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    • 24. 发明公开
    • 유체 증발 방법 및 장치
    • 用于蒸发流体的方法和装置
    • KR1020100009650A
    • 2010-01-28
    • KR1020097026680
    • 2008-05-21
    • 콘티넨탈 에미텍 페어발퉁스 게엠베하
    • 히르트,피터브룩,롤프
    • F01N3/20B01J19/26
    • F01N3/2066F01N3/36F01N2240/40F01N2610/02F01N2610/06F01N2610/10F01N2610/14Y02A50/2325Y02T10/24
    • The method according to the invention for evaporating a predeterminable volume of a fluid comprises the following steps: a) successive addition of at least one first partial volume at a first volume adding rate (17) and at least one predeterminable second partial volume that is different from the first partial volume, at a second volume adding rate (17) to a supply line (3); b) at least partial evaporating of the partial volumes such that a vapor film is formed between the partial volumes and a wall of the supply line (3); c) conveying the partial volumes through the supply line (3) to an evaporator surface (5); and d) applying the partial volumes to a region of the evaporator surface (5), the position of which is varied as a function of at least one of the following parameters: i) the mass of the corresponding partial volume and ii) the volume adding rate (17) of the corresponding partial volume. The method according to the invention and the device (1) according to the invention advantageously permit an evaporation of a fluid, particularly of a urea/water solution, in a manner that is as effective as possible. The utilization of the highest possible proportion of evaporator surfaces is achieved by the mass and/or volume addition rate-dependent distribution of the impingement surfaces on the evaporator surface (5). For this purpose, a heating strategy is advantageously employed in the region of the supply line (3) that ensures that the Leidenfrost effect occurs when the individual partial volumes are added. In this manner, a distribution that is as even as possible can be achieved using a corresponding configuration of the geometry of the evaporator channel (4).
    • 根据本发明的用于蒸发流体的可预定体积的方法包括以下步骤:a)以第一体积添加率(17)和至少一个不同的可预定的第二部分体积连续添加至少一个第一部分体积 从第一部分体积以第二体积添加率(17)到供应线(3); b)至少部分蒸发部分体积,使得在部分体积和供应管线(3)的壁之间形成蒸气膜; c)将部分体积通过供应管线(3)输送到蒸发器表面(5); 以及d)将所述部分体积施加到所述蒸发器表面(5)的区域,所述区域的位置作为以下参数中的至少一个的函数而变化:i)相应部分体积的质量,以及ii)体积 添加相应部分卷的速率(17)。 根据本发明的方法和根据本发明的装置(1)有利地允许流体,特别是尿素/水溶液的流体以尽可能有效的方式蒸发。 通过蒸发器表面(5)上的冲击表面的质量和/或体积添加速率相关分布来实现蒸发器表面的最高可能比例的利用。 为此,在供应管线(3)的区域中有利地使用加热策略,其确保当加入各个部分体积时发生莱顿弗罗斯特效应。 以这种方式,可以使用蒸发器通道(4)的几何形状的相应配置来实现尽可能均匀的分布。
    • 25. 发明公开
    • 가스 혼합물을 제공하는 방법 및 장치
    • 用于提供气体混合物的方法和装置
    • KR1020090037398A
    • 2009-04-15
    • KR1020087030483
    • 2007-05-16
    • 콘티넨탈 에미텍 페어발퉁스 게엠베하
    • 브뤼크롤프브루거마르크해리히토마스히르트페터클라인울프
    • B01D53/90B01D53/94F01N3/20
    • B01D53/9431B01D53/90C01C1/08C01C1/086F01N3/2066F01N2240/20F01N2240/40F01N2610/02F01N2610/06F01N2610/10F01N2610/11Y02T10/24
    • The invention relates to a device (1) for providing a gaseous mixture comprising at least one of the following substances: a) at least one reducing agent and b) at least one reducing agent precursor. A reservoir (20) for the aqueous solution (45) comprises at least one reducing agent precursor that can be fluidically connected to an evaporator chamber (24), and means for dosing the aqueous solution (45) in the evaporator chamber (24). Means (27, 63) for heating the evaporator chamber (24), which can heat the evaporator chamber (24) to a temperature higher than or equal to a critical temperature, in which the aqueous solution (45) is at least partially evaporated, are provided. The device according to the invention (1) and the inventive method enable a reducing agent to be provided for selective catalytic reduction of nitrogen oxides in the waste gas of an internal combustion engine. In a preferred embodiment, the evaporator unit (12) is configured as an evaporator chamber (24) and the hydrolysis catalyst (17) is arranged outside the waste gas system. As a result, the size of the hydrolysis catalyst (17) is reduced, allowing a compact design.
