CN101371970A - Catalyst and preparation method thereof suitable for denitration of flue gas containing alkali metal oxide - Google Patents
Catalyst and preparation method thereof suitable for denitration of flue gas containing alkali metal oxide Download PDFInfo
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- CN101371970A CN101371970A CNA2008101966381A CN200810196638A CN101371970A CN 101371970 A CN101371970 A CN 101371970A CN A2008101966381 A CNA2008101966381 A CN A2008101966381A CN 200810196638 A CN200810196638 A CN 200810196638A CN 101371970 A CN101371970 A CN 101371970A
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- 239000003054 catalyst Substances 0.000 title claims abstract description 68
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- 229910000272 alkali metal oxide Inorganic materials 0.000 title claims abstract description 18
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims description 18
- 239000003546 flue gas Substances 0.000 title claims description 18
- 239000002002 slurry Substances 0.000 claims abstract description 20
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 9
- XAYGUHUYDMLJJV-UHFFFAOYSA-Z decaazanium;dioxido(dioxo)tungsten;hydron;trioxotungsten Chemical compound [H+].[H+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O XAYGUHUYDMLJJV-UHFFFAOYSA-Z 0.000 claims abstract description 7
- 229920000609 methyl cellulose Polymers 0.000 claims abstract description 7
- 239000001923 methylcellulose Substances 0.000 claims abstract description 7
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims abstract description 4
- UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical compound [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 8
- 239000012153 distilled water Substances 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 239000004408 titanium dioxide Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 4
- 238000001354 calcination Methods 0.000 claims description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 3
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 3
- 229940037003 alum Drugs 0.000 claims description 3
- ZXVOCOLRQJZVBW-UHFFFAOYSA-N azane;ethanol Chemical compound N.CCO ZXVOCOLRQJZVBW-UHFFFAOYSA-N 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- LNAZSHAWQACDHT-XIYTZBAFSA-N (2r,3r,4s,5r,6s)-4,5-dimethoxy-2-(methoxymethyl)-3-[(2s,3r,4s,5r,6r)-3,4,5-trimethoxy-6-(methoxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6r)-4,5,6-trimethoxy-2-(methoxymethyl)oxan-3-yl]oxyoxane Chemical compound CO[C@@H]1[C@@H](OC)[C@H](OC)[C@@H](COC)O[C@H]1O[C@H]1[C@H](OC)[C@@H](OC)[C@H](O[C@H]2[C@@H]([C@@H](OC)[C@H](OC)O[C@@H]2COC)OC)O[C@@H]1COC LNAZSHAWQACDHT-XIYTZBAFSA-N 0.000 claims description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 5
- 231100000572 poisoning Toxicity 0.000 abstract description 4
- 230000000607 poisoning effect Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000011152 fibreglass Substances 0.000 abstract 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 abstract 1
- 239000001164 aluminium sulphate Substances 0.000 abstract 1
- 235000011128 aluminium sulphate Nutrition 0.000 abstract 1
- BUACSMWVFUNQET-UHFFFAOYSA-H dialuminum;trisulfate;hydrate Chemical compound O.[Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O BUACSMWVFUNQET-UHFFFAOYSA-H 0.000 abstract 1
- 239000011344 liquid material Substances 0.000 abstract 1
- 235000010981 methylcellulose Nutrition 0.000 abstract 1
- 239000011812 mixed powder Substances 0.000 abstract 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 abstract 1
- 239000000779 smoke Substances 0.000 abstract 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 9
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 5
- 229910052939 potassium sulfate Inorganic materials 0.000 description 5
- 235000011151 potassium sulphates Nutrition 0.000 description 5
- 229910052938 sodium sulfate Inorganic materials 0.000 description 5
- 235000011152 sodium sulphate Nutrition 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 2
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 235000011187 glycerol Nutrition 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- -1 alkali metal salt Chemical class 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical compound [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Abstract
The present invention provides a catalyst fit for denitrating smoke containing alkali metal oxide and a preparation method thereof. The catalyst consists of 70.0 percent to 72.0 percent of anatase titanium dioxide, 1.2 percent to 1.5 percent of ammonium metavanadate, 6.9 percent to 7.1 percent of ammonium paratungstate, 3.2 percent to 3.6 percent of silica sol, 5.0 percent to 6.0 percent of fiberglass yarn, 3.2 percent to 3.6 percent of methyl cellulose, 1.4 percent to 1.8 percent of polyethylene oxide, 3.5 percent to 3.8 percent of mono ethanol amine and 3.5 percent to 3.8 percent of aluminium sulphate by weight percentage. For the preparation, firstly, powder material is mixed uniformly; liquid material is mixed uniformly, and fiberglass yarn is added to be stirred uniformly to obtain slurry; the mixed powder is added into the slurry to be stirred uniformly to obtain the slurry; and the slurry is made into a catalyst blank which is dried and calcined to obtain a catalyst finished product. The catalyst has high capability of preventing alkali metal oxide poisoning and has good chemical stability and thermal stability, long service life, low operation expense, simple production technology and low preparation cost.
