CN113181910B - Marine diesel engine high-sulfur tail gas particle trapping catalyst and preparation method thereof - Google Patents
Marine diesel engine high-sulfur tail gas particle trapping catalyst and preparation method thereof Download PDFInfo
- Publication number
- CN113181910B CN113181910B CN202110465009.XA CN202110465009A CN113181910B CN 113181910 B CN113181910 B CN 113181910B CN 202110465009 A CN202110465009 A CN 202110465009A CN 113181910 B CN113181910 B CN 113181910B
- Authority
- CN
- China
- Prior art keywords
- carrier
- catalyst
- coating
- diesel engine
- tail gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 75
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 45
- 239000011593 sulfur Substances 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title claims abstract description 29
- 239000002245 particle Substances 0.000 title claims abstract description 28
- 239000006255 coating slurry Substances 0.000 claims abstract description 46
- 239000011248 coating agent Substances 0.000 claims abstract description 45
- 238000000576 coating method Methods 0.000 claims abstract description 45
- 239000004480 active ingredient Substances 0.000 claims abstract description 38
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000002243 precursor Substances 0.000 claims abstract description 17
- 239000011148 porous material Substances 0.000 claims description 50
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 36
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 31
- 239000000463 material Substances 0.000 claims description 31
- 238000003756 stirring Methods 0.000 claims description 24
- 239000008367 deionised water Substances 0.000 claims description 17
- 229910021641 deionized water Inorganic materials 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 16
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 16
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 229910052684 Cerium Inorganic materials 0.000 claims description 5
- 229910052878 cordierite Inorganic materials 0.000 claims description 5
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims description 5
- 229910052763 palladium Inorganic materials 0.000 claims description 5
- 229910052697 platinum Inorganic materials 0.000 claims description 5
- 239000000395 magnesium oxide Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 239000000725 suspension Substances 0.000 claims description 2
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims 2
- WWHFPJVBJUJTEA-UHFFFAOYSA-N n'-[3-chloro-4,5-bis(prop-2-ynoxy)phenyl]-n-methoxymethanimidamide Chemical compound CONC=NC1=CC(Cl)=C(OCC#C)C(OCC#C)=C1 WWHFPJVBJUJTEA-UHFFFAOYSA-N 0.000 abstract description 8
- 230000001988 toxicity Effects 0.000 abstract 1
- 231100000419 toxicity Toxicity 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 37
- 230000000052 comparative effect Effects 0.000 description 24
- 239000007789 gas Substances 0.000 description 17
- 238000011069 regeneration method Methods 0.000 description 16
- 239000004215 Carbon black (E152) Substances 0.000 description 11
- 229930195733 hydrocarbon Natural products 0.000 description 11
- 150000002430 hydrocarbons Chemical class 0.000 description 11
- 239000013618 particulate matter Substances 0.000 description 10
- 230000008929 regeneration Effects 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 7
- 230000008021 deposition Effects 0.000 description 7
- 239000000446 fuel Substances 0.000 description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 6
- UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical compound [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 description 6
- 238000001354 calcination Methods 0.000 description 6
- 238000005303 weighing Methods 0.000 description 6
- GJEAMHAFPYZYDE-UHFFFAOYSA-N [C].[S] Chemical compound [C].[S] GJEAMHAFPYZYDE-UHFFFAOYSA-N 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 231100000572 poisoning Toxicity 0.000 description 4
- 230000000607 poisoning effect Effects 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 3
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 229910052863 mullite Inorganic materials 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 229910052761 rare earth metal Inorganic materials 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 239000004408 titanium dioxide Substances 0.000 description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 3
- 229910052726 zirconium Inorganic materials 0.000 description 3
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 2
- 229910000505 Al2TiO5 Inorganic materials 0.000 description 2
- 229910052779 Neodymium Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 229910052746 lanthanum Inorganic materials 0.000 description 2
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- AABBHSMFGKYLKE-SNAWJCMRSA-N propan-2-yl (e)-but-2-enoate Chemical compound C\C=C\C(=O)OC(C)C AABBHSMFGKYLKE-SNAWJCMRSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 2
- 238000001157 Fourier transform infrared spectrum Methods 0.000 description 1
- 241000565362 Fraxinus velutina Species 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000010763 heavy fuel oil Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Classifications
-
- 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
- B01J23/58—Platinum group metals with alkali- or alkaline earth metals
-
- 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
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
-
- 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
- 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
- B01J23/64—Platinum group metals with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/648—Vanadium, niobium or tantalum or polonium
- B01J23/6482—Vanadium
-
- 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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/20—Carbon compounds
- B01J27/22—Carbides
- B01J27/224—Silicon carbide
-
- 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
- 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
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/01—Engine exhaust gases
- B01D2258/012—Diesel engines and lean burn gasoline engines
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Combustion & Propulsion (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Catalysts (AREA)
Abstract
The invention relates to the technical field of marine diesel engine tail gas aftertreatment, in particular to a marine diesel engine high-sulfur tail gas particle trapping catalyst and a preparation method thereof. The invention relates to a marine diesel engine high sulfur tail gas particle trapping catalyst, which comprises a carrier and a coating, wherein the carrier adopts a wall flow type honeycomb carrier, the coating is coated on part of or all of the length of the carrier in the axial direction, and the coating contains active ingredients. The specific preparation process of the catalyst comprises the following steps: preparing an active ingredient precursor solution, preparing coating slurry containing an active ingredient, coating the coating slurry on a carrier, and roasting a catalyst. The CDPF catalyst provided by the invention has the advantages of low CO/HC ignition temperature and balance point temperature, good sulfur resistance and toxicity, high particle trapping efficiency and small flow resistance, and is suitable for treating high-sulfur tail gas discharged by a marine high-power diesel engine burning heavy high-sulfur oil.
