CN110586199B - Combined enamelled wire machine waste gas treatment catalyst and preparation method thereof - Google Patents
Combined enamelled wire machine waste gas treatment catalyst and preparation method thereof Download PDFInfo
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- 239000003054 catalyst Substances 0.000 title claims abstract description 98
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 239000002912 waste gas Substances 0.000 title claims abstract description 15
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 63
- 229910052697 platinum Inorganic materials 0.000 claims description 31
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 28
- 238000000576 coating method Methods 0.000 claims description 22
- 239000011248 coating agent Substances 0.000 claims description 21
- RCFVMJKOEJFGTM-UHFFFAOYSA-N cerium zirconium Chemical compound [Zr].[Ce] RCFVMJKOEJFGTM-UHFFFAOYSA-N 0.000 claims description 17
- 229910000510 noble metal Inorganic materials 0.000 claims description 17
- 239000006104 solid solution Substances 0.000 claims description 17
- 229910052763 palladium Inorganic materials 0.000 claims description 14
- 239000000243 solution Substances 0.000 claims description 13
- 239000000843 powder Substances 0.000 claims description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 11
- 239000007864 aqueous solution Substances 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- NWAHZABTSDUXMJ-UHFFFAOYSA-N platinum(2+);dinitrate Chemical compound [Pt+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O NWAHZABTSDUXMJ-UHFFFAOYSA-N 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000010926 purge Methods 0.000 claims description 6
- 238000002791 soaking Methods 0.000 claims description 6
- 229910002651 NO3 Inorganic materials 0.000 claims description 5
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 238000011068 loading method Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910017604 nitric acid Inorganic materials 0.000 claims description 3
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims 2
- 210000003298 dental enamel Anatomy 0.000 claims 1
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 abstract description 15
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 abstract description 7
- 229930195733 hydrocarbon Natural products 0.000 abstract description 5
- 239000004215 Carbon black (E152) Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Natural products C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 4
- -1 methane hydrocarbon Chemical class 0.000 abstract description 4
- 239000008096 xylene Substances 0.000 abstract description 4
- 230000003197 catalytic effect Effects 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- GPNDARIEYHPYAY-UHFFFAOYSA-N palladium(ii) nitrate Chemical compound [Pd+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O GPNDARIEYHPYAY-UHFFFAOYSA-N 0.000 description 1
- CLSUSRZJUQMOHH-UHFFFAOYSA-L platinum dichloride Chemical compound Cl[Pt]Cl CLSUSRZJUQMOHH-UHFFFAOYSA-L 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 150000003738 xylenes Chemical class 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/864—Removing carbon monoxide or hydrocarbons
-
- 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
- B01D53/8678—Removing components of undefined structure
- B01D53/8687—Organic components
-
- 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
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/56—Platinum group metals
- B01J23/63—Platinum group metals with rare earths or actinides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/40—Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/702—Hydrocarbons
- B01D2257/7027—Aromatic hydrocarbons
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/20—Capture or disposal of greenhouse gases of methane
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Biomedical Technology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention belongs to the technical field of waste gas treatment, and particularly relates to a combined type enamelled wire machine waste gas treatment catalyst and a preparation method thereof. According to the invention, through the combination mode of the honeycomb catalyst and the integral wire mesh catalyst, the catalytic performance is effectively improved, the catalyst cost is reduced, the waste gas treatment effect is high, the removal rate is high, and the emission of toluene, xylene and other non-methane hydrocarbon in the enameled wire waste gas is reduced; the two catalysts are alternately paved, can be disassembled and are easy and convenient to operate.
Description
Technical Field
The invention belongs to the technical field of waste gas treatment, and particularly relates to a combined type enamelled wire machine waste gas treatment catalyst and a preparation method thereof.
