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公开(公告)号：US5792436A
公开(公告)日：1998-08-11
申请号：US645301
申请日：1996-05-13
IPC分类号： B01D53/86 , B01D53/94 , B01J23/42 , B01J23/63 , B01J23/656 , F01N3/08 , F01N3/10 , F01N3/20 , B01D53/56 , B01D53/75
CPC分类号： F01N3/085 , B01D53/8609 , B01D53/8671 , B01D53/9431 , F01N3/0814 , F01N3/0871 , B01D2257/00 , B01D2257/302 , F01N2250/12 , F01N2330/06 , F01N2570/14 , F01N2610/03
摘要： A method of at least periodically removing from a lean gaseous stream a sorbable component such as SO.sub.x includes passing the gaseous stream through a trap member having an oxidation catalyst combined with a sorbent material at a temperature within the sorbing temperature range of the sorbent material. The sorbed component is periodically removed by introducing a combustible component into the gaseous stream and oxidizing it on the trap member to thermally desorb the sorbed component. The amount of combustible component introduced is limited to maintain the gaseous stream composition lean, but is sufficient to increase the surface temperature of at least part of the trap member to above the bulk temperature of the gaseous stream. Sorbing and desorbing periods are alternated and a composition and an apparatus to carry out the process is provided.
摘要翻译： 至少周期性地从贫气流中除去可吸收组分如SOx的方法包括使气流通过具有与吸附剂材料组合的氧化催化剂的捕集构件，所述氧化催化剂在吸附剂材料的吸附温度范围内。 通过将可燃组分引入气流中并在捕集构件上氧化吸附组分以热解吸附吸附的组分来定期除去吸附的组分。 引入的可燃组分的量被限制以保持气流组合物变稀，但足以使至少部分捕集构件的表面温度升至高于气流体积的温度。 曳引和解吸时间是交替的，并且提供了一个组合物和一个执行该过程的装置。
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2.发明授权公开(公告)号：US06319484B1
公开(公告)日：2001-11-20
申请号：US09460924
申请日：1999-12-14
IPC分类号： B01J802
CPC分类号： B01D53/0407 , B01D53/8668 , B01D53/869 , B01D53/885 , B01D2253/108 , B01D2253/308 , B01D2257/708 , B01D2259/40088 , F24C15/205
摘要： A composition for abatement of airborne pollution by volatile organic compounds (“VOCs”) has an upstream composition which contains a protective adsorbent, e.g., Y zeolite, which is effective for adsorbing large VOC molecules, e.g., toluene, and a protective oxidation catalyst intimately intermingled therewith. The downstream composition contains a second adsorbent, e.g., a silver-containing ZSM-5, which is effective for adsorbing relatively smaller VOC molecules, e.g., propylene, and a second oxidation catalyst intimately intermingled therewith. Oxidation of VOCs while they are still retained on the adsorbents is promoted at temperatures lower than would be required if the VOCs were desorbed into the gaseous phase. Apparatus is provided including a first contact member (24) coated with the upstream composition and positioned upstream of a second contact member (32) coated with the downstream composition. A heat exchanger (22) equipped with a temperature control device (40) is positioned upstream of both contact members to vary the treatment temperature between an adsorption temperature range and a higher, oxidation temperature range, both lying within an operating temperature range of from about 20 to 500° C.
