WO2013042644A1 - 排ガス浄化装置 - Google Patents
排ガス浄化装置 Download PDFInfo
- Publication number
- WO2013042644A1 WO2013042644A1 PCT/JP2012/073775 JP2012073775W WO2013042644A1 WO 2013042644 A1 WO2013042644 A1 WO 2013042644A1 JP 2012073775 W JP2012073775 W JP 2012073775W WO 2013042644 A1 WO2013042644 A1 WO 2013042644A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ozone
- air
- sensor
- ozone generator
- nitrogen
- Prior art date
Links
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 257
- 239000012530 fluid Substances 0.000 claims abstract description 81
- 239000003054 catalyst Substances 0.000 claims abstract description 57
- 238000002347 injection Methods 0.000 claims abstract description 50
- 239000007924 injection Substances 0.000 claims abstract description 50
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000004202 carbamide Substances 0.000 claims abstract description 44
- 230000003647 oxidation Effects 0.000 claims abstract description 20
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 20
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims description 228
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 183
- 229910052757 nitrogen Inorganic materials 0.000 claims description 90
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 81
- 239000001301 oxygen Substances 0.000 claims description 81
- 229910052760 oxygen Inorganic materials 0.000 claims description 81
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 46
- 239000012528 membrane Substances 0.000 claims description 41
- 238000010926 purge Methods 0.000 claims description 37
- 238000000746 purification Methods 0.000 claims description 19
- 238000006722 reduction reaction Methods 0.000 claims description 18
- 238000010531 catalytic reduction reaction Methods 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 102
- 239000012510 hollow fiber Substances 0.000 description 31
- 229910021536 Zeolite Inorganic materials 0.000 description 17
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 17
- 239000010457 zeolite Substances 0.000 description 17
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 14
- 238000000926 separation method Methods 0.000 description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 10
- 239000000919 ceramic Substances 0.000 description 10
- 239000011248 coating agent Substances 0.000 description 10
- 238000000576 coating method Methods 0.000 description 10
- 239000000843 powder Substances 0.000 description 10
- 229910052697 platinum Inorganic materials 0.000 description 7
- 239000002002 slurry Substances 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- 239000012466 permeate Substances 0.000 description 6
- 239000000446 fuel Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- WTHDKMILWLGDKL-UHFFFAOYSA-N urea;hydrate Chemical compound O.NC(N)=O WTHDKMILWLGDKL-UHFFFAOYSA-N 0.000 description 5
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910001873 dinitrogen Inorganic materials 0.000 description 4
- 229910001882 dioxygen Inorganic materials 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 229910017052 cobalt Inorganic materials 0.000 description 3
- 239000010941 cobalt Substances 0.000 description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229910052878 cordierite Inorganic materials 0.000 description 3
- 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 3
- 238000007599 discharging Methods 0.000 description 3
- 238000005342 ion exchange Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 229910052763 palladium Inorganic materials 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 239000004642 Polyimide Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000002829 nitrogen Chemical class 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
- B01D53/9495—Controlling the catalytic process
-
- 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
- B01D53/22—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 by diffusion
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/02—Hollow fibre modules
- B01D63/031—Two or more types of hollow fibres within one bundle or within one potting or tube-sheet
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/10—Preparation of ozone
-
- 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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
- F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/104—Ozone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2067—Urea
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20738—Iron
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20746—Cobalt
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20761—Copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20792—Zinc
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/50—Zeolites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/12—Oxygen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/10—Single element gases other than halogens
- B01D2257/102—Nitrogen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/80—Water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/02—Hollow fibre modules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/58—Other polymers having nitrogen in the main chain, with or without oxygen or carbon only
- B01D71/62—Polycondensates having nitrogen-containing heterocyclic rings in the main chain
- B01D71/64—Polyimides; Polyamide-imides; Polyester-imides; Polyamide acids or similar polyimide precursors
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2201/00—Preparation of ozone by electrical discharge
- C01B2201/60—Feed streams for electrical dischargers
- C01B2201/62—Air
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2201/00—Preparation of ozone by electrical discharge
- C01B2201/70—Cooling of the discharger; Means for making cooling unnecessary
- C01B2201/74—Cooling of the discharger; Means for making cooling unnecessary by liquid
- C01B2201/76—Water
-
- 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
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/38—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an ozone (O3) generator, e.g. for adding ozone after generation of ozone from air
-
- 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
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
- F01N2560/026—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting NOx
-
- 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
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/06—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a temperature sensor
-
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/06—Adding substances to exhaust gases the substance being in the gaseous form
-
- 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
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
- F01N2900/1402—Exhaust gas composition
-
- 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
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
- F01N2900/1404—Exhaust gas temperature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- the present invention relates to an apparatus for purifying exhaust gas by reducing nitrogen oxide (NOx) contained in the exhaust gas of the engine.
- NOx nitrogen oxide
- exhaust gas discharged from an internal combustion engine flows through an exhaust pipe, a muffler that reduces exhaust noise when exhaust gas is released into the atmosphere is connected to the exhaust pipe, and a purification device that purifies the exhaust gas is provided in the exhaust pipe Ozone is generated by the ozone generation reactor, the ozone generation reactor and the exhaust pipe are connected upstream of the purification device in the direction in which the exhaust gas flows through the ozone supply pipe, and the ozone generated by the ozone generation reactor passes through the ozone supply pipe
- An exhaust gas aftertreatment system that is supplied to the inside of an exhaust pipe via a gas is disclosed (for example, see Patent Document 1).
- the amount of ozone is detected by an ozone sensor, and this ozone sensor is disposed at least one of inside the ozone supply pipe and immediately before the muffler.
- the ozone generation reactor includes a generation unit having a pair of electrodes therein, a power supply unit that applies a high voltage between the electrodes, and an air pump that supplies air to the generation unit.
- the ozone supply pipe is provided with an open / close valve that switches between communication and blocking between the ozone supply pipe and the exhaust pipe. Further, the power supply unit, the air pump, and the on-off valve are electrically connected to an ECU (Engine Control Unit), and these operations are controlled based on an output from the ECU.
- ECU Engine Control Unit
- the ozone supply pipe is not a path through which the exhaust gas flows, and thus may become as hot as the inside of the exhaust pipe. Absent. Therefore, it is possible to use a semiconductor ozone sensor that has low heat resistance but can detect a small amount of ozone as the ozone sensor, and can accurately detect the amount of ozone generated by the ozone generation reactor.
- the ozone sensor is disposed immediately before the muffler, the exhaust gas that has passed through the purification device is usually cooled while flowing through the exhaust pipe, and the temperature at which the semiconductor ozone sensor can be used before reaching the muffler. It becomes. Accordingly, a semiconductor ozone sensor can be used as the ozone sensor, and the amount of ozone remaining unreacted can be accurately detected, so that the amount of ozone can be accurately detected.
- a high voltage electrode is provided on one surface of the dielectric, and a ground electrode is provided in parallel on the other surface of the dielectric via a gap, and these electrodes are housed in an ozone generation container
- An ozone generator that generates ozone in a raw material gas that is applied between a ground electrode and circulated in a gap is disclosed (for example, see Patent Document 2).
- nitrogen in the compressed air is concentrated and removed by the nitrogen enrichment device, and the compressed gas is mixed with the remaining gas after nitrogen is removed by this nitrogen enrichment device. Is introduced into the ozone generating container as a raw material gas.
- the oxygen concentration of the raw material gas guided to the ozone generation container is detected by an oxygen concentration meter, and the concentration of ozone generated in the ozone generation container is detected by the ozone concentration meter.
- the control means is configured to control the oxygen concentration, the gas flow rate, and the input power amount of the raw material gas guided into the ozone generation container based on the detection outputs of the oxygen concentration meter and the ozone concentration meter. Note that a membrane separation type apparatus is used as the nitrogen enrichment apparatus.
