CN113509924A - Denitration catalyst and production process thereof - Google Patents
Denitration catalyst and production process thereof Download PDFInfo
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- CN113509924A CN113509924A CN202110561226.9A CN202110561226A CN113509924A CN 113509924 A CN113509924 A CN 113509924A CN 202110561226 A CN202110561226 A CN 202110561226A CN 113509924 A CN113509924 A CN 113509924A
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- 239000003054 catalyst Substances 0.000 title claims abstract description 151
- 238000004519 manufacturing process Methods 0.000 title abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 40
- 239000000835 fiber Substances 0.000 claims abstract description 37
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims abstract description 32
- 229920002050 silicone resin Polymers 0.000 claims abstract description 32
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000003546 flue gas Substances 0.000 claims abstract description 30
- 239000003365 glass fiber Substances 0.000 claims abstract description 30
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 29
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000000919 ceramic Substances 0.000 claims abstract description 23
- 239000000843 powder Substances 0.000 claims abstract description 23
- 238000002156 mixing Methods 0.000 claims abstract description 21
- 239000007864 aqueous solution Substances 0.000 claims abstract description 18
- 230000032683 aging Effects 0.000 claims abstract description 17
- UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical compound [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 claims abstract description 16
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims abstract description 15
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims abstract description 15
- 238000005520 cutting process Methods 0.000 claims abstract description 14
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 14
- 239000012745 toughening agent Substances 0.000 claims abstract description 11
- 239000004014 plasticizer Substances 0.000 claims abstract description 10
- 239000000314 lubricant Substances 0.000 claims abstract description 9
- 230000007246 mechanism Effects 0.000 claims description 47
- 239000011148 porous material Substances 0.000 claims description 38
- 239000000203 mixture Substances 0.000 claims description 33
- 239000000463 material Substances 0.000 claims description 31
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 26
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 17
- 239000002994 raw material Substances 0.000 claims description 14
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 13
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 13
- 235000014655 lactic acid Nutrition 0.000 claims description 13
- 239000004310 lactic acid Substances 0.000 claims description 13
- 239000005995 Aluminium silicate Substances 0.000 claims description 12
- 235000012211 aluminium silicate Nutrition 0.000 claims description 12
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 12
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 12
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 12
- 238000001125 extrusion Methods 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- 235000021355 Stearic acid Nutrition 0.000 claims description 7
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 7
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 6
- 239000008117 stearic acid Substances 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
- 238000009966 trimming Methods 0.000 claims description 5
- 238000004898 kneading Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000007723 die pressing method Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000000243 solution Substances 0.000 claims description 2
- 229920003169 water-soluble polymer Polymers 0.000 claims 6
- 239000003381 stabilizer Substances 0.000 claims 2
- 239000002904 solvent Substances 0.000 claims 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 6
- 230000003628 erosive effect Effects 0.000 abstract description 5
- 230000000052 comparative effect Effects 0.000 description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 239000000779 smoke Substances 0.000 description 11
- 238000005299 abrasion Methods 0.000 description 10
- 239000008367 deionised water Substances 0.000 description 8
- 229910021641 deionized water Inorganic materials 0.000 description 8
- 238000002425 crystallisation Methods 0.000 description 7
- 230000008025 crystallization Effects 0.000 description 7
- 238000003756 stirring Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 6
- 239000000428 dust Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 235000011187 glycerol Nutrition 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- QGAVSDVURUSLQK-UHFFFAOYSA-N ammonium heptamolybdate Chemical compound N.N.N.N.N.N.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo] QGAVSDVURUSLQK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000002241 glass-ceramic Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- -1 polyoxyethylene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/24—Chromium, molybdenum or tungsten
- B01J23/30—Tungsten
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The application relates to the field of denitration catalysts, and particularly discloses a denitration catalyst and a production process thereof. A denitration catalyst is prepared from titanium dioxide, ammonium metavanadate, ammonium metatungstate, monoethanolamine aqueous solution, denitration catalyst fiber, polyethylene oxide, a lubricant, a plasticizer and a toughening agent, wherein the toughening agent comprises glass fiber, methyl silicone resin and ceramic fiber powder; the production process comprises the following steps: mixing, ageing, extruding, drying, roasting and cutting. The application of the denitration catalyst can be used for reducing and treating nitrogen oxides in flue gas, and has the advantages of reducing erosion damage of the flue gas to the denitration catalyst and prolonging the service life of the denitration catalyst.
Description
Technical Field
The application relates to the field of denitration catalysts, in particular to a denitration catalyst and a production process thereof.
Background
The denitration catalyst generally refers to a catalyst applied to an SCR denitration system, and in the SCR reaction, the denitration catalyst promotes a reducing agent to selectively react with nitrogen oxides in flue gas at a certain temperature, so that the aim of performing denitration treatment on the flue gas is fulfilled.
In the related art, the chinese patent application with publication number CN110639504A discloses a honeycomb type low-temperature flue gas denitration catalyst and a preparation method thereof, comprising the following components in parts by weight: 380-630 parts of titanium dioxide, 1-2 parts of octadecanoic acid, 5-8 parts of lactic acid, 12-16 parts of ammonium metatungstate, 8-12 parts of ammonium heptamolybdate, 2-6 parts of high-purity silicon, 28-42 parts of glass fiber, 2.2-4.3 parts of wood pulp, 6-8.5 parts of PEO, 0.4-1.2 parts of CMC, 135-170 parts of ammonium metavanadate solution, 82-116 parts of monoethanolamine and 500-700 parts of deionized water. The preparation method comprises the following steps: s1, proportioning and preparing materials; s2, pre-dissolving ammonium metavanadate; s3, six-step mixing; s4, filtering and pre-extruding; s5, standing and ageing; s6, extrusion molding; s7, primary drying; s8, secondary drying; s9, roasting; s10, cutting, checking and packaging.
