EXHAUST PURIFICATION SYSTEM AND OZONE GENERATION DEVICE

• Main Authors: TSUMAGARI ICHIRO, KAWADA YOSHIHIRO
• Format: Patent
• Language: English
• Published: 21.08.2014
• Subjects: APPARATUS THEREFOR; BLASTING; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; COMPOUNDS THEREOF; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; INORGANIC CHEMISTRY; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; STEAM ENGINES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; WEAPONS

PROBLEM TO BE SOLVED: To increase ozone generation efficiency of an exhaust purification system and an ozone generation device.SOLUTION: An exhaust purification system comprises: a selective reduction catalyst 21 which is installed on an exhaust passage 15 of an engine 11; a urea water supply device 22 which supplies urea water to the exhaust passage 15 at an upstream side of the selective reduction catalyst 21; an oxygen enrichment unit 38 which separates ozone source gas into high oxygen concentration gas and high nitrogen concentration gas; an ozone generator 31 which generates ozone in an ozone generation space using the high oxygen concentration gas; an ozone supply nozzle 32 which supplies the ozone to the exhaust passage 15 at the upstream side of the selective reduction catalyst 21; a vortex tube 41 which is arranged at a downstream side of the oxygen enrichment unit 38 and discharges the high nitrogen concentration gas, separated by and introduced from the oxygen enrichment unit 38, in a manner that separates the same into cool gas and warm gas; and a cooling device 40 which cools the ozone generation space by blowing the cool gas supplied from the vortex tube 41 to the ozone generator 31.