摘要翻译： 用于减少挥发性有机化合物（“VOC”）的空气污染的组合物具有上游组合物，其含有保护性吸附剂，例如Y沸石，其对于吸附大的VOC分子（例如甲苯）和保护性氧化催化剂是有效的 与之混合 下游组合物包含第二吸附剂，例如含银ZSM-5，其对于吸附相对较小的VOC分子（例如丙烯）和与其紧密混合的第二氧化催化剂是有效的。 当VOCs仍然保留在吸附剂上时，VOC的氧化在低于如果VOC被解吸到气相中所需的温度下被促进。 提供了包括涂覆有上游组合物并位于涂覆有下游组合物的第二接触构件（32）的上游的第一接触构件（24）的设备。 配备有温度控制装置（40）的热交换器（22）位于两个接触构件的上游，以改变吸附温度范围和更高的氧化温度范围之间的处理温度，两者处于约 20〜500℃
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公开(公告)号：US6074973A
公开(公告)日：2000-06-13
申请号：US45582
申请日：1998-03-20
IPC分类号： B01D53/94 , B01J29/068 , B01J29/04
CPC分类号： B01D53/945 , B01J29/068 , B01D2255/1021 , B01D2255/104 , B01D2255/912 , Y02T10/22 , Y10S95/902
摘要： A catalyzed hydrocarbon trap material washcoat (20) used in a trap (10), which may be placed downstream of a conventional catalyst member (28), is useful for treating internal combustion engine (22) exhaust. Trap (10) traps hydrocarbons during cold operation periods and releases them for oxidation during higher-temperature operating periods. The material comprises palladium and silver dispersed on a high surface area metal oxide support and a zeolite material such as one or more of ZSM-5, Beta, Y, and other suitable zeolites. The trap material is efficiently made by combining in a single vessel the zeolite, the metal oxide support, and aqueous solutions of a palladium compound and a silver compound. Surprisingly, the intimate combination of silver with the palladium does not adversely affect catalytic efficiency of the palladium and provides advantageous results in enhancing catalytic oxidation of hydrocarbons desorbed from the trap (10) and coke which forms thereon.
摘要翻译： 用于捕集器（10）中的催化烃阱材料修补基面涂层（20）可用于处理内燃机（22）排气，其可以放置在常规催化剂构件（28）的下游。 陷阱（10）在冷运行期间捕获碳氢化合物，并在较高温度运行期间释放它们以进行氧化。 该材料包括分散在高表面积金属氧化物载体上的钯和银和沸石材料，例如ZSM-5，β，Y和其它合适的沸石中的一种或多种。 捕集材料通过在单个容器中组合沸石，金属氧化物载体和钯化合物和银化合物的水溶液而有效地制备。 令人惊奇的是，银与钯的紧密组合对钯的催化效率没有不利影响，并且提供了有利的结果，从而增强了从捕集器（10）和其上形成的焦炭脱附的烃的催化氧化。
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公开(公告)号：US06471924B1
公开(公告)日：2002-10-29
申请号：US08645363
申请日：1996-05-13
IPC分类号： B01D5356
CPC分类号： F01N3/0871 , B01D53/9413 , B01D53/944 , B01D53/9481 , B01D53/949 , B01D2251/208 , B01D2255/1021 , B01D2255/902 , B01D2255/91 , B01J23/58 , B01J23/63 , F01N3/0814 , F01N3/0842 , F01N13/009 , F01N2250/12 , F01N2330/06 , F01N2570/16 , F01N2610/03 , Y02T10/24
摘要： A method for reduction of NOx in a lean gaseous stream includes passing the gaseous stream at a temperature within the NOx sorbing temperature range through a catalyzed trap member having an oxidation catalyst intimately combined with a sorbent material. The sorbed NOx is periodically removed by introducing a combustible component into the gaseous stream and oxidizing it on the trap member to thermally desorb the NOx. The amount of combustible component introduced is limited to maintain the gaseous stream bulk composition lean and to avoid increasing the bulk temperature of the gaseous stream to a temperature which is too high for effective lean NOx abatement treatment. A suitable NOx abatement catalyst is used to reduce the desorbed NOx. Sorbing (trapping) and desorbing periods are alternated, usually in response to the temperature of the gaseous stream, and an apparatus to carry out the process is provided.