The denitration catalyst prepared by the related technology can be used for reduction treatment of oxynitride in flue gas. The prepared denitration catalyst is cuboid, the end face of the denitration catalyst is square, the denitration catalyst is internally provided with pore channels along the denitration catalyst, the length direction of the pore channels is parallel to the length direction of the denitration catalyst, for example, the denitration catalyst with 20 pores is uniformly distributed and arranged along the side length direction of the end face of the denitration catalyst, and the 20 pores are 20 × 20-400 pore channels.
In view of the above-mentioned related technologies, the inventors believe that, in order to improve the activity and denitration efficiency of the denitration catalyst, a method of increasing the number of catalyst pores and further increasing the specific surface area is generally adopted, when the number of catalyst pores increases to 40 pores, the structural stability of the catalyst decreases, and after the upper end of the catalyst is damaged by the erosion of flue gas, the flue gas continues to erode the catalyst, so that the damage degree of the catalyst increases continuously, and further the service life of the catalyst decreases.
Disclosure of Invention
In order to reduce the erosion damage of the flue gas to the denitration catalyst and prolong the service life of the denitration catalyst, the application provides the denitration catalyst and the production process thereof.
The denitration catalyst is prepared from the following raw materials in parts by weight: 580-620 parts of ammonium metavanadate: 1-4 parts, ammonium metatungstate: 2-5 parts of monoethanolamine aqueous solution: 272-338 parts of denitration catalyst fiber: 2-5 parts of polyoxyethylene: 4-8 parts of a lubricant: 3-9 parts of a plasticizer: 18-46 parts of a toughening agent: 19-37 parts of a toughening agent, wherein the toughening agent comprises glass fiber, methyl silicone resin and ceramic fiber powder, and the weight parts of the glass fiber, the methyl silicone resin and the ceramic fiber powder are (15-25): (3-7): (1-5).
By adopting the technical scheme, the glass fiber is adopted to improve the wear-resisting property of the denitration catalyst, and the methyl silicone resin is firstly melted and infiltrated into the glass fiber, the ceramic fiber powder and the raw materials during the production process due to roasting, so that the glass fiber, the ceramic fiber powder and the raw materials are combined more tightly; in the cooling process after the calcination, methyl silicone resin cooling crystallization, ceramic fiber powder promotes methyl silicone resin crystal hardening and improves denitration catalyst wear resistance, and methyl silicone resin crystallization makes bonding strength reinforcing between glass fiber and each raw materials simultaneously, and then improves denitration catalyst's wear resistance, effectively reduces the erosion damage that the flue gas caused the denitration catalyst, extension denitration catalyst life.
Preferably, the lubricant comprises glycerol and stearic acid, and the weight part ratio of the glycerol to the stearic acid is (2-6): (1-3).
By adopting the technical scheme, the glycerin and the stearic acid ensure that the materials have good fluidity in the processing process, reduce the stirring resistance, uniformly mix all the components in the materials and simultaneously facilitate the demoulding.
Preferably, the plasticizer comprises lactic acid, carboxymethyl cellulose and kaolin, and the weight part ratio of the lactic acid to the carboxymethyl cellulose to the kaolin is (3-4): (3-4): (10-15).
Through adopting above-mentioned technical scheme, lactic acid, carboxymethyl cellulose and kaolin make each raw materials effectively gather the bonding, improve the mixture plasticity, make denitration catalyst shaping more easily and improve denitration catalyst structural stability in the course of working.
Preferably, the denitration catalyst is a denitration catalyst with 40 holes or more than 40 holes, and one end of the denitration catalyst is detachably connected with a flow guide mechanism for guiding flue gas into a denitration catalyst pore channel.
Through adopting above-mentioned technical scheme, water conservancy diversion mechanism plays the guard action to denitration catalyst tip to effectively reduce the flue gas to the damage of denitration catalyst tip, improve denitration catalyst performance.
Preferably, the water conservancy diversion mechanism includes the backup pad, the backup pad is parallel with denitration catalyst length direction, correspond the denitration catalyst in the backup pad and seted up a plurality of through-holes, through-hole and denitration catalyst pore one-to-one, the backup pad corresponds a plurality of connecting cylinders of through-hole fixedly connected with towards denitration catalyst one side, and every through-hole all has a connecting cylinder rather than corresponding the setting, and when the backup pad butt in denitration catalyst one end, the connecting cylinder slides in the pore, connecting cylinder periphery lateral wall sets up with pore inner wall interval, the backup pad deviates from denitration catalyst one side and corresponds a plurality of guide cylinders that lead the flue gas to the connecting cylinder of through-hole fixedly connected with, and every through-hole all has a guide cylinder rather than corresponding the setting.
Through adopting above-mentioned technical scheme, the flue gas is under the guide effect of guide cylinder, in the through-hole and connecting cylinder entering pore to effectively reduce the damage to denitration catalyst tip.
Preferably, the guide cylinder is a square cylinder, the end face of the guide cylinder is square, first guide surfaces are arranged on four side faces of the inner wall of the guide cylinder, one side of each first guide surface, away from the support plate, is flush with the outer wall of the guide cylinder, and the two adjacent guide cylinders are fixedly connected.
Through adopting above-mentioned technical scheme, the bonding is gathered to the smoke and dust granule in the flue gas one end of keeping away from the backup pad at the connecting cylinder, and the flue gas is through the guide cylinder direction and striking connecting cylinder inner wall to make the connecting cylinder vibration and make the smoke and dust on the connecting cylinder drop, effectively reduce the condition that the pore was blockked up to the smoke and dust.
Preferably, the connecting cylinder is a square cylinder, the end face of the connecting cylinder is square, the four side faces of the outer wall of the connecting cylinder are provided with second guide faces, and the second guide faces are away from the supporting plate and are obliquely arranged in the direction close to the inner wall of the guide cylinder in the lateral direction.
By adopting the technical scheme, when the connecting cylinder is installed, the second guide surface is convenient for the connecting cylinder to slide into the pore channel, and the connecting cylinder is convenient to install.
