CN107986762A - A kind of high intensity medium temperature rare earth denitration catalyst formulation accumulation of heat ceramic honey comb - Google Patents
A kind of high intensity medium temperature rare earth denitration catalyst formulation accumulation of heat ceramic honey comb Download PDFInfo
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- CN107986762A CN107986762A CN201711299919.5A CN201711299919A CN107986762A CN 107986762 A CN107986762 A CN 107986762A CN 201711299919 A CN201711299919 A CN 201711299919A CN 107986762 A CN107986762 A CN 107986762A
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- Prior art keywords
- parts
- pug
- honey comb
- ceramic honey
- drying
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- 239000003054 catalyst Substances 0.000 title claims abstract description 51
- 241000264877 Hippospongia communis Species 0.000 title claims abstract description 43
- 239000000919 ceramic Substances 0.000 title claims abstract description 43
- 238000009825 accumulation Methods 0.000 title claims abstract description 16
- 239000000203 mixture Substances 0.000 title claims abstract description 15
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 15
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 15
- 238000009472 formulation Methods 0.000 title claims abstract description 13
- 238000001354 calcination Methods 0.000 claims abstract description 51
- 238000001035 drying Methods 0.000 claims abstract description 37
- 239000002002 slurry Substances 0.000 claims abstract description 36
- 238000001125 extrusion Methods 0.000 claims abstract description 33
- 230000032683 aging Effects 0.000 claims abstract description 26
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 26
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims abstract description 22
- 229920000742 Cotton Polymers 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 19
- 230000008569 process Effects 0.000 claims abstract description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 13
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 13
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000008117 stearic acid Substances 0.000 claims abstract description 13
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229920001131 Pulp (paper) Polymers 0.000 claims abstract description 11
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 11
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 11
- 229920001577 copolymer Polymers 0.000 claims abstract description 11
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 11
- 239000013078 crystal Substances 0.000 claims abstract description 11
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 11
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 11
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 11
- CMPGARWFYBADJI-UHFFFAOYSA-L tungstic acid Chemical compound O[W](O)(=O)=O CMPGARWFYBADJI-UHFFFAOYSA-L 0.000 claims abstract description 11
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- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims abstract description 10
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims abstract description 10
- 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 claims abstract description 10
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000005470 impregnation Methods 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 35
- 238000001914 filtration Methods 0.000 claims description 20
- 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 20
- 230000001404 mediated effect Effects 0.000 claims description 20
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 19
- 239000000908 ammonium hydroxide Substances 0.000 claims description 19
- 239000000758 substrate Substances 0.000 claims description 19
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- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 12
- 229910052593 corundum Inorganic materials 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 12
- 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 10
- 229910000838 Al alloy Inorganic materials 0.000 claims description 10
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 10
- 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 10
- 239000007822 coupling agent Substances 0.000 claims description 10
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims description 10
- 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 10
- 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 10
- 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 10
- 229910052863 mullite Inorganic materials 0.000 claims description 10
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- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 claims description 8
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 8
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims description 8
- 239000008367 deionised water Substances 0.000 claims description 8
- 229910021641 deionized water Inorganic materials 0.000 claims description 8
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 8
- 238000007493 shaping process Methods 0.000 claims description 7
- 238000009955 starching Methods 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-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
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 claims description 5
- 230000008020 evaporation Effects 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 230000010355 oscillation Effects 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
- 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
- 239000002253 acid Substances 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 244000025254 Cannabis sativa Species 0.000 claims description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N monobenzene Natural products C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N Formic acid Chemical class OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims 1