- the gas enriched with nitrogen (nitrogen-enriched gas) is released and removed by the nitrogen-enriching device, so that the remaining gas contains a large amount of oxygen.
- the control means controls based on the detection output of each concentration meter, when the ozone concentration is given as a command value, the source gas is controlled to the optimum oxygen concentration and gas flow rate, and the input power of the ozone generator The amount is controlled to the optimum input power amount.
- waste of oxygen can be eliminated, and the operation efficiency can be improved at low cost.
- a part of the compressed air is enriched by the nitrogen enricher, a desired high concentration of oxygen can be obtained without increasing the amount of compressed air. As a result, the loss of the compressor that compresses air can be reduced.
- JP-A-07-277708 (Claim 2, paragraphs [0011] to [0013], [0022], FIGS. 1 and 2)
- the first object of the present invention is to efficiently generate ozone by an ozone generator by removing moisture in the air compressed by a compressor with a dehumidifier, and immediately before flowing into the ozone generator.
- a second object of the present invention is to provide an exhaust gas purification device that can efficiently reduce NOx even when the exhaust gas temperature is low, and can efficiently reduce NOx in almost all exhaust gas temperature regions.
- a third object of the present invention is exhaust gas purification, which can efficiently cool an ozone generator using either or both of nitrogen-enriched gas separated by an air separator or drain water discharged from a dryer. To provide an apparatus.
- a fourth object of the present invention is to provide an exhaust gas purifying apparatus capable of improving the regeneration efficiency of a dryer.
- the first aspect of the present invention is that, as shown in FIGS. 1 and 2, an oxidation catalyst 13, an ozone injection nozzle 14, and a urea-based fluid injection nozzle 16 are disposed on the exhaust pipe 12 of the engine 11 toward the outlet of the exhaust pipe 12. And the selective reduction catalyst 17 are arranged in this order, and are provided in the air flow sensor 58 for detecting the intake air amount of the engine 11 and the exhaust pipe 12 on the upstream side of the ozone injection nozzle 14 to detect the NOx concentration in the exhaust pipe 12.
- An exhaust gas purifying apparatus comprising a NOx sensor 59 that performs, a first temperature sensor 61 that detects an inlet temperature of the selective catalytic reduction catalyst 17, and a second temperature sensor 72 that detects an inlet temperature of the oxidation catalyst 13.
- the injection nozzle 14 is connected to an ozone generator 36, and the ozone generator 36 dries the compressor 37 that compresses air and the air compressed by the compressor 37.
- An ozone concentration sensor 63 provided between the nozzles 14 for detecting the concentration of ozone generated by the ozone generator 39.
- the load of the engine 11 is detected by the load sensor 64, and the air flow sensor 58, NOx sensor 59, Based on the detection outputs of the first temperature sensor 61, the second temperature sensor 72, the flow rate sensor 62, the ozone concentration sensor 63, and the load sensor 64, the controller 67 controls the air amount by the compressor 37 and the ozone generation amount by the ozone generator 39. It is characterized by doing.
- the second aspect of the present invention is an invention based on the first aspect, and further, as shown in FIGS. 2 and 3, an ozone generator 36 is provided between the dryer 38 and the ozone generator 39.
- An air separator 40 is provided for separating the air dried by the dryer 38 into an oxygen-enriched gas having a high oxygen concentration and a nitrogen-enriched gas 54 having a high nitrogen concentration, and the oxygen enrichment separated by the air separator 40 A part of oxygen in the gas is introduced into the ozone generator 39, converted into ozone by the ozone generator 39, and moisture in the dryer 38 is removed by the nitrogen-enriched gas 54 separated by the air separator 40.
- 38, and the ozone generator 39 is operated by either or both of the nitrogen-enriched gas 54 separated by the air separator 40 and the drain water 48 which is the water discharged from the dryer 38. Characterized in that it is configured to be cooled.
- the third aspect of the present invention is an invention based on the second aspect, and further includes a porous moisture absorbing member 39e capable of absorbing drain water 48 on the surface of the ozone generator 39 as shown in FIG. It is characterized by that.
- the fourth aspect of the present invention is an invention based on the second aspect, and as shown in FIGS. 2, 3 and 5, the air separator 40 is constituted by an oxygen-enriched membrane 40a, and the oxygen-enriched film 40a.
- the enriched gas is generated when the air dried by the dryer 38 passes through the oxygen enriched film 40a, and the nitrogen enriched gas 54 passes through the air dried by the dryer 38 without passing through the oxygen enriched film 40a. It is generated by this.
- the fifth aspect of the present invention is an invention based on the second aspect, and further, as shown in FIGS. 2 and 3, the nitrogen-enriched gas 54 separated by the air separator 40 passes through the purge pipe 46.
- the purge pipe 46 is provided with a gas flow rate adjustment valve 51 for adjusting the flow rate of the nitrogen-enriched gas 54 passing through the purge pipe 46, and one end of the purge pipe 46 is supplied from the gas flow rate adjustment valve 51.
- the other end of the branch pipe 52 connected to the purge pipe 46 on the downstream side of the nitrogen-enriched gas is provided to face the surface of the ozone generator 39.
- the controller is based on the detection outputs of the air flow sensor, NOx sensor, first temperature sensor, second temperature sensor, flow rate sensor, ozone concentration sensor, and load sensor. Control the ozone generator. Air is compressed by the compressor, dry air obtained by removing moisture from the air by a dehumidifier is sent to the ozone generator, and ozone generated by the ozone generator is added to the exhaust pipe. As a result, since the air pumped to the air pump contains a relatively large amount of water, ozone is not stably generated by the ozone generator, or a product is generated, resulting in low ozone generation efficiency. Compared with the conventional exhaust gas aftertreatment system, in the present invention, since moisture in the air is removed by the dehumidifier, ozone can be efficiently generated by the ozone generator.
- the controller calculates the required ozone amount based on the detection outputs of the air flow sensor, NOx sensor, second temperature sensor, and load sensor.
- the controller calculates the ozone generation amount based on the detection outputs of the flow rate sensor and the ozone concentration sensor.
- a controller controls a compressor and an ozone generator so that it may correspond to the said ozone required amount.
- the oxidation catalyst oxidizes NO in the exhaust gas to highly reactive NO 2 , so this highly reactive NO 2 is supplied from the urea fluid injection nozzle to the exhaust pipe.
- highly reactive NO 2 proceeds with the urea-based fluid and selective reduction reaction with the selective catalytic reduction catalyst and is reduced to N 2.
- NOx can be efficiently reduced in almost all exhaust gas temperature regions.
- a part of oxygen in the oxygen-enriched gas separated by the air separator is introduced into the ozone generator and converted into ozone by the ozone generator. Since the moisture in the dryer is removed by the nitrogen-enriched gas separated in step 1 to regenerate the dryer, the dryer can be regenerated efficiently. That is, since the air compressed by the compressor does not have to be used directly to regenerate the dryer, the consumption of the air compressed by the compressor can be suppressed. As a result, since the discharge capacity of the compressor can be reduced, the size of the compressor can be reduced. Also, increasing the oxygen-enriched gas increases the amount of moisture in the air that is removed by the dryer, but also increases the nitrogen-enriched gas that is separated by the air separator.
- the increased water inside can be removed.
- the nitrogen-enriched gas also increases or decreases with this increase and decrease, so that the dryer can be efficiently regenerated.
- the ozone generator is cooled using either or both of the nitrogen-enriched gas separated by the air separator and the drain water which is the water discharged from the dryer, the ozone generator can be efficiently cooled.