A production process of a denitration catalyst comprises the following steps,
s1, mixing: uniformly mixing titanium dioxide, ammonium metavanadate, ammonium metatungstate, monoethanolamine aqueous solution, denitration catalyst fiber, polyethylene oxide, a lubricant, a plasticizer and a toughening agent, and kneading to prepare a mixture;
s2, ageing: sealing and packaging the mixture and aging;
s3, extrusion: processing the aged mixture into a honeycomb blank;
s4, drying: drying the honeycomb blank in two sections to obtain a honeycomb dried material;
s5, roasting: roasting the honeycomb-shaped dry material to be shaped;
s6, cutting: and taking out the roasted honeycomb-shaped dried material, cooling to room temperature, and cutting two ends to be flat to obtain the denitration catalyst.
By adopting the technical scheme, the denitration catalyst is prepared by mixing the raw materials through steps, the abrasion resistance of the denitration catalyst is improved, the damage of flue gas to the end part of the denitration catalyst is effectively reduced, and the performance of the denitration catalyst is improved.
Preferably, the method comprises the following steps,
s1, mixing: uniformly mixing titanium dioxide, ammonium metavanadate, ammonium metatungstate, monoethanolamine aqueous solution, denitration catalyst fiber, polyethylene oxide, a lubricant, a plasticizer and a toughening agent, and kneading to prepare a mixture;
s2, ageing: sealing and packaging the mixture and aging;
s3, extrusion die pressing: processing one part of the aged mixture into a honeycomb blank, and preparing the other part of the aged mixture into a flow guide mechanism blank through a die;
s4, drying: the honeycomb blank and the guide mechanism blank are dried in two sections to obtain a honeycomb dried material and a guide mechanism dried material;
s5, roasting: roasting and shaping the honeycomb-shaped drying material and the drying material of the diversion mechanism;
s6, cutting and trimming: cutting two ends of the roasted honeycomb-shaped drying material to be flat to prepare a denitration catalyst, and trimming the roasted drying material of the diversion mechanism to prepare the diversion mechanism;
s7, assembling: assembling the denitration catalyst and the flow guide mechanism.
Through adopting above-mentioned technical scheme, the denitration catalyst that makes and water conservancy diversion mechanism assemble to protect denitration catalyst tip, change after the water conservancy diversion mechanism damages and can make denitration catalyst normal use, effectively prolong denitration catalyst life.
Preferably, a filtering step is further included between the mixing and ageing steps, and the filtering step is to filter the mixture to remove impurities.
Through adopting above-mentioned technical scheme, the impurity of filtering process in to the mixture filters to further improve the performance of the denitration catalyst who makes.
In summary, the present application has the following beneficial effects:
1. because the glass fiber is adopted to improve the wear-resisting property of the denitration catalyst, the methyl silicone resin is melted to enable the glass fiber to be combined with each raw material more tightly, so that the glass fiber further improves the wear-resisting property of the denitration catalyst, meanwhile, the ceramic fiber promotes the crystallization of the methyl silicone resin to improve the connection strength between the glass fiber and each raw material, and the crystallization strength of the methyl silicone resin is improved, so that the wear-resisting property of the denitration catalyst is effectively improved, the damage of the denitration catalyst generated when the denitration catalyst is eroded by flue gas is reduced, the performance of the denitration catalyst is improved, and the service life of the denitration catalyst is prolonged;
2. according to the method, the plasticity of the mixture is improved through the plasticizer, the bonding strength among the raw materials is improved, the structural stability of the extruded honeycomb blank and the pressed guide mechanism blank is improved, and the damage of the honeycomb blank and the guide mechanism blank in the production process is effectively reduced;
3. the guide mechanism has a protection effect on the end part of the denitration catalyst, the flue gas firstly erodes the guide mechanism, and after the guide mechanism is damaged, the guide mechanism is detachably connected with the denitration catalyst, so that the guide mechanism can be normally used after being replaced, and the operation is simple and convenient;
4. when the flow guide mechanism is installed, the second guide surface plays a role in guiding the connecting cylinder in a sliding manner, so that the connecting cylinder can slide into the pore channel of the denitration catalyst more easily;
5. the smoke is firstly contacted with the inner wall of the connecting cylinder under the guiding action of the first guiding surface of the guiding cylinder, and the outer wall of the connecting cylinder and the inner wall of the pore channel are arranged at intervals, so that the connecting cylinder generates vibration, the smoke at one end of the connecting cylinder, which is far away from the supporting plate, is shaken off from the connecting cylinder, and the probability of blocking the pore channel by the smoke is reduced;
6. the process for preparing the denitration catalyst and the flow guide mechanism is simple in preparation mode and easy to obtain finished products.
Drawings
FIG. 1 is a schematic view of the overall structure of example 8 of the present application, which is mainly used for showing the connection relationship between a flow guide mechanism and a denitration catalyst;
FIG. 2 is an enlarged partial schematic view of portion A of FIG. 1;
FIG. 3 is a partial structural schematic view of an embodiment 8 of the present application, which is mainly used for showing a flow guide mechanism;
fig. 4 is a schematic sectional view of a part of the structure of example 8 of the present application, which is mainly used for showing the connection relationship between the connection portion and the denitration catalyst.
Description of reference numerals: 1. a duct; 2. a flow guide mechanism; 21. a support plate; 22. a guide cylinder; 23. a connecting cylinder; 24. and a through hole.
Detailed Description
In the embodiments of the present application:
titanium dioxide is anatase titanium dioxide, purchased from Xuancheng crystal Rui New Material Co., Ltd;
ammonium metavanadate was purchased from Shandong Changyao New Material Co., Ltd,
ammonium metatungstate was purchased from Shandong Li-ang New Material science and technology Co,
monoethanolamine was purchased from Shandong Zixiang chemical marketing Co., Ltd,
the deionized water is self-made by equipment purchased in the factory,
polyethylene oxide was purchased from Shandong Li-ang New Material science and technology Co,
glycerol was purchased from jinan runhui chemical limited,
stearic acid was purchased from chemical technology limited of denying jinan,
lactic acid was purchased from the chemical Limited, Supper-Italian, Jinan,
carboxymethyl cellulose was purchased from Hebei purple gold chemical products Co., Ltd,
kaolin is purchased from Jinniu chemical Co., Ltd in Jinan,
the glass fiber is chopped glass fiber, purchased from Hencao glass fiber company Limited in salt cities,
the methyl silicone resin is powder methyl silicone resin purchased from chemical Limited company of Jinchuan of Jinhui of Jinan,
ceramic fiber powder was purchased from linyixin friction materials ltd,
the denitration catalyst fiber is purchased from Jinan Tuolong thermal ceramics Limited liability company.