摘要翻译： 用于还原贫气流中的NOx的方法包括使气流在NOx吸附温度范围内的温度下通过具有与吸附剂材料紧密结合的氧化催化剂的催化捕集构件。 通过将可燃组分引入气流中并在捕集构件上氧化吸附的NOx以热解吸NOx，周期性地除去吸附的NOx。 引入的可燃组分的量被限制以保持气流体组合物变稀，并且避免将气流的体积温度升高到对于有效的贫NOx排放处理来说太高的温度。 使用合适的NOx减排催化剂来减少脱附的NOx。 吸附（捕集）和解吸时间通常是响应于气流的温度而交替的，并且提供了一种执行该过程的装置。
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公开(公告)号：US5874057A
公开(公告)日：1999-02-23
申请号：US500657
申请日：1995-07-12
IPC分类号： B01D53/86 , B01D53/94 , B01J23/58 , B01J23/63 , B01J23/648 , B01J23/652 , B01D53/56
CPC分类号： B01D53/9422 , B01J23/58 , B01J23/63 , B01D2255/102 , B01D2255/202 , B01D2255/204 , B01D2255/902 , B01D2255/91 , F01N2570/16
摘要： A NO.sub.x abatement composition comprises a NO.sub.x abatement catalyst and a NO.sub.x sorbent material which are dispersed in proximity to, but segregated from, each other on a common refractory carrier member (10). The NO.sub.x sorbent material comprises a basic oxygenated metal compound and optionally further comprises ceria. The NO.sub.x abatement catalyst contains a catalytic metal component including a platinum metal catalytic component. The catalytic metal component is segregated from the NO.sub.x sorbent material, which may be one or more of metal oxides, metal carbonates, metal hydroxides and mixed metal oxides. At least the catalytic metal component and the NO.sub.x sorbent material must be on, or comprise separate, particles; the particles may either be admixed or may be disposed in separate layers (20a, 20b) on the carrier member (10). A NO.sub.x abatement method employs the composition and includes periodically adjusting the gas being treated between lean and stoichiometric/rich operating cycles.
摘要翻译： NOx消除组合物包括在普通耐火材料承载构件（10）上分散在彼此附近但彼此分离的NOx消除催化剂和NOx吸附剂材料。 NOx吸附剂材料包含碱性氧化金属化合物，并且任选地还包含二氧化铈。 NOx消除催化剂含有包含铂金属催化组分的催化金属成分。 催化金属组分与NO x吸附剂材料分离，其可以是金属氧化物，金属碳酸盐，金属氢氧化物和混合金属氧化物中的一种或多种。 至少催化金属组分和NOx吸附剂材料必须在或包含分开的颗粒; 可以将颗粒混合或者可以设置在载体构件（10）上的分开的层（20a，20b）中。 NOx减排方法采用该组合物并且包括周期性地调节在稀薄和理论空燃比/丰富的操作循环之间被处理的气体。
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公开(公告)号：US6080377A
公开(公告)日：2000-06-27
申请号：US430065
申请日：1995-04-27
CPC分类号： B01J29/44 , B01D53/9418 , B01D2251/208 , B01D2255/1021 , B01D2255/1026 , B01D2255/502 , B01D2255/504 , B01D2255/912 , Y02C20/10
摘要： A method for reducing gaseous nitrogen oxides present in a gas stream by reaction with a reductant species is practiced by flowing the gas stream under lean NO.sub.X -reducing conditions in contact with a catalytic material containing a catalytically effective amount of a catalytic species, e.g., a platinum group metal, and a reductant storage material, e.g., a zeolite, effective for storing reductant species for reaction with NO.sub.X, and providing an intermittent supply of the reductant to the gas stream. The catalytic material may be prepared in any manner, but one method is to incorporate a catalytically effective amount of the platinum into a template-bearing molecular sieve material, preferably ZSM-5 zeolite, to hinder the platinum from being incorporated into the pores of the molecular sieve material, and then calcining the molecular sieve material, whereby the template is removed from the molecular sieve material after the platinum is incorporated therein. Another method is to add a blocking agent to the molecular sieve material, then incorporate the platinum therein, and then calcine the material to remove the blocking agent. The catalytic material may contain less than about two percent by weight of zeolite plus platinum, e.g., less than about 0.5%, or from about 0.025% to 0.1% or 0.2% platinum.