- the porous moisture absorbing member capable of absorbing drain water is provided on the surface of the ozone generator, when drain water is dropped on the surface of the moisture absorbing member, The drain water penetrates into the porous moisture absorbing member and spreads over a relatively large area, and the ozone generator is cooled by the latent heat when the drain water evaporates.
- the nitrogen-enriched gas is blown onto the surface of the hygroscopic member while the drain water is infiltrated into the porous hygroscopic member, the drain water is quickly vaporized, and this latent heat of vaporization cools the ozone generator more efficiently. it can.
- the air separator is constituted by an oxygen-enriched membrane, and air dried by the dryer passes through the oxygen-enriched membrane to generate an oxygen-enriched gas. Since the air dried by (1) passes through the oxygen-enriched membrane without passing through it, a nitrogen-enriched gas is generated, so that the oxygen-enriched gas and the nitrogen-enriched gas are reliably separated by the oxygen-enriched membrane. As a result, with an air separator having a relatively simple structure, an oxygen-enriched gas and a nitrogen-enriched gas can be efficiently generated by the oxygen-enriched membrane of the air separator.
- the compressor is maintained in the rated operation.
- the flow rate of the oxygen-enriched gas can be adjusted only by adjusting the flow rate of the nitrogen-enriched gas passing through the purge pipe with the gas flow rate adjusting valve.
- the other end of the branch pipe connected to the purge pipe on the downstream side of the nitrogen-enriched gas from the gas flow control valve is provided facing the surface of the ozone generator, so the nitrogen-enriched gas separated by the air separator The gas can be efficiently distributed to the dryer and the ozone generator.
- FIG. 3 It is a flowchart figure which feeds back the difference of the calculated value of ozone required amount, and actual ozone generation amount, and controls ozone generation amount. It is principal part sectional block diagram corresponding to FIG. 3 which shows 2nd Embodiment of this invention.
- the exhaust gas purifying apparatus of the diesel engine 11 is selectively reduced in the exhaust pipe 12 of the engine 11 toward the outlet of the exhaust pipe 12 with an oxidation catalyst 13, an ozone injection nozzle 14, a urea fluid injection nozzle 16.
- the mold catalyst 17 is arranged in this order.
- An intake pipe 19 is connected to the intake port of the engine 11 via an intake manifold 18, and an exhaust pipe 12 is connected to the exhaust port via an exhaust manifold 21.
- the intake pipe 19 is provided with a compressor housing 22a of the turbocharger 22 and an intercooler 20 that cools the intake air compressed by the turbocharger 22, and the exhaust pipe 12 is provided with a turbine of the turbocharger 22.
- a housing 22b is provided.
- Compressor rotor blades are rotatably accommodated in the compressor housing 22a, and turbine rotor blades (not shown) are rotatably accommodated in the turbine housing 22b.
- the compressor rotor blades and the turbine rotor blades are connected by a shaft (not shown), and the compressor rotor blades are rotated via the turbine rotor blades and the shaft by the energy of the exhaust gas discharged from the engine 11, and the compressor rotor blades are rotated.
- the intake air in the intake pipe is compressed.
- the selective catalytic reduction catalyst 17 is accommodated in a case 23 having a larger diameter than the exhaust pipe 12.
- the selective catalytic reduction catalyst 17 is a monolithic catalyst, and is configured by coating a cordierite honeycomb carrier with zeolite or zirconia.
- zeolite include copper zeolite, iron zeolite, zinc zeolite, and cobalt zeolite.
- the selective reduction catalyst 17 made of copper zeolite is configured by coating a honeycomb carrier with a slurry containing zeolite powder obtained by ion exchange of copper.
- the selective reduction catalyst 17 made of iron zeolite, zinc zeolite or cobalt zeolite is configured by coating a honeycomb carrier with a slurry containing zeolite powder obtained by ion exchange of iron, zinc or cobalt. Further, the selective reduction catalyst 17 made of zirconia is configured by coating a honeycomb carrier with a slurry containing ⁇ -alumina powder or ⁇ -alumina powder supporting zirconia.
- the urea fluid injection nozzle 16 is provided in the exhaust pipe 12 on the exhaust gas upstream side of the selective reduction catalyst 17.
- the urea fluid injection nozzle 16 is connected to a urea fluid supply means 26 that supplies a urea fluid 24 to the nozzle 16.
- the urea fluid supply means 26 includes a fluid supply pipe 27 having a tip connected to the urea fluid injection nozzle 16, a fluid tank 28 connected to the base end of the fluid supply pipe 27 and storing the urea fluid 24, A fluid pump 29 that pumps the urea fluid 24 in the fluid tank 28 to the urea fluid injection nozzle 16 and a fluid that adjusts the supply amount (injection amount) of the urea fluid 24 injected from the urea fluid injection nozzle 16.
- the urea-based fluid 24 is one or a mixture of two or more of ammonia gas, urea water, or mist-like urea that functions as a reducing agent in the selective reduction catalyst 17.
- the fluid pump 29 is provided in a fluid supply pipe 27 between the urea fluid injection nozzle 16 and the fluid tank 28, and the fluid supply amount adjusting valve 31 is a fluid between the urea fluid injection nozzle 16 and the fluid pump 29.
- the fluid supply amount adjustment valve 31 is provided in the fluid supply pipe 27 to adjust the supply pressure of the urea fluid 24 to the urea fluid injection nozzle 16, and the base end of the urea fluid injection nozzle 16.
- a fluid on-off valve 33 that opens and closes the base end of the urea-based fluid injection nozzle 16.
- the fluid pressure regulating valve 32 has first to third ports 32a to 32c, the first port 32a is connected to the discharge port of the fluid pump 29, the second port 32b is connected to the fluid on-off valve 33, and the third The port 32 c is connected to the fluid tank 28 via a return pipe 34.
- the urea-based fluid 24 pumped by the fluid pump 29 flows into the fluid pressure regulating valve 32 from the first port 32a, and is pumped to the fluid on-off valve 33 from the second port 32b.
- the pressure at the fluid pressure adjustment valve 32 becomes equal to or higher than a predetermined pressure
- the urea fluid 24 pumped by the fluid pump 29 flows into the fluid pressure adjustment valve 32 from the first port 32a and then returns from the third port 32c. 34 is returned to the fluid tank 28.
- the ozone injection nozzle 14 is provided in the exhaust pipe 12 upstream of the exhaust gas from the urea fluid injection nozzle 16 (FIG. 1).
- the ozone injection nozzle 14 is connected to an ozone generator 36 that generates ozone and supplies the generated ozone to the ozone injection nozzle 14.
- the ozone generator 36 is used to generate ozone that oxidizes NO in the exhaust gas discharged from the diesel engine 11 to NO 2 .
- the ozone generator 36 includes a compressor 37 for compressing air, a dryer 38 for drying the air compressed by the compressor 37, and an ozone generator 39 for converting the air dried by the dryer 38 into ozone. (FIGS. 1 and 2).
- the compressor 37 is configured to be driven by a battery having a DC voltage of 24V.
- the compressor is driven by a battery having a DC voltage of 24V.
- the compressor may be driven by a crankshaft of an engine or by a battery having a DC voltage of 200 to 300V in the case of a hybrid vehicle. Good.
- the dryer 38 is configured by housing a water vapor separation membrane 38a (FIG. 4) that is easily permeable to water vapor (moisture) and hardly permeable to air in a cylindrical housing 38d.
- the water vapor separation membrane 38a is formed by bundling an aromatic polyimide asymmetric hollow fiber 38b having a thickness of 100 ⁇ m, an outer diameter of 500 ⁇ m, and a length of 450 mm, for example, and is accommodated by extending in the longitudinal direction of the housing 38d (FIG. 2). ).
- the hollow fiber 38b has a through hole 38c in the center and has an asymmetrical dense structure in the film thickness direction.