The present application will be described in further detail with reference to the following drawings and examples.
Examples
Example 1
S1, mixing: mixing 2kg of monoethanolamine and 270kg of deionized water to prepare a monoethanolamine aqueous solution, pouring 580kg of titanium dioxide, 1kg of ammonium metavanadate and 2kg of ammonium metatungstate into a kneader, adding 272kg of monoethanolamine aqueous solution, adding 2kg of denitration catalyst fiber, 4kg of polyethylene oxide, 15kg of glass fiber, 3kg of methyl silicone resin, 1kg of ceramic fiber powder, 4kg of lactic acid, 4kg of carboxymethyl cellulose and 10kg of kaolin, stirring at the rotation speed of 35rpm for 30min to prepare a mixture;
s2, ageing: taking the mixture out of the kneader, placing the mixture in a sealed plastic box and aging for 24 hours;
s3, extrusion: extruding the aged mixture into a 40-hole honeycomb blank by an extruder, wherein the absolute vacuum degree is 93kPa, the extrusion pressure is 3MPa, and the extrusion speed is 900 mm/min;
s4, drying: the honeycomb-shaped blank is dried in two sections,
the first stage of drying is carried out firstly, the first stage of drying time is 10 days, the first stage of drying takes water vapor as a heat source, the drying temperature of the 10 days is 30 ℃, 35 ℃, 40 ℃, 50 ℃, 60 ℃ and 60 ℃, and the drying environment humidity is 80%, 75%, 65%, 55%, 45%, 30%, 20% and 20% in sequence;
then carrying out second-stage drying, wherein the second-stage drying takes hot air as a medium, and the honeycomb blank is placed in a drying oven to be dried for 24 hours at the drying temperature of 60 DEG C
The honeycomb blank is dried in two stages to obtain a honeycomb dried material;
s5, roasting: the honeycomb-shaped drying material is roasted in three sections,
the first stage roasting temperature is raised from normal temperature to 200 ℃, the temperature raising speed is 2 ℃/min, roasting is carried out for 4h after the temperature is raised to 200 ℃,
the second stage roasting temperature is increased from 200 ℃ to 400 ℃, the temperature increasing speed is 1 ℃/min, roasting is carried out for 3h after the temperature is increased to 400 ℃,
the third stage roasting temperature is increased from 400 ℃ to 600 ℃, the temperature increasing speed is 0.5 ℃/min, and roasting is carried out for 2h after the temperature is increased to 600 ℃;
s6, cutting: and taking out the roasted honeycomb-shaped dried material, cooling to room temperature, and cutting two ends to be flat to obtain the denitration catalyst.
Example 2
The difference from the embodiment 1 is that,
s1 is mixed into: mixing 5kg of monoethanolamine and 300kg of deionized water to prepare a monoethanolamine aqueous solution, pouring 600kg of titanium dioxide, 2.5kg of ammonium metavanadate and 3.5kg of ammonium metatungstate into a kneader, adding 305kg of monoethanolamine aqueous solution, adding 3.5kg of denitration catalyst fiber, 6kg of polyethylene oxide, 22.1kg of glass fiber, 4.4kg of methyl silicone resin, 1.5kg of ceramic fiber powder, 6kg of lactic acid, 6kg of carboxymethyl cellulose and 20kg of kaolin, stirring at the rotation speed of 35rpm of the kneader for 30min to prepare a mixture.
Example 3
The difference from the embodiment 1 is that,
s1 is mixed into: mixing 5kg of monoethanolamine and 300kg of deionized water to prepare a monoethanolamine aqueous solution, pouring 600kg of titanium dioxide, 2.5kg of ammonium metavanadate and 3.5kg of ammonium metatungstate into a kneader, adding 305kg of monoethanolamine aqueous solution, adding 3.5kg of denitration catalyst fiber, 6kg of polyethylene oxide, 20kg of glass fiber, 5kg of methyl silicone resin, 3kg of ceramic fiber powder, 6kg of lactic acid, 6kg of carboxymethyl cellulose and 20kg of kaolin, and stirring for 30min at the rotation speed of 35rpm of the kneader to prepare a mixture.
Example 4
The difference from the embodiment 1 is that,
s1 is mixed into: mixing 5kg of monoethanolamine and 300kg of deionized water to prepare a monoethanolamine aqueous solution, pouring 600kg of titanium dioxide, 2.5kg of ammonium metavanadate and 3.5kg of ammonium metatungstate into a kneader, adding 305kg of monoethanolamine aqueous solution, adding 3.5kg of denitration catalyst fiber, 6kg of polyethylene oxide, 18.9kg of glass fiber, 5.3kg of methyl silicone resin, 3.8kg of ceramic fiber powder, 6kg of lactic acid, 6kg of carboxymethyl cellulose and 20kg of kaolin, stirring at the rotation speed of 35rpm of the kneader for 30min to prepare a mixture.
