WO2005052327A1 - 粒状物質含有排ガス浄化用フィルタ、該排ガスの浄化方法および装置 - Google Patents
粒状物質含有排ガス浄化用フィルタ、該排ガスの浄化方法および装置 Download PDFInfo
- Publication number
- WO2005052327A1 WO2005052327A1 PCT/JP2004/017395 JP2004017395W WO2005052327A1 WO 2005052327 A1 WO2005052327 A1 WO 2005052327A1 JP 2004017395 W JP2004017395 W JP 2004017395W WO 2005052327 A1 WO2005052327 A1 WO 2005052327A1
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- Prior art keywords
- exhaust gas
- porous
- corrugated
- corrugated sheet
- flat plate
- Prior art date
Links
- 239000013618 particulate matter Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000007789 gas Substances 0.000 claims abstract description 135
- 239000003054 catalyst Substances 0.000 claims abstract description 69
- 230000000903 blocking effect Effects 0.000 claims abstract description 13
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000003647 oxidation Effects 0.000 claims description 38
- 238000007254 oxidation reaction Methods 0.000 claims description 38
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 24
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 12
- 238000000746 purification Methods 0.000 claims description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- 229910052697 platinum Inorganic materials 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 3
- 239000011236 particulate material Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 9
- 230000001590 oxidative effect Effects 0.000 abstract description 4
- 238000011001 backwashing Methods 0.000 abstract description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000010030 laminating Methods 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 65
- 229910052757 nitrogen Inorganic materials 0.000 description 33
- 239000004071 soot Substances 0.000 description 19
- 239000002002 slurry Substances 0.000 description 15
- 239000000919 ceramic Substances 0.000 description 11
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 9
- 239000003566 sealing material Substances 0.000 description 7
- IXSUHTFXKKBBJP-UHFFFAOYSA-L azanide;platinum(2+);dinitrite Chemical compound [NH2-].[NH2-].[Pt+2].[O-]N=O.[O-]N=O IXSUHTFXKKBBJP-UHFFFAOYSA-L 0.000 description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 description 5
- 239000001569 carbon dioxide Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000295 fuel oil Substances 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 3
- 239000008119 colloidal silica Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 239000002759 woven fabric Substances 0.000 description 3
- 229910002089 NOx Inorganic materials 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 210000002421 cell wall Anatomy 0.000 description 2
- 229910052878 cordierite Inorganic materials 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 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 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000012784 inorganic fiber Substances 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- 229910001111 Fine metal Inorganic materials 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000010763 heavy fuel oil Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 150000002829 nitrogen Chemical class 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- -1 zircona Inorganic materials 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/0231—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using special exhaust apparatus upstream of the filter for producing nitrogen dioxide, e.g. for continuous filter regeneration systems [CRT]
-
- 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
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
-
- 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
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
- B01D53/9431—Processes characterised by a specific device
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
- F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/30—Honeycomb supports characterised by their structural details
- F01N2330/42—Honeycomb supports characterised by their structural details made of three or more different sheets, foils or plates stacked one on the other
Definitions
- the present invention relates to a filter for purifying exhaust gas containing particulate matter, a method and an apparatus for purifying the exhaust gas.
- the present invention provides a device that can remove particulate matter (PM) contained in gas discharged from a diesel engine with low ventilation loss and high efficiency, and has a large load when ash or soot is deposited.
- the present invention relates to a PM-containing exhaust gas purification filter capable of removing deposits without using the same, and an exhaust gas purification method and apparatus using the same.
- Diesel engines are one of the most efficient of the internal combustion engines and emit low amounts of carbon dioxide (CO) per fixed output and use low-quality fuels such as heavy oil.
- CO carbon dioxide
- Type power generation facilities are being reviewed and tend to be heavily used.
- Non-Patent Document 1 Study on DP filter (DPF) devised to stop * Inventions have been made (for example, Non-Patent Document 1).
- Patent Documents 1 and 2 Non-Patent Document 1: Industrial Environmental Management Association, Environmental Management Vol.37, p441-449
- Patent Document 1 JP-A-1-318715
- Patent Document 2 JP-A-60-235620
- Non-Patent Document 2 Preprints of the Automotive Engineering Society Academic Lecture No. 22-2
- An object of the present invention is to solve the above-mentioned problems of the prior art, is resistant to clogging and ash clogging, does not require special means such as backwashing and heating and burning soot, and is made of an inexpensive material.
