System and method for supplying oxygenate reductants to an emission treatment system
    1.
    发明授权
    System and method for supplying oxygenate reductants to an emission treatment system 失效
    向排放处理系统提供含氧化合物还原剂的系统和方法

    公开(公告)号:US08056322B2

    公开(公告)日:2011-11-15

    申请号:US11971266

    申请日:2008-01-09

    IPC分类号: F01N3/00

    摘要: A system is provided for supplying reductants to an emission treatment unit. The system comprises a fuel tank adapted to directly or indirectly supply a first premixed fuel stream and a second premixed fuel stream, wherein each fuel stream comprises a primary fuel component and an oxygenate reductant component. An engine is in fluid communication with the fuel tank, wherein the engine is configured to receive the first premixed fuel stream and create an exhaust stream. The system further includes an emission treatment unit to treat the exhaust stream. A separation unit is configured to receive the second premixed fuel stream, separate the second premixed fuel stream into a first fraction stream and a second fraction stream, and supply the first fraction stream to the emission treatment unit, wherein the first fraction stream comprises a higher concentration of the oxygenate reductant component than the second fraction stream.

    摘要翻译: 提供了一种用于将还原剂供应到排放处理单元的系统。 该系统包括适于直接或间接地供应第一预混合燃料流和第二预混合燃料流的燃料箱,其中每个燃料流包括主要燃料组分和含氧化合物还原剂组分。 发动机与燃料箱流体连通,其中发动机构造成接收第一预混燃料流并产生排气流。 该系统还包括用于处理废气流的排放处理单元。 分离单元被配置为接收第二预混合燃料流,将第二预混合燃料流分离成第一级分流和第二级分流,并将第一级分流供应到排放处理单元,其中第一馏分流包含较高的 含氧化合物还原剂组分的浓度高于第二级分流。

    SYSTEM AND METHOD FOR SUPPLYING OXYGENATE REDUCTANTS TO AN EMISSION TREATMENT SYSTEM
    2.
    发明申请
    SYSTEM AND METHOD FOR SUPPLYING OXYGENATE REDUCTANTS TO AN EMISSION TREATMENT SYSTEM 失效
    将氧化还原剂供应给排放处理系统的系统和方法

    公开(公告)号:US20080098728A1

    公开(公告)日:2008-05-01

    申请号:US11971266

    申请日:2008-01-09

    IPC分类号: F01N3/22 F01N3/36

    摘要: A system is provided for supplying reductants to an emission treatment unit. The system comprises a fuel tank adapted to directly or indirectly supply a first premixed fuel stream and a second premixed fuel stream, wherein each fuel stream comprises a primary fuel component and an oxygenate reductant component. An engine is in fluid communication with the fuel tank, wherein the engine is configured to receive the first premixed fuel stream and create an exhaust stream. The system further includes an emission treatment unit to treat the exhaust stream. A separation unit is configured to receive the second premixed fuel stream, separate the second premixed fuel stream into a first fraction stream and a second fraction stream, and supply the first fraction stream to the emission treatment unit, wherein the first fraction stream comprises a higher concentration of the oxygenate reductant component than the second fraction stream. The invention further provides a method for supplying reductants to an emission treatment unit including supplying a first premixed fuel stream to an engine, wherein the engine is configured to create an exhaust stream. A second premixed fuel stream is supplied to a separation unit, wherein the first and second premixed fuel streams each comprise an oxygenate reductant component and a primary fuel component. At least a portion of the second premixed fuel stream is separated into a first fraction stream and a second fraction stream via the separation unit, wherein the first fraction stream comprises a higher concentration of the oxygenate reductant component than the second fraction stream, and supplying the first fraction stream to an emission treatment unit to treat the exhaust stream.

    摘要翻译: 提供了一种用于将还原剂供应到排放处理单元的系统。 该系统包括适于直接或间接地供应第一预混合燃料流和第二预混合燃料流的燃料箱,其中每个燃料流包括主要燃料组分和含氧化合物还原剂组分。 发动机与燃料箱流体连通,其中发动机构造成接收第一预混燃料流并产生排气流。 该系统还包括用于处理废气流的排放处理单元。 分离单元被配置为接收第二预混合燃料流,将第二预混合燃料流分离成第一级分流和第二级分流,并将第一级分流供应到排放处理单元,其中第一馏分流包含较高的 含氧化合物还原剂组分的浓度高于第二级分流。 本发明还提供了一种用于将还原剂供应到排放处理单元的方法,所述排放处理单元包括向发动机提供第一预混合燃料流,其中所述发动机构造成产生排气流。 第二预混燃料流被供应到分离单元,其中第一和第二预混合燃料流各自包含含氧化合物还原剂组分和初级燃料组分。 第二预混合燃料流的至少一部分经由分离单元被分离成第一级分流和第二级分流,其中第一级分流包含比第二级分流更高浓度的含氧化合物还原剂组分, 第一馏分流到排放处理单元以处理废气流。

    OPTIMIZED REDUCTION OF NOx EMISSIONS FROM DIESEL ENGINES

    公开(公告)号:US20090173061A1

    公开(公告)日:2009-07-09

    申请号:US11971267

    申请日:2008-01-09

    IPC分类号: F01N3/36 F01N3/18 F01N11/00

    摘要: A system is provided for operating a diesel engine with reduced emissions of NOx. The system comprises a fuel tank adapted to directly or indirectly supply a first premixed fuel stream and a second premixed fuel stream, wherein each fuel stream comprises a primary fuel component and a reductant component. An engine is in fluid communication with the fuel tank, whereby the engine is configured to receive the first premixed fuel stream and create an exhaust stream. The system includes an emission treatment unit to treat the exhaust stream, and a separation unit configured to receive the second premixed fuel stream. The separation unit is also configured to separate the second premixed fuel stream into a first fraction stream and a second fraction stream, and supply the first fraction stream to the exhaust stream. The first fraction stream comprises a higher concentration of the reductant component than the second fraction stream. A temperature sensor measures the temperature of the exhaust stream, whereby the concentration of the reductant component in the exhaust stream is controlled based on the measured temperature of the exhaust stream. The invention further provides a method for operating a diesel engine with reduced emissions of NOx. The method includes supplying a first premixed fuel stream to an engine, wherein the engine is configured to create an exhaust stream. A second premixed fuel stream is supplied to a separation unit, wherein the first and second premixed fuel streams each comprise a reductant component and a primary fuel component. At least a portion of the second premixed fuel stream is separated into a first fraction stream and a second fraction stream via the separation unit, wherein the first fraction stream comprises a higher concentration of the reductant component than the second fraction stream. At least a portion of the first fraction stream is supplied to the exhaust stream. The temperature of the exhaust stream is measured, and the concentration of the reductant component in the exhaust stream is controlled based on the measured temperature. The selective catalytic reduction of NOx present in the exhaust stream is performed.

    SYSTEM AND METHOD FOR THE ON-BOARD PRODUCTION OF REDUCTANTS
    6.
    发明申请
    SYSTEM AND METHOD FOR THE ON-BOARD PRODUCTION OF REDUCTANTS 审中-公开
    用于板上生产减速机的系统和方法

    公开(公告)号:US20090173058A1

    公开(公告)日:2009-07-09

    申请号:US11971259

    申请日:2008-01-09

    IPC分类号: F01N3/00 F01N3/20 F01N3/18

    摘要: A system is provided for the on-board production of reductants. The system comprises a fuel tank adapted to directly or indirectly supply a first fuel stream and a second fuel stream. An engine is in fluid communication with the fuel tank, and is configured to receive the first fuel stream and create an exhaust stream. The system further includes an emission treatment unit to treat the exhaust stream. A fuel conversion unit is configured to receive the second fuel stream, and also receive a stream comprising oxygen to partially oxidize at least a portion of the second fuel stream thereby forming reductants. In addition, the fuel conversion unit is configured to supply a reductant stream comprising the reductants to the exhaust stream. The invention further provides a method for the on-board production of reductants including supplying a first fuel stream to an engine, wherein the engine is configured to create an exhaust stream. A second fuel stream and a stream comprising oxygen are supplied to a fuel conversion unit. At least a portion of the second fuel stream is partially oxidized in the fuel conversion unit to form reductants, and a reductant stream comprising the reductants is supplied to the exhaust stream. The selective catalytic reduction of NOx present in the exhaust stream is performed.

    摘要翻译: 提供了用于车载生产还原剂的系统。 该系统包括适于直接或间接地供应第一燃料流和第二燃料流的燃料箱。 发动机与燃料箱流体连通,并且构造成接收第一燃料流并产生排气流。 该系统还包括用于处理废气流的排放处理单元。 燃料转换单元被构造成接收第二燃料流,并且还接收包含氧的流以部分地氧化至少一部分第二燃料流,从而形成还原剂。 此外,燃料转化单元构造成将包含还原剂的还原剂流供应到排气流。 本发明还提供一种用于车载生产还原剂的方法,包括向发动机提供第一燃料流,其中发动机被配置成产生排气流。 第二燃料流和包含氧气的流被供应到燃料转化单元。 第二燃料流的至少一部分在燃料转化单元中被部分氧化以形成还原剂,并且将包含还原剂的还原剂流供应到废气流中。 执行排气流中存在的NOx的选择性催化还原。

    Methods for reducing emissions from diesel engines
    7.
    发明授权
    Methods for reducing emissions from diesel engines 失效
    减少柴油发动机排放的方法

    公开(公告)号:US07987663B2

    公开(公告)日:2011-08-02

    申请号:US11948305

    申请日:2007-11-30

    IPC分类号: F01N3/36

    摘要: A method is provided for operating a diesel engine with reduced emissions. The method comprises combusting a first biodiesel blend fuel in a diesel engine resulting in the production of diesel exhaust gases containing NOx. The diesel exhaust gases are admixed with a second biodiesel blend fuel, and the second biodiesel blend fuel is hydrolyzed to form reducing agents. The diesel exhaust gases containing NOx are passed through an NOx-reducing catalyst to reduce the NOx through a selective catalytic reduction reaction with the reducing agents. The invention further provides a method for operating a diesel engine with reduced emissions, comprising combusting a first biodiesel blend fuel in a diesel engine resulting in the production of diesel exhaust gases containing NOx. A second biodiesel blend fuel is converted in a fuel processor thereby forming reducing agents, and the diesel exhaust gases are admixed with the reducing agents. The diesel exhaust gases containing NOx are passed through an NOx-reducing catalyst to reduce the NOx through a selective catalytic reduction reaction with the reducing agents.

    摘要翻译: 提供了一种以减少排放来操作柴油发动机的方法。 该方法包括在柴油发动机中燃烧第一生物柴油混合燃料,导致生产含有NOx的柴油废气。 柴油废气与第二生物柴油混合燃料混合,第二生物柴油混合燃料被水解以形成还原剂。 含有NOx的柴油废气通过NOx还原催化剂,以通过与还原剂的选择性催化还原反应来还原NOx。 本发明还提供了一种用于操作具有减少的排放的柴油发动机的方法,包括在柴油发动机中燃烧第一生物柴油混合燃料,导致生产含有NOx的柴油废气。 在燃料处理器中转化第二生物柴油混合燃料,从而形成还原剂,并且将柴油废气与还原剂混合。 含有NOx的柴油废气通过NOx还原催化剂,以通过与还原剂的选择性催化还原反应来还原NOx。

    METHODS FOR REDUCING EMISSIONS FROM DIESEL ENGINES
    8.
    发明申请
    METHODS FOR REDUCING EMISSIONS FROM DIESEL ENGINES 失效
    减少柴油发动机排放的方法

    公开(公告)号:US20090139215A1

    公开(公告)日:2009-06-04

    申请号:US11948305

    申请日:2007-11-30

    IPC分类号: F01N3/10

    摘要: A method is provided for operating a diesel engine with reduced emissions. The method comprises combusting a first biodiesel blend fuel in a diesel engine resulting in the production of diesel exhaust gases containing NOx. The diesel exhaust gases are admixed with a second biodiesel blend fuel, and the second biodiesel blend fuel is hydrolyzed to form reducing agents. The diesel exhaust gases containing NOx are passed through an NOx-reducing catalyst to reduce the NOx through a selective catalytic reduction reaction with the reducing agents. The invention further provides a method for operating a diesel engine with reduced emissions, comprising combusting a first biodiesel blend fuel in a diesel engine resulting in the production of diesel exhaust gases containing NOx. A second biodiesel blend fuel is converted in a fuel processor thereby forming reducing agents, and the diesel exhaust gases are admixed with the reducing agents. The diesel exhaust gases containing NOx are passed through an NOx-reducing catalyst to reduce the NOx through a selective catalytic reduction reaction with the reducing agents.

    摘要翻译: 提供了一种以减少排放来操作柴油发动机的方法。 该方法包括在柴油发动机中燃烧第一生物柴油混合燃料,导致生产含有NOx的柴油废气。 柴油废气与第二生物柴油混合燃料混合,第二生物柴油混合燃料被水解以形成还原剂。 含有NOx的柴油废气通过NOx还原催化剂,以通过与还原剂的选择性催化还原反应来还原NOx。 本发明还提供了一种用于操作具有减少的排放的柴油发动机的方法,包括在柴油发动机中燃烧第一生物柴油混合燃料,导致生产含有NOx的柴油废气。 在燃料处理器中转化第二生物柴油混合燃料,从而形成还原剂,并且将柴油废气与还原剂混合。 含有NOx的柴油废气通过NOx还原催化剂,以通过与还原剂的选择性催化还原反应来还原NOx。

    Reduction of nitrogen oxides using multiple split streams
    9.
    发明授权
    Reduction of nitrogen oxides using multiple split streams 失效
    使用多个分流减少氮氧化物

    公开(公告)号:US07494634B2

    公开(公告)日:2009-02-24

    申请号:US11651710

    申请日:2007-01-10

    CPC分类号: F01N3/035 F01N3/206 Y02C20/10

    摘要: Systems and methods of removing at least nitrogen oxides from an exhaust fluid generally include dividing a flow of an exhaust fluid comprising a concentration of nitric oxide into three types of flow-through cells. The first flow-through cell comprises a catalyst configured to reduce the nitric oxide with a reductant to form a first feedstream comprising nitrogen containing species derived therefrom. The second flow-through cell comprises a catalyst configured to oxidize nitric oxide to form a second feedstream comprising nitrogen dioxide. The third flow-through cell does not change the nitric oxide concentration and form a third feedstream comprising nitric oxide. After flowing through the three different types of cells, the feedstreams are mixed to form a homogenous mixture and then fed to a catalyst bed configured to convert the nitrogen containing species, the nitric oxide, and the nitrogen dioxide to a fluid comprising nitrogen gas and water.

    摘要翻译: 从废气流中至少除去氮氧化物的系统和方法通常包括将包含浓度的一氧化氮的排出流体的流分成三种流通池。 第一流通池包括被配置成用还原剂还原一氧化氮以形成包含由其衍生的含氮物质的第一进料流的催化剂。 第二流通池包括被配置为氧化一氧化氮以形成包含二氧化氮的第二进料流的催化剂。 第三流通池不改变一氧化氮浓度并形成包含一氧化氮的第三种进料流。 在流过三种不同类型的细胞之后,将进料流混合以形成均匀的混合物,然后进料到催化剂床,该催化剂床构造成将含氮物质,一氧化氮和二氧化氮转化为包含氮气和水的流体 。

    Reduction of nitrogen oxides using multiple split streams
    10.
    发明申请
    Reduction of nitrogen oxides using multiple split streams 失效
    使用多个分流减少氮氧化物

    公开(公告)号:US20080166283A1

    公开(公告)日:2008-07-10

    申请号:US11651710

    申请日:2007-01-10

    IPC分类号: B01D53/54

    CPC分类号: F01N3/035 F01N3/206 Y02C20/10

    摘要: Systems and methods of removing at least nitrogen oxides from an exhaust fluid generally include dividing a flow of an exhaust fluid comprising a concentration of nitric oxide into three types of flow-through cells. The first flow-through cell comprises a catalyst configured to reduce the nitric oxide with a reductant to form a first feedstream comprising nitrogen containing species derived therefrom. The second flow-through cell comprises a catalyst configured to oxidize nitric oxide to form a second feedstream comprising nitrogen dioxide. The third flow-through cell does not change the nitric oxide concentration and form a third feedstream comprising nitric oxide. After flowing through the three different types of cells, the feedstreams are mixed to form a homogenous mixture and then fed to a catalyst bed configured to convert the nitrogen containing species, the nitric oxide, and the nitrogen dioxide to a fluid comprising nitrogen gas and water.

    摘要翻译: 从废气流中至少除去氮氧化物的系统和方法通常包括将包含浓度的一氧化氮的排出流体的流分成三种流通池。 第一流通池包括被配置成用还原剂还原一氧化氮以形成包含由其衍生的含氮物质的第一进料流的催化剂。 第二流通池包括被配置为氧化一氧化氮以形成包含二氧化氮的第二进料流的催化剂。 第三流通池不改变一氧化氮浓度并形成包含一氧化氮的第三种进料流。 在流过三种不同类型的细胞之后,将进料流混合以形成均匀的混合物,然后进料到催化剂床,该催化剂床构造成将含氮物质,一氧化氮和二氧化氮转化为包含氮气和水的流体 。