Example 5
S1, mixing: mixing 5kg of monoethanolamine and 300kg of deionized water to prepare a monoethanolamine aqueous solution, pouring 600kg of titanium dioxide, 2.5kg of ammonium metavanadate and 3.5kg of ammonium metatungstate into a kneader, adding 305kg of monoethanolamine aqueous solution, adding 3.5kg of denitration catalyst fiber, 6kg of polyethylene oxide, 20kg of glass fiber, 5kg of methyl silicone resin, 3kg of ceramic fiber powder, 6kg of lactic acid, 6kg of carboxymethyl cellulose and 20kg of kaolin, stirring at the rotation speed of the kneader of 35rpm for 30min to prepare a mixture
S2, ageing: taking the mixture out of the kneader, placing the mixture in a sealed plastic box and aging for 24 hours;
s3, extrusion die pressing: extruding the aged mixture into 40-hole honeycomb blank by an extruder, wherein the absolute vacuum degree is 93kPa, the extrusion pressure is 3MPa, the extrusion speed is 900mm/min,
pressing by a die to obtain a guide mechanism blank;
s4, drying: the honeycomb-shaped blank and the guide mechanism blank are dried in two sections,
the first stage of drying is carried out firstly, the first stage of drying time is 10 days, the first stage of drying takes water vapor as a heat source, the drying temperature of the 10 days is 30 ℃, 35 ℃, 40 ℃, 50 ℃, 60 ℃ and 60 ℃, and the drying environment humidity is 80%, 75%, 65%, 55%, 45%, 30%, 20% and 20% in sequence;
then carrying out second-stage drying, wherein the second-stage drying takes hot air as a medium, and the honeycomb blank is placed in a drying oven to be dried for 24 hours at the drying temperature of 60 DEG C
The honeycomb blank and the guide mechanism blank are dried in two stages to obtain a honeycomb dried material and a guide mechanism dried material;
s5, roasting: the honeycomb-shaped drying material and the drying material of the diversion mechanism are roasted in three sections,
the first stage roasting temperature is raised from normal temperature to 200 ℃, the temperature raising speed is 2 ℃/min, roasting is carried out for 4h after the temperature is raised to 200 ℃,
the second stage roasting temperature is increased from 200 ℃ to 400 ℃, the temperature increasing speed is 1 ℃/min, roasting is carried out for 3h after the temperature is increased to 400 ℃,
the third stage roasting temperature is increased from 400 ℃ to 600 ℃, the temperature increasing speed is 0.5 ℃/min, and roasting is carried out for 2h after the temperature is increased to 600 ℃;
s6, cutting: and taking out the roasted honeycomb-shaped dried material, cooling to room temperature, cutting two ends to be flat to prepare the denitration catalyst, and trimming redundant waste materials at the corners of the flow guide mechanism to prepare the flow guide mechanism.
And S7, mounting the flow guide mechanism at one end of the denitration catalyst.
Example 6
The difference from the embodiment 5 is that,
a filtering step is also included between the mixing and the ageing steps,
the filtering step is as follows: and filtering the mixture by using a rectangular filter screen with 1mm by 4mm openings to remove impurities.
Example 7
The difference from the embodiment 1 is that,
s1 is mixed into: 8kg of monoethanolamine and 330kg of deionized water are mixed to prepare a monoethanolamine aqueous solution, 620kg of titanium dioxide, 4kg of ammonium metavanadate and 5kg of ammonium metatungstate are poured into a kneader, 338kg of monoethanolamine aqueous solution is added, 35kg of denitration catalyst fiber, 8kg of polyethylene oxide, 25kg of glass fiber, 7kg of methyl silicone resin, 5kg of ceramic fiber powder, 8kg of lactic acid, 8kg of carboxymethyl cellulose and 30kg of kaolin are added, the rotation speed of the kneader is 35rpm, and the mixture is prepared after stirring for 30 min.
Example 8
Referring to fig. 1 and 2, the 40-hole denitration catalyst is rectangular, two end faces are square, square pore channels 1 are formed in the denitration catalyst, and the pore channels 1 are uniformly distributed along the side length direction of the square, so that the number of the pore channels 1 formed in the 40-hole denitration catalyst is 40 × 40 — 1600.
Referring to fig. 3 and 4, the flow guide mechanism 2 includes a square support plate 21, the support plate 21 abuts against one end of the denitration catalyst, the length direction of the denitration catalyst is perpendicular to the support plate 21, and the area of the support plate 21 facing the denitration catalyst is equal to the area of the end face of the denitration catalyst facing the one end of the support plate 21. A plurality of square through holes 24 are formed in the support plate 21 corresponding to the pore channels 1, the through holes 24 are arranged in one-to-one correspondence with the pore channels 1, and the end surface area of each through hole 24 is smaller than that of the pore channel 1. Backup pad 21 deviates from denitration catalyst one side fixedly connected with a plurality of guide cylinders 22, and guide cylinders 22 and through-hole 24 one-to-one set up. The connecting cylinder 23 is fixedly connected to one side, facing the denitration catalyst, of the support plate 21, the connecting cylinder 23 and the through holes 24 are arranged in a one-to-one correspondence mode, the connecting cylinder 23 slides along with the support plate 21, and when the support plate 21 abuts against one end of the denitration catalyst, the connecting cylinder 23 slides into the pore channel 1. The guide cylinder 22 and the connecting cylinder 23 are both square cylinders with square end faces, and the guide cylinder 22, the through hole 24 and the connecting cylinder 23 are arranged in a collinear manner.
The backup pad 21 plays the guard action to denitration catalyst tip, and the flue gas gets into in the pore 1 through guide cylinder 22, through-hole 24 and connecting cylinder 23 to reduce the erosion damage of flue gas to denitration catalyst, extension denitration catalyst life.
Referring to fig. 4, first spigot surface has all been seted up to four sides of guide cylinder 22 inner wall, and backup pad 21 one side is kept away from to first spigot surface and is close to the slope setting of guide cylinder 22 lateral wall direction, and backup pad 21 one side and guide cylinder 22 lateral wall parallel and level are kept away from to first spigot surface to make the flue gas along first spigot surface entering through-hole 24 in. The guide cylinders 22 are uniformly distributed along the length direction of one side of the square of the support plate 21, and one side of each guide cylinder 22, which faces the adjacent guide cylinder 22, is fixedly connected with the adjacent guide cylinder 22. The projection of one end of the inner wall of the connecting cylinder 23 close to the support plate 21 on the side of the support plate 21 away from the denitration catalyst coincides with the end face of the through hole 24.