摘要翻译： 通过与还原剂物质反应来还原存在于气流中的气态氮氧化物的方法是通过在贫NOX还原条件下与含有催化有效量的催化物质（例如， 铂族金属和还原剂储存材料，例如有效地存储用于与NOX反应的还原剂物质的沸石，以及向气流中间歇地供应还原剂。 催化材料可以以任何方式制备，但是一种方法是将催化有效量的铂掺入含模板的分子筛材料，优选ZSM-5沸石中，以阻止铂被引入到 分子筛材料，然后煅烧分子筛材料，由此在引入铂后，从分子筛材料中除去模板。 另一种方法是向分子筛材料中加入封闭剂，然后在其中加入铂，然后煅烧该材料以除去封闭剂。 催化材料可以含有小于约2重量％的沸石加铂，例如小于约0.5％，或约0.025％至0.1％或0.2％的铂。
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7.发明授权
公开(公告)号：US5968861A
公开(公告)日：1999-10-19
申请号：US22724
申请日：1998-02-12
IPC分类号： B01D53/02 , B01D53/86 , B01D53/94 , B01J29/072 , B01J29/46
CPC分类号： B01J29/46 , B01D53/9418 , B01J29/072 , B01D2251/208 , B01D2255/20738 , B01D2255/20746 , B01D2255/20761 , B01D2255/504
摘要： A catalytic material useful for the abatement of NO.sub.x in a lean environment containing a zeolite material having incorporated therein copper, cobalt and iron as catalytically active species. The catalytically active metals are preferably incorporated into the zeolite by ion exchange and precipitation. The catalytic material may typically contain from about 2.0 to about 8.0 percent copper, from about 1.0 to about 4.0 percent iron and from about 0.25 to about 4.0 percent cobalt by weight of the catalytic material, i.e., by weight of the zeolite material plus the catalytic metals incorporated therein. Optionally, the catalytic material may be admixed with a binder and applied as an adherent coating onto a carrier to be placed in a gas stream containing the nitrogen oxides.
摘要翻译： 一种催化材料，用于在含有其中掺入有铜，钴和铁作为催化活性物质的沸石材料的稀薄环境中减少NOx。 催化活性金属优选通过离子交换和沉淀引入到沸石中。 催化材料通常可以含有按重量计的催化材料的约2.0至约8.0％的铜，约1.0至约4.0％的铁和约0.25至约4.0％的钴，即以沸石材料的重量加催化剂 并入其中的金属。 任选地，催化材料可以与粘合剂混合并作为粘附涂层施加到载体上以放置在含有氮氧化物的气流中。
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8.发明授权
公开(公告)号：US5776423A
公开(公告)日：1998-07-07
申请号：US699676
申请日：1996-08-15
CPC分类号： B01J29/46 , B01D53/9418 , B01J29/072 , B01D2251/208 , B01D2255/20738 , B01D2255/20746 , B01D2255/20761 , B01D2255/504
摘要： A catalytic material useful for the abatement of NO.sub.X in a lean environment containing a zeolite material having incorporated therein copper, cobalt and iron as catalytically active species. The catalytically active metals are preferably incorporated into the zeolite by ion exchange and precipitation. The catalytic material may typically contain from about 2.0 to about 8.0 percent copper, from about 1.0 to about 4.0 percent iron and from about 0.25 to about 4.0 percent cobalt by weight of the catalytic material, i.e., by weight of the zeolite material plus the catalytic metals incorporated therein. Optionally, the catalytic material may be admixed with a binder and applied as an adherent coating onto a carrier to be placed in a gas stream containing the nitrogen oxides.