Description
Technical field
The invention belongs to environmental technology field, particularly a kind of denitrating flue gas of alkali metal oxides such as containing sodium, potassium that is applicable to is handled employed Catalysts and its preparation method.
Background technology
Selective catalytic reduction (SCR method) with characteristics such as its denitration efficiency height that has, technology maturations, and is used more at present domestic and international denitrating flue gas engineering.The SCR method is reducing agent (NH
3, urea) under catalyst action, optionally with flue gas in NO
xReaction generates N
2And H
2O, and not by O
2Oxidation is so be called " back-and-forth method ".Catalyst is the capital equipment in the SCR system, and its one-tenth is grouped into, structure, life-span and relevant parameter directly influence SCR system denitration efficiency and operation conditions.Catalyst commonly used at present is with metal oxide containing precious metals V
2O
5, WO
3Be carried on TiO etc. component
2On the carrier, serviceability temperature generally is 230 ℃～450 ℃.In the SCR running, because the catalyst long term exposure contains in the flue gas of pollutant at high temperature, As time goes on, its catalytic activity can slowly reduce.The factor that causes the catalyst activity reduction is a lot, and except the stifled ash of catalyst, abrasion, alkali metal oxide is the strong poisonous substance of SCR catalyst.Because the specific area of catalyst is bigger, adsorption capacity is stronger, and flying dust can adsorb at catalyst surface, K
2O, Na
2Alkali metal oxides such as O can be in the catalyst surface enrichment, with V
2O
5, WO
3Generate alkali metal salt (as KVO
3, NaVO
3), destroyed the surface texture of catalyst, make that catalyst DeNOx is active to descend, reduced denitration effect, shortened the service life of catalyst, increased the operating cost that denitration is handled.
Summary of the invention
The object of the present invention is to provide a kind of catalyst that contains the alkali metal oxide denitrating flue gas that is applicable to, to improve its denitration activity and alkali resistant metal oxide poisoning performance, prolong its service life, the SCR method denitration that can be widely used in station boiler, cement furnace flue gas is handled, and above-mentioned Preparation of catalysts method.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of catalyst that contains the alkali metal oxide denitrating flue gas that is applicable to, its percentage by weight consists of: anatase thpe white powder (TiO
2) 70.0～72.0%, ammonium metavanadate (V
2O
5) 1.2～1.5%, ammonium paratungstate 6.9～7.1% (WO
3), Ludox 3.2～3.6%, glass fiber 5.0～6.0%, methylcellulose 3.2～3.6%, PEO 1.4～1.8%, an ethanol ammonium 3.5～3.8%, aluminum sulfate 3.5～3.8%.
A kind of Preparation of catalysts method that contains the alkali metal oxide denitrating flue gas that is applicable to may further comprise the steps:
One, the preparation of powder body material: with the titanium dioxide of formula ratio, inclined to one side alum acid ammonium, ammonium paratungstate, methylcellulose, PEO and aluminum sulfate, pour in the container, stir;
Two, the preparation of slurry: it is even to pour the liquid-state silicon colloidal sol of formula ratio and monoethanolamine into container for stirring, adds the glass fiber of formula ratio again, and adds distilled water, fully stirs, even until solution;
Three, the preparation of slurry: with powder body material after the above-mentioned preparation and slurry, insert together in the bulk container, stir;
Four, shaping of catalyst: above-mentioned slurry is put into extruder make the honeycombed catalyst blank, or board-like catalyst hair 8 bases, perhaps be coated on and make the board-like catalyst blank that contains carrier on the expanded sheet metal; The catalyst blank drying that makes, calcine the catalyst finished product.
The distilled water that above-mentioned steps two is added and the weight ratio of titanium dioxide are 1:0.9～1.
Above-mentioned steps four described oven dry are to dry 2～2.5 hours down at 75～85 ℃ earlier; Dried 3～3.5 hours down at 105～115 ℃ again.
Above-mentioned steps four described calcinings are that elder generation calcined 5～6 hours down at 250～260 ℃, calcined 5～6 hours down at 400～450 ℃ again.