When the flue gas reaches the guide cylinder 22, the flue gas flows along the first guide surface and sequentially enters the pore channel 1 through the through hole 24 and the connecting cylinder 23, so that the damage of the flue gas to the end part of the denitration catalyst is reduced.
Referring to fig. 4, the second guiding surface has all been seted up to four sides of connecting cylinder 23 lateral wall, and backup pad 21 one side is kept away from to the second guiding surface and is close to the slope of connecting cylinder 23 inner wall direction and set up, and backup pad 21 one side and the setting of connecting cylinder 23 inner wall interval are kept away from to the second guiding surface. The maximum area of the peripheral side wall of the connecting cylinder 23 is equal to the area of the end face of the pore channel 1, and the projection of the inner wall of the connecting cylinder 23 on the side of the support plate 21 facing the denitration catalyst coincides with the end face of the through hole 24.
The second direction slides and plays the guide effect to connecting cylinder 23 to guide mechanism 2 easy to assemble, the second spigot surface makes connecting cylinder 23 outer wall and 1 inner wall interval setting in pore moreover, and the flue gas reachs connecting cylinder 23 inner wall under first spigot surface guide effect, thereby shakes the adhesion in the smoke and dust that connecting cylinder 23 kept away from backup pad 21 one end and falls, reduces the smoke and dust and piles up in pore 1.
The implementation principle of embodiment 8 of the present application is as follows: the connecting cylinders 23 are aligned with the pore passages 1 on the denitration catalyst one by one, then the connecting cylinders 23 slide into the pore passages 1, and the support plate 21 abuts against one end of the denitration catalyst to complete installation.
When the denitration device is used, the flow guide mechanism 2 is blown towards the smoke, the smoke reaches the connecting cylinder 23 through the first guide surface and the through hole 24, and then the smoke flows along the length direction of the pore channel 1 to be subjected to denitration treatment.
Comparative example
Comparative example 1
The difference from example 3 is that no ceramic fiber powder was added in S1.
Comparative example 2
The difference from example 3 is that methyl silicone resin was not added to S1.
Comparative example 3
The difference from example 3 is that no glass fiber was added in S1.
Comparative example 4
The difference from example 3 is that methyl silicone resin and ceramic fiber powder were not added to S1.
Comparative example 5
The difference from example 3 is that no glass fiber or methyl silicone resin was added to S1.
Comparative example 6
The difference from example 3 is that no glass fiber or ceramic fiber powder was added in S1.
Comparative example 7
The difference from example 3 is that no glass fiber, methyl silicone resin and ceramic fiber powder were added to S1.
Performance test
Abrasion tests were carried out on examples 1 to 7 and comparative examples 1 to 7 according to abrasion strength of DL/T1286-2013 detection technical Specification for flue gas denitration catalyst of thermal power plant 5.2.3 honeycomb type catalyst. In examples 1 to 7 and comparative examples 1 to 7, two test pieces were set as A and B, and the final abrasion resistance ξ (%/kg) was taken as the arithmetic average of the two. Wherein, the denitration catalyst and the diversion mechanism are arranged and then impacted by flue gas in the embodiment 5 and the embodiment 6, the diversion mechanism is detached during weighing to independently detect the denitration catalyst, and the specific detection data are shown in the table 1.
TABLE 1 abrasion Strength test Table
It can be seen from the combination of comparative example 6 and comparative example 7 and the combination of table 1 that, wear-resisting strength is promoted after adding methyl silicone resin, and the reason should be that the joint strength between each raw materials is increased for methyl silicone resin melts, and methyl silicone resin crystallization improves denitration catalyst wear-resisting strength after cooling.
It can be seen from the combination of comparative example 5 and comparative example 7 and table 1 that the abrasion resistance of the denitration catalyst can be improved after the ceramic fiber powder is added, but the improvement range is limited.
As can be seen by combining comparative example 4 and comparative example 7 with table 1, the abrasion resistance of the denitration catalyst is improved by using the abrasion resistance of the glass fiber itself after the glass fiber is added.
It can be seen from the combination of example 3, comparative example 2, and comparative example 7 and table 1 that the abrasion resistance of the denitration catalyst is significantly improved after the addition of the methyl silicone resin, and the reason is that the raw materials are connected more tightly after the methyl silicone resin is melted, and the connection strength between the glass fiber and the raw materials can be improved after the methyl silicone resin is cooled and crystallized.
It can be seen from the combination of example 3, comparative example 1, and comparative example 7 and the combination of table 1 that the addition of the ceramic fiber powder can significantly improve the wear-resistant strength of the denitration catalyst, and the ceramic fiber powder is supposed to promote the cooling crystallization speed of the methyl silicone resin and improve the crystallization strength of the methyl silicone resin, so that the wear-resistant strength of the denitration catalyst is improved.
As can be seen from the combination of example 3 and example 5 and table 1, the first guide surface reduces damage to the end surface of the denitration catalyst by the gas flow guided by the flow guide mechanism.
It can be seen from the combination of example 5 and example 6 and table 1 that the impurities in the raw material are filtered out by filtration, so that the connection strength and the connection tightness between the components are improved, and the abrasion resistance of the denitration catalyst is further improved.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (10)
1. A denitration catalyst is characterized by being prepared from the following raw materials in parts by weight,
titanium dioxide: 580 to 620 parts of a solvent, and the balance,
ammonium metavanadate: 1 to 4 parts of (A) a water-soluble polymer,
ammonium metatungstate: 2 to 5 parts by weight of a stabilizer,
aqueous monoethanolamine solution: 272 to 338 parts of a water-soluble polymer,
denitration catalyst fiber: 2 to 5 parts by weight of a stabilizer,
polyethylene oxide: 4 to 8 parts of (A) a water-soluble polymer,
lubricant: 3 to 9 parts of (A) a water-soluble polymer,
plasticizer: 18 to 46 parts of (a) a water-soluble polymer,
a toughening agent: 19 to 37 parts by weight of a water-soluble polymer,
the toughening agent comprises glass fiber, methyl silicone resin and ceramic fiber powder, wherein the weight part ratio of the glass fiber to the methyl silicone resin to the ceramic fiber powder is (15-25): (3-7): (1-5).
2. The denitration catalyst according to claim 1, wherein the lubricant comprises glycerol and stearic acid, and the weight part ratio of the glycerol to the stearic acid is (2-6): (1-3).
3. The denitration catalyst according to claim 1, wherein the plasticizer comprises lactic acid, carboxymethyl cellulose and kaolin, and the weight parts ratio of the lactic acid to the carboxymethyl cellulose to the kaolin is (3-4): (3-4): (10-15).
4. The denitration catalyst according to claim 1, wherein the denitration catalyst is a denitration catalyst having 40 or more pores, and one end of the denitration catalyst is detachably connected with a flow guide mechanism (2) for guiding flue gas into the denitration catalyst pore channel (1).
5. The denitration catalyst according to claim 4, wherein the flow guide mechanism (2) comprises a support plate (21), the support plate (21) is parallel to the denitration catalyst in the length direction, a plurality of through holes (24) are formed in the support plate (21) corresponding to the denitration catalyst, the through holes (24) correspond to the denitration catalyst pore passages (1) one by one, a plurality of connecting cylinders (23) are fixedly connected to the support plate (21) towards one side of the denitration catalyst corresponding to the through holes (24), each through hole (24) is provided with one connecting cylinder (23) corresponding to the connecting cylinder, when the support plate (21) abuts against one end of the denitration catalyst, the connecting cylinders (23) slide into the pore passages (1), the peripheral side wall of the connecting cylinders (23) is arranged at intervals with the inner wall of the pore passages (1), a plurality of guide cylinders (22) for guiding the flue gas into the connecting cylinders (23) are fixedly connected to the support plate (21) away from one side of the denitration catalyst corresponding to the through holes (24), each through hole (24) is provided with a guide cylinder (22) which is arranged corresponding to the through hole.
6. The denitration catalyst according to claim 5, wherein the guide cylinder (22) is a square cylinder, the end face of the guide cylinder (22) is square, first guide surfaces are arranged on four side faces of the inner wall of the guide cylinder (22), one side of each first guide surface, which is far away from the support plate (21), is flush with the outer wall of the guide cylinder (22), and two adjacent guide cylinders (22) are fixedly connected.
7. The denitration catalyst according to claim 6, wherein the connecting cylinder (23) is a square cylinder, the end face of the connecting cylinder (23) is square, second guide surfaces are arranged on four side faces of the outer wall of the connecting cylinder (23), and one side of each second guide surface, which is far away from the support plate (21), is obliquely arranged in the direction close to the inner wall of the guide cylinder (22).
8. The process for producing a denitration catalyst according to any one of claims 1 to 3, comprising the steps of,
s1, mixing: uniformly mixing titanium dioxide, ammonium metavanadate, ammonium metatungstate, monoethanolamine aqueous solution, denitration catalyst fiber, polyethylene oxide, a lubricant, a plasticizer and a toughening agent, and kneading to prepare a mixture;
s2, ageing: sealing and packaging the mixture and aging;
s3, extrusion: processing the aged mixture into a honeycomb blank;
s4, drying: drying the honeycomb blank in two sections to obtain a honeycomb dried material;
s5, roasting: roasting the honeycomb-shaped dry material to be shaped;
s6, cutting: and taking out the roasted honeycomb-shaped dried material, cooling to room temperature, and cutting two ends to be flat to obtain the denitration catalyst.
9. The process for producing a denitration catalyst according to any one of claims 4 to 7, comprising the steps of,
s1, mixing: uniformly mixing titanium dioxide, ammonium metavanadate, ammonium metatungstate, monoethanolamine aqueous solution, denitration catalyst fiber, polyethylene oxide, a lubricant, a plasticizer and a toughening agent, and kneading to prepare a mixture;
s2, ageing: sealing and packaging the mixture and aging;
s3, extrusion die pressing: processing one part of the aged mixture into a honeycomb blank, and preparing the other part of the aged mixture into a flow guide mechanism blank through a die;
s4, drying: the honeycomb blank and the guide mechanism blank are dried in two sections to obtain a honeycomb dried material and a guide mechanism dried material;
s5, roasting: roasting and shaping the honeycomb-shaped drying material and the drying material of the diversion mechanism;
s6, cutting and trimming: cutting two ends of the roasted honeycomb-shaped drying material to be flat to prepare a denitration catalyst, and trimming the roasted drying material of the diversion mechanism to prepare the diversion mechanism;
s7, assembling: assembling the denitration catalyst and the flow guide mechanism.
10. The process according to claim 9, wherein the denitration catalyst comprises: and a filtering step is also included between the mixing and ageing steps, and the filtering step is to filter the mixture to remove impurities.
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|---|---|---|---|---|
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Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0756891A1 (en) * | 1995-07-26 | 1997-02-05 | Corning Incorporated | Iron zeolite for conversion of NOx |
| CN1968918A (en) * | 2004-06-18 | 2007-05-23 | 巴斯福股份公司 | Method for the continuous synthesis of methylamines |
| CN101676024A (en) * | 2008-09-17 | 2010-03-24 | 晶锐瓷业（北京）有限公司 | Faviform ammonia-method selective-catalytic-reduction denitrified catalyst and preparation method thereof |
| CN102413905A (en) * | 2009-02-27 | 2012-04-11 | 康宁股份有限公司 | Ceria-zirconia-zeolite catalyst body |
| CN102489151A (en) * | 2011-12-19 | 2012-06-13 | 江苏科行环境工程技术有限公司 | Blockage prevention and wearing resisting device for SCR honeycomb catalyst |
| CN102614866A (en) * | 2012-03-01 | 2012-08-01 | 浙江大学 | Honeycomb SCR smoke denitration catalyst embryoid body and preparation method thereof |
| CN103143396A (en) * | 2013-03-04 | 2013-06-12 | 郑州康宁特环保工程技术有限公司 | Honeycomb flue gas denitrification catalyst and preparation method thereof |
| CN103191722A (en) * | 2013-04-23 | 2013-07-10 | 江苏龙源催化剂有限公司 | Crosslinked montmorillonite honeycomb type denitration catalyst and preparation method thereof |
| CN103495413A (en) * | 2013-09-23 | 2014-01-08 | 宜兴市宜刚环保工程材料有限公司 | Low-cost denitration catalyst and preparation process thereof |
| CN103586016A (en) * | 2013-11-14 | 2014-02-19 | 索平 | Honeycomb type selective catalytic reduction denitration catalyst and preparation method thereof |
| CN103752347A (en) * | 2014-01-26 | 2014-04-30 | 南京宇行环保科技有限公司 | Preparation method of honeycomb denitration catalyst |
| CN103877970A (en) * | 2014-03-24 | 2014-06-25 | 中安庆华河北节能环保工程技术有限公司 | Honeycombed waste gas denitrification catalyst |
| CN104611780A (en) * | 2015-01-28 | 2015-05-13 | 武汉科丝力纤维制造有限公司 | RP-CHOP denitration catalyst fiber and catalyst prepared by same |
| CN105709843A (en) * | 2016-03-09 | 2016-06-29 | 中国科学院地球环境研究所 | Low-temperature preparation method for TiO2 thin film with efficient photocatalytic activity |
| CN110639504A (en) * | 2019-11-06 | 2020-01-03 | 山东博霖环保科技发展有限公司 | Honeycomb type low-temperature flue gas denitration catalyst and preparation method thereof |
| CN110743533A (en) * | 2019-11-06 | 2020-02-04 | 山东博霖环保科技发展有限公司 | Production process of denitration catalyst |
| CN112156652A (en) * | 2020-09-16 | 2021-01-01 | 北京科技大学 | Abrasion-resistant and anti-clogging method for honeycomb type denitration catalyst |
| CN212731394U (en) * | 2020-06-22 | 2021-03-19 | 上海徕宁实业有限公司 | Gas guide structure based on honeycomb structure |
-
2021
- 2021-05-22 CN CN202110561226.9A patent/CN113509924B/en active Active
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0756891A1 (en) * | 1995-07-26 | 1997-02-05 | Corning Incorporated | Iron zeolite for conversion of NOx |
| CN1968918A (en) * | 2004-06-18 | 2007-05-23 | 巴斯福股份公司 | Method for the continuous synthesis of methylamines |
| CN101676024A (en) * | 2008-09-17 | 2010-03-24 | 晶锐瓷业（北京）有限公司 | Faviform ammonia-method selective-catalytic-reduction denitrified catalyst and preparation method thereof |
| CN102413905A (en) * | 2009-02-27 | 2012-04-11 | 康宁股份有限公司 | Ceria-zirconia-zeolite catalyst body |
| CN102489151A (en) * | 2011-12-19 | 2012-06-13 | 江苏科行环境工程技术有限公司 | Blockage prevention and wearing resisting device for SCR honeycomb catalyst |
| CN102614866A (en) * | 2012-03-01 | 2012-08-01 | 浙江大学 | Honeycomb SCR smoke denitration catalyst embryoid body and preparation method thereof |
| CN103143396A (en) * | 2013-03-04 | 2013-06-12 | 郑州康宁特环保工程技术有限公司 | Honeycomb flue gas denitrification catalyst and preparation method thereof |
| CN103191722A (en) * | 2013-04-23 | 2013-07-10 | 江苏龙源催化剂有限公司 | Crosslinked montmorillonite honeycomb type denitration catalyst and preparation method thereof |
| CN103495413A (en) * | 2013-09-23 | 2014-01-08 | 宜兴市宜刚环保工程材料有限公司 | Low-cost denitration catalyst and preparation process thereof |
| CN103586016A (en) * | 2013-11-14 | 2014-02-19 | 索平 | Honeycomb type selective catalytic reduction denitration catalyst and preparation method thereof |
| CN103752347A (en) * | 2014-01-26 | 2014-04-30 | 南京宇行环保科技有限公司 | Preparation method of honeycomb denitration catalyst |
| CN103877970A (en) * | 2014-03-24 | 2014-06-25 | 中安庆华河北节能环保工程技术有限公司 | Honeycombed waste gas denitrification catalyst |
| CN104611780A (en) * | 2015-01-28 | 2015-05-13 | 武汉科丝力纤维制造有限公司 | RP-CHOP denitration catalyst fiber and catalyst prepared by same |
| CN105709843A (en) * | 2016-03-09 | 2016-06-29 | 中国科学院地球环境研究所 | Low-temperature preparation method for TiO2 thin film with efficient photocatalytic activity |
| CN110639504A (en) * | 2019-11-06 | 2020-01-03 | 山东博霖环保科技发展有限公司 | Honeycomb type low-temperature flue gas denitration catalyst and preparation method thereof |
| CN110743533A (en) * | 2019-11-06 | 2020-02-04 | 山东博霖环保科技发展有限公司 | Production process of denitration catalyst |
| CN212731394U (en) * | 2020-06-22 | 2021-03-19 | 上海徕宁实业有限公司 | Gas guide structure based on honeycomb structure |
| CN112156652A (en) * | 2020-09-16 | 2021-01-01 | 北京科技大学 | Abrasion-resistant and anti-clogging method for honeycomb type denitration catalyst |
Non-Patent Citations (1)
| Title |
|---|
| 唐婕等: "《环保陶瓷生产与应用》", 31 January 2018 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115624968A (en) * | 2022-11-14 | 2023-01-20 | 国能龙源环保有限公司 | Method for preparing denitration catalyst by utilizing waste wind power blades and application |
| CN115624968B (en) * | 2022-11-14 | 2024-02-02 | 国能龙源环保有限公司 | Method for preparing denitration catalyst by using waste wind power blades and application |
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|---|---|
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