- the inner diameter of the through hole 24c is, for example, 300 ⁇ m.
- An air introduction port 38e for introducing the air compressed by the compressor 37 is formed on one end surface in the longitudinal direction of the housing 38d, and the air dried by the dryer 38 is formed on the other end surface in the longitudinal direction of the housing 38d.
- An air discharge port 38f is formed.
- the air introduction port 38e is connected to one end of each hollow fiber 38b of the water vapor separation membrane 38a, and the air discharge port 38f is connected to the other end of each hollow fiber 38b of the water vapor separation membrane 38a.
- the outlet 38f is connected to the through hole 38c of each hollow fiber 38b.
- a purge gas introduction port 38g for introducing a nitrogen-enriched gas, which will be described later, as a purge gas, and a purge gas discharge port 38h for discharging the nitrogen-enriched gas that is a purge gas together with water vapor (moisture) are formed.
- the nitrogen-enriched gas introduced from the purge gas inlet 38g passes through the outer peripheral surface of the hollow fiber 38b of the water vapor separation membrane 38a and is discharged from the purge gas outlet 38h.
- a silent discharge type ozone generator 39 is used (FIG. 2).
- the ozone generator 39 is disposed between a discharge electrode 39a and a ground electrode 39b arranged in parallel with each other at a predetermined interval, and these electrodes 39a and 39b. It has a dielectric 39c made of ceramic such as Al 2 O 3, a plate-like ceramic cover 39d covering the surface of the ground electrode 39b, and a moisture absorbing member 39e provided on the surface of the ceramic cover 39d.
- a high-frequency high voltage is applied between the pair of electrodes 39a and 39b by a high-voltage power supply device (not shown) to generate plasma discharge between the discharge electrode 39a and the dielectric 39c.
- the ceramic cover 39d is formed of aluminum nitride, silicon carbide or the like having a good thermal conductivity.
- the hygroscopic member 39e is formed of a ceramic such as porous zeolite capable of absorbing drain water 48 described later.
- the moisture absorbing member 39e is formed to be porous by coating the surface of the ceramic cover with a slurry containing zeolite powder or the like and then firing.
- an air separator 40 is provided between the dryer 38 and the ozone generator 39 (FIG. 2).
- the air separator 40 is configured by housing an oxygen-enriched membrane 40a (FIG. 5) having a property of allowing oxygen gas to permeate more easily than nitrogen gas in air in a cylindrical housing 40d.
- the oxygen-enriched film 40a is configured to separate the air dried by the dryer 38 into an oxygen-enriched gas having a high oxygen concentration and a nitrogen-enriched gas having a high nitrogen concentration.
- the oxygen-enriched membrane 40a is formed by bundling a hollow fiber 40b made of a polymer that selectively permeates oxygen gas compared to nitrogen gas and having a through hole 40c formed in the center, and is formed by housing 40d. And extends in the longitudinal direction.
- the hollow fiber 40b constituting the oxygen-enriched membrane 40a is preferably formed of a glassy polymer having a high degree of separation between oxygen gas and nitrogen gas, and the degree of separation between oxygen gas and nitrogen gas is particularly large and mechanical. More preferably, it is formed of polyimide having excellent strength, heat resistance and durability.
- the membrane of the hollow fiber 40b constituting the oxygen-enriched membrane 40a may be a homogeneous membrane having a uniform density in the film thickness direction, or a plurality of hollow fibers having different inner diameters, outer diameters, and densities are inserted.
- a composite film having a non-uniform density in the film thickness direction may be used, but it is preferable to use an asymmetric film having a high transmission rate by having an asymmetrical dense structure in the film thickness direction.
- the film thickness of the hollow fiber 40b is preferably set in the range of 10 ⁇ m to 500 ⁇ m, and the outer diameter of the hollow fiber 40b is preferably set in the range of 50 ⁇ m to 2000 ⁇ m.
- a dry air inlet 40e for introducing the air dried by the dryer 38 is formed on one end face of the housing 40d that accommodates the oxygen-enriched membrane 40a, and an air separator 40 is provided on the other end face of the housing 40d.
- a nitrogen-enriched gas discharge port 40f for discharging the separated nitrogen-enriched gas is formed (FIG. 2).
- the dry air introduction port 40e is connected to one end of each hollow fiber 40b of the oxygen-enriched membrane 40a, and the nitrogen-enriched gas discharge port 40f is connected to the other end of each hollow fiber 40b of the oxygen-enriched membrane 40a.
- the air inlet 40e and the nitrogen-enriched gas outlet 40f are connected to the through hole 40c of each hollow fiber 40b.
- An oxygen-enriched gas discharge port 40g for discharging oxygen-enriched gas is formed on the outer peripheral surface of the housing 40d that accommodates the oxygen-enriched film 40a.
- the oxygen-enriched gas having a higher oxygen concentration is discharged from the oxygen-enriched gas outlet 40g.
- the gap formed in the membrane of the hollow fiber 40b by the thermal vibration is about 5 nm.
- the discharge port of the compressor 37 is connected to the air introduction port 38e of the dryer 38 by the first supply pipe 41, and the air discharge port 38f of the dryer 38 is connected to the dry air introduction port 40e of the air separator 40 by the second supply pipe 42.
- the oxygen-enriched gas outlet 40g of the air separator 40 is connected to the oxygen-enriched gas inlet 39f of the ozone generator 39 by a third supply pipe 43, and a fourth supply is supplied to the ozone outlet 39g of the ozone generator 39.
- One end of the tube 44 is connected.
- the nitrogen-enriched gas discharge port 40f of the air separator 40 is connected to the purge gas introduction port 38g of the dryer 38 by the purge pipe 46, and one end of the drain pipe 47 is connected to the purge gas discharge pipe 38h of the dryer 38.
- the other end of the drain pipe 47 is provided so as to face the surface of the ozone generator 39, that is, the surface of the moisture absorbing member 39e, and the drain water 48, which is water discharged from the dryer 38, passes through the drain pipe 47 and the moisture absorbing member 39e. (FIGS. 2 and 3).
- the first supply pipe 41 is provided with an air tank 49 for storing the air compressed by the compressor 37, and the purge pipe 46 has a gas flow rate adjustment valve for adjusting the flow rate of the nitrogen-enriched gas passing through the purge pipe 46.
- 51 is provided (FIG. 2).
- the air tank 49 is provided to supply a sufficient amount of air to the air separator 40 and relieve air pressure fluctuations even if the flow rates of the oxygen-enriched gas and the nitrogen-enriched gas are suddenly changed.
- One end of a branch pipe 52 is connected to the purge pipe 46 on the downstream side of the nitrogen-enriched gas from the gas flow control valve 51, and the other end of the branch pipe 52 is connected to the surface of the ozone generator 39, that is, the surface of the moisture absorbing member 39e.
- a part of the nitrogen-enriched gas separated by the air separator 40 is supplied to the dryer 38 through the purge pipe 46 from the purge gas inlet 38g, and the remainder of the nitrogen-enriched gas separated by the air separator 40 (mostly) ) Is configured to be sprayed onto the surface of the moisture absorbing member 39e through the purge pipe 46 and the branch pipe 52.
- the flow rate ratio between the nitrogen-enriched gas supplied to the dryer 38 and the nitrogen-enriched gas injected onto the surface of the moisture absorbing member 39e is set to about 1: 9.
- the nitrogen-enriched gas supplied to the dryer 38 from the purge gas inlet 38g is only used for extruding the moisture (drain water) in the dryer 38, so about 10% of all the nitrogen-enriched gases. Small amount is enough.
- the purge pipe 46 and the branch pipe 52 are connected.