- An object of the present invention is to provide a particulate matter removal filter, and an exhaust gas purification method and apparatus using the same.
- the purifying device according to (6) further comprising a structure capable of switching between passing and blocking of the exhaust gas.
- One of the side surfaces orthogonal to the plate ridge line or two surfaces which are orthogonal to each other and are adjacent to each other are sealed, and the exhaust gas flows into the porous corrugated plate through the porous flat plate.
- a particulate corrugated material comprising: a porous corrugated sheet supporting an oxidation catalyst, forming a flow path of the exhaust gas; and a porous flat plate in contact with the porous corrugated sheet, wherein one surface of the porous corrugated sheet does not support the oxidation catalyst.
- Exhaust gas purification filter Exhaust gas purification filter.
- a purification method for exhaust gas containing particulate matter comprising: the filter according to (8); a means for flowing exhaust gas into the exhaust gas inflow path of the filter; and a means for blocking the passage of exhausted gas. apparatus.
- a DPF with a catalyst having a high performance and a low pressure loss can be used without using a conventional expensive ceramic sintered filter. Can be realized. Even if the carrying amount of an expensive oxidation catalyst such as Pt is drastically reduced, PM can be efficiently burned and removed, so that a significant cost reduction can be achieved. Also, by devising the flow direction of exhaust gas into the exhaust gas purifying filter of the present invention and the sealing structure of the filter, it is possible to realize an exhaust gas purifying apparatus capable of effectively preventing the filter from being blocked by dust and the like. it can.
- FIG. 1 is an explanatory view of an exhaust gas purifying filter showing one embodiment of the present invention.
- FIG. 2 is an explanatory diagram of a basic unit consisting of a porous corrugated sheet and a porous flat plate force.
- FIG. 3 is an explanatory diagram of a DPF block used in the present invention.
- FIG. 4 is an explanatory view of a flow direction and an outflow direction of exhaust gas in the present invention.
- FIG. 5 is an explanatory view of the deposition of particulate matter in the DPF of the present invention.
- FIG. 6 is an explanatory view of deposition of particulate matter in a conventional DPF.
- FIG. 7 is an explanatory view of an exhaust gas purifying filter showing another embodiment of the present invention.
- FIG. 8 is an explanatory view of a reactor incorporating the DPF of the present invention.
- FIG. 9 is an explanatory view of a reactor incorporating a DPF used in Examples.
- the filter for purifying PM-containing exhaust gas of the present invention is an acid for oxidizing NO in exhaust gas to NO.
- a pair of a porous corrugated sheet carrying an exhaust gas purifying catalyst such as an activated catalyst and a porous flat plate is used as a basic unit, and a formed body is laminated such that the corrugated edges of the porous corrugated sheet are alternately orthogonal to each other. Then, one of the side surfaces orthogonal to the corrugated ridge line of the molded body, or two surfaces which are orthogonal to each other and are adjacent to each other, are sealed.
- FIG. 1 is an explanatory view of a particulate matter removing filter (DPF) showing one embodiment of the present invention
- FIG. 2 is an explanatory view of a basic unit composed of a porous corrugated sheet and a porous flat plate used in the present invention
- FIG. 3 is an explanatory view of a molded body obtained by laminating the basic units.
- DPF particulate matter removing filter
- the DPF includes a block-shaped molded body (hereinafter, referred to as a DPF block) 3 and a seal material 4.
- the basic unit force which is the opposing force of the porous corrugated sheet 1 and the porous flat plate 2, as shown in FIG. 3, the corrugated ridges of the porous corrugated sheet 1 intersect alternately.
- the sealing material 4 is provided on one of the side surfaces of the block 3 in a direction orthogonal to the ridge line of the porous corrugated plate 1 constituting the DPF block 3. In this way, an inflow path a of the exhaust gas (gas to be treated) and an outflow path b of the exhaust gas (purifying gas) are respectively formed between the porous flat plate 2 and the porous corrugated sheet 1 (FIG. 4). ).