Aluminum sulfate in this catalytic component, its fusing point are 770 ℃, and its stable performance is non-volatile in flue gas below 450 ℃, do not fuse, and does not influence the main chemical property of each composition of catalyst.At high temperature the aluminium ion in the aluminum sulfate reacts particles such as generating sodium sulphate, potassium sulfate and aluminium hydroxide attached to the catalyst outer surface than the easier ionization of the hydrogen ion on the vanadium pentoxide active sites with potassium, sodium ion elder generation in the flue gas.Its concrete reaction is:
Na
2O+H
2O＝2NaOH
K
2O+H
2O＝2KOH
AL
2(SO
4)
3+6NaOH＝2AL(OH)
3+3Na
2SO
4
AL
2(SO
4)
3+6KOH＝2AL(OH)
3+3K
2SO
4
2AL(OH)
3＝AL
2O
3+3H
2O
Sodium sulphate, potassium sulfate are that salts substances does not have alkalescence, 884 ℃ of sodium sulphate fusing points, and 1069 ℃ of potassium sulfate fusing points do not influence the active material in the catalyst.Product such as sodium sulphate, potassium sulfate breaks away from catalyst with dust with the surface of dust in flue gas attached to catalyst when the deashing operation, fall into the collection apparatus for ash.Entire reaction course has not only been removed the alkali metal oxide of the toxic component of ash-laden gas to the active not influence of catalyst DeNOx, and sodium sulfate byproduct, potassium sulfate are by effectively collection and treatment.Aluminium hydroxide is a kind of more active material relatively, low temperature dewatering can occur at 140 ℃～150 ℃, generates Y type alumina powder, is deposited on catalyst coating, performance and carrier TiO
2Similar.
Catalyst of the present invention has higher anti-alkali metal oxide poisoning capability, possess good chemical stability and heat endurance, under lower temperature He in the wider temperature range, has advantages of high catalytic activity, long service life, operating cost is low, and production technology is simple, and preparation cost is cheap.
The specific embodiment
The described catalyst of the embodiment of the invention, its percentage by weight consists of: anatase thpe white powder 70.16%, ammonium metavanadate 1.32%, ammonium paratungstate 7.02%, Ludox 3.51%, glass fiber 5.70%, methylcellulose 3.51%, PEO 1.75%, an ethanol ammonium 3.51%, aluminum sulfate 3.52%.
The described Preparation of catalysts method of the embodiment of the invention may further comprise the steps:
One, the preparation of powder body material: take by weighing titanium dioxide 1000 gram, alum acid ammonium 25.87 grams, ammonium paratungstate 112.59 grams, methylcellulose 50.02 grams, PEO 12.54 grams, aluminum sulfate 50.01 grams partially, above-mentioned solid powder poured in the container mix, stir.
Two, the preparation of slurry: take by weighing Ludox (liquid state) 200.02 grams, monoethanolamine (liquid state) 49.93 grams, it is even to pour container for stirring into, take by weighing again glass fiber (＜0.5mm) 80.02 the gram place this container fully to stir, and add 1050 ml distilled waters, the addition of distilled water is by " on a small quantity repeatedly " principle progressively adds, and is even until solution.
Three, the preparation of slurry: with powder body material after the above-mentioned preparation and slurry, insert together in the bulk container, stir; Whipping process continues about 1.5 hours, and is even until solution, gained slurry form exquisiteness, even, good fluidity.
Four, shaping of catalyst: the stainless steel cloth of prior well cutting is placed in the special fixture, and the anchor clamps top layer scribbles glycerine.The stainless steel cloth surface smoothness requires to guarantee, the slurry that makes evenly is poured on the stainless steel wire net surface, seal up the stainless steel shrouding that is coated with glycerine, rolling back and forth with roller, roll reality, scrape off the slurry that overflows around the shrouding, open shrouding, take out the stainless steel cloth module that scribbles slurry, make board-like catalyst blank (also slurry can be put into the catalyst blank that extruder extrudes into cellular or other shape).The catalyst blank is put into baking oven dry, first constant temperature drying 2 hours under 80 ℃ of temperature, constant temperature drying 3 hours under 110 ℃ of temperature again; Catalyst blank after will drying is then put into Muffle furnace and is calcined, and calcining at constant temperature is 5 hours under 250 ℃ of temperature, and calcining at constant temperature 5 hours under 400 ℃ of temperature makes the board-like catalyst of finished product again.