摘要翻译： 一种催化材料，其用于在含有其中掺入有铜，钴和铁作为催化活性物质的沸石材料的稀薄环境中减少NOX。 催化活性金属优选通过离子交换和沉淀引入到沸石中。 催化材料通常可以含有按重量计的催化材料的约2.0-约8.0％的铜，约1.0-约4.0％的铁和约0.25-约4.0％的钴，即按沸石材料的重量加催化剂 并入其中的金属。 任选地，催化材料可以与粘合剂混合并作为粘附涂层施加到载体上以放置在含有氮氧化物的气流中。
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9.发明授权
公开(公告)号：US06150291A
公开(公告)日：2000-11-21
申请号：US250652
申请日：1999-02-16
CPC分类号： B01J29/44 , B01D53/9418 , B01D2251/208 , B01D2255/1021 , B01D2255/1026 , B01D2255/502 , B01D2255/504 , B01D2255/912 , Y02C20/10
摘要： A method for reducing gaseous nitrogen oxides present in a gas stream by reaction with a reductant species is practiced by flowing the gas stream under lean NO.sub.X -reducing conditions in contact with a catalytic material containing a catalytically effective amount of a catalytic species, e.g., a platinum group metal, and a reductant storage material, e.g., a zeolite, effective for storing reductant species for reaction with NO.sub.X, and providing an intermittent supply of the reductant to the gas stream. The catalytic material may be prepared in any manner, but one method is to incorporate a catalytically effective amount of the platinum into a template-bearing molecular sieve material, preferably ZSM-5, to hinder the platinum from being incorporated into the pores of the molecular sieve material, and then calcining the molecular sieve material, whereby the template is removed from the molecular sieve material after the platinum is incorporated therein. Another method is to add a blocking agent to the molecular sieve material, then incorporate the platinum therein, and then calcine the material to remove the blocking agent. The catalytic material may contain less than about two percent by weight of zeolite plus platinum, e.g., less than about 0.5%, or from about 0.025% to 0.1% or 0.2% platinum.
摘要翻译： 通过与还原剂物质反应来还原存在于气流中的气态氮氧化物的方法是通过在贫NOX还原条件下与含有催化有效量的催化物质（例如， 铂族金属和还原剂储存材料，例如有效地存储用于与NOX反应的还原剂物质的沸石，以及向气流中间歇地供应还原剂。 催化材料可以以任何方式制备，但是一种方法是将催化有效量的铂掺入含模板的分子筛材料，优选ZSM-5中，以阻止铂结合到分子的孔中 筛分材料，然后煅烧分子筛材料，由此在引入铂后，从分子筛材料中除去模板。 另一种方法是向分子筛材料中加入封闭剂，然后在其中加入铂，然后煅烧该材料以除去封闭剂。 催化材料可以含有小于约2重量％的沸石加铂，例如小于约0.5％，或约0.025％至0.1％或0.2％的铂。
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10.发明授权Method of desulfurizing a hydrocarbon gas by selective partial oxidation and adsorption 有权通过选择性部分氧化和吸附来脱硫烃气的方法公开(公告)号：US07074375B2
公开(公告)日：2006-07-11
申请号：US10308356
申请日：2002-12-03
CPC分类号： C10L3/12 , B01D53/8609 , C01B3/38 , C01B2203/0227 , C01B2203/061 , C01B2203/062 , C01B2203/066 , C01B2203/127 , C07C7/12 , C07C7/14816 , C10G25/00 , C10G27/04 , C10G2300/202 , C10G2300/207 , Y02P20/52 , C07C9/04
摘要： A hydrocarbon gas such as methane and LPG is desulfurized in the presence of oxygen and an oxidation catalyst to convert sulfur compounds in the gas to sulfur oxides. The sulfur oxides are then trapped downstream of the oxidation by an adsorbent. The amount of oxygen added to the hydrocarbon gas to promote oxidation is such that the sulfur compounds are selectively oxidized and the oxidation of the hydrocarbon gas is minimized to reduce hydrogen formation.
摘要翻译： 甲烷和LPG等烃类气体在氧气和氧化催化剂的存在下脱硫，将气体中的硫化合物转化为硫氧化物。 硫氧化物然后被吸附剂捕获在氧化下游。 添加到烃气体中以促进氧化的氧气的量使得硫化合物被选择性氧化并且烃气体的氧化被最小化以减少氢气形成。
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