- the porous corrugated sheet 1 and the porous plate 2 are made of a non-woven fabric or woven fabric using silica-alumina-based ceramic fiber, a metal fiber woven fabric, a porous sintered body of ceramics such as cordierite, or the like. Is used. Of these, obtain lightweight DPF with excellent porosity From the point of view, it is particularly preferable to use a ceramic nonwoven fabric (sheet) having a thickness of 0.5 to 0.1 mm.
- the shape of the corrugated sheet of the porous porous sheet 1 is not particularly limited, but in the case of the above-mentioned sheet thickness, it is preferable that the wave pitch is 2 to 10 mm and the height is 15 to 15 mm. .
- the basic shape composed of the porous corrugated plate 1 and the porous flat plate 2 may be simply laminated, but is preferably bonded to each other by an inorganic binder!
- the sealing material if the exhaust gas flowing from the corrugated ridge direction of the porous corrugated sheet 1 can be prevented from passing on the surface opposite to the surface into which the exhaust gas flows.
- a method of plugging a dense inorganic solidified material in the flow path of the surface to be sealed, a method of pressing an inorganic fiber mat-like sealing material, a method of closing a lid with a metal plate For example, a method such as a method for carrying out the method can be adopted.
- high strength can be obtained by covering the periphery with an inorganic fiber mat that has high viscosity and high binding properties such as ceramic adhesive, and at the same time integrally lays the mat and the carrier cell wall.
- oxidation catalyst component for example, a known catalyst in which a normal noble metal such as platinum (Pt) is supported on a high surface area support such as titanium, alumina, zircona, and silica is used.
- a normal noble metal such as platinum (Pt)
- a high surface area support such as titanium, alumina, zircona, and silica
- titania which has excellent acid resistance, is particularly preferred.
- the gas to be treated is supplied from the direction of the ridgeline of the corrugated plate formed by the porous corrugated plate 1 and the porous plate 2 of the DPF block 3. . That is, as shown in FIG. 4, the DPF has a flow path a in the A direction formed by the porous corrugated sheet 1 and the porous flat plate 2 and a flow path b in the B direction orthogonal thereto. However, the gas to be treated flowing from the A direction can flow only into the flow path a (the exhaust gas inflow path).
- the gas that has flowed into the flow channel a passes through the pores in the porous flat plate 2 because the outlet of the flow channel a is sealed with the sealing material 4 and is adjacent to the porous flat plate 2.
- the exhaust gas passes through the porous flat plate 2, the exhaust gas is filtered off by PM force contained in the gas and deposited on the surface of the porous flat plate 2.
- FIG. 5 shows a state explanatory diagram at this time. In the figure, 5 is the deposited PM (particulate matter).
- porous corrugated sheet Is oxidized to CO and removed. Therefore, porous corrugated sheet
- the gas from which the soot has been filtered is moved to the flow path b and discharged there. Also in the flow path b, there are a porous corrugated sheet 1 and a porous flat plate 2 carrying an oxidation catalyst for NO. Therefore, it is oxidized by NO power SNO in the gas. Therefore, a denitration catalyst for urea and NH reduction is located downstream of flow path b.
- the following high-speed denitration reaction proceeds preferentially according to the following equation (2), and NOx in the exhaust gas is removed with high efficiency at low temperature, so that the denitration performance can be improved.
- the oxidation catalyst for oxidizing NO in exhaust gas to NO forms a molded body.
- the oxidation catalyst is carried only in the flow path a constituting the exhaust gas inflow path, and the oxidation catalyst is not carried in the flow path b constituting the exhaust gas discharge path.
- the oxidation of NO to NO in the flow path b is suppressed, and the NO
- the carrier may be used as it is if the porous corrugated sheet 1 and the porous plate 2 have high rigidity.
- a slurry or sol of an inert oxide such as titer, alumina, or zirconia is applied to both sides of the porous corrugated sheet 1 constituting the flow path b and one side of the porous plate 2 in contact therewith. As a strength improver.
- the characteristic of the carrier shape is utilized and the catalyst component slurry flows in the direction A in FIG.
