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公开(公告)号：US11125133B2
公开(公告)日：2021-09-21
申请号：US16500340
申请日：2018-04-03
申请人： BASF CORPORATION
IPC分类号： F01N3/08 , F01N3/10 , F01N3/20 , F01N3/28 , B01J21/04 , B01J23/58 , B01J23/656 , B01J29/76 , B01J35/00 , B01J35/04 , B01D53/94
摘要： The invention provides an emission control system for treatment of an exhaust gas stream that includes an oxidation catalyst composition disposed on a substrate in fluid communication with the exhaust gas stream; at least one selective catalytic reduction (SCR) composition disposed on a substrate downstream from the oxidation catalyst composition, and a hydrogen injection article configured to introduce hydrogen into the exhaust gas stream upstream of the oxidation catalyst composition or downstream of the oxidation catalyst composition and upstream of the at least one SCR composition. The invention also provides a method of treating an exhaust gas stream, the method including receiving the exhaust gas stream into the emission control system of the invention and intermittently introducing hydrogen upstream of the oxidation catalyst article or downstream of the oxidation catalyst article and upstream stream of the SCR article.
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公开(公告)号：US11890575B2
公开(公告)日：2024-02-06
申请号：US17807392
申请日：2022-06-17
申请人： BASF Corporation
IPC分类号： B01D53/94 , B01J23/58 , B01J23/656 , B01J21/04 , B01J29/68 , B01J23/44 , B01J23/34 , B01J21/12 , B01J29/76 , B01J35/00 , F01N3/10 , F01N3/20 , F01N3/28
CPC分类号： B01D53/9477 , B01D53/944 , B01D53/9418 , B01D53/9468 , B01D53/9472 , B01D53/9481 , B01J21/04 , B01J21/12 , B01J23/34 , B01J23/44 , B01J23/58 , B01J23/6562 , B01J29/68 , B01J29/763 , B01J35/0006 , F01N3/106 , F01N3/2066 , F01N3/2803 , B01D2255/1021 , B01D2255/1023 , B01D2255/2042 , B01D2255/2073 , B01D2255/20723 , B01D2255/20738 , B01D2255/20761 , B01D2255/50 , B01D2255/904 , B01D2255/9022 , B01D2255/9032 , B01D2255/91 , B01D2255/911 , F01N2370/02
摘要： The present disclosure is directed to an emission treatment system for NOx abatement in an exhaust stream of an ammonia-fueled engine, the emission treatment system including a selective catalytic reduction (SCR) catalyst disposed on a substrate in fluid communication with the exhaust stream, an oxidation catalyst disposed on a substrate positioned either upstream or downstream of the SCR catalyst and in fluid communication with the exhaust stream and the SCR catalyst, and optionally, one or more adsorption components disposed on a substrate positioned upstream and/or downstream of the SCR catalyst and in fluid communication with the exhaust stream and the SCR catalyst, the adsorption component chosen from low temperature NOx adsorbers (LT-NA), low temperature ammonia adsorbers (LT-AA), low temperature water vapor adsorbers (LT-WA), and combinations thereof. The disclosure further provides a related method of treatment of an exhaust gas.
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公开(公告)号：US20210102486A1
公开(公告)日：2021-04-08
申请号：US16500340
申请日：2018-04-03
申请人： BASF CORPORATION
IPC分类号： F01N3/20 , B01J23/58 , B01J21/04 , B01J23/656 , B01J35/00 , B01J35/04 , B01J29/76 , B01D53/94 , F01N3/10 , F01N3/08 , F01N3/28
摘要： The invention provides an emission control system for treatment of an exhaust gas stream that includes an oxidation catalyst composition disposed on a substrate in fluid communication with the exhaust gas stream; at least one selective catalytic reduction (SCR) composition disposed on a substrate downstream from the oxidation catalyst composition, and a hydrogen injection article configured to introduce hydrogen into the exhaust gas stream upstream of the oxidation catalyst composition or downstream of the oxidation catalyst composition and upstream of the at least one SCR composition. The invention also provides a method of treating an exhaust gas stream, the method including receiving the exhaust gas stream into the emission control system of the invention and intermittently introducing hydrogen upstream of the oxidation catalyst article or downstream of the oxidation catalyst article and upstream stream of the SCR article.
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