- the inner diameter ratio of the purge pipe 46 and the branch pipe 52 on the downstream side of the nitrogen-enriched gas from the section, or the purge pipe 46 on the downstream side of the nitrogen-enriched gas from the connection part of the purge pipe 46 and the branch pipe 52 For example, there is a method of providing a throttle part.
- reference numeral 53 in FIG. 2 is a check valve provided in the fourth supply pipe 44.
- the check valve 53 is configured to allow ozone to flow from the ozone generator 39 to the ozone injection nozzle 14 and prevent ozone from flowing from the ozone injection nozzle 14 to the ozone generator 39.
- reference numeral 54 in FIG. 3 is a nitrogen-enriched gas injected from the other end of the branch pipe 52.
- a case 56 is provided in the exhaust pipe 12 on the exhaust gas upstream side from the ozone injection nozzle 14, and the oxidation catalyst 13 and the particulate filter 57 are accommodated in this case 56 in this order from the exhaust gas upstream side.
- the oxidation catalyst 13 is a monolith catalyst, and is configured by coating a cordierite honeycomb carrier with a noble metal catalyst such as platinum zeolite, platinum alumina, or platinum-palladium alumina.
- the oxidation catalyst 13 made of platinum zeolite is configured by coating a honeycomb carrier with a slurry containing zeolite powder obtained by ion exchange of platinum.
- the oxidation catalyst 13 made of platinum alumina is constituted by coating a honeycomb carrier with a slurry containing ⁇ -alumina powder or ⁇ -alumina powder supporting platinum. Further, the oxidation catalyst 13 made of platinum-palladium alumina is configured by coating a honeycomb carrier with a slurry containing ⁇ -alumina powder or ⁇ -alumina powder supporting platinum and palladium.
- the particulate filter 57 has a polygonal cross section partitioned by a porous partition made of ceramic such as cordierite. The filter 57 is configured by alternately sealing adjacent inlet portions and outlet portions of a large number of through holes formed in parallel with each other by these partition walls. In the filter 57, when the exhaust gas of the engine 11 introduced from the inlet portion of the filter 57 passes through the porous partition wall, the particulates contained in the exhaust gas are collected and discharged from the outlet portion. It has become.
- the exhaust gas purification apparatus includes an air flow sensor 58 that detects the intake air amount of the engine 11, a NOx sensor 59 that is provided in the exhaust pipe 12 upstream of the ozone injection nozzle 14 and detects the NOx concentration in the exhaust pipe 12, and selective reduction.
- a first temperature sensor 61 for detecting the inlet temperature of the mold catalyst 17 and a second temperature sensor 72 for detecting the inlet temperature of the oxidation catalyst 13 are further provided.
- the air flow sensor 58 is provided at the inlet of the intake pipe 19, and the NOx sensor 59 is provided in the exhaust pipe 12 between the turbine housing 22 b and the oxidation catalyst 13.
- the first temperature sensor 61 is provided on the exhaust gas upstream side of the selective reduction multi-catalyst 17 and accommodates the selective reduction catalyst 17.
- the second temperature sensor 72 is provided on the exhaust gas upstream side of the oxidation catalyst 13 and oxidized.
- a case 56 that accommodates the catalyst 13 and the particulate filter 57 is provided.
- the ozone generator 36 has a flow rate sensor 62 for detecting the flow rate of the air dried by the dryer 38, and the concentration of ozone generated by the ozone generator 39 provided between the ozone generator 39 and the ozone injection nozzle 14.
- an ozone concentration sensor 63 for detecting The flow sensor 62 is provided in the third supply pipe 43 between the air separator 40 and the ozone generator 39, and the ozone concentration sensor 63 is provided in the fourth supply pipe 44 between the ozone generator 39 and the check valve 53.
- the ozone concentration sensor 63 is not a semiconductor sensor that is not yet durable against high-concentration ozone, but is an ultraviolet sensor that is durable against high-concentration ozone.
- This ultraviolet type ozone concentration sensor 63 is a sensor that utilizes the property that ozone absorbs ultraviolet rays having a wavelength near 254 nm. Further, the load of the engine 11, that is, the fuel injection amount to the engine 11 is detected by the load sensor 64, and the rotation speed of the engine 11 is detected by the rotation sensor 66.
- the detection outputs of the air flow sensor 58, NOx sensor 59, first temperature sensor 61, second temperature sensor 72, flow rate sensor 62, ozone concentration sensor 63, load sensor 64 and rotation sensor 66 are connected to the control input of the controller 67.
- the control output of the controller 67 is connected to the compressor 37, the ozone generator 39 (high voltage power supply device), the fluid pump 29, the fluid on-off valve 33, and the gas flow rate adjustment valve 51, respectively.
- the controller 67 is provided with a memory 68. In this memory 68, as shown in detail in FIG.
- the memory 68 also stores actual ozone based on the amount of air Co (g / sec) flowing into the ozone generator 39 detected by the flow sensor 62 and the ozone concentration Qo (ppm) detected by the ozone concentration sensor 63.
- the memory 68 includes the NOx concentration in the exhaust gas, the exhaust gas temperature at the inlet of the oxidation catalyst 13, the air amount Qn detected by the air flow sensor 58 and the engine load (fuel injection amount Dn to the engine 11) detected by the load sensor 64. Changes in the flow rate ratio of NO to NO 2 in the exhaust gas with respect to the calculated exhaust gas flow rate are stored as a map.
- the exhaust gas temperature at the inlet of the selective catalytic reduction catalyst 17 is as low as less than 220 ° C.
- the ozone generated by the ozone generator 39 is supplied to the ozone injection nozzle 14 and injected (supplied) from the ozone injection nozzle 14 to the exhaust pipe 12.
- ozone is supplied to the exhaust pipe 12 because a part of NO in the exhaust gas is converted into highly reactive NO 2 by ozone and NO vs. NO in the exhaust gas introduced into the selective catalytic reduction catalyst 17. This is because the flow rate ratio of 2 is brought close to the one-to-one ratio at which the reduction reaction of NO and NO 2 to N 2 by the urea fluid 24 in the selective reduction catalyst 17 proceeds the fastest.
- the controller 67 detects the NOx concentration in the exhaust gas detected by the NOx sensor 59, the exhaust gas temperature at the inlet of the oxidation catalyst 13 detected by the second temperature sensor 72, the air amount Qn detected by the airflow sensor 58, and the load sensor 64.
- the flow rate ratio of NO to NO 2 in the exhaust gas discharged from the engine 11 is obtained based on the engine load (fuel injection amount Dn to the engine 11) detected by the engine 11.
- the controller 67 controls the compressor 37 and the ozone generator 39 (high voltage power supply device) so that the flow rate ratio of NO to NO 2 introduced into the selective catalytic reduction catalyst 17 is close to 1: 1.
- the urea fluid 24 is intermittently injected (supplied) through the fluid supply pipe 27 to the exhaust pipe 12.
- the reason why the urea-based fluid 24 is supplied to the exhaust pipe 12 is to function as a reducing agent that reduces NOx (NO and NO 2 ) in the exhaust gas to N 2 .
- the selective reduction reaction with the fluid 24 proceeds and is reduced to N 2 .
- NOx can be efficiently reduced even when the exhaust gas temperature is low.
- the oxidation catalyst 13 is not activated when the exhaust gas temperature is lower than 220 ° C., and does not exhibit the function of oxidizing NO to NO 2 .
- a specific chemical reaction in the selective catalytic reduction catalyst 17 is represented by the following equations (2) and (3) when the urea fluid 24 is urea water, and when the urea fluid 24 is ammonia gas: It is shown by the following formula (4).
- the above formula (4) is a chemical reaction formula in which NO and NO 2 in the exhaust gas react with ammonia gas (urea fluid 24) in the selective reduction catalyst 17 and NO and NO 2 are reduced to N 2. Show. Here, it is preferable to use ammonia gas as the urea-based fluid 24 because the reduction reaction of NO and NO 2 to N 2 proceeds more quickly than when urea water is used as the urea-based fluid 24. .
