h, obtain ceramic honey comb base substrate.
（6）Starching：Weigh 8 parts of alumina in Nano level, 5 parts of ferric nitrate, 5 parts of manganese nitrate, 10 parts of mullite, ammonium dihydrogen phosphate
10 parts, 0.5 part of dimethyl silicone polymer, 6 parts of aluminum stearate；3 parts of yttrium nitrate, 5 parts of ammonium metatungstate, 8 parts of cerous nitrate, lanthanum nitrate 2
Part, 3 parts of titanate coupling agent, are dissolved in the aqueous solution containing 1.2~3.5 parts of oxalic acid, slurries are than 1 at 95 DEG C:3, add and be warming up to 80
DEG C and be incubated, with ultrasonic oscillation stir 2 hours, slurry is made；Step 5 gained ceramic honey comb base substrate is put into slurry pool,
Drying oven is put into after wrapping slurry, drying temperature is 70 DEG C, and control temperature is incremented by from 30 DEG C by 5 DEG C/h of gradients, is dried
In 30 minutes cycles, after striking off the slurry on the outside of ceramic honey comb base substrate and cleaning out, it is reentered into drying oven, drying temperature 90
DEG C, arid cycle 1h；
（7）Drying-calcining：By step（6）Obtained ceramic honey comb base substrate, is transferred on aluminium alloy pallet, with heat-preservation cotton
The lid of glass steel material is packaged, and is calcined, 550 DEG C of calcining heat, and in calcination process, control temperature is pressed from 100 DEG C
100 DEG C/h of gradients are incremented by, and calcination time 7h, obtain medium temperature ceramic honey comb.
1-3 of embodiment of the present invention products obtained therefroms and other Products commercially are contrasted, obtain with
Lower Testing index：
After tested, the compression strength of catalyst of the present invention is axially 29~31MPa, wear-resistant 5.6~5.9cm3, catalyst
Service life had higher intensity and thermal conductivity factor in 5 ~ 6 years, therefore with extensive society and economic value.
Embodiment of the present invention is only the description carried out to the preferred embodiment of the present invention, not to the present invention
Spirit and scope are defined, and on the premise of not departing from the present invention relates to thought, engineers and technicians are to this hair in this area
The various modifications and improvement that bright technical scheme is made, protection scope of the present invention, the claimed skill of the present invention all should be fallen into
Use, all recorded in detail in the claims in art.
Claims (4)
1. a kind of medium temperature denitration catalyst type nanometer accumulation of heat ceramic honey comb, it is characterised in that the catalyst is mainly by following components：Receive
70~85 parts of meter level titanium dioxide；Methyl methacrylate -4~10 parts of butadiene-styrene copolymer；Boron nitride 1
~3 parts；50~60 parts of silicon dioxide powder；20~30 parts of alumina in Nano level；3~8 parts of glass fibre；0.8~1 part of stearic acid；
0.8~1 part of high polymer fiber；0.8~1 part of aminocellulose is mediated by catalyst pug, and catalyst pug is old,
Catalyst pug extrusion molding, shaping of catalyst, wet base are dry, calcination process is prepared.
2. a kind of medium temperature denitration catalyst type nanometer accumulation of heat ceramic honey comb according to claim 1, it is characterised in that it is prepared
Method comprises the following steps：
（1）Pug is mediated：
i）Weigh 70~85 parts of Nano titanium dioxide；Methyl methacrylate-butadiene-styrene copolymer 4~
10 parts；1~3 part of boron nitride；50~60 parts of silicon dioxide powder；20~30 parts of alumina in Nano level；0.8~1 part of stearic acid, 20%
Ammoniacal liquor adjusts pug pH, deionized water：Powder weight ratio is 0.4~0.6, and 20min or so is mediated in stirring, by mediating and adjusting
Deionized water, the ammoniacal liquor regulation pug index of addition, pug are mediated（i）Pug moisture target value 38~45%, pH desired values 7.8
~9.4；
ii）0.5~1.5 part of 20% ammoniacal liquor is added, covers stirring machine cap, more than 95 DEG C is heated to while stirring, then beats
Top cover is opened, pug moisture to pug is concentrated by evaporation and is in granular form, the pug moisture target value 25~28%, pH desired values 7.8~
8.5；
iii）Add silica 1~5 part successively while stirring, 3~8 parts of glass fibre adds 20% ammoniacal liquor, and stirring 15min is left
The right side, the pug moisture target value 29~34%, pH desired values 8.1~9.2；
iv）0.8~1 part of high polymer fiber is added successively；0.8~1 part of aminocellulose, more than 10min is stirred, it is described
Pug moisture target value 28~32%, pH desired values 8.1~9.0；
（2）It is old：The pug that will be kneaded, is sealed with preservative film, old, old 3-4h；