Catalyst of the present invention (abbreviation catalyst A) uses in fire coal boiler fume performance test stage apparatus with the existing catalyst of sulfur acid al composition (abbreviation catalyst B) not, and it is as follows to record data statistics:
| The catalyst classification | Na 2The O removal efficiency | K 2The O removal efficiency | The NOx removal efficiency | Operating position (using after 72 hours) |
| Catalyst A | 97.25％ | 95.5％ | 84.3％ | The surface is brighter and cleaner, does not have material to come off |
| Catalyst B | 44.3％ | 42.9％ | 76.8％ | The surface is the corrosion shape, has more material to come off |
From fire coal boiler fume test platform device the performance test situation of catalyst is learnt, catalyst of the present invention has higher anti-alkali metal oxide poisoning capability, possess good chemical stability and heat endurance, under lower temperature He in the wider temperature range, has advantages of high catalytic activity, long service life, operating cost is low.
Claims (5)
1. one kind is applicable to the catalyst that contains the alkali metal oxide denitrating flue gas, it is characterized in that: the percentage by weight of catalyst consists of: anatase thpe white powder (TiO
2) 70.0～72.0%, ammonium metavanadate (V
2O
5) 1.2～1.5%, ammonium paratungstate 6.9～7.1% (WO
3), Ludox 3.2～3.6%, glass fiber 5.0～6.0%, methylcellulose 3.2～3.6%, PEO 1.4～1.8%, an ethanol ammonium 3.5～3.8%, aluminum sulfate 3.5～3.8%.
2. one kind is applicable to the Preparation of catalysts method that contains the alkali metal oxide denitrating flue gas, it is characterized in that: may further comprise the steps:
One, the preparation of powder body material: with the titanium dioxide of formula ratio, inclined to one side alum acid ammonium, ammonium paratungstate, methylcellulose, PEO and aluminum sulfate, pour in the container, stir;
Two, the preparation of slurry: it is even to pour the liquid-state silicon colloidal sol of formula ratio and monoethanolamine into container for stirring, adds the glass fiber of formula ratio again, and adds distilled water, fully stirs, even until solution;
Three, the preparation of slurry: with powder body material after the above-mentioned preparation and slurry, insert together in the bulk container, stir;
Four, shaping of catalyst: above-mentioned slurry is put into extruder make the honeycombed catalyst blank, or board-like catalyst blank, perhaps be coated on and make the board-like catalyst blank that contains carrier on the expanded sheet metal; The catalyst blank drying that makes, calcine the catalyst finished product.
3. according to described a kind of Preparation of catalysts method that contains the alkali metal oxide denitrating flue gas that is applicable to of claim 2, it is characterized in that: the distilled water that above-mentioned steps two is added and the weight ratio of titanium dioxide are 1:0.9～1.
4. according to described a kind of Preparation of catalysts method that contains the alkali metal oxide denitrating flue gas that is applicable to of claim 2, it is characterized in that: above-mentioned steps four described oven dry are to dry 2～2.5 hours down at 75～85 ℃ earlier; Dried 3～3.5 hours down at 105～115 ℃ again.
5. according to described a kind of Preparation of catalysts method that contains the alkali metal oxide denitrating flue gas that is applicable to of claim 2, it is characterized in that: above-mentioned steps four described calcinings are, calcined 5～6 hours down at 250～260 ℃ earlier, calcined 5～6 hours down at 400～450 ℃ again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101966381A CN101371970B (en) | 2008-09-15 | 2008-09-15 | Catalyst and preparation method thereof suitable for denitration of flue gas containing alkali metal oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101966381A CN101371970B (en) | 2008-09-15 | 2008-09-15 | Catalyst and preparation method thereof suitable for denitration of flue gas containing alkali metal oxide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101371970A true CN101371970A (en) | 2009-02-25 |
| CN101371970B CN101371970B (en) | 2011-07-13 |
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|---|---|---|---|
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101502796B (en) * | 2009-03-20 | 2011-01-05 | 无锡市宜刚耐火材料有限公司 | Integral honeycomb selective catalytic reduction catalyst for flue gas denitration and method for preparing the same |