- the controller 67 determines the compressor 37 and the ozone generator 39 (high voltage power supply device) of the ozone generator 36 based on the detection output of the first temperature sensor 61. ) And the gas flow rate adjustment valve 51 is closed. This is because, when the exhaust gas temperature becomes relatively high, the oxidation catalyst 13 is activated and exhibits a function of oxidizing NO into NO 2 , so that the ozone generator 36 becomes unnecessary. As a result, even if the exhaust gas temperature becomes high, NOx can be efficiently reduced. Therefore, NOx can be efficiently reduced in almost all exhaust gas temperature regions.
- the air is compressed and stored in the air tank 49.
- the air is dried with moisture removed by a dryer 38, and the dried air is separated into an oxygen-enriched gas having a high oxygen concentration and a nitrogen-enriched gas having a high nitrogen concentration by an air separator 40.
- the oxygen-enriched gas separated by the air separator 40 is supplied to the ozone generator 39, and a part of oxygen in the oxygen-enriched gas is converted into ozone by the ozone generator 39.
- This ozone is supplied to the fourth supply pipe 44. And supplied to the ozone injection nozzle 14.
- Part of the nitrogen-enriched gas 54 separated by the air separator 40 is supplied to the dryer 38 through the purge pipe 46 from the purge gas inlet 38g, and the remainder of the nitrogen-enriched gas 54 separated by the air separator 40 ( Most of the gas is injected through the purge pipe 46 and the branch pipe 52 onto the surface of the moisture absorbing member 39e of the ozone generator 39.
- the drain water 48 that is the water separated by the dryer 38 is pushed out and passes through the drain pipe 47 to the surface of the moisture absorbing member 39 e of the ozone generator 39. It is dripped. At this time, the drain water 48 soaks into the porous moisture absorbing member 39e and spreads over a relatively large area.
- the drain water 48 is quickly vaporized, and the ozone generator 39 is cooled by this latent heat of vaporization.
- both the nitrogen-enriched gas 54 separated by the air separator 40 and the drain water 48 discharged from the dryer 38 are used, and the drain water 48 is soaked into the porous moisture absorbing member 39e to cause internal discharge.
- the ozone generator 39 that easily generates heat is cooled, so that the ozone generator 39 can be efficiently cooled.
- the dryer 38 is regenerated using the nitrogen-enriched gas 54 that is unnecessary for generating ozone without using the oxygen-enriched gas necessary for generating ozone, the dryer 38 is efficiently regenerated. it can.
- the air compressed by the compressor 37 does not have to be used directly to regenerate the dryer 38, the consumption of the air compressed by the compressor 37 can be suppressed.
- the compressor 37 can be downsized.
- the oxygen separator gas is separated by the air separator 40 in order to increase the opening of the gas flow rate adjustment valve 51.
- the nitrogen enriched gas 54 also increases, the increased moisture in the dryer 38 can be removed by the increased nitrogen enriched gas 54. As a result, even if the oxygen-enriched gas increases or decreases, the nitrogen-enriched gas 54 also increases or decreases with this increase and decrease, and the dryer 38 can be efficiently regenerated.
- the increased moisture (drain water 48) in the dryer 38 passes through the drain pipe 47 and is dropped on the surface of the moisture absorbing member 39e of the ozone generator 39 to be used for cooling the ozone generator 39.
- FIG. 8 shows a second embodiment of the present invention. 8, the same reference numerals as those in FIG. 3 denote the same parts.
- a nitrogen spray nozzle 81 provided at a predetermined interval from the surface of the ozone generator 39, that is, the surface of the moisture absorbing member 39e and extending in parallel with the surface of the moisture absorbing member 39e is provided at the tip of the branch pipe 52. Connected.
- a plurality of injection ports 81a facing the surface of the moisture absorbing member 39e are formed at predetermined intervals in the longitudinal direction of the nitrogen injection nozzle 81.
- the other end of the drain pipe 47 whose one end is connected to the purge gas discharge port of the dryer is inserted between the nitrogen spray nozzle 81 and the moisture absorbing member 39e so as to incline toward the moisture absorbing member 39e.
- the configuration other than the above is the same as that of the first embodiment.
- the nitrogen-enriched gas 54 separated by the air separator passes through the purge pipe and the branch pipe 52 and generates ozone from the plurality of injection ports 81a of the nitrogen injection nozzle 81.
- the ozone generator 39 can be cooled more efficiently than the first embodiment because it is sprayed substantially uniformly onto the surface of the moisture absorbing member 39e of the container 39. Since the operation other than the above is substantially the same as the operation of the first embodiment, repeated description will be omitted.
- the exhaust gas purification device of the present invention is applied to a diesel engine.
- the exhaust gas purification device of the present invention may be applied to a gasoline engine.
- the exhaust gas purifying apparatus of the present invention is applied to a diesel engine with a turbocharger. It may be applied to the engine.
- a silent discharge type ozone generator is used.
- a creeping discharge type ozone generator is used, and ozone is generated by radiating ultraviolet rays to air. Or a method of generating ozone by electrolyzing water may be used.
- the air tank is provided between the compressor and the dryer.
- the air tank is provided. It does not have to be.
- the fluid pressure is adjusted by the fluid pressure adjusting valve which is a three-way valve.
- the opening / closing time of the fluid on / off valve is adjusted without using the fluid pressure adjusting valve. It may be performed depending on whether or not the fluid pump is driven.
- the ceramic cover of the ozone generator is formed in a plate shape.
- a plurality of fins are erected at predetermined intervals on the surface of the plate-like ceramic cover. Also good. In this case, the cooling performance of the ozone generator is improved.
- the hygroscopic member is formed porous by firing after coating the ceramic cover and fin surfaces.
- the exhaust gas purification apparatus of the present invention can be used to purify exhaust gas by reducing nitrogen oxides (NOx) contained in the exhaust gas of the engine using ozone and urea-based fluid.