- 238000005242 forging Methods 0.000 claims 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims 1
- -1 phthalic acid ester Chemical class 0.000 abstract description 8
- XNGIFLGASWRNHJ-UHFFFAOYSA-N o-dicarboxybenzene Natural products OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 abstract description 5
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 9
- DCXXMTOCNZCJGO-UHFFFAOYSA-N tristearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(OC(=O)CCCCCCCCCCCCCCCCC)COC(=O)CCCCCCCCCCCCCCCCC DCXXMTOCNZCJGO-UHFFFAOYSA-N 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 235000006408 oxalic acid Nutrition 0.000 description 3
- 241001408630 Chloroclystis Species 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- WWILHZQYNPQALT-UHFFFAOYSA-N 2-methyl-2-morpholin-4-ylpropanal Chemical compound O=CC(C)(C)N1CCOCC1 WWILHZQYNPQALT-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- HIVLDXAAFGCOFU-UHFFFAOYSA-N ammonium hydrosulfide Chemical compound [NH4+].[SH-] HIVLDXAAFGCOFU-UHFFFAOYSA-N 0.000 description 1
- 230000001458 anti-acid effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
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- 230000001351 cycling effect Effects 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- GFNGCDBZVSLSFT-UHFFFAOYSA-N titanium vanadium Chemical compound [Ti].[V] GFNGCDBZVSLSFT-UHFFFAOYSA-N 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
- C04B35/10—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 aluminium oxide
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- 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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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- 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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- 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
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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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Abstract
The invention discloses a kind of high intensity medium temperature rare earth denitration catalyst formulation accumulation of heat ceramic honey comb, belong to catalysis technical field；The denitrating catalyst is mainly by following components：TiC35~40 part, Al2O370~80 part, 5~10 parts of tungstic acid, SiO25~8 parts, calcium sulfate crystal whiskers be 10~15 parts, 2~3 parts of wood pulp cotton, 2~4 parts of silicon nitride, 3~6 parts of haloflex, methyl methacrylate -3~5 parts of butadiene-styrene copolymer, 10~12 parts of hydroxypropyl methyl cellulose, 2~3 parts of phthalic acid ester, 2~3 parts of monoethanolamine, 1~3 part of stearic acid mediate by pug, aging, extrusion molding, drying and calcining, impregnation catalyst slurry, drying is prepared with calcination process again.
Description
Technical field
The present invention relates to denitration prepared by a kind of high intensity medium temperature rare earth denitration catalyst formulation accumulation of heat ceramic honey comb, the present invention
Catalyst, possess good mechanical strength, antiacid corrosive power, thermal shock resistance, is adaptable to coal-burning boiler, fired power generating unit
In air preheater, steel is stepped on to substitute the original paper that exchanges heat in air preheater to examine, has good heat exchange property, denitration activity and wider temperature concurrently
Window.
Background technology
In recent years, the energy and associated environment become the hot spot that whole world various countries are paid close attention to the most.China is due to per capita
Energy resources shortage, environmental carrying capacity is limited, ecology fragility, by the great sustainable development for restricting China.Domestic GDP is annual
High speed development, the hurried increase of energy consumption, environment, ecology are worsening.It is energy-saving to become the big master for solving energy problem
Offense to.According to statistics, domestic industrial department energy-output ratio accounts for the 70% of national energy total amount.Wherein Industrial Stoves are China
Big power consumer, accounts for the 25% of national total energy consumption, low energy utilization rate is to cause industrial furnace to consume energy one of the main reason for big.
Compared with the industrial furnace of developed country, the domestic Industrial Stoves thermal efficiency that is averaged wants low 20% or so, the energy of waste
Equivalent to 200,000,000 tons of source standard coal, it is seen that Industrial Stoves energy-saving potential is very huge.
Heat exchange original paper material used in the air preheater in Industrial Stoves steps on steel to examine at present, examines and steps on steel with machinery
The advantages that intensity is high, cracky, heat exchange rate be not fast, thermal capacitance is big, but in use, examine step on steel surface enamel it is easily de-
Fall, the sulfuric acid corrosion formed by ammonium hydrogen sulfate or condensation is very easy to after the naked leakage of steel, especially national coal-burning power plant is complete
Implement after minimum discharge in face.To make the nitrous oxides concentration after denitration process reach minimum discharge standard, at present, the drop of mainstream
Low NOx drainage method is to increase by one layer of catalyst, can so cause system resistance, air preheater resistance to improve, SO2To SO3
Conversion ratio rise, aerosol discharge increase, cause the escaping of ammonia increase, corrosion and clogging increase etc..
