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公开(公告)号：US20230031827A1
公开(公告)日：2023-02-02
申请号：US17937130
申请日：2022-09-30
发明人： James M. Wurtz, JR. , Scott Gatewood , Michael Thomason , D. Todd Jacobs , Daniel R. Piche , Cody J. Molls , H. Peter Claussen , John W. Robinson, JR.
摘要： A diesel-emissions reduction unit having an inlet adapted to receive an exhaust stream of the diesel engine; a diesel oxidation trap catalyst located adjacent the inlet; a dosing controller and an injection lance arranged to meter aqueous NH3 into the exhaust stream; a NOx concentration sensor and a NH3 concentration sensor with at least one oxidation catalyst panel arranged to isolate the NOx concentration sensor from NH3 in the exhaust stream; and an exhaust heater arranged to heat the exhaust stream of the diesel engine toward the inlet of the diesel emissions reduction unit.
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公开(公告)号：US11248509B2
公开(公告)日：2022-02-15
申请号：US17052741
申请日：2019-05-06
摘要： A selective catalytic reduction system control system (10) and method of its use include an ammonia (“NH3”) slip sensor (13) located within an interior space (27) of an exhaust stack (15) of a selective catalytic reactor (31), toward an inlet end (25) of the stack (15); a housing (17) located within the interior space of the exhaust stack; the housing including face panels 19; a nitrogen oxides (“NOx”) sensor (11) contained within an interior space (29) defined by the face panels of the housing, at least two of the face panels (19I, 19O) containing an oxidation catalyst; and a dosing controller (59) in communication with the NH3 and NOx sensors, the dosing controller including a microprocessor with dosing logic embedded thereon. The housing with oxidation catalyst acts as a linear box, isolating the NOx sensor from NH3 slip, linearizing the NOx sensor signal.
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3.发明公开公开(公告)号：US20230193804A1
公开(公告)日：2023-06-22
申请号：US18171526
申请日：2023-02-20
CPC分类号： F01N3/208 , F01N3/103 , F01N13/008 , F01N2560/026 , F01N2610/02 , F01N2900/14 , F01N2900/16 , F01N2560/021
摘要： A selective catalytic reduction system control system (10) and method of its use include an ammonia (“NH3”) slip sensor (13) located within an interior space (27) of an exhaust stack (15) of a selective catalytic reactor (31), toward an inlet end (25) of the stack (15); a housing (17) located within the interior space of the exhaust stack; the housing including face panels 19; a nitrogen oxides (“NOx”) sensor (11) contained within an interior space (29) defined by the face panels of the housing, at least two of the face panels (19I, 19O) containing an oxidation catalyst; and a dosing controller (59) in communication with the NH3 and NOx sensors, the dosing controller including a microprocessor with dosing logic embedded thereon. The housing with oxidation catalyst acts as a linear box, isolating the NOx sensor from NH3 slip, linearizing the NOx sensor signal.
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公开(公告)号：US20210322924A1
公开(公告)日：2021-10-21
申请号：US17052735
申请日：2019-01-14
IPC分类号： B01D53/94 , B01J23/42 , B01J37/02 , B01J35/10 , B01J35/04 , B01J21/02 , B01J37/08 , F01N3/28
摘要： A diesel engine emissions catalyst which may be used to fill a niche between standard oxidation catalyst and diesel particulate filters for control of diesel particulate matter. The catalyst includes a structure (substrate) comprising one or more coated, corrugated micro-expanded metal foil layers. The coated surface may be a high surface area, stabilized, and promoted washcoat layer. The corrugated pattern may include a herringbone-style pattern that, when in use, is oriented in a longitudinal direction of the diesel engine exhaust flow. The micro-expanded metal foil provides small openings or eyes that, as the exhaust flow passes through the catalyst (transverse to the eye opening), particulates in the flow impinge on the surface and becomes trapped in the eyes. The catalyst may be used to treat a locomotive engine exhaust stream and may be used with a selective catalyst reduction system.
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公开(公告)号：US11585254B2
公开(公告)日：2023-02-21
申请号：US17671250
申请日：2022-02-14
摘要： A selective catalytic reduction system control system (10) and method of its use include an ammonia (“NH3”) slip sensor (13) located within an interior space (27) of an exhaust stack (15) of a selective catalytic reactor (31), toward an inlet end (25) of the stack (15); a housing (17) located within the interior space of the exhaust stack; the housing including face panels 19; a nitrogen oxides (“NOx”) sensor (11) contained within an interior space (29) defined by the face panels of the housing, at least two of the face panels (19I, 19O) containing an oxidation catalyst; and a dosing controller (59) in communication with the NH3 and NOx sensors, the dosing controller including a microprocessor with dosing logic embedded thereon. The housing with oxidation catalyst acts as a linear box, isolating the NOx sensor from NH3 slip, linearizing the NOx sensor signal.