- the strength improver slurry can be easily removed by pulling it out from the direction shown in FIG. In this case, it is preferable to protect the channel surface, through which the slurry does not flow, by covering it with a seal or the like.
- the above-mentioned components may be supported by staking or coating, and then laminated.
- FIG. 7 is an explanatory diagram of a DPF showing another embodiment of the present invention.
- the difference from FIG. 1 is that the sealing material 4 is provided on two side surfaces that are orthogonal to the corrugated ridge line of the DPF block 3 and that are adjacent to each other.
- the gas to be treated that has flowed into the DPF block 3 can be discharged in one direction, so that the dead space of the reactor incorporating the DPF is reduced, and a compact exhaust gas purifier is used. It can be a device.
- FIG. 8 is an explanatory view showing various installation examples when the DPF of the present invention is incorporated in a reactor.
- (A) shows a reactor incorporating DPF with sealant 4 provided on two sides of DPF block 3.
- FIGS. 3 (B) and 3 (C) are explanatory diagrams of a reactor provided with a knob 10 capable of blocking passage of exhaust gas on a surface opposite to a surface into which exhaust gas flows.
- (B) two surfaces are sealed with a combination of the sealing material 4 and the valve 10
- one surface is sealed with only the valve 10.
- a laminate of a 0.2 mm thick porous corrugated sheet made of non-woven silica alumina fiber and a 0.2 mm thick porous flat sheet (intersecting corrugated honeycomb, corrugated sheet pitch 3.3 mm, 1.9mm, -Chass, 300mm X 300mm X 300mm), 15% TiO2
- Example 2 In the same manner as in Example 1, except that the concentration of dinitrodiammineplatinum was changed from 1.33 gZL to 0.32 gZL, a DPF substrate with an oxidation catalyst was produced in the same manner as in Example 1.
- colloidal silica (silica sol-OS, SiO concentration manufactured by Nissan Chemical Co., Ltd.)
- Example 4 the catalyst slurry prepared for the flow channel a was flowed and mixed with the catalyst slurry prepared for the flow channel a in place of the inert component slurry flown into the flow channel b, and the catalyst was supported on the flow channels a and b.
- a substrate for DPF with an oxidation catalyst was prepared in the same manner as in Example 4 except that the components were supported.
- Comparative Example 1 a DPF with a catalyst was produced in the same manner as in Comparative Example 1, except that the concentration of dinitrodiammineplatinum was reduced to 1Z8 and the amount of supported platinum was set to 0.2 gZL.
- Example 15 The substrate for oxidation-catalyzed DPF obtained in Example 15 was cut into a rectangular parallelepiped having a length of 150 mm, a length of 150 mm, and a width of 117 mm, one surface of which was sealed with a sealing material, and the unsealed surface facing upward (gas (Supply side) and filled in the reaction vessel shown in FIG. That is, the DPF block 3 was fixed to the DPF support metal fitting 9 installed in the reaction vessel 7 with the unsealed surface facing upward.
- the DPF with catalyst obtained in Comparative Examples 1 and 2 was filled in a cylindrical reactor with its surroundings being sieved.
- Example 3 0.1 None None Slight 140 None 90 or more 40
- Example 4 0.1 None Slight 150 None 90 or more 30
- Example 5 0.2 None Slight 140 None 90 or more 80 Comparative Example 1! .6 None Slight 160 None 90 Above 220 Comparative Example 2 0.2 None
- the obtained results are shown in Table 1.
- the DPF with an oxidation catalyst of the present invention can burn soot efficiently with an extremely small amount of Pt, and can reduce pressure loss. I understand.