Description
Technical Field
The invention relates to the technical field of marine diesel engine tail gas aftertreatment, in particular to a marine diesel engine high-sulfur tail gas particle trapping catalyst and a preparation method thereof.
Background
The diesel engine has the advantages of low relative oil consumption, high power, durability, reliability and the like, plays an important role in the transportation industry, and has extremely high duty ratio in the application fields of heavy passenger/trucks, agricultural machinery, engineering machinery, ocean vessels, power generation and the like. Because of the working condition characteristics, the diesel engine emits less Hydrocarbon (HC) and CO, but more particulate matter PM and nitrogen oxides NOx, which are harmful to human health and the environment, are important causes of environmental pollution phenomena such as haze, acid rain, photochemical smog and the like. There have long been several difficulties with diesel engine pollutant emission control techniques.
Diesel particulate trap catalysts (catalyzed diesel particulate filter, abbreviated as CDPFs) are considered to be the best means for removing soot particulates from diesel exhaust to high emission standards under current technical conditions. CDPFs are capable of trapping Particulate Matter (PM) in diesel exhaust and storing it in a matrix, and the oxidation of the catalyst causes the oxidative decomposition of soluble organic components (soluble organic fraction, SOF for short) in the particulate matter to maintain continuous operation and low flow resistance, a process called regeneration. DPF technology has been developed for many years, and is widely applied to land vehicles in various countries, so that remarkable effects are achieved.
However, marine diesel engines and land diesel engine technologies have great differences, and are subject to differences in oil quality, ship internal space, emission regulations and the like, so that the development of CDPF technology matched with two-stroke low-speed diesel engines commonly used for ocean vessels is less at present. The main suppliers in the foreign industry have not completely broken through the technical key points of the flow resistance, low-temperature ignition, catalyst sulfur poisoning, ash deposition blocking and the like of the marine diesel CDPF, and cannot meet the requirements of mature commercial application. The main difficulties are as follows: in order to reduce the cost, the large marine diesel engine burns heavy fuel oil with high sulfur content, the discharged tail gas not only comprises a large amount of SOF and nitrate, but also contains a large amount of sulfate, vanadium, lead, nickel and other heavy metal components, the components are difficult to decompose under the conventional running condition, and once the components accumulate too much, the flow resistance is too high, the catalyst is poisoned and deactivated easily, and even the catalyst is seriously ablated and scrapped. This directly affects the fuel economy and catalyst operational reliability of the diesel engine, so it is more difficult for marine diesel CDPF catalysts to achieve particulate matter trapping and catalyst regeneration. If low sulfur fuel is used, the running cost of the ship is greatly increased, and only a few ports worldwide can provide low sulfur fuel. The existing fuel power equipment such as diesel engines and boilers on ships are designed according to high-sulfur fuel, and a power system is required to be modified to use low-sulfur fuel, otherwise, the lubrication, fuel injection and other systems of the ships are seriously affected.
In order to ensure operation reliability and lower flow resistance, the existing marine diesel CDPF catalyst generally adopts a wall-flow honeycomb ceramic carrier or a partial flow carrier (POC) with lower pore density (less than 100 meshes), and has lower coating consumption, so that the CO/HC ignition temperature is higher, the equilibrium point temperature is higher (more than 400 ℃), the regeneration rate and the particle trapping rate are low, the sulfur poisoning resistance is weaker, and the working efficiency of the marine diesel engine is adversely affected.