Background
The enameled wire can generate organic waste gas with odor such as benzene, dimethylbenzene and the like in the preparation process, so that the enameled wire has great harm to the environment and threatens the health of human beings. With the strict emission regulations, the exhaust emission limit of the enamelled wire machine is reduced from 120mg/m 3 to 50mg/m 3, which brings great challenges to enamelled wire manufacturers. The existing effective waste gas treatment method is catalytic oxidation treatment, and a catalyst needs to be installed at the outlet of an exhaust pipe. Conventional ceramic catalysts are more commonly used, but after the regulations are tightened, the conventional ceramic catalysts cannot meet the emission requirements, and the catalysts need to be improved to increase the conversion rate.
Disclosure of Invention
The invention aims to provide a combined enamelled wire machine waste gas treatment catalyst which can effectively treat waste gas and meet emission requirements.
According to the technical scheme of the invention, the combined enamelled wire machine exhaust gas treatment catalyst comprises a honeycomb catalyst and an integral wire mesh catalyst which are alternately paved, wherein the honeycomb catalyst comprises a honeycomb framework and a first active component coating coated on the surface of the honeycomb framework, and the integral wire mesh catalyst comprises a wire mesh carrier and a second active component coating loaded on the surface of the wire mesh carrier; the active components of the first active component coating and the second active component coating are platinum or chloride or nitrate of palladium and platinum.
Further, the thickness of each layer of the monolithic wire mesh catalyst is 10-50mm.
Further, the carrier of the monolithic wire mesh catalyst is a wire mesh with a wire diameter of 0.3-0.5 mm.
The invention also provides a preparation method of the exhaust gas treatment catalyst of the combined enamelled wire machine, which comprises the following steps,
A. Preparation of honeycomb catalyst: taking a metal honeycomb or honeycomb porcelain as a honeycomb framework, coating a mixture coating of cerium-zirconium solid solution and gamma-alumina on the honeycomb framework, and drying to obtain a honeycomb catalyst, wherein the cerium-zirconium solid solution is a solid solution loaded with noble metals palladium, platinum or palladium and platinum;
B. Preparation of the monolithic wire mesh catalyst:
B1. pretreatment of a carrier: roasting the wire mesh carrier at a high temperature of 450-650 ℃ for 2-4 hours, and cooling for standby;
B2. Loading of active components: adding nitric acid into a certain amount of deionized water, adjusting the pH value of the solution to 2-4, adding alumina powder, adjusting the concentration of alumina to 10-60 wt%, and stirring for 2-5 hours to obtain an aqueous solution; adding the active component into the aqueous solution, and stirring for 0.5-2 hours to prepare an active component solution, wherein the active component is platinum or chloride or nitrate of palladium and platinum; soaking the wire mesh carrier pretreated by the method B1 into the prepared active component solution for 1-10 minutes, then purging by an air gun to remove redundant slurry, repeatedly soaking and purging for 3-5 times, drying for 1-3 hours at 100-150 ℃, then roasting for 2-4 hours at 400-650 ℃, and cooling to obtain the integral wire mesh catalyst;
C. And B, mounting the integral wire mesh catalyst obtained in the step B on the honeycomb catalyst prepared in the step A, and placing the honeycomb catalyst on the integral wire mesh catalyst, so that the catalysts are alternately paved to form a catalyst combination, wherein the thickness of each layer of integral wire mesh catalyst is 10-50mm.
Further, the preparation method of the supported noble metal palladium, platinum or solid solution of palladium and platinum in the step A comprises the following steps: and adding palladium nitrate or platinum nitrate solution into cerium-zirconium powder aqueous solution, calculating the weight ratio of noble metal platinum or palladium to cerium-zirconium powder to be 0.05% -3%, stirring for 1-3 hours, drying, roasting for 1-4 hours in a tube furnace at 300-500 ℃ in a nitrogen atmosphere, and cooling to room temperature to obtain the cerium-zirconium powder solid solution containing noble metal.
The invention has the beneficial effects that: the combination mode of the honeycomb catalyst and the integral wire mesh catalyst effectively improves the catalytic performance, reduces the catalyst cost, has high waste gas treatment effect and high removal rate, and reduces the emission of toluene, xylene and other non-methane hydrocarbon in the enameled wire waste gas; the two catalysts are alternately paved, can be disassembled and are easy and convenient to operate.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Reference numerals illustrate: 1-honeycomb catalyst, 2-monolithic wire mesh catalyst.
Detailed Description
The invention will be further described with reference to specific examples and figures.
As shown in the figure: the combined enamelled wire machine exhaust gas treatment catalyst comprises a honeycomb catalyst 1 and an integral wire mesh catalyst 2 which are alternately paved, wherein three layers are shown in the figure, the middle layer is the integral wire mesh catalyst, and the arrow shows the air flow direction; wherein the honeycomb catalyst 1 comprises a honeycomb skeleton and a first active component coating coated on the surface of the honeycomb skeleton, and the integral wire mesh catalyst 2 comprises a wire mesh carrier and a second active component coating loaded on the surface of the wire mesh carrier; the active components of the first active component coating and the second active component coating are platinum or chloride or nitrate of palladium and platinum.
Specifically, in order to optimize the exhaust gas treatment effect, the carrier of the monolithic wire mesh catalyst 2 is a wire mesh with a wire diameter of 0.3-0.5mm, and the thickness of each layer of monolithic wire mesh catalyst 2 is 10-50mm. The first active component coating and the second active component coating can be mixture coatings of cerium-zirconium solid solution and gamma-alumina, wherein the cerium-zirconium solid solution is supported noble metal palladium, platinum or solid solution of palladium and platinum.
Example 1
The preparation method of the combined enamelled wire machine exhaust gas treatment catalyst comprises alternately paving a honeycomb catalyst and an integral silk screen catalyst (three layers are shown in the figure), wherein the size is 150 x 100mm, the mesh number of the honeycomb skeleton of the honeycomb catalyst is 200, the thickness of the integral silk screen catalyst is 20mm, the catalyst formula is a monoplatinum formula, the preparation comprises the following steps of,
A. Preparation of honeycomb catalyst: adopting a conventional honeycomb catalyst preparation method, taking a metal honeycomb or honeycomb porcelain with the mesh number of 200 as a honeycomb framework, treating for 2 hours at 800 ℃, coating a mixture coating of cerium-zirconium solid solution and gamma-alumina on the honeycomb framework, and drying;
The cerium-zirconium solid solution is a solid solution of supported noble metal platinum, and the preparation method comprises the following steps: adding a certain amount of platinum nitrate solution into cerium-zirconium powder aqueous solution, calculating the weight ratio of noble metal platinum to cerium-zirconium powder to be 0.05% -3%, stirring for 1-3 hours, drying at 100 ℃, roasting for 1-4 hours at 300-500 ℃ in a tube furnace under nitrogen atmosphere, and cooling to room temperature to obtain cerium-zirconium powder solid solution containing noble metal platinum; preparing a single platinum honeycomb catalyst with a noble metal formula of 30g/ft 3;
B. Preparation of the monolithic wire mesh catalyst:
B1. Pretreatment of a carrier: roasting a wire mesh carrier with the size of 150mm, 20mm and the wire diameter of 0.3-0.5mm at the high temperature of 450-650 ℃ for 2-4h, and optionally roasting at the high temperature of 500 ℃ for 2h, and cooling for later use;
B2. loading of active components: adding 63% nitric acid solution into 1000g deionized water, adjusting the pH value of the solution to 2-4, adding 300g alumina powder (the concentration of alumina is 10-60 wt%), and stirring for 2-5 hours to obtain an aqueous solution; weighing platinum nitrate, adding the platinum nitrate into the aqueous solution, calculating the weight ratio of noble metal to alumina to be 0.1%, and stirring for 1 hour to prepare a platinum nitrate solution; soaking the wire mesh carrier pretreated by the method B1 into the prepared platinum nitrate solution for 1-10 minutes, purging by an air gun to remove redundant slurry, repeatedly soaking and purging for 3-5 times, drying for 1-3 hours at 100-150 ℃, roasting for 2-4 hours at 400-650 ℃, and cooling to obtain the integral wire mesh catalyst with the platinum content of 5g/ft 3;
C. And (C) mounting the integral wire mesh catalyst obtained in the step (B) on the honeycomb catalyst prepared in the step (A), and placing the honeycomb catalyst on the integral wire mesh catalyst to form a catalyst combination.
Example two
Based on example one, the noble metal platinum content in the monolithic wire mesh catalyst was 10g/ft3 (the amount of platinum nitrate in step B2 was adjusted).
Example III
Based on the first embodiment, the noble metal platinum content in the monolithic wire mesh catalyst was 15g/ft3.
Example IV
Based on the first embodiment, the noble metal platinum content of the honeycomb catalyst is 20g/ft3.
Comparative examples
The catalyst included only honeycomb catalyst, and the catalyst preparation method was the same as in example one, with a catalyst formulation of 30g/ft3 monopt.
The conversion of toluene, xylenes, and other non-methane hydrocarbons for each of the example catalysts was as follows:
| Examples | Toluene conversion (%) | Xylene conversion (%) | Non-methane hydrocarbon conversion (%) |
| Example 1 | 88 | 94 | 87 |
| Example two | 87 | 90 | 90 |
| Example III | 92 | 95 | 93 |
| Example IV | 94 | 97 | 93 |
| Comparative examples | 75 | 83 | 71 |
As can be seen from the table: the conversion rate of toluene, dimethylbenzene and other non-methane hydrocarbon is obviously higher than that of a honeycomb catalyst, and the waste gas treatment effect is effectively improved.
In the first to fourth embodiments, the catalyst size, the number of honeycomb catalyst meshes, the thickness of the integral type silk screen catalyst and the number of layers of the honeycomb catalyst and the integral type silk screen catalyst are all adjustable; the platinum nitrate may be replaced by platinum chloride or a chloride or nitrate salt of palladium and platinum.
Claims (4)
1. A combined enamelled wire machine exhaust gas treatment catalyst, which is characterized by comprising a honeycomb catalyst (1) and a monolithic wire mesh catalyst (2) which are alternately paved, wherein the honeycomb catalyst (1) comprises a honeycomb framework and a first active component coating coated on the surface of the honeycomb framework, and the monolithic wire mesh catalyst (2) comprises a wire mesh carrier and a second active component coating supported on the surface of the wire mesh carrier; the active components of the first active component coating and the second active component coating are platinum or chloride or nitrate of palladium and platinum,
Wherein the platinum content of the coating of the monolithic wire mesh catalyst (2) is 5g/ft 3; the carrier of the integral wire mesh catalyst (2) is a wire mesh with the wire diameter of 0.3-0.5 mm.
2. The combined wire enamel exhaust treatment catalyst as claimed in claim 1, characterized in that the thickness of each layer of the monolithic wire gauze catalyst (2) is 10-50mm.
3. A preparation method of a combined enamelling wire machine waste gas treatment catalyst is characterized by comprising the following steps,
A. preparation of honeycomb catalyst: taking metal or ceramic as a honeycomb framework, coating a mixture coating of cerium-zirconium solid solution and gamma-alumina on the honeycomb framework, and drying to obtain a honeycomb catalyst, wherein the cerium-zirconium solid solution is a solid solution loaded with noble metal platinum or palladium and platinum;
B. Preparation of the monolithic wire mesh catalyst:
B1. Pretreatment of a carrier: roasting the wire mesh carrier at a high temperature of 450-650 ℃ for 2-4 hours, and cooling for standby;
B2. Loading of active components: adding nitric acid into a certain amount of deionized water, regulating the pH value of the solution to be 2-4, adding alumina powder, regulating the concentration of alumina to be 10-60 wt%, and stirring for 2-5 hours to obtain an aqueous solution; adding the active component into the aqueous solution, and stirring for 0.5-2 hours to prepare an active component solution, wherein the active component is platinum or chloride or nitrate of palladium and platinum; soaking the wire mesh carrier pretreated by the method B1 into the prepared active component solution for 1-10 minutes, then purging by an air gun to remove redundant slurry, repeatedly soaking and purging for 3-5 times, drying for 1-3 hours at 100-150 ℃, then roasting for 2-4 hours at 400-650 ℃, and cooling to obtain the integral wire mesh catalyst;
C. And B, mounting the integral wire mesh catalyst obtained in the step B on the honeycomb catalyst prepared in the step A, and placing the honeycomb catalyst on the integral wire mesh catalyst, so that the catalysts are alternately paved to form a catalyst combination, wherein the thickness of each layer of integral wire mesh catalyst is 10-50mm.
4. The method for preparing a combined type enamelling wire machine exhaust gas treatment catalyst according to claim 3, characterized in that the method for preparing a solid solution of supported noble metal platinum in the step a comprises the following steps: adding a platinum nitrate solution into a cerium-zirconium powder aqueous solution, calculating the weight ratio of noble metal platinum to cerium-zirconium powder to be 0.05% -3%, stirring for 1-3 hours, drying, roasting for 1-4 hours at 300-500 ℃ in a tube furnace under nitrogen atmosphere, and cooling to room temperature to obtain the cerium-zirconium powder solid solution containing noble metal.
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| CN113617224A (en) * | 2021-08-23 | 2021-11-09 | 湖州乙戈环保设备有限公司 | Treatment device and treatment method for nitrogen oxide waste gas for high-speed wire enamelling machine |
| CN114505074A (en) * | 2022-03-03 | 2022-05-17 | 无锡威孚环保催化剂有限公司 | Catalyst for double-reduction type non-road gasoline engine and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101244387A (en) * | 2008-03-21 | 2008-08-20 | 无锡威孚环保催化剂有限公司 | Exhaust purification cellular catalyst for enamelling machine and method of producing the same |
| CN101444743A (en) * | 2008-12-12 | 2009-06-03 | 无锡威孚环保催化剂有限公司 | Catalyst for processing particles in diesel engine emissions, and preparation method thereof |
| CN101530786A (en) * | 2009-04-13 | 2009-09-16 | 无锡威孚环保催化剂有限公司 | Preparation for wire-mesh catalyst for volatile organic compound waste gas |
| CN103240083A (en) * | 2013-05-16 | 2013-08-14 | 浙江师范大学 | Monolithic Pd catalyst for purifying industrial organic waste gas and preparation method thereof |
| CN104117262A (en) * | 2014-08-06 | 2014-10-29 | 江苏句容联合铜材有限公司 | Drawer type tail gas purification device |
| CN107597105A (en) * | 2017-09-29 | 2018-01-19 | 盐城工学院 | A kind of waste gas purification catalysis material and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100871898B1 (en) * | 2005-10-28 | 2008-12-05 | 에스케이에너지 주식회사 | Exhaust gas purifying device for diesel engine |
| CN211246602U (en) * | 2019-10-12 | 2020-08-14 | 无锡威孚环保催化剂有限公司 | Combined type waste gas treatment catalyst for wire enameling machine |
-
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101244387A (en) * | 2008-03-21 | 2008-08-20 | 无锡威孚环保催化剂有限公司 | Exhaust purification cellular catalyst for enamelling machine and method of producing the same |
| CN101444743A (en) * | 2008-12-12 | 2009-06-03 | 无锡威孚环保催化剂有限公司 | Catalyst for processing particles in diesel engine emissions, and preparation method thereof |
| CN101530786A (en) * | 2009-04-13 | 2009-09-16 | 无锡威孚环保催化剂有限公司 | Preparation for wire-mesh catalyst for volatile organic compound waste gas |
| CN103240083A (en) * | 2013-05-16 | 2013-08-14 | 浙江师范大学 | Monolithic Pd catalyst for purifying industrial organic waste gas and preparation method thereof |
| CN104117262A (en) * | 2014-08-06 | 2014-10-29 | 江苏句容联合铜材有限公司 | Drawer type tail gas purification device |
| CN107597105A (en) * | 2017-09-29 | 2018-01-19 | 盐城工学院 | A kind of waste gas purification catalysis material and preparation method thereof |
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