- particulate matter (PM) contained in the exhaust gas of a diesel engine can be removed with low ventilation loss and high efficiency, and a large load is applied when ash or soot is deposited. Since it can be removed without using any equipment, it is possible to provide an inexpensive DPF useful for preventing environmental pollution, which has great social and economic effects.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Biomedical Technology (AREA)
- Health & Medical Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Catalysts (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04819360A EP1707774B1 (en) | 2003-11-25 | 2004-11-24 | Particulate matter-containing exhaust emission controlling filter, exhaust emission controlling method and device |
US10/580,506 US7655064B2 (en) | 2003-11-25 | 2004-11-24 | Particulate matter-containing exhaust emission controlling filter, exhaust emission controlling method and device |
CN2004800393306A CN1902384B (zh) | 2003-11-25 | 2004-11-24 | 含颗粒物质的废气排放控制过滤器,废气排放控制方法及其装置 |
KR1020067012221A KR101143736B1 (ko) | 2003-11-25 | 2004-11-24 | 입상물질 함유 배기 가스 정화용 필터, 그 배기 가스의정화 방법 및 장치 |
DE602004024717T DE602004024717D1 (de) | 2003-11-25 | 2004-11-24 | Partikelförmige stoffe enthaltender abgasentgiftungsfilter, abgasentgiftungsverfahren und -vorrichtung |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003393879 | 2003-11-25 | ||
JP2003-393879 | 2003-11-25 | ||
JP2004-099149 | 2004-03-30 | ||
JP2004099149A JP4758071B2 (ja) | 2003-11-25 | 2004-03-30 | Pm含有排ガス浄化用フィルタ、該排ガスの浄化方法および浄化装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005052327A1 true WO2005052327A1 (ja) | 2005-06-09 |
Family
ID=34635596
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/017395 WO2005052327A1 (ja) | 2003-11-25 | 2004-11-24 | 粒状物質含有排ガス浄化用フィルタ、該排ガスの浄化方法および装置 |
Country Status (7)
Country | Link |
---|---|
US (1) | US7655064B2 (ja) |
EP (1) | EP1707774B1 (ja) |
JP (1) | JP4758071B2 (ja) |
KR (1) | KR101143736B1 (ja) |
DE (1) | DE602004024717D1 (ja) |
TW (1) | TW200521314A (ja) |
WO (1) | WO2005052327A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105381650A (zh) * | 2007-06-26 | 2016-03-09 | 唐纳森公司 | 过滤介质包,过滤元件和方法 |
US10188243B2 (en) | 2010-11-03 | 2019-01-29 | Solaris Paper, Inc. | Adapter for recessed paper product dispensers |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10343046A1 (de) * | 2003-09-16 | 2005-05-12 | Deutsch Zentr Luft & Raumfahrt | Partikelfilter für einen Verbrennungsmotor |
JP2006043557A (ja) * | 2004-08-03 | 2006-02-16 | Babcock Hitachi Kk | 粒状物質除去フィルタおよびその構造体 |
DE102004063546A1 (de) * | 2004-12-30 | 2006-07-13 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Wabenkörper mit zumindest teilweise keramischer Wabenstruktur und Aufnahme für Messfühler |
JP2006192361A (ja) * | 2005-01-13 | 2006-07-27 | Babcock Hitachi Kk | 粒子状物質除去フィルタ |
JP4773800B2 (ja) * | 2005-11-09 | 2011-09-14 | バブコック日立株式会社 | 排ガス中の粒状物質の除去装置 |
JP4710741B2 (ja) * | 2006-07-10 | 2011-06-29 | 三菱電機株式会社 | 換気装置 |
US8007731B2 (en) * | 2007-08-10 | 2011-08-30 | Corning Incorporated | Fluid treatment device having a multiple ceramic honeycomb layered structure |
DE102007058141A1 (de) * | 2007-09-10 | 2009-03-19 | Heinrich Gillet Gmbh | Filteranordnung mit einem Kreuzkanalfilter |
DE202007015860U1 (de) * | 2007-09-10 | 2009-02-12 | Heinrich Gillet Gmbh | Kreuzkanalfilter und Gehäuseanordnung für einen Kreuzkanalfilter |
WO2009080084A1 (en) * | 2007-12-21 | 2009-07-02 | Volvo Technology Corporation | Particulate filtration device |