Disclosure of Invention
In order to solve the technical problems, the invention provides a marine diesel engine high-sulfur tail gas particle trapping catalyst and a preparation method thereof. The catalyst disclosed by the invention is used for treating high-sulfur tail gas discharged by a marine high-power diesel engine for burning heavy high-sulfur oil, and can solve the problems of easiness in poisoning and deactivation, short maintenance period, poor reliability, high equilibrium point temperature, low particle trapping efficiency and the like of the catalyst caused by burning heavy high-sulfur fuel oil by the marine diesel engine. The CDPF provided by the invention has the advantages of good sulfur resistance, long maintenance period, low balance point temperature, high particle trapping efficiency and the like, and can continuously and stably run for a long time within the exhaust temperature range (200-400 ℃) of a marine diesel engine.
In order to solve the defects in the prior art, the invention adopts the following technical scheme: the high-sulfur exhaust particle trapping catalyst for marine diesel engine includes one carrier with wall flow honeycomb carrier, one coating layer with active component in part or all of the carrier in the axial direction.
Further, the wall flow type honeycomb carrier is provided with parallel pore channels, adjacent pore channels on the end faces of two sides of the parallel pore channels are of alternating open and closed structures, and pore channel walls between the adjacent pore channels are microcosmic porous matrixes.
Further, the wall-flow honeycomb carrier is made of ceramic, preferably silicon carbide (SiC), cordierite, aluminum Titanate (AT) or mullite.
Further, the wall flow honeycomb carrier has a pore density of 200-300 mesh, a porosity of 30% -70%, and a median pore diameter of 7-40 microns.
Further, the coating is a combination of one or more of alumina, silica, magnesia, vanadium-containing compounds, zirconium oxide.
Further, the coating is used in an amount of 5-50g/L and has a particle size D 90 0.5-10 microns.
Further, the coating also contains rare earth elements, wherein the weight of the rare earth elements accounts for 1-25% of the weight of the coating, and the rare earth elements are one or more of cerium, zirconium, lanthanum and neodymium.
Further, the active ingredient in the coating is platinum and/or palladium, wherein the platinum is used in an amount of 1-50g/ft 3 The palladium content is 1-30g/ft 3 The dosage ratio of Pt to Pd is 40:1-1:10.
The preparation method of the marine diesel engine high-sulfur tail gas particle trapping catalyst comprises the following steps:
a. preparing an active ingredient precursor solution:
mixing the weighed active ingredients with hydroxyethyl cellulose with the weight being 3-10 times of that of the active ingredients, adding deionized water with the weight being 1-5 times of that of the hydroxyethyl cellulose into the mixture, and uniformly stirring;
b. preparing coating slurry containing active ingredients:
adding deionized water which is 3-10 times of the coating material in weight, uniformly stirring, adding the prepared active ingredient precursor solution, and uniformly stirring;
c. coating of the coating slurry on the support:
introducing a coating slurry containing an active ingredient into the pore channels of the catalyst carrier in the form of a suspension, wherein the coating slurry is introduced from a single end face or is introduced from two end faces for a plurality of times;
d. roasting of the catalyst:
and (3) placing the coated catalyst into a muffle furnace or a kiln, heating to 500 ℃, preserving heat for 0.5-2h, and naturally cooling to room temperature to obtain a catalyst finished product.
Further, in step c, the coating slurry is introduced into the channels of the catalyst support in one of the following ways:
(1) Immersing the carrier in the coating slurry, and exhausting air in the channels to ensure that the coating slurry is fully and uniformly distributed on the surfaces of the channel walls and in the pores of the honeycomb carrier;
(2) The compressed air is used as power to guide the coating slurry to be fully and uniformly distributed on the surfaces of the pore canal walls and in the pores of the carrier;
(3) The coating slurry is guided to be sufficiently uniformly distributed on the surfaces of the pore canal walls and in the pores of the carrier by means of negative pressure suction.
Compared with the prior art, the invention has the following advantages:
the invention is applied to the treatment of pollutants discharged by a marine high-power diesel engine with heavy high sulfur oil (sulfur content of 0.1-3.0 wt percent and heavy metal content of 5-1000 mg/kg) for combustion, and can play roles of high-efficiency trapping of particles in tail gas, high-efficiency removal of sulfate, low-temperature light-off and oxidization of HC and CO, and the like. The invention has the advantages of small flow resistance, high particle trapping efficiency, good sulfur poisoning resistance, easy regeneration, long maintenance period and the like, and has wide application prospect.
Drawings
FIG. 1 is ash content after continuous high sulfur soot-regeneration cycle experiments conducted in examples 1-3 and comparative examples 1-3.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be further described with reference to the examples.