    • 本发明涉及一种用于提供包含以下物质中的至少一种的气体混合物的装置(1):a)至少一种还原剂和b)至少一种还原剂前体。 用于水溶液(45)的储存器(20)包括至少一种能够流体连接到蒸发器室(24)的还原剂前体,以及用于将蒸发室(24)中的水溶液(45)计量的装置。 用于加热蒸发器室(24)的装置(27,63),其可将蒸发器室(24)加热到高于或等于临界温度的温度,其中水溶液(45)至少部分蒸发, 被提供。 根据本发明(1)的装置和本发明的方法使得能够提供还原剂用于内燃机的废气中的氮氧化物的选择性催化还原。 在优选实施例中,蒸发器单元(12)构造为蒸发器室(24),并且水解催化剂(17)布置在废气系统的外部。 结果,水解催化剂(17)的尺寸减小,从而使设计紧凑。
    • 27. 发明公开
    • 산화촉매 및 그것을 이용한 배기가스 정화 시스템
    • 氧化催化剂和排气净化系统
    • KR1020080048958A
    • 2008-06-03
    • KR1020070121979
    • 2007-11-28
    • 유미코어 니폰 쇼쿠바이 가부시키가이샤유미코어 쇼쿠바이 유에스에이 인코포레이티드
    • 이케다마사노리가토나오히로
    • B01J23/42B01J23/44B01J21/00
    • B01J23/44B01D53/9418B01D53/944B01D53/9477B01D2251/2062B01D2255/1021B01D2255/1023B01D2258/01B01J23/745B01J35/0006B01J35/04B01J35/10B01J37/0036B01J37/0246B01J37/0248F01N3/206F01N2240/40Y02T10/24
    • An oxidation catalyst for efficiently promoting oxidation of NO into NO2 even in a low temperature range is provided, and an exhaust gas purification system and an exhaust gas purification method for efficiently removing nitrogen oxides or particulate matters even in a low temperature range are provided. As an oxidation catalyst comprising platinum and palladium as catalytically active components for promoting oxidation of nitrogen monoxide into nitrogen dioxide, the oxidation catalyst comprises 1 to 55 mass% of the palladium relative to 100 mass% of the platinum. The catalytically active components are supported on a refractory inorganic oxide to form a catalytically active component-supported inorganic oxide which is further supported on a three-dimensional structure. The refractory inorganic oxide is at least one selected from the group consisting of activated alumina, alumina-silica, zirconia, titania, and zeolite. The three-dimensional structure is a honeycomb structure. An exhaust gas purification system comprises the oxidation catalyst in an exhaust gas passage of an internal combustion engine. The exhaust gas purification system comprises a reducing agent supplying device installed in rear of the oxidation catalyst of the exhaust gas passage to supply a reducing agent, and an NOx reduction catalyst installed in rear of the reducing agent supplying device of the exhaust gas passage. The exhaust gas purification system further comprises at least one selected from the group consisting of a diesel particulate filter, an agent for suppressing slip of a reducing agent, a catalyst for hydrolyzing urea, and another oxidation catalyst installed in rear of the oxidation catalyst. Further, the reducing agent is one selected from a group consisting of urea, ammonia, diesel, dimethyl ether, methanol, ethanol and propanol.
    • 提供了即使在低温范围内有效地促进NO氧化成NO2的氧化催化剂,也提供了即使在低温范围内有效地除去氮氧化物或微粒物质的废气净化系统和排气净化方法。 作为用于促进一氧化氮氧化为二氧化氮的催化活性成分的铂和钯的氧化催化剂,相对于铂的100质量%,氧化催化剂含有1〜55质量%的钯。 将催化活性组分负载在耐火无机氧化物上以形成进一步负载在三维结构上的催化活性组分负载的无机氧化物。 耐火无机氧化物是选自活性氧化铝,氧化铝 - 二氧化硅,氧化锆,二氧化钛和沸石中的至少一种。 三维结构是蜂窝结构。 废气净化系统包括在内燃机的排气通道中的氧化催化剂。 废气净化系统包括安装在废气通道的氧化催化剂的后面以供给还原剂的还原剂供应装置,以及安装在废气通道的还原剂供应装置后面的NOx还原催化剂。 排气净化系统还包括选自柴油微粒过滤器,抑制还原剂滑动剂,尿素水解催化剂和安装在氧化催化剂后方的另一氧化催化剂中的至少一种。 此外,还原剂是选自尿素,氨,柴油,二甲醚,甲醇,乙醇和丙醇中的一种。