US20100300082A1 (en) * | 2009-05-26 | 2010-12-02 | Xiaogang Zhang | Diesel particulate filter |
US20150096558A1 (en) * | 2012-04-23 | 2015-04-09 | David W. Mazyck | Helmet air purification system |
EP3368216A1 (en) * | 2015-10-28 | 2018-09-05 | Umicore AG & Co. KG | Honeycomb catalyst for removal of nitrogen oxides in flue and exhaust gasses and method of preparation thereof |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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WO1989003720A1 (en) | 1987-10-23 | 1989-05-05 | Massachusetts Institute Of Technology | Methods and devices for gas cleaning |
JPH11294138A (ja) * | 1998-04-15 | 1999-10-26 | Sumitomo Electric Ind Ltd | ディーゼルエンジンの排気浄化装置及び同装置用流路切替バルブ |
JP2001149451A (ja) * | 1999-11-30 | 2001-06-05 | Mitsubishi Paper Mills Ltd | 光触媒部材 |
JP2001276573A (ja) * | 2000-03-31 | 2001-10-09 | Nissan Diesel Motor Co Ltd | 排気ガス浄化触媒装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4290263A (en) * | 1979-12-12 | 1981-09-22 | General Motors Corporation | Diesel engine exhaust trap particulate distribution and incineration balancing system |
US4343631A (en) * | 1981-01-30 | 1982-08-10 | Westinghouse Electric Corp. | Hot gas particulate removal |
EP0308525B1 (en) * | 1987-09-22 | 1993-12-08 | Asahi Glass Company Ltd. | Apparatus treating particulates in an exhaust gas from a diesel engine |
JP3899534B2 (ja) * | 1995-08-14 | 2007-03-28 | トヨタ自動車株式会社 | ディーゼル機関の排気浄化方法 |
DE19540045A1 (de) * | 1995-10-27 | 1997-04-30 | Abb Research Ltd | Filterelement |
US20020172633A1 (en) * | 2001-03-06 | 2002-11-21 | Koermer Gerald S. | Vehicular atmosphere cleansing system |
-
2004
- 2004-03-30 JP JP2004099149A patent/JP4758071B2/ja not_active Expired - Fee Related
- 2004-11-24 KR KR1020067012221A patent/KR101143736B1/ko not_active IP Right Cessation
- 2004-11-24 EP EP04819360A patent/EP1707774B1/en not_active Not-in-force
- 2004-11-24 DE DE602004024717T patent/DE602004024717D1/de active Active
- 2004-11-24 US US10/580,506 patent/US7655064B2/en not_active Expired - Fee Related
- 2004-11-24 WO PCT/JP2004/017395 patent/WO2005052327A1/ja active Application Filing
- 2004-11-25 TW TW093136303A patent/TW200521314A/zh not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1989003720A1 (en) | 1987-10-23 | 1989-05-05 | Massachusetts Institute Of Technology | Methods and devices for gas cleaning |
JPH11294138A (ja) * | 1998-04-15 | 1999-10-26 | Sumitomo Electric Ind Ltd | ディーゼルエンジンの排気浄化装置及び同装置用流路切替バルブ |
JP2001149451A (ja) * | 1999-11-30 | 2001-06-05 | Mitsubishi Paper Mills Ltd | 光触媒部材 |
JP2001276573A (ja) * | 2000-03-31 | 2001-10-09 | Nissan Diesel Motor Co Ltd | 排気ガス浄化触媒装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1707774A4 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105381650A (zh) * | 2007-06-26 | 2016-03-09 | 唐纳森公司 | 过滤介质包,过滤元件和方法 |
US10188243B2 (en) | 2010-11-03 | 2019-01-29 | Solaris Paper, Inc. | Adapter for recessed paper product dispensers |
Also Published As
Publication number | Publication date |
---|---|
JP4758071B2 (ja) | 2011-08-24 |
EP1707774A4 (en) | 2008-01-23 |
US20070128089A1 (en) | 2007-06-07 |
KR101143736B1 (ko) | 2012-05-10 |
US7655064B2 (en) | 2010-02-02 |
TWI332543B (ja) | 2010-11-01 |
DE602004024717D1 (de) | 2010-01-28 |
TW200521314A (en) | 2005-07-01 |
EP1707774A1 (en) | 2006-10-04 |
KR20070004552A (ko) | 2007-01-09 |
JP2005177733A (ja) | 2005-07-07 |
EP1707774B1 (en) | 2009-12-16 |
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