Example 1
The preparation method of the marine diesel engine high-sulfur tail gas particle trapping catalyst comprises the following steps:
step a. Preparation of precursor solution of active ingredient
Pt usage is 40g/ft 3 Pd content is 1g/ft 3 Weighing Pt-containing solution and Pd-containing solution according to calculated amounts, adding hydroxyethyl cellulose 3 times of the sum of the weight of Pt element and Pd element into the Pt-containing solution, adding deionized water 3 times of the weight of the hydroxyethyl cellulose, and uniformly stirring;
step b preparation of coating slurry containing active ingredient
The coating material is a mixture of alumina and magnesia containing 25wt% cerium, the dosage of the mixture is 20g/L, and the granularity D 90 Adding deionized water with the weight of 5 times of that of the coating material into the coating material at the size of 2 microns, uniformly stirring, adding the prepared active ingredient precursor solution, and uniformly stirring;
step c. Application of coating slurry to support
The carrier is cordierite, the pore density is 200 meshes, the porosity is 40%, and the median pore diameter is 20 microns; introducing coating slurry into the carrier from two ends of the carrier in a negative pressure suction mode, so that the coating slurry is fully and uniformly distributed on the surfaces of the pore canal walls and in the pores of the carrier;
step d. Calcination of the catalyst
And (3) placing the coated catalyst into a muffle furnace, heating to 500 ℃, preserving heat for 2 hours, and naturally cooling to room temperature to obtain the finished catalyst.
Example 2
The preparation method of the marine diesel engine high-sulfur tail gas particle trapping catalyst comprises the following steps:
step a. Preparation of precursor solution of active ingredient
Pt usage is 30g/ft 3 Pd content is 3g/ft 3 Weighing Pt-containing solution and Pd-containing solution according to calculated amounts, adding hydroxyethyl cellulose which is 5 times of the sum of the weight of Pt element and Pd element into the Pt-containing solution, adding deionized water which is 5 times of the weight of the hydroxyethyl cellulose, and uniformly stirring;
step b preparation of coating slurry containing active ingredient
The coating material is a silica and zirconia blend containing 10wt% lanthanumThe dosage of the compound and the compound is 10g/L respectively, and the granularity D 90 Adding deionized water which is 8 times of the coating material in weight of the coating material into the coating material, uniformly stirring the coating material, adding the prepared active ingredient precursor solution, and uniformly stirring the coating material;
step c. Application of coating slurry to support
The carrier is made of silicon carbide, the pore density is 300 meshes, the porosity is 50%, and the median pore diameter is 10 microns; introducing coating slurry into one end of the carrier by using compressed air as power and fully and uniformly distributing the coating slurry in the pore canal walls and pores of the carrier;
step d. Calcination of the catalyst
And (3) placing the coated catalyst into a kiln, heating to 500 ℃, preserving heat for 1.5h, and naturally cooling to room temperature.
Example 3
The preparation method of the marine diesel engine high-sulfur tail gas particle trapping catalyst comprises the following steps:
step a. Preparation of precursor solution of active ingredient
Pt amount of 5g/ft 3 Pd content is 30g/ft 3 Weighing Pt-containing solution and Pd-containing solution according to calculated amounts, adding hydroxyethyl cellulose which is 6 times of the sum of the weight of Pt element and Pd element into the Pt-containing solution, adding deionized water which is 3 times of the weight of the hydroxyethyl cellulose into the mixture, and uniformly stirring the mixture;
step b preparation of coating slurry containing active ingredient
The coating material is a mixture of ammonium metavanadate and alumina containing 15wt% of zirconium, the dosage of the mixture is 5g/L and 25g/L respectively, and the granularity D 90 Adding deionized water with the weight of 10 times of that of the coating material into the coating material at the size of 6 microns, uniformly stirring, adding the prepared active ingredient precursor solution, and uniformly stirring;
step c. Application of coating slurry to support
The carrier is mullite, the pore density is 200 meshes, the porosity is 60%, and the median pore diameter is 15 microns; introducing coating slurry into the honeycomb carrier from two ends of the carrier in a negative pressure suction mode, so that the coating slurry is fully and uniformly distributed on the surfaces of the pore canal walls and in the pores of the honeycomb carrier;
step d. Calcination of the catalyst
And (3) placing the coated catalyst into a muffle furnace, heating to 500 ℃, preserving heat for 1h, and naturally cooling to room temperature.