- NOx nitrogen oxides
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Toxicology (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
図1に示すように、ディーゼルエンジン11の排ガス浄化装置は、エンジン11の排気管12にこの排気管12の出口に向って酸化触媒13とオゾン噴射ノズル14と尿素系流体噴射ノズル16と選択還元型触媒17とがこの順で配設されて構成される。このエンジン11の吸気ポートには吸気マニホルド18を介して吸気管19が接続され、排気ポートには排気マニホルド21を介して排気管12が接続される。吸気管19には、ターボ過給機22のコンプレッサハウジング22aと、ターボ過給機22により圧縮された吸気を冷却するインタクーラ20とがそれぞれ設けられ、排気管12にはターボ過給機22のタービンハウジング22bが設けられる。コンプレッサハウジング22aにはコンプレッサ回転翼(図示せず)が回転可能に収容され、タービンハウジング22bにはタービン回転翼(図示せず)が回転可能に収容される。コンプレッサ回転翼とタービン回転翼とはシャフト(図示せず)により連結され、エンジン11から排出される排ガスのエネルギによりタービン回転翼及びシャフトを介してコンプレッサ回転翼が回転し、このコンプレッサ回転翼の回転により吸気管内の吸入空気が圧縮されるように構成される。
この結果、オゾン発生器39の周辺環境(周辺温度や周辺湿度)が変化しても、排ガス中のNOx量とNO対NO2の流量比に見合った量のオゾンを過不足なく排気管12に供給できる、即ちエンジン11の運転状態に追従した正確な量のオゾンを排気管12に供給できる。
NO+NO2+2NH3 → 2N2+3H2O ……(3)
NO+NO2+2NH3 → 2N2+3H2O ……(4)
上記式(2)は、選択還元型触媒17入口の排ガス温度が220℃未満と比較的低いため、比較的少ない量であるけれども、尿素水(尿素系流体24)のアンモニアガスへの加水分解が進む化学反応式を示す。また、上記式(3)は、排ガス中のNO及びNO2が選択還元型触媒17で上記尿素水から加水分解したアンモニアガスと反応して、NO及びNO2がN2に還元される化学反応式を示す。更に、上記式(4)は排ガス中のNO及びNO2が選択還元型触媒17でアンモニアガス(尿素系流体24)と反応して、NO及びNO2がN2に還元される化学反応式を示す。ここで、尿素系流体24として尿素水を用いるよりアンモニアガスを用いた方がNO及びNO2のN2への還元反応が速やかに進むので、尿素系流体24としてアンモニアガスを用いた方が好ましい。
図8は本発明の第2の実施の形態を示す。図8において図3と同一符号は同一部品を示す。この実施の形態では、オゾン発生器39の表面、即ち吸湿部材39eの表面から所定の間隔をあけかつ吸湿部材39eの表面に平行に延びて設けられた窒素噴射ノズル81が分岐管52の先端に接続される。この窒素噴射ノズル81には、吸湿部材39eの表面に対向する複数の噴射口81aが窒素噴射ノズル81の長手方向に所定の間隔をあけて形成される。また一端がドライヤのパージガス排出口に接続されたドレン管47の他端は、窒素噴射ノズル81と吸湿部材39eの間に、吸湿部材39eに向って傾斜するように挿入される。上記以外は第1の実施の形態と同一に構成される。
なお、本国際出願は、2011年9月21日に出願した日本国特許出願第206122号(特願2011-206122)に基づく優先権を主張するものであり、特願2011-206122の全内容を本国際出願に援用する。
Claims (5)
- エンジンの排気管にこの排気管の出口に向って酸化触媒とオゾン噴射ノズルと尿素系流体噴射ノズルと選択還元型触媒とがこの順で配設され、前記エンジンの吸気量を検出するエアフローセンサと前記オゾン噴射ノズルの上流側の排気管に設けられ前記排気管中のNOx濃度を検出するNOxセンサと前記選択還元型触媒の入口温度を検出する第1温度センサと前記酸化触媒の入口温度を検出する第2温度センサとを備えた排ガス浄化装置であって、
前記オゾン噴射ノズルがオゾン発生装置に接続され、
前記オゾン発生装置が、空気を圧縮するコンプレッサと、このコンプレッサにより圧縮された空気を乾燥させるドライヤと、このドライヤにより乾燥された前記空気の流量を検出する流量センサと、この流量センサで検出された前記空気をオゾンに変換するオゾン発生器と、このオゾン発生器と前記オゾン噴射ノズルの間に設けられ前記オゾン発生器で発生したオゾンの濃度を検出するオゾン濃度センサとを有し、
前記エンジンの負荷が負荷センサにより検出され、
前記エアフローセンサ、前記NOxセンサ、前記第1温度センサ、前記第2温度センサ、前記流量センサ、前記オゾン濃度センサ及び前記負荷センサの各検出出力に基づいて、コントローラが前記コンプレッサによる前記空気量及び前記オゾン発生器によるオゾン発生量を制御する
ことを特徴とする排ガス浄化装置。 - 前記オゾン発生装置が、前記ドライヤと前記オゾン発生器との間に設けられ前記ドライヤにより乾燥された前記空気を酸素濃度の高い酸素富化ガスと窒素濃度の高い窒素富化ガスとに分離する空気分離器を更に備え、
前記空気分離器で分離された酸素富化ガス中の酸素の一部を前記オゾン発生器に導入して前記オゾン発生器によりオゾンに変換し、前記空気分離器で分離された窒素富化ガスにより前記ドライヤ内の水分を除去して前記ドライヤを再生するように構成され、
前記オゾン発生器が、前記空気分離器で分離された窒素富化ガス、或いは前記ドライヤから排出された水分であるドレン水のいずれか一方又は双方により冷却されるように構成された請求項1記載の排ガス浄化装置。 - 前記オゾン発生器の表面に前記ドレン水を吸収可能な多孔質の吸湿部材が設けられた請求項2記載の排ガス浄化装置。
- 前記空気分離器が酸素富化膜により構成され、前記酸素富化ガスは前記ドライヤにより乾燥された空気が前記酸素富化膜を通過することにより生成され、前記窒素富化ガスは前記ドライヤにより乾燥された空気が前記酸素富化膜を通過せずに素通りすることにより生成される請求項2記載の排ガス浄化装置。
- 前記空気分離器で分離された窒素富化ガスがパージ管を通って前記ドライヤに供給されるように構成され、前記パージ管にこのパージ管を通過する前記窒素富化ガスの流量を調整するガス流量調整弁が設けられ、一端が前記ガス流量調整弁より窒素富化ガス下流側の前記パージ管に接続された分岐管の他端が前記オゾン発生器の表面に対向して設けられた請求項2記載の排ガス浄化装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013534708A JP5456943B2 (ja) | 2011-09-21 | 2012-09-18 | 排ガス浄化装置 |
CN201280046258.4A CN103827022B (zh) | 2011-09-21 | 2012-09-18 | 废气净化装置 |
EP12834338.1A EP2759517A4 (en) | 2011-09-21 | 2012-09-18 | EXHAUST CLEANER |
US14/346,041 US9156000B2 (en) | 2011-09-21 | 2012-09-18 | Exhaust gas purifier |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011206122 | 2011-09-21 | ||
JP2011-206122 | 2011-09-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013042644A1 true WO2013042644A1 (ja) | 2013-03-28 |
Family
ID=47914408
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2012/073775 WO2013042644A1 (ja) | 2011-09-21 | 2012-09-18 | 排ガス浄化装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US9156000B2 (ja) |
EP (1) | EP2759517A4 (ja) |
JP (1) | JP5456943B2 (ja) |
CN (1) | CN103827022B (ja) |
WO (1) | WO2013042644A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014222026A (ja) * | 2013-05-13 | 2014-11-27 | 日野自動車株式会社 | 排気浄化システム及び排気浄化方法 |
JP2015108355A (ja) * | 2013-12-05 | 2015-06-11 | 株式会社デンソー | 高活性物質添加装置 |
JP2019163753A (ja) * | 2018-03-20 | 2019-09-26 | 株式会社Soken | オゾン供給装置 |
JP2020169640A (ja) * | 2019-04-02 | 2020-10-15 | 株式会社デンソー | 排気浄化システム |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3007795B1 (fr) * | 2013-06-28 | 2015-06-19 | Renault Sa | Systeme et procede de diagnostic de la reduction catalytique selective d'un vehicule automobile. |
US9217236B2 (en) * | 2013-12-27 | 2015-12-22 | Komatsu Ltd. | Work vehicle |
US9677448B2 (en) * | 2015-04-17 | 2017-06-13 | Ford Global Technologies, Llc | Method and system for reducing engine exhaust emissions |
WO2017029142A1 (en) * | 2015-08-19 | 2017-02-23 | Koninklijke Philips N.V. | Oxygen separator with improved efficiency |
US10030557B2 (en) | 2016-11-14 | 2018-07-24 | Ford Global Technologies, Llc | Exhaust passage having first and second catalysts |
DE102017130314A1 (de) * | 2016-12-19 | 2018-06-21 | Johnson Matthey Public Limited Company | Erhöhte NOx-Umwandlung durch Einführung von Ozon |
DE102017213980A1 (de) * | 2017-08-10 | 2019-02-14 | Siemens Aktiengesellschaft | Gasanalysator zur Messung von Stickoxiden und mindestens einer weiteren Komponente eines Abgases |
DE102018216494A1 (de) * | 2018-09-26 | 2020-03-26 | Bayerische Motoren Werke Aktiengesellschaft | Betriebsmittelversorgungsanlage mit einem Luftabscheider, Kraftfahrzeug und Verfahren zum Betrieb einer Betriebsmittelversorgungsanlage |