| CN102151564A (en) * | 2011-01-30 | 2011-08-17 | 广州市威格林环保科技有限公司 | Preparation method and slurry of denitration integral type catalyst |
| CN101658793B (en) * | 2009-09-29 | 2011-10-05 | 浙江三龙催化剂有限公司 | Titania-based catalytic agent in coal steam-electric plant smoke SCR denitration and preparation method thereof |
| CN101711978B (en) * | 2009-11-28 | 2012-04-11 | 江苏科行环境工程技术有限公司 | High mechanical property and low cost SCR denitration catalyst and preparation method thereof |
| CN102614866A (en) * | 2012-03-01 | 2012-08-01 | 浙江大学 | Honeycomb SCR smoke denitration catalyst embryoid body and preparation method thereof |
| CN103028393A (en) * | 2011-10-10 | 2013-04-10 | 河南佰利联化学股份有限公司 | Preparation method of titanium dioxide for denitration through use of sulfuric acid process titanium solution |
| CN103861628A (en) * | 2012-12-14 | 2014-06-18 | 上海郎特电力环保科技有限公司 | Flue-gas denitration catalyst incapable of being deactivated by basic metallic oxides, preparation method thereof and applications thereof |
| CN104437586A (en) * | 2013-09-25 | 2015-03-25 | 江苏清能国信环保科技有限公司 | Foam type low-temperature flue gas denitration catalyst and preparation method thereof |
| CN105195178A (en) * | 2015-10-27 | 2015-12-30 | 江苏龙源催化剂有限公司 | Integral denitration catalyst applicable to flue gas with high metal element content and preparation method thereof |
| CN105363494A (en) * | 2014-08-20 | 2016-03-02 | 上海郎特汽车净化器有限公司 | SCR denitration catalyst and preparation method thereof |
| CN106492783A (en) * | 2016-11-30 | 2017-03-15 | 易能环境技术有限公司 | A kind of glass furnace fume SCR denitration and preparation method thereof |
| CN106540683A (en) * | 2016-12-06 | 2017-03-29 | 北京国电龙源环保工程有限公司 | Wear-resistant SCR catalyst and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4321555C1 (en) * | 1993-06-29 | 1994-09-15 | Bayer Ag | Process for producing mixed-oxide powders for denitration catalysts |
| CN1210092C (en) * | 2003-04-07 | 2005-07-13 | 华南理工大学 | Selective reduction catalyst for nitrogen oxide in smoking gas, its preparation method and application |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101502796B (en) * | 2009-03-20 | 2011-01-05 | 无锡市宜刚耐火材料有限公司 | Integral honeycomb selective catalytic reduction catalyst for flue gas denitration and method for preparing the same |
| CN101658793B (en) * | 2009-09-29 | 2011-10-05 | 浙江三龙催化剂有限公司 | Titania-based catalytic agent in coal steam-electric plant smoke SCR denitration and preparation method thereof |
| CN101711978B (en) * | 2009-11-28 | 2012-04-11 | 江苏科行环境工程技术有限公司 | High mechanical property and low cost SCR denitration catalyst and preparation method thereof |
| CN102151564B (en) * | 2011-01-30 | 2013-06-05 | 广州市威格林环保科技有限公司 | Preparation method and slurry of denitration integral type catalyst |
| CN102151564A (en) * | 2011-01-30 | 2011-08-17 | 广州市威格林环保科技有限公司 | Preparation method and slurry of denitration integral type catalyst |
| CN103028393A (en) * | 2011-10-10 | 2013-04-10 | 河南佰利联化学股份有限公司 | Preparation method of titanium dioxide for denitration through use of sulfuric acid process titanium solution |
| CN102614866A (en) * | 2012-03-01 | 2012-08-01 | 浙江大学 | Honeycomb SCR smoke denitration catalyst embryoid body and preparation method thereof |
| CN103861628A (en) * | 2012-12-14 | 2014-06-18 | 上海郎特电力环保科技有限公司 | Flue-gas denitration catalyst incapable of being deactivated by basic metallic oxides, preparation method thereof and applications thereof |
| CN104437586A (en) * | 2013-09-25 | 2015-03-25 | 江苏清能国信环保科技有限公司 | Foam type low-temperature flue gas denitration catalyst and preparation method thereof |
| CN105363494A (en) * | 2014-08-20 | 2016-03-02 | 上海郎特汽车净化器有限公司 | SCR denitration catalyst and preparation method thereof |
| CN105195178A (en) * | 2015-10-27 | 2015-12-30 | 江苏龙源催化剂有限公司 | Integral denitration catalyst applicable to flue gas with high metal element content and preparation method thereof |
| CN105195178B (en) * | 2015-10-27 | 2018-06-29 | 江苏龙源催化剂有限公司 | It is a kind of suitable for monoblock type denitrating catalyst of high basic metal constituent content flue gas and preparation method thereof |
| CN106492783A (en) * | 2016-11-30 | 2017-03-15 | 易能环境技术有限公司 | A kind of glass furnace fume SCR denitration and preparation method thereof |
| CN106540683A (en) * | 2016-12-06 | 2017-03-29 | 北京国电龙源环保工程有限公司 | Wear-resistant SCR catalyst and preparation method thereof |
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