Example 4
The preparation method of the marine diesel engine high-sulfur tail gas particle trapping catalyst comprises the following steps:
step a. Preparation of precursor solution of active ingredient
Pt usage is 3g/ft 3 Pd content is 30g/ft 3 Weighing Pt-containing solution and Pd-containing solution according to calculated amounts, adding hydroxyethyl cellulose which is 8 times of the sum of the weight of Pt element and Pd element into the Pt-containing solution, adding deionized water which is 2 times of the weight of the hydroxyethyl cellulose, and uniformly stirring;
step b preparation of coating slurry containing active ingredient
The coating material is alumina containing 10wt% cerium and 10wt% zirconium, the alumina dosage is 10g/L, and the granularity D 90 Adding deionized water with the weight of 8 times of that of the coating material into the coating material at the size of 1 micron, uniformly stirring, adding the prepared active ingredient precursor solution, and uniformly stirring;
step c. Application of coating slurry to support
The carrier is cordierite, the pore density is 300 meshes, the porosity is 30%, and the median pore diameter is 30 microns; immersing the carrier in the coating slurry, and exhausting air in the channels to ensure that the coating slurry is fully and uniformly distributed on the surfaces of the channel walls and in the pores of the honeycomb carrier, taking out the carrier, and blowing out the redundant coating slurry from the carrier by using an air gun;
step d. Calcination of the catalyst
And (3) placing the coated catalyst into a muffle furnace, heating to 500 ℃, preserving heat for 0.5h, and naturally cooling to room temperature.
Example 5
The preparation method of the marine diesel engine high-sulfur tail gas particle trapping catalyst comprises the following steps:
step a. Preparation of precursor solution of active ingredient
Pt usage is 50g/ft 3 Pd content of 2.5g/ft 3 According to calculationWeighing Pt-containing solution and Pd-containing solution, adding hydroxyethyl cellulose which is 4 times of the sum of the weight of Pt element and the weight of Pd element into the Pt-containing solution and Pd-containing solution, adding deionized water which is 4 times of the weight of the hydroxyethyl cellulose into the mixture, and uniformly stirring the mixture;
step b preparation of coating slurry containing active ingredient
The coating material is a mixture of silicon dioxide and aluminum oxide containing 1wt% of lanthanum, the dosage of the mixture is 20g/L and 30g/L respectively, and the granularity D 90 Adding deionized water which is 3 times of the coating material in weight of the coating material into the coating material at 0.5 micrometers, uniformly stirring, adding the prepared active ingredient precursor solution, and uniformly stirring;
step c. Application of coating slurry to support
The carrier is made of silicon carbide, the pore density is 200 meshes, the porosity is 70%, and the median pore diameter is 7 microns; introducing coating slurry into one end of the carrier by using compressed air as power and fully and uniformly distributing the coating slurry in the pore canal walls and pores of the carrier;
step d. Calcination of the catalyst
And (3) placing the coated catalyst into a kiln, heating to 500 ℃, preserving heat for 1h, and naturally cooling to room temperature.
Example 6
The preparation method of the marine diesel engine high-sulfur tail gas particle trapping catalyst comprises the following steps:
step a. Preparation of precursor solution of active ingredient
Pt usage is 15g/ft 3 Pd content is 15g/ft 3 Weighing Pt-containing solution and Pd-containing solution according to calculated amounts, adding hydroxyethyl cellulose 10 times of the sum of the weight of Pt element and Pd element into the Pt-containing solution, adding deionized water 1 time of the weight of the hydroxyethyl cellulose, and uniformly stirring;
step b preparation of coating slurry containing active ingredient
The coating material is silicon dioxide containing 5wt% of neodymium, the dosage is 5g/L, and the granularity D 90 Adding deionized water 10 times the weight of the coating material into the coating material at 10 micrometers, uniformly stirring, adding the prepared active ingredient precursor solution, and uniformly stirring;
step c. Application of coating slurry to support
The carrier is mullite, the pore density is 300 meshes, the porosity is 45%, and the median pore diameter is 40 microns; immersing the carrier in the coating slurry, and exhausting air in the channels to ensure that the coating slurry is fully and uniformly distributed on the surfaces of the channel walls and in the pores of the honeycomb carrier, taking out the carrier, and blowing out the redundant coating slurry from the carrier by using an air gun;
step d. Calcination of the catalyst
And (3) placing the coated catalyst into a muffle furnace, heating to 500 ℃, preserving heat for 2 hours, and naturally cooling to room temperature.
Comparative example 1
A preparation method of a marine diesel engine high sulfur tail gas particle trapping catalyst changes the coating material in the step b of the embodiment 1 into titanium dioxide and ammonium tungstate, wherein the dosage of the titanium dioxide and the ammonium tungstate is 16g/L and 4g/L respectively, and the granularity D is the same as that of the titanium dioxide and the ammonium tungstate 90 8 microns, the remainder being the same as in example 1.
Comparative example 2
A preparation method of a marine diesel engine high sulfur tail gas particle trapping catalyst changes a carrier in the step c of the example 1 into a cordierite material, wherein the pore density is 100 meshes, the porosity is 30%, the median pore diameter is 30 micrometers, and the rest is the same as the example 1.