In use, heat exchange element slowly rotates air preheater, and the higher flue gas of temperature and cold air alternately flow
Through heat exchange element, periodically exchanged heat.In a heat-exchange periodic, the Temperature cycling change of heat exchange element, is selected dilute
Earth elements Ce, La have wider denitration activity temperature range as active component.
Traditional vanadium titanium system denitrating catalyst, active temperature windows are relatively narrow（320~400 DEG C）, easily by SO in operational process2
It is poisoned, activity is relatively low under low temperature, and is also easy to produce sulphur ammonium, and blocking catalyst hole and air preheater and upstream device, cause 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 range is narrow, intensity
Low, service life is short；So that application range 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 high intensity medium temperature rare earth denitration catalyst formulation accumulation of heat ceramic honey comb, is asked with solving above-mentioned technology
Topic.
In order to solve the above technical problems, the technical solution that the present invention program uses is：A kind of high intensity medium temperature rare earth denitration
Catalyst type accumulation of heat ceramic honey comb, it is characterised in that the denitrating catalyst is mainly by following components：TiC35~40 part, Al2O370
~80 parts, 5~10 parts of tungstic acid, SiO25~8 parts, calcium sulfate crystal whiskers for 10~15 parts, 2~3 parts of wood pulp cotton, silicon nitride 2~
4 parts, 3~6 parts of haloflex, methyl methacrylate -3~5 parts of butadiene-styrene copolymer, hydroxypropyl first
10~12 parts of base cellulose, 2~3 parts of phthalic acid ester, 2~3 parts of monoethanolamine, 1~3 part of stearic acid are mediated by pug,
Aging, extrusion molding, drying and calcining, impregnation catalyst slurry, drying is prepared with calcination process again.
The catalysis slurry is composed of the following components：5~8 parts of mullite, 5~10 parts of ferric nitrate, 5~15 parts of manganese nitrate,
Al2O35~10 part, 5~10 parts of ammonium dihydrogen phosphate, 0.5~2 part of dimethyl silicone polymer, 6~10 parts of aluminum stearate；Yttrium nitrate 3
~5 parts, 5~8 parts of ammonium metatungstate, 5~8 parts of cerous nitrate, 2~4 parts of lanthanum nitrate, 3 parts of titanate coupling agent.
A kind of high intensity medium temperature rare earth denitration catalyst formulation accumulation of heat ceramic honey comb, its preparation method comprise the following steps：
（1）Pug is mediated：
i）Weigh TiC, Al2O3, tungstic acid, SiO2, calcium sulfate crystal whiskers be, stearic acid, monoethanolamine, methyl methacrylate
Ester-butadiene-styrene copolymer, 20% ammonium hydroxide adjust 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, ammonium hydroxide adjusts pug index, and pug is mediated（i）Mud
Expect moisture target value 38~45%, pH desired values 7.8~9.4；
ii）0.5~1.5 part of 20% ammonium hydroxide is added, covers stirring machine cap, more than 95 DEG C is heated to while stirring, then beats
Head 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 wood pulp cotton successively while stirring, silicon nitride, adds 20% ammonium hydroxide, stirring 15min or so, the pug moisture
Desired value 29~34%, pH desired values 8.1~9.2；
iv）Haloflex, hydroxypropyl methyl cellulose are added successively, stir more than 10min, the pug moisture target value 28
~32%, pH desired value 8.1~9.0；
（2）It is aging：The pug that will be kneaded, is sealed with preservative film, aging, aging 3-4h；
（3）Pre-filtering is extruded：By aging good pug, on pre-filtering extruder, extrusion force 1700~2200N of plasticity, is filtered
It is extruded into mud bar；
（4）Shaping extrusion：Extrusion molding is carried out on vacuum-extruder of the front end equipped with SCR molding dies, 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 box lid of glass steel material packages, and drying temperature is 90 DEG C, and control temperature is incremented by from 30 DEG C by 5 DEG C/h of gradients, dry
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 mullite, ferric nitrate, manganese nitrate, Al2O3, ammonium dihydrogen phosphate, dimethyl silicone polymer, stearic acid