（3）Pre-filtering is extruded：By old good pug, on pre-filtering extruder, extrusion force 1700~2200N of plasticity, filter
It is extruded into mud bar；
（4）Shaping extrusion：Extrusion molding is carried out on vacuum-extruder of the front end equipped with SCR moulds, it is wet to obtain catalyst
Base；
（5）Drying-calcining：By step（5）The obtained wet base of catalyst, is transferred on aluminium alloy pallet, with the glass with heat-preservation cotton
The lid of glass steel material is packaged, and drying temperature is 90 DEG C, and control temperature is incremented by from 30 DEG C by 5 DEG C/h of gradients, is dried
Cycle 5h；Dried catalyst blank is calcined, 1100 DEG C of calcining heat, in calcination process, control temperature is from 100 DEG C
Rise, be incremented by by 100 DEG C/h of gradients, calcination time is 18~22h, obtains ceramic honey comb base substrate；
（6）Starching：Weigh 5~8 parts of alumina in Nano level, 5~10 parts of ferric nitrate, 5~15 parts of manganese nitrate, 5~10 parts of mullite,
5~10 parts of ammonium dihydrogen phosphate, 0.5~2 part of dimethyl silicone polymer, 6~10 parts of aluminum stearate；3~5 parts of yttrium nitrate, metatungstic acid
5~8 parts of ammonium, 5~8 parts of cerous nitrate, 2~4 parts of lanthanum nitrate, 3 parts of titanate coupling agent, are dissolved in containing 1.2~3.5 at 70~95 DEG C
The aqueous solution of part oxalic acid, slurries are than 1:3, add and be warming up to 80 DEG C and be incubated, stirred 1~2 hour with ultrasonic oscillation, slurry is made
Material；Step 5 gained ceramic honey comb base substrate is put into slurry pool, is put into drying oven after wrapping slurry, drying temperature is 70 DEG C, control
Temperature processed is incremented by from 30 DEG C by 5 DEG C/h of gradients, 20~30 minutes arid cycles, strikes off the slurry on the outside of ceramic honey comb base substrate
After expecting and cleaning out, be reentered into drying oven, drying temperature is 90 DEG C, arid cycle 1h；
（7）Drying-calcining：By step（6）Obtained ceramic honey comb base substrate, is transferred on aluminium alloy pallet, with heat-preservation cotton
The lid of glass steel material is packaged, and is calcined, 550 DEG C of calcining heat, and in calcination process, control temperature is pressed from 100 DEG C
100 DEG C/h of gradients are incremented by, and calcination time is 7~9h, obtains medium temperature ceramic honey comb.
A kind of 3. medium temperature denitration catalyst type nanometer accumulation of heat ceramic honey comb according to claim 2, it is characterised in that：Step
（3）Pre-filtering is extruded, and filter screen uses stainless steel filtering net of the mesh specification for 1.0x4mm or 0.8x3mm.
4. medium temperature denitration catalyst type nanometer accumulation of heat ceramic honey comb according to claim 2, it is characterised in that：Step（4）Into
Type is extruded, and extruder control condition is extrusion pressure 7MPa, 35 DEG C of extrusion temperature ＜, vacuum -0.094MPa or so.
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| CN201711299894.9A CN107857599A (en) | 2017-12-09 | 2017-12-09 | A kind of medium temperature denitration catalyst type nanometer accumulation of heat ceramic honey comb |
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|---|---|---|---|
| CN201711299894.9A CN107857599A (en) | 2017-12-09 | 2017-12-09 | A kind of medium temperature denitration catalyst type nanometer accumulation of heat ceramic honey comb |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109289896A (en) * | 2018-11-01 | 2019-02-01 | 大连理工大学 | A kind of monoblock type nitridation B catalyst and application |
| CN113600179A (en) * | 2021-09-16 | 2021-11-05 | 山东博霖环保科技发展有限公司 | Denitration catalyst and preparation method thereof |
| CN115041208A (en) * | 2022-05-17 | 2022-09-13 | 大连理工大学 | Forming method of honeycomb-shaped boron nitride and application of honeycomb-shaped boron nitride in oxidative dehydrogenation of low-carbon alkane |
-
2017
- 2017-12-09 CN CN201711299894.9A patent/CN107857599A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109289896A (en) * | 2018-11-01 | 2019-02-01 | 大连理工大学 | A kind of monoblock type nitridation B catalyst and application |
| CN113600179A (en) * | 2021-09-16 | 2021-11-05 | 山东博霖环保科技发展有限公司 | Denitration catalyst and preparation method thereof |
| CN115041208A (en) * | 2022-05-17 | 2022-09-13 | 大连理工大学 | Forming method of honeycomb-shaped boron nitride and application of honeycomb-shaped boron nitride in oxidative dehydrogenation of low-carbon alkane |
| CN115041208B (en) * | 2022-05-17 | 2024-02-23 | 大连理工大学 | Forming method of honeycomb boron nitride and application of honeycomb boron nitride in oxidative dehydrogenation of low-carbon alkane |
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Application publication date: 20180330 |