Comparative example 3
The preparation method of the marine diesel engine high sulfur tail gas particle trapping catalyst changes the active ingredients Pt and Pd in the step a of the comparative example 1 into ammonium metavanadate, the dosage of the ammonium metavanadate is 2.8% of the weight of the coating material, the ammonium metavanadate is weighed according to the calculated amount, ethanolamine with the same weight as the ammonium metavanadate is added, deionized water with the weight 5 times of that of the ammonium metavanadate is added, and the mixture is stirred uniformly, and the rest is the same as the comparative example 1. Performance comparison:
(1) CDPF catalysts having different coating materials and different amounts of active ingredients were prepared in examples 1-3 and comparative examples 1-3 of this application, the catalyst size was 150 x 300mm (volume 6.75L), continuous high sulfur carbon deposition-regeneration experiments were performed on diesel engines (national IV emission standard, displacement 4.2L) after encapsulation, and the trend of the carbon deposition amount of the catalysts prepared in examples 1-3 and comparative examples 1-3 as a function of the increase of the number of high sulfur carbon deposition-regeneration cycles was examined, and the results are shown in fig. 1. The experimental conditions for the high sulfur carbon deposition-regeneration experiments are as follows:
the carbon deposition temperature is 200 ℃, heavy high-sulfur diesel oil (the content is 2.0 wt%) is used, the carbon deposition is carried out to 8g/L, then the regeneration is carried out, the regeneration temperature is 400 ℃, and the airspeed is 30000h -1 Repeated for a number of cycles, the following properties were tested:
a. ash content; by weighing the mass difference of the CDPF catalyst before and after regeneration;
CO and HC light-off: determining the content of CO and HC before and after the catalyst by Fourier transform infrared spectrum detection;
c. equilibrium point temperature: determining by measuring the pressure difference value before and after the catalyst;
pm trapping efficiency: and under the carbon deposition working condition, the PM mass of the particulate matters before and after the catalyst is detected by the particulate collection device to determine.
(2) The catalysts prepared in examples 1-3 and comparative examples 1-3 were subjected to CO and HC light-off temperatures T 50 And the equilibrium point temperature and the PM trapping efficiency were compared, and the comparison results are shown in tables 1 to 2.
TABLE 1 CO and HC light-off temperatures T for examples 1-3 and comparative example 1 50
Note that: in Table 1 "-indicates that the conversion rate is less than 50% and T is not measured 50 。
TABLE 2 equilibrium point temperatures and PM collection efficiencies for examples 1-3 and comparative examples 1-3
The kind and amount of the coating material of comparative example 1 are different from those of example 1; the number of carrier particles in comparative example 2 was different from that in example 1; comparative example 3 is a non-noble metal system, without Pt/Pd. As can be seen from the results in Table 1, the fresh catalyst prepared in examples 1-3 catalyzes the T of CO/HC 50 All are obviously lower than those of comparative examples 1-3, and the temperature difference is more than 20 ℃; warp yarnT of CO/HC for examples 1-3 after 20 high sulfur carbon deposition-regeneration cycles 50 The rise is small, between 5 and 12 ℃ lower than the T of comparative examples 1 and 2 50 The rise amplitude is 15-25 ℃, the oxidation capability of comparative example 3 is obviously weaker, T 50 (CO) was significantly higher than in the other examples and comparative examples, with a highest conversion of HC of less than 50%, indicating that the catalysts of examples 1-3 have greater oxidation and sulfur resistance than comparative example 1.
The results in Table 2 show that the temperature of the fresh state equilibrium point of the catalyst in examples 1-3 is between 285 and 300 ℃, the temperature only slightly rises by 5 to 6 ℃ after 20 times of high-sulfur carbon deposition-regeneration cycles, and the temperature of the fresh state equilibrium point of the catalyst in comparative examples 1-3 and the temperature of the equilibrium point after 20 times of cycles are respectively between 325 to 350 ℃ and 335 to 362 ℃, so that the advantages of the catalyst provided by the invention in terms of regeneration capacity and sulfur resistance are reflected. In addition, the catalyst PM trapping efficiency of examples 1-3 was also higher than that of comparative examples 1, 3, which was significantly higher than that of comparative example 2.
As can be seen from FIG. 1, the catalyst of examples 1-3 and comparative examples 1-3 had an increasing carbon deposition amount with increasing number of high sulfur carbon deposition-regeneration cycles, but the catalyst of comparative examples 1-3 had a significantly higher carbon deposition amount than that of the catalyst of examples 1-3, which indicated that the catalyst of examples 1-3 had better sulfur resistance, and had a stronger oxidation ability and a faster regeneration rate.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limited thereto; those skilled in the art may still make non-creative modifications to the technical solutions of the foregoing embodiments or equivalent substitutions of some of the technical features thereof; such modifications and substitutions do not depart from the scope of the technical proposal of the invention.