WO2020083161A1 (zh) * | 2018-10-22 | 2020-04-30 | 上海必修福企业管理有限公司 | 一种发动机尾气臭氧净化系统和方法 |
CN112557454A (zh) * | 2020-12-02 | 2021-03-26 | 中国电子系统工程第二建设有限公司 | 一种用于定量分析痕量尿素的方法及装置 |
CN113477043B (zh) * | 2021-06-30 | 2023-08-04 | 北京京仪自动化装备技术股份有限公司 | 废气处理系统 |
FR3140774A1 (fr) * | 2022-10-13 | 2024-04-19 | Safran Aerosystems | Système de séparation de gaz |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0624710A (ja) * | 1992-07-03 | 1994-02-01 | Ebara Corp | オゾン発生装置 |
JPH06234505A (ja) * | 1993-02-09 | 1994-08-23 | Ube Ind Ltd | 酸素富化気体の製造法 |
JPH07277708A (ja) | 1994-04-15 | 1995-10-24 | Meidensha Corp | オゾン発生装置 |
JP2007016635A (ja) * | 2005-07-05 | 2007-01-25 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
JP2009264285A (ja) * | 2008-04-25 | 2009-11-12 | Toyota Motor Corp | 内燃機関の排気ガス浄化装置 |
JP2010168981A (ja) * | 2009-01-22 | 2010-08-05 | Nissan Motor Co Ltd | 内燃機関の制御装置 |
JP2010209854A (ja) * | 2009-03-11 | 2010-09-24 | Toyota Motor Corp | 内燃機関の排気ガス浄化装置 |
JP2012026331A (ja) | 2010-07-22 | 2012-02-09 | Toyota Industries Corp | 排ガス後処理システム |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0867504A (ja) * | 1994-08-26 | 1996-03-12 | Sankei Giken Kogyo Kk | オゾン発生器 |
JPH10226501A (ja) * | 1997-02-13 | 1998-08-25 | Yupitec:Kk | オゾン発生装置 |
US6916359B2 (en) | 2002-04-25 | 2005-07-12 | The Boc Group, Inc. | Ozone production processes |
US7090811B2 (en) * | 2003-12-11 | 2006-08-15 | General Motors Corporation | Method of reducing NOx in diesel engine exhaust |
JP4263711B2 (ja) * | 2005-09-16 | 2009-05-13 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
CN100500265C (zh) | 2006-02-17 | 2009-06-17 | 中北大学 | 含高浓度氮氧化物废气的净化工艺及设备 |
JP2008075543A (ja) * | 2006-09-21 | 2008-04-03 | Hino Motors Ltd | エンジンの排ガス浄化装置 |
US7790127B1 (en) * | 2009-03-02 | 2010-09-07 | Gm Global Technology Operations, Inc. | NOx emission control system for hydrocarbon fueled power source |
JP2013010647A (ja) * | 2011-06-28 | 2013-01-17 | Hino Motors Ltd | オゾン発生装置 |
-
2012
- 2012-09-18 CN CN201280046258.4A patent/CN103827022B/zh not_active Expired - Fee Related
- 2012-09-18 WO PCT/JP2012/073775 patent/WO2013042644A1/ja active Application Filing
- 2012-09-18 EP EP12834338.1A patent/EP2759517A4/en not_active Withdrawn
- 2012-09-18 US US14/346,041 patent/US9156000B2/en not_active Expired - Fee Related
- 2012-09-18 JP JP2013534708A patent/JP5456943B2/ja active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0624710A (ja) * | 1992-07-03 | 1994-02-01 | Ebara Corp | オゾン発生装置 |
JPH06234505A (ja) * | 1993-02-09 | 1994-08-23 | Ube Ind Ltd | 酸素富化気体の製造法 |
JPH07277708A (ja) | 1994-04-15 | 1995-10-24 | Meidensha Corp | オゾン発生装置 |
JP2007016635A (ja) * | 2005-07-05 | 2007-01-25 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
JP2009264285A (ja) * | 2008-04-25 | 2009-11-12 | Toyota Motor Corp | 内燃機関の排気ガス浄化装置 |
JP2010168981A (ja) * | 2009-01-22 | 2010-08-05 | Nissan Motor Co Ltd | 内燃機関の制御装置 |
JP2010209854A (ja) * | 2009-03-11 | 2010-09-24 | Toyota Motor Corp | 内燃機関の排気ガス浄化装置 |
JP2012026331A (ja) | 2010-07-22 | 2012-02-09 | Toyota Industries Corp | 排ガス後処理システム |
Non-Patent Citations (1)
Title |
---|
See also references of EP2759517A4 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014222026A (ja) * | 2013-05-13 | 2014-11-27 | 日野自動車株式会社 | 排気浄化システム及び排気浄化方法 |
JP2015108355A (ja) * | 2013-12-05 | 2015-06-11 | 株式会社デンソー | 高活性物質添加装置 |
JP2019163753A (ja) * | 2018-03-20 | 2019-09-26 | 株式会社Soken | オゾン供給装置 |
JP7002381B2 (ja) | 2018-03-20 | 2022-01-20 | 株式会社Soken | オゾン供給装置 |
JP2020169640A (ja) * | 2019-04-02 | 2020-10-15 | 株式会社デンソー | 排気浄化システム |
JP7275980B2 (ja) | 2019-04-02 | 2023-05-18 | 株式会社デンソー | 排気浄化システム |
Also Published As
Publication number | Publication date |
---|---|
CN103827022A (zh) | 2014-05-28 |
JP5456943B2 (ja) | 2014-04-02 |
US20140286827A1 (en) | 2014-09-25 |
EP2759517A1 (en) | 2014-07-30 |
EP2759517A4 (en) | 2015-08-26 |
CN103827022B (zh) | 2016-04-13 |
JPWO2013042644A1 (ja) | 2015-03-26 |
US9156000B2 (en) | 2015-10-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5456943B2 (ja) | 排ガス浄化装置 | |
WO2012124531A1 (ja) | 排ガス浄化装置 | |
JP5465361B2 (ja) | 排ガス浄化装置 | |
EP2942503B1 (en) | Exhaust gas purification system and ozone generator | |
JP5770409B2 (ja) | 排ガス浄化装置 | |
US20080102010A1 (en) | Method and Device for Treating Exhaust Gases of Internal Combustion Engines | |
US20100199643A1 (en) | Exhaust gas purification system | |
WO2008123325A1 (ja) | 内燃機関の排気浄化装置 | |
WO2007046519A1 (ja) | 内燃機関の排気浄化装置 | |
JP2012193620A (ja) | 排ガス浄化装置 | |
JP2003524728A (ja) | 排気ガスの温度調節を備えたNOx低減触媒 | |
JP2013010647A (ja) | オゾン発生装置 | |
JP5993698B2 (ja) | 排ガス浄化装置 | |
JP2013174203A (ja) | 排ガス浄化装置 | |
JP3839764B2 (ja) | ディーゼルエンジンの排気浄化装置 | |
JP5952533B2 (ja) | 排ガス浄化装置 | |
JP2006233938A (ja) | 排気浄化装置 | |
JP2014047669A (ja) | オゾン生成手段を含むエンジン用NOx後処理装置 | |
JP5865074B2 (ja) | 排ガス浄化装置 | |
JP2007278162A (ja) | ディーゼルエンジンの排ガス浄化装置 | |
JP2011169264A (ja) | 排気浄化装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12834338 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2013534708 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14346041 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2012834338 Country of ref document: EP |