Aluminium, yttrium nitrate, ammonium metatungstate, cerous nitrate, lanthanum nitrate, titanate coupling agent, are dissolved at 70~95 DEG C containing 1.2~3.5 parts of grass
The aqueous solution of acid, slurries are than 1:3, add and be warming up to 80 DEG C and keep the temperature, with ultrasonic oscillation stirring 1~2 it is small when, be made catalysis slurry
Material；Step 5 gained ceramic honey comb base substrate is put into catalysis slurry pool, drying oven, drying temperature are put into after wrapping catalysis slurry
For 70 DEG C, control temperature is incremented by by 5 DEG C/h of gradients from 30 DEG C, 20~30 minutes arid cycles, strikes off ceramic honey comb base
The catalysis slurry of external 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 box lid of glass steel material packages, 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 strainer 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 fires by medium temperature and forms.The present invention improves the anti-caking power of catalyst, is conducive to improve catalyst thermostabilization
Property；Be adaptable to coal-burning boiler, fired power generating unit air preheater in；Al2O3 has been used widely as heat-storing material, is storing
The amplitude of temperature change is also very big during hot material use, also without discovery heat-storing material rupture, therefore can fully meet work
For the requirement of catalyst carrier.Therefore, if the Al2O3 honeycomb ceramic carriers of selection low cost, can obviously reduce catalyst
Cost, simultaneously as integral catalyzer is axial heat conduction, using the heat accumulation function of Al2O3 honeycomb ceramic carriers, raising is urged
The uniformity of agent temperature, improves catalytic performance.Denitration rate of the present invention in the environment of medium temperature is high, and reaction condition is gentle,
To environment without any pollution.
Embodiment
For the ease of understanding the present invention, the present invention is described more fully in 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 high intensity medium temperature rare earth denitration catalyst formulation accumulation of heat ceramic honey comb is mainly by following components：TiC35 parts, Al2O380
Part, 5 parts of tungstic acid, SiO28 parts, calcium sulfate crystal whiskers for 10 parts, 2 parts of wood pulp cotton, 4 parts of silicon nitride, 3 parts of haloflex, first
Base methyl acrylate -5 parts of butadiene-styrene copolymer, 10 parts of hydroxypropyl methyl cellulose, phthalic acid ester 3
Part, 2 parts of monoethanolamine, 3 parts of stearic acid are mediated by pugs, aging, extrusion molding, drying and calcining, impregnation catalyst slurry, again
Secondary drying is prepared with calcination process.
The catalysis slurry is made of following components：5 parts of mullite, 10 parts of ferric nitrate, 15 parts of manganese nitrate, Al2O35 parts,
5 parts of ammonium dihydrogen phosphate, 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,
4 parts of lanthanum nitrate, 3 parts of titanate coupling agent.
Its preparation method comprises the following steps：
（1）Pug is mediated：
i）Weigh TiC, Al2O3, tungstic acid, SiO2, calcium sulfate crystal whiskers, stearic acid, monoethanolamine, methyl methacrylate-
Butadiene-styrene copolymer, 20% ammonium hydroxide adjust pug pH, deionized water：Powder weight ratio is 0.4~0.6, stirring
20min or so is mediated, by mediating and adjusting the deionized water of addition, ammonium hydroxide adjusts pug index, and pug is mediated（i）Pug water
Subhead scale value 38~45%, pH desired values 7.8~9.4；
ii）0.5 part of 20% ammonium hydroxide is added, covers stirring machine cap, is heated to more than 95 DEG C while stirring, then opens top
Lid, 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 wood pulp cotton successively while stirring, silicon nitride, adds 20% ammonium hydroxide, stirring 15min or so, the pug moisture
Desired value 29~34%, pH desired values 8.1~9.2；
iv）Haloflex, hydroxypropyl methyl cellulose are added successively, stir more than 10min, the pug moisture target value 28
~32%, pH desired value 8.1~9.0.
（2）It is aging：The pug that will be kneaded, is sealed with preservative film, aging, aging 4h；
（3）Pre-filtering is extruded：By aging good pug, on pre-filtering extruder, extrusion force 1700~2200N of plasticity, strainer
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 molding dies
Part is extrusion pressure 7MPa, and 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 box lid of glass steel material packages, and drying temperature is 90 DEG C, and control temperature is incremented by from 30 DEG C by 5 DEG C/h of gradients, dry
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, obtains ceramic honey comb base substrate.
（6）Starching：Weigh mullite, ferric nitrate, manganese nitrate, Al2O3, ammonium dihydrogen phosphate, dimethyl silicone polymer, tristearin
Sour aluminium, yttrium nitrate, ammonium metatungstate, cerous nitrate, lanthanum nitrate, titanate coupling agent, are dissolved in water-soluble containing 1.2 parts of oxalic acid at 70 DEG C
Liquid, slurries are than 1:3, add and be warming up to 80 DEG C and keep the temperature, with ultrasonic oscillation stirring 1 it is small when, catalysis slurry is made；By step 5 institute
Obtain ceramic honey comb base substrate to be put into catalysis slurry pool, be put into drying oven after wrapping catalysis slurry, drying temperature is 70 DEG C, and control is warm
Degree is incremented by, 20 minutes arid cycles from 30 DEG C by 5 DEG C/h of gradients, strikes off catalysis slurry on the outside of ceramic honey comb base substrate simultaneously
After 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 box lid of glass steel material packages, 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, obtains medium temperature ceramic honey comb.Products obtained therefrom physical dimension is 150x150x
（500~1250）Mm, aperture are 5~8mm, and interior 0.7~1.2mm of wall thickness, geometry specific surface area is 360~700m2/m3.
Embodiment 2
A kind of high intensity medium temperature rare earth denitration catalyst formulation accumulation of heat ceramic honey comb is mainly by following components：TiC38 parts, Al2O375
Part, 7 parts of tungstic acid, SiO26 parts, calcium sulfate crystal whiskers for 14 parts, 3 parts of wood pulp cotton, 3 parts of silicon nitride, 5 parts of haloflex, first
Base methyl acrylate -4 parts of butadiene-styrene copolymer, 11 parts of hydroxypropyl methyl cellulose, phthalic acid ester 2
Part, 3 parts of monoethanolamine, 2 parts of stearic acid are mediated by pugs, aging, extrusion molding, drying and calcining, impregnation catalyst slurry, again
Secondary drying is prepared with calcination process.
The catalysis slurry consists of the following compositions：6 parts of mullite, 8 parts of ferric nitrate, 10 parts of manganese nitrate, Al2O39 parts, phosphorus
8 parts of acid dihydride ammonium, 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,
3 parts of lanthanum nitrate, 3 parts of titanate coupling agent.
Its preparation method comprises the following steps：
（1）Pug is mediated：
i）Weigh TiC38 parts, Al2O375 parts, 7 parts of tungstic acid, SiO26 parts, calcium sulfate crystal whiskers be 14 parts, it is 2 parts of stearic acid, single
3 parts of monoethanolamine, methyl methacrylate -4 parts of butadiene-styrene copolymer, 20% ammonium hydroxide adjust pug pH, go from
Sub- water：Powder weight ratio is 0.4~0.6, and 20min or so is mediated in stirring, by deionized water, the ammonium hydroxide of mediating and adjust addition
Pug index is adjusted, pug is mediated（i）Pug moisture target value 38~45%, pH desired values 7.8~9.4；
ii）1 part of 20% ammonium hydroxide is added, covers stirring machine cap, more than 95 DEG C is heated to while stirring, then opens head 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 3 parts of wood pulp cotton successively while stirring, 5 parts of silicon nitride, adds 20% ammonium hydroxide, stirring 15min or so, the mud
Expect moisture target value 29~34%, pH desired values 8.1~9.2；
iv）5 parts of haloflex, 5 parts of hydroxypropyl methyl cellulose are added successively, stir more than 10min, the pug moisture mesh
Scale value 28~32%, pH desired values 8.1~9.0.
（2）It is aging：The pug that will be kneaded, is sealed with preservative film, aging, aging 3h；
（3）Pre-filtering is extruded：By aging good pug, on pre-filtering extruder, extrusion force 1700~2200N of plasticity, strainer
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 molding dies
Part is extrusion pressure 7MPa, and 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 box lid of glass steel material packages, and drying temperature is 90 DEG C, and control temperature is incremented by from 30 DEG C by 5 DEG C/h of gradients, dry
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, obtains ceramic honey comb base substrate.
（6）Starching：Weigh mullite, ferric nitrate, manganese nitrate, Al2O3, ammonium dihydrogen phosphate, dimethyl silicone polymer, tristearin
Sour aluminium, yttrium nitrate, ammonium metatungstate, cerous nitrate, lanthanum nitrate, titanate coupling agent, are dissolved in water-soluble containing 2.2 parts of oxalic acid at 85 DEG C
Liquid, slurries are than 1:3, add and be warming up to 80 DEG C and keep the temperature, with ultrasonic oscillation stirring 1.5 it is small when, catalysis slurry is made；By step 5
Gained ceramic honey comb base substrate is put into catalysis slurry pool, is put into drying oven after wrapping catalysis slurry, drying temperature is 70 DEG C, control
Temperature is incremented by from 30 DEG C by 5 DEG C/h of gradients, and 25 minutes arid cycles, strike off the catalysis slurry on the outside of ceramic honey comb base substrate
And after 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 box lid of glass steel material packages, 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, obtains medium temperature ceramic honey comb.Products obtained therefrom physical dimension is 150x150x
（500~1250）Mm, aperture are 5~8mm, and interior 0.7~1.2mm of wall thickness, geometry specific surface area is 360~700m2/m3.
Embodiment 3
A kind of high intensity medium temperature rare earth denitration catalyst formulation accumulation of heat ceramic honey comb is mainly by following components：TiC40 parts, Al2O370
Part, 10 parts of tungstic acid, SiO25 parts, calcium sulfate crystal whiskers for 15 parts, 3 parts of wood pulp cotton, 2 parts of silicon nitride, 6 parts of haloflex, first
Base methyl acrylate -3 parts of butadiene-styrene copolymer, 12 parts of hydroxypropyl methyl cellulose, phthalic acid ester 2
Part, 2 parts of monoethanolamine, 1 part of stearic acid are mediated by pug, aging, extrusion molding, drying and calcining, impregnation catalyst slurry, again
Secondary drying is prepared with calcination process.
The catalysis slurry consists of the following compositions：8 parts of mullite, 5 parts of ferric nitrate, 5 parts of manganese nitrate, Al2O310 parts, phosphorus
10 parts of acid dihydride ammonium, 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,
2 parts of lanthanum nitrate, 3 parts of titanate coupling agent.