Claims (2)
1. The application of the marine diesel engine high sulfur tail gas particle trapping catalyst in treating marine diesel engine high sulfur tail gas is characterized in that the carrier adopts a wall flow type honeycomb carrier, a coating is coated on part of or all of the length of the carrier in the axial direction, and the coating contains active ingredients;
the wall flow type honeycomb carrier is provided with parallel pore channels, adjacent pore channels on the end surfaces of two sides of the wall flow type honeycomb carrier are of alternating opening and closing structures, and pore channel walls between the adjacent pore channels are microcosmic porous matrixes;
the carrier is made of cordierite, the pore density is 200 meshes, the porosity is 40%, and the median pore diameter is 20 microns;
the coating material is a mixture of alumina and magnesia containing 25-wt% cerium, and has a particle size D of 5-50g/L 90 0.5-10 microns, wherein the weight of cerium element accounts for 25% of the weight of the coating material;
the active ingredients in the coating are platinum and palladium, wherein the platinum is used in an amount of 1-50g/ft 3 The palladium content is 1-30g/ft 3 The dosage ratio of Pt to Pd is 40:1-1:10;
the preparation method of the marine diesel engine high-sulfur tail gas particle trapping catalyst comprises the following steps:
a. preparing an active ingredient precursor solution:
mixing the weighed active ingredients with hydroxyethyl cellulose with the weight being 3-10 times of that of the active ingredients, adding deionized water with the weight being 1-5 times of that of the hydroxyethyl cellulose into the mixture, and uniformly stirring;
b. preparing coating slurry containing active ingredients:
adding deionized water which is 3-10 times of the coating material in weight, uniformly stirring, adding the prepared active ingredient precursor solution, and uniformly stirring;
c. coating of the coating slurry on the support:
introducing a coating slurry containing an active ingredient into the pore channels of the catalyst carrier in the form of a suspension, wherein the coating slurry is introduced from a single end face or is introduced from two end faces for a plurality of times;
d. roasting of the catalyst:
and (3) placing the coated catalyst into a muffle furnace or a kiln, heating to 500 ℃, preserving heat by 0.5-2h, and naturally cooling to room temperature to obtain a catalyst finished product.
2. The use of the marine diesel high sulfur exhaust particulate trap catalyst of claim 1 for treating marine diesel high sulfur exhaust, wherein in step c, the coating slurry is introduced into the channels of the catalyst support by one of the following means:
(1) Immersing the carrier in the coating slurry, and exhausting air in the channels to ensure that the coating slurry is fully and uniformly distributed on the surfaces of the channel walls and in the pores of the honeycomb carrier;
(2) The compressed air is used as power to guide the coating slurry to be fully and uniformly distributed on the surfaces of the pore canal walls and in the pores of the carrier;
(3) The coating slurry is guided to be sufficiently uniformly distributed on the surfaces of the pore canal walls and in the pores of the carrier by means of negative pressure suction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110465009.XA CN113181910B (en) | 2021-04-28 | 2021-04-28 | Marine diesel engine high-sulfur tail gas particle trapping catalyst and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110465009.XA CN113181910B (en) | 2021-04-28 | 2021-04-28 | Marine diesel engine high-sulfur tail gas particle trapping catalyst and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113181910A CN113181910A (en) | 2021-07-30 |
| CN113181910B true CN113181910B (en) | 2024-03-15 |
Family
ID=76979702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110465009.XA Active CN113181910B (en) | 2021-04-28 | 2021-04-28 | Marine diesel engine high-sulfur tail gas particle trapping catalyst and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113181910B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115680828A (en) * | 2022-11-08 | 2023-02-03 | 昆明贵研催化剂有限责任公司 | Catalytic diesel particulate filter for efficiently trapping particulate matters and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002153733A (en) * | 2000-09-08 | 2002-05-28 | Nissan Motor Co Ltd | Exhaust gas cleaning system and exhaust emission control method |
| KR20070019566A (en) * | 2005-08-11 | 2007-02-15 | 도다 고교 가부시끼가이샤 | A Catalyst for Decomposing Hydrocarbons, a Method for Decomposing Hydrocarbons using the Same and a Method for Preparing Hydrogen, and an Electric Generating System |