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公开(公告)号：US20220297063A1
公开(公告)日：2022-09-22
申请号：US17833707
申请日：2022-06-06
IPC分类号： B01D53/94 , B01J21/02 , B01J23/42 , B01J35/04 , B01J35/10 , B01J37/02 , B01J37/08 , F01N3/28
摘要： A diesel engine emissions catalyst which may be used to fill a niche between standard oxidation catalyst and diesel particulate filters for control of diesel particulate matter. The catalyst includes a structure (substrate) comprising one or more coated, corrugated micro-expanded metal foil layers. The coated surface may be a high surface area, stabilized, and promoted washcoat layer. The corrugated pattern may include a herringbone-style pattern that, when in use, is oriented in a longitudinal direction of the diesel engine exhaust flow. The micro-expanded metal foil provides small openings or eyes that, as the exhaust flow passes through the catalyst (transverse to the eye opening), particulates in the flow impinge on the surface and becomes trapped in the eyes. The catalyst may be used to treat a locomotive engine exhaust stream and may be used with a selective catalyst reduction system.
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公开(公告)号：US20210231039A1
公开(公告)日：2021-07-29
申请号：US17052741
申请日：2019-05-06
摘要： A selective catalytic reduction system control system (10) and method of its use include an ammonia (“NH3”) slip sensor (13) located within an interior space (27) of an exhaust stack (15) of a selective catalytic reactor (31), toward an inlet end (25) of the stack (15); a housing (17) located within the interior space of the exhaust stack; the housing including face panels 19; a nitrogen oxides (“NOx”) sensor (11) contained within an interior space (29) defined by the face panels of the housing, at least two of the face panels (19I, 19O) containing an oxidation catalyst; and a dosing controller (59) in communication with the NH3 and NOx sensors, the dosing controller including a microprocessor with dosing logic embedded thereon. The housing with oxidation catalyst acts as a linear box, isolating the NOx sensor from NH3 slip, linearizing the NOx sensor signal.
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公开(公告)号：US11739673B2
公开(公告)日：2023-08-29
申请号：US17937130
申请日：2022-09-30
发明人： James M. Wurtz, Jr. , Scott Gatewood , Michael Thomason , D. Todd Jacobs , Daniel R. Piche , Cody J. Molls , H. Peter Claussen , John W. Robinson, Jr.
CPC分类号： F01N3/2066 , F01N3/035 , F01N3/022 , F01N3/2892 , F01N2240/16 , F01N2560/021 , F01N2560/026 , F01N2570/14 , F01N2610/02
摘要： A diesel-emissions reduction unit having an inlet adapted to receive an exhaust stream of the diesel engine; a diesel oxidation trap catalyst located adjacent the inlet; a dosing controller and an injection lance arranged to meter aqueous NH3 into the exhaust stream; a NOx concentration sensor and a NH3 concentration sensor with at least one oxidation catalyst panel arranged to isolate the NOx concentration sensor from NH3 in the exhaust stream; and an exhaust heater arranged to heat the exhaust stream of the diesel engine toward the inlet of the diesel emissions reduction unit.
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公开(公告)号：US20220235683A1
公开(公告)日：2022-07-28
申请号：US17671250
申请日：2022-02-14
摘要： A selective catalytic reduction system control system (10) and method of its use include an ammonia (“NH3”) slip sensor (13) located within an interior space (27) of an exhaust stack (15) of a selective catalytic reactor (31), toward an inlet end (25) of the stack (15); a housing (17) located within the interior space of the exhaust stack; the housing including face panels 19; a nitrogen oxides (“NOx”) sensor (11) contained within an interior space (29) defined by the face panels of the housing, at least two of the face panels (19I, 19O) containing an oxidation catalyst; and a dosing controller (59) in communication with the NH3 and NOx sensors, the dosing controller including a microprocessor with dosing logic embedded thereon. The housing with oxidation catalyst acts as a linear box, isolating the NOx sensor from NH3 slip, linearizing the NOx sensor signal.
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公开(公告)号：US11351502B2
公开(公告)日：2022-06-07
申请号：US17052735
申请日：2019-01-14
IPC分类号： B01D53/94 , B01J21/02 , B01J23/42 , B01J35/04 , B01J35/10 , B01J37/02 , B01J37/08 , F01N3/28
摘要： A diesel engine emissions catalyst which may be used to fill a niche between standard oxidation catalyst and diesel particulate filters for control of diesel particulate matter. The catalyst includes a structure (substrate) comprising one or more coated, corrugated micro-expanded metal foil layers. The coated surface may be a high surface area, stabilized, and promoted washcoat layer. The corrugated pattern may include a herringbone-style pattern that, when in use, is oriented in a longitudinal direction of the diesel engine exhaust flow. The micro-expanded metal foil provides small openings or eyes that, as the exhaust flow passes through the catalyst (transverse to the eye opening), particulates in the flow impinge on the surface and becomes trapped in the eyes. The catalyst may be used to treat a locomotive engine exhaust stream and may be used with a selective catalyst reduction system.
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