（1）Pug is mediated：
i）Weigh TiC40 parts, Al2O380 parts, 10 parts of tungstic acid, SiO25 parts, calcium sulfate crystal whiskers for 15 parts, 1 part of stearic acid,
2 parts of monoethanolamine, methyl methacrylate -3 parts of butadiene-styrene copolymer, 20% ammonium hydroxide adjust pug pH, go
Ionized water：Powder weight ratio is 0.4~0.6, and 20min or so is mediated in stirring, by deionized water, the ammonia of mediating and adjust addition
Water adjusts pug index, and pug is mediated（i）Pug moisture target value 38~45%, pH desired values 7.8~9.4；
ii）1.5 parts of 20% ammonium hydroxide is added, covers stirring machine cap, is heated to more than 95 DEG C while stirring, then opens top
Lid, 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 3 parts of wood pulp cotton successively while stirring, 5 parts of silicon nitride, adds 20% ammonium hydroxide, stirring 15min or so, the mud
Expect moisture target value 29~34%, pH desired values 8.1~9.2；
iv）6 parts of haloflex, 3 parts of hydroxypropyl methyl cellulose are added successively, stir more than 10min, the pug moisture mesh
Scale value 28~32%, pH desired values 8.1~9.0.
（2）It is aging：The pug that will be kneaded, is sealed with preservative film, aging, aging 3h；
（3）Pre-filtering is extruded：By aging good pug, on pre-filtering extruder, extrusion force 1700~2200N of plasticity, strainer
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 molding dies
Part is extrusion pressure 7MPa, and 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 box lid of glass steel material packages, and drying temperature is 90 DEG C, and control temperature is incremented by from 30 DEG C by 5 DEG C/h of gradients, dry
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, obtains ceramic honey comb base substrate.
（6）Starching：Weigh mullite, ferric nitrate, manganese nitrate, Al2O3, ammonium dihydrogen phosphate, dimethyl silicone polymer, tristearin
Sour aluminium, yttrium nitrate, ammonium metatungstate, cerous nitrate, lanthanum nitrate, titanate coupling agent, are dissolved at 95 DEG C containing 1.2~3.5 parts of oxalic acid
Aqueous solution, slurries are than 1:3, add and be warming up to 80 DEG C and keep the temperature, with ultrasonic oscillation stirring 2 it is small when, catalysis slurry is made；Will step
Rapid 5 gained ceramic honey comb base substrate is put into catalysis slurry pool, and drying oven is put into after wrapping catalysis slurry, and drying temperature is 70 DEG C,
Temperature is controlled to be incremented by by 5 DEG C/h of gradients from 30 DEG C, 30 minutes arid cycles, strike off the catalysis on the outside of ceramic honey comb base substrate
Slurry 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 box lid of glass steel material packages, 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, obtains medium temperature ceramic honey comb.Products obtained therefrom physical dimension is 150x150x
（500~1250）Mm, aperture are 5~8mm, and interior 0.7~1.2mm of wall thickness, geometry specific surface area is 360~700m2/m3.
1-3 of embodiment of the present invention products obtained therefroms and other Products commercially are contrasted, obtain with
Lower Testing index：
After tested, it is 40~43MPa, wear-resistant 3.9~4.2cm that the compression strength of catalyst of the present invention is axial3, catalyst
Service life had higher intensity and thermal conductivity factor in 6 ~ 7 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 solution is made, should all fall into protection scope of the present invention, the claimed skill of the present invention
Use, all recorded in detail in the claims in art.
Claims (4)
- A kind of 1. high intensity medium temperature rare earth denitration catalyst formulation accumulation of heat ceramic honey comb, it is characterised in that the denitrating catalyst mainly by Following components：The denitrating catalyst is mainly by following components：TiC35~40 part, Al2O370~80 parts, 5~10 parts of tungstic acid, SiO25~8 parts, calcium sulfate crystal whiskers for 10~15 parts, 2~3 parts of wood pulp cotton, 2~4 parts of silicon nitride, 3~6 parts of haloflex, first Base methyl acrylate -3~5 parts of butadiene-styrene copolymer, 10~12 parts of hydroxypropyl methyl cellulose, adjacent benzene two 2~3 parts of formic acid esters, 2~3 parts of monoethanolamine, 1~3 part of stearic acid are mediated by pug, and aging, extrusion molding, drying are with forging Burning, impregnation catalyst slurry, drying is prepared with calcination process again；The catalysis slurry is composed of the following components：5~8 parts of mullite, 5~10 parts of ferric nitrate, 5~15 parts of manganese nitrate, Al2O35~10 part, 5~10 parts of ammonium dihydrogen phosphate, 0.5~2 part of dimethyl silicone polymer, 6~10 parts of aluminum stearate；Yttrium nitrate 3 ~5 parts, 5~8 parts of ammonium metatungstate, 5~8 parts of cerous nitrate, 2~4 parts of lanthanum nitrate, 3 parts of titanate coupling agent.