| CN103433028A (en) * | 2013-08-16 | 2013-12-11 | 南京工业大学 | Three-effect NOx, CO and HC removing catalyst for ship engine and preparation method thereof |
| CN105251485A (en) * | 2015-11-04 | 2016-01-20 | 浙江达峰汽车技术有限公司 | Motor vehicle exhaust purification catalyst and production process thereof |
| CN105944718A (en) * | 2016-05-06 | 2016-09-21 | 浙江大学 | Integral DOC catalyst for marine diesel engine tail gas purification and preparation process thereof |
| CN109395757A (en) * | 2018-11-12 | 2019-03-01 | 无锡威孚环保催化剂有限公司 | A kind of catalyst and preparation method thereof reducing dpf regeneration temperature |
| CN112517003A (en) * | 2020-12-03 | 2021-03-19 | 无锡威孚环保催化剂有限公司 | Catalyst for gasoline vehicle particle catcher and preparation method thereof |
-
2021
- 2021-04-28 CN CN202110465009.XA patent/CN113181910B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002153733A (en) * | 2000-09-08 | 2002-05-28 | Nissan Motor Co Ltd | Exhaust gas cleaning system and exhaust emission control method |
| KR20070019566A (en) * | 2005-08-11 | 2007-02-15 | 도다 고교 가부시끼가이샤 | A Catalyst for Decomposing Hydrocarbons, a Method for Decomposing Hydrocarbons using the Same and a Method for Preparing Hydrogen, and an Electric Generating System |
| CN103433028A (en) * | 2013-08-16 | 2013-12-11 | 南京工业大学 | Three-effect NOx, CO and HC removing catalyst for ship engine and preparation method thereof |
| CN105251485A (en) * | 2015-11-04 | 2016-01-20 | 浙江达峰汽车技术有限公司 | Motor vehicle exhaust purification catalyst and production process thereof |
| CN105944718A (en) * | 2016-05-06 | 2016-09-21 | 浙江大学 | Integral DOC catalyst for marine diesel engine tail gas purification and preparation process thereof |
| CN109395757A (en) * | 2018-11-12 | 2019-03-01 | 无锡威孚环保催化剂有限公司 | A kind of catalyst and preparation method thereof reducing dpf regeneration temperature |
| CN112517003A (en) * | 2020-12-03 | 2021-03-19 | 无锡威孚环保催化剂有限公司 | Catalyst for gasoline vehicle particle catcher and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113181910A (en) | 2021-07-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2382031B2 (en) | Emissions treatment systems and methods with catalyzed scr filter and downstream scr catalyst | |
| US7797931B2 (en) | Catalyst composition for diesel particulate filter | |
| US8057768B2 (en) | Device for the purification of diesel exhaust gases | |
| KR101651950B1 (en) | Dual function catalytic filter | |
| KR102072505B1 (en) | Filter for filtering particulate matter from exhaust gas emitted from a compression ignition engine | |
| JP2736099B2 (en) | Diesel engine exhaust gas purification catalyst | |
| CN109529924B (en) | DOC molecular sieve catalyst, preparation thereof and application of DOC molecular sieve catalyst in catalytic oxidation of diesel vehicle tail gas | |
| WO2011162030A1 (en) | Exhaust gas catalytic purging unit using selective reduction catalyst, exhaust gas purging method, and diesel automobile equipped with exhaust gas catalytic purging unit | |
| US20080141660A1 (en) | Catalyst And System For Reducing Exhaust Of Diesel Engines | |
| KR20150140727A (en) | Filter substrate comprising three-way catalyst | |
| JP7065071B2 (en) | Exhaust gas purification filter and its manufacturing method | |
| EP1328343A1 (en) | Catalytic soot filter and use thereof in treatment of lean exhaust gases | |
| MX2014006516A (en) | Diesel oxidation catalysts, systems and methods of treatment. | |
| CN113181910B (en) | Marine diesel engine high-sulfur tail gas particle trapping catalyst and preparation method thereof | |
| JPH0884911A (en) | Catalyst for decomposing nitrogen oxide and method for purifying diesel engine exhaust using the same | |
| US9126182B2 (en) | Catalyzed soot filters, systems and methods of treatment | |
| KR102193496B1 (en) | Diesel oxidation catalyst with excellent heat durability and Method thereof | |
| CN114653396B (en) | DPF catalyst coating method capable of achieving low exhaust back pressure and high catalytic efficiency | |
| KR100389126B1 (en) | Preparation Method of Catalyst Composition for the Removal of Particulate Materials in the Exhaust of Diesel Vehicles | |
| Pfeifer et al. | New platinum/palladium based catalyzed filter technologies for future passenger car applications | |
| JP5875562B2 (en) | Exhaust gas treatment apparatus and exhaust gas treatment method | |
| CA3140218A1 (en) | Catalyzed particulate filter for soot removal from engine exhaust | |
| KR100405470B1 (en) | A composition of diesel oxidation catalyst | |
| CN111715222A (en) | Preparation method of oxidation type DOC catalyst for purifying tail gas of diesel engine | |
| CN115487824B (en) | Tail gas purifying device of mining explosion-proof diesel engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |