METHOD AND APPARATUS FOR COMBINATION OF NON-THERMAL PLASMA FOR DIESEL ENGINE EXHAUST GAS POST-TREATMENT SYSTEM AND gamma-ALUMINA DOPED WITH METAL OR METAL OXIDE
PROBLEM TO BE SOLVED: To provide a method and an apparatus in which non-thermal plasma is combined with a metal-doped γ-alumina catalyst for treating oxygen-rich exhaust gas in order to solve the problem that in a conventional catalyst system for treating oxygen-rich exhaust gas, the percentage of N...
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| creator | HABEGER CRAIG F PARK PAUL W BALMER-MILLAR MARI LOU AARDAHL CHRISTOPHER L KOSHKARIAN KENT A CHANDA ASHOK |
| description | PROBLEM TO BE SOLVED: To provide a method and an apparatus in which non-thermal plasma is combined with a metal-doped γ-alumina catalyst for treating oxygen-rich exhaust gas in order to solve the problem that in a conventional catalyst system for treating oxygen-rich exhaust gas, the percentage of NOx reduction is 7-12 in a passive system and 25-40% when an additional hydrocarbon reducing agent is injected into an exhaust gas flow. SOLUTION: When oxygen-rich exhaust gas is treated by non-thermal plasma and then treated by γ-alumina prepared by a metal-doped sol-gel method, the percentage of NOx reduction is about 90% in the absence of SO2 and 80% in the presence of SO2. The remarkable improvement is accomplished when indium, gallium, and tin are used. |
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SOLUTION: When oxygen-rich exhaust gas is treated by non-thermal plasma and then treated by γ-alumina prepared by a metal-doped sol-gel method, the percentage of NOx reduction is about 90% in the absence of SO2 and 80% in the presence of SO2. The remarkable improvement is accomplished when indium, gallium, and tin are used.</description><edition>7</edition><language>eng</language><subject>BLASTING ; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY ; ENGINE PLANTS IN GENERAL ; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES ; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL ; HEATING ; LIGHTING ; MACHINES OR ENGINES IN GENERAL ; MECHANICAL ENGINEERING ; PERFORMING OPERATIONS ; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL ; SEPARATION ; STEAM ENGINES ; THEIR RELEVANT APPARATUS ; TRANSPORTING ; WEAPONS</subject><creationdate>2002</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20020710&DB=EPODOC&CC=JP&NR=2002191940A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20020710&DB=EPODOC&CC=JP&NR=2002191940A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>HABEGER CRAIG F</creatorcontrib><creatorcontrib>PARK PAUL W</creatorcontrib><creatorcontrib>BALMER-MILLAR MARI LOU</creatorcontrib><creatorcontrib>AARDAHL CHRISTOPHER L</creatorcontrib><creatorcontrib>KOSHKARIAN KENT A</creatorcontrib><creatorcontrib>CHANDA ASHOK</creatorcontrib><title>METHOD AND APPARATUS FOR COMBINATION OF NON-THERMAL PLASMA FOR DIESEL ENGINE EXHAUST GAS POST-TREATMENT SYSTEM AND gamma-ALUMINA DOPED WITH METAL OR METAL OXIDE</title><description>PROBLEM TO BE SOLVED: To provide a method and an apparatus in which non-thermal plasma is combined with a metal-doped γ-alumina catalyst for treating oxygen-rich exhaust gas in order to solve the problem that in a conventional catalyst system for treating oxygen-rich exhaust gas, the percentage of NOx reduction is 7-12 in a passive system and 25-40% when an additional hydrocarbon reducing agent is injected into an exhaust gas flow. SOLUTION: When oxygen-rich exhaust gas is treated by non-thermal plasma and then treated by γ-alumina prepared by a metal-doped sol-gel method, the percentage of NOx reduction is about 90% in the absence of SO2 and 80% in the presence of SO2. 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SOLUTION: When oxygen-rich exhaust gas is treated by non-thermal plasma and then treated by γ-alumina prepared by a metal-doped sol-gel method, the percentage of NOx reduction is about 90% in the absence of SO2 and 80% in the presence of SO2. The remarkable improvement is accomplished when indium, gallium, and tin are used.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | BLASTING CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION STEAM ENGINES THEIR RELEVANT APPARATUS TRANSPORTING WEAPONS |
| title | METHOD AND APPARATUS FOR COMBINATION OF NON-THERMAL PLASMA FOR DIESEL ENGINE EXHAUST GAS POST-TREATMENT SYSTEM AND gamma-ALUMINA DOPED WITH METAL OR METAL OXIDE |
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