- 2. a kind of high intensity medium temperature rare earth denitration catalyst formulation accumulation of heat ceramic honey comb according to claim 1, its feature exist Comprise the following steps in its preparation method：（1）Pug is mediated：i）Weigh TiC, Al2O3, tungstic acid, SiO2, calcium sulfate crystal whiskers be, stearic acid, monoethanolamine, methyl methacrylate Ester-butadiene-styrene copolymer, 20% ammonium hydroxide adjust 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, ammonium hydroxide adjusts pug index, and pug is mediated（i）Mud Expect moisture target value 38~45%, pH desired values 7.8~9.4；ii）0.5~1.5 part of 20% ammonium hydroxide is added, covers stirring machine cap, more than 95 DEG C is heated to while stirring, then beats Head 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 wood pulp cotton successively while stirring, silicon nitride, adds 20% ammonium hydroxide, stirring 15min or so, the pug moisture Desired value 29~34%, pH desired values 8.1~9.2；iv）Haloflex, hydroxypropyl methyl cellulose are added successively, stir more than 10min, the pug moisture target value 28 ~32%, pH desired value 8.1~9.0；（2）It is aging：The pug that will be kneaded, is sealed with preservative film, aging, aging 3-4h；（3）Pre-filtering is extruded：By aging good pug, on pre-filtering extruder, extrusion force 1700~2200N of plasticity, is filtered It is extruded into mud bar；（4）Shaping extrusion：Extrusion molding is carried out on vacuum-extruder of the front end equipped with SCR molding dies, 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 box lid of glass steel material packages, and drying temperature is 90 DEG C, and control temperature is incremented by from 30 DEG C by 5 DEG C/h of gradients, dry 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 mullite, ferric nitrate, manganese nitrate, Al2O3, ammonium dihydrogen phosphate, dimethyl silicone polymer, stearic acid Aluminium, yttrium nitrate, ammonium metatungstate, cerous nitrate, lanthanum nitrate, titanate coupling agent, are dissolved at 70~95 DEG C containing 1.2~3.5 parts of grass The aqueous solution of acid, slurries are than 1:3, add and be warming up to 80 DEG C and keep the temperature, with ultrasonic oscillation stirring 1~2 it is small when, be made catalysis slurry Material；Step 5 gained ceramic honey comb base substrate is put into catalysis slurry pool, drying oven, drying temperature are put into after wrapping catalysis slurry For 70 DEG C, control temperature is incremented by by 5 DEG C/h of gradients from 30 DEG C, 20~30 minutes arid cycles, strikes off ceramic honey comb base The catalysis slurry of external 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 box lid of glass steel material packages, 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.
- 3. a kind of high intensity medium temperature rare earth denitration catalyst formulation accumulation of heat ceramic honey comb according to claim 2, its feature exist In：Step（3）Pre-filtering is extruded, and strainer uses stainless steel filtering net of the mesh specification for 1.0x4mm or 0.8x3mm.
- 4. high intensity medium temperature rare earth denitration catalyst formulation accumulation of heat ceramic honey comb according to claim 2, it is characterised in that：Step Suddenly（4）Shaping extrusion, extruder control condition is extrusion pressure 7MPa, and 35 DEG C of extrusion temperature ＜, vacuum -0.094MPa are left It is right.
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