-
公开(公告)号：US5591417A
公开(公告)日：1997-01-07
申请号：US184536
申请日：1994-01-21
IPC分类号： B01D53/04 , B01D53/48 , B01D53/50 , B01D53/52 , B01D53/86 , C01B17/04 , B01D53/46 , B01D53/81 , B01D53/96
CPC分类号： B01D53/04 , B01D53/485 , B01D53/508 , B01D53/52 , B01D53/523 , B01D53/8609 , B01D53/8637 , C01B17/0408 , C01B17/0456 , C01B17/0473 , B01D2253/104 , B01D2257/302 , B01D2259/403 , B01D2259/41
摘要： Removing sulfur oxide, carbon monoxide and nitrogen oxide in a flue gas stream by combusting fuel in the combustor with a reduced amount of oxygen to convert all sulfur-containing species in the flue gas stream to sulfur oxide, and to partially convert carbon monoxide therein to carbon dioxide, thus forming a sulfur oxide enriched gas stream having between at least about 500 ppm carbon monoxide and a consequential reduced amount of nitrogen oxide. The sulfur oxide enriched gas stream is contacted with a solid adsorbent bed for adsorbing the sulfur oxides in the form of inorganic sulfates and/or sulfur oxides. The solid adsorbent contains a catalytic oxidation promoter for oxidizing the carbon monoxide gas stream to carbon dioxide, thus forming a sulfur oxide and carbon monoxide depleted stream with the consequential reduced amount of nitrogen oxide for disposal. The adsorbent bed is then contacted with a reducing gas stream for regenerating the adsorbent bed to form a hydrogen sulfide and/or sulfur dioxide bearing stream.
摘要翻译： 通过在燃烧器中燃烧燃料中的氧气来减少烟道气中的硫氧化物，一氧化碳和氮氧化物，以将烟道气中的所有含硫物质转化为硫氧化物，并将其中的一氧化碳部分转化为 从而形成富含硫氧化物的气流，其具有至少约500ppm的一氧化碳和随之减少的氮氧化物的量。 富含硫氧化物的气流与固体吸附剂床接触，以吸附无机硫酸盐和/或硫氧化物形式的硫氧化物。 固体吸附剂含有用于将一氧化碳气流氧化成二氧化碳的催化氧化促进剂，从而形成硫氧化物和一氧化碳贫化物流，从而减少氮氧化物的用量以便处置。 然后将吸附床与还原气流接触，以再生吸附剂床，以形成含硫化氢和/或含二氧化硫的流。
-
公开(公告)号：US5458861A
公开(公告)日：1995-10-17
申请号：US184708
申请日：1994-01-21
IPC分类号： B01D53/04 , B01D53/48 , B01D53/50 , B01D53/52 , B01D53/77 , B01D53/86 , C01B17/04 , C10L3/10 , B01J8/00
CPC分类号： B01D53/485 , B01D53/04 , B01D53/508 , B01D53/52 , B01D53/523 , B01D53/8609 , B01D53/8637 , C01B17/0408 , C01B17/0456 , C01B17/0473 , B01D2253/104 , B01D2257/302 , B01D2259/403 , B01D2259/41
摘要： A multi-bed process of removing sulfur oxides and/or other combustible sulfur-containing compounds from a gas stream including combusting the other combustible sulfur-compounds when present in the gas stream with air or oxygen to convert such sulfur-containing compounds to sulfur oxide and form a sulfur oxide enriched gas stream. The sulfur oxide enriched gas stream is contacted with first and second serially connected solid adsorbent beds for adsorbing the sulfur oxides in the form of inorganic sulfates and/or sulfur oxides. A third adsorbent bed is contacted with a reducing gas stream to regenerate the bed by reducing the retained inorganic sulfates and/or sulfur oxides to hydrogen sulfide and/or sulfur dioxide, to thereby form a hydrogen sulfide and/or sulfur dioxide bearing stream. The feeds to each of the beds are realigned to place the second and third beds in series with the sulfur oxide and/or sulfur dioxide enriched stream being fed to the second bed and to place the first bed in a regenerative mode. Thereafter, the foregoing steps are repeated whereby each of the three beds are sequentially placed in an initial bed mode in the series, a regenerative mode, and a second bed mode in the series.
摘要翻译： 一种从气流中除去硫氧化物和/或其它可燃含硫化合物的多床方法，包括当气流与空气或氧气存在时燃烧其它可燃硫化合物，以将这种含硫化合物转化成硫氧化物 并形成富含硫氧化物的气流。 富含硫氧化物的气流与第一和第二串联连接的固体吸附剂床接触，以吸附无机硫酸盐和/或硫氧化物形式的硫氧化物。 通过将保留的无机硫酸盐和/或硫氧化物还原成硫化氢和/或二氧化硫，第三吸附剂床与还原气流接触以再生床，从而形成含硫化氢和/或二氧化硫的物流。 将每个床的进料重新对准以将第二和第三床与加入到第二床中的硫氧化物和/或二氧化硫浓缩物流串联并将第一床置于再生模式。 此后，重复上述步骤，其中三个床中的每一个顺序地以串联的初始床模式，串联的再生模式和第二床模式放置。
-
公开(公告)号：US5268089A
公开(公告)日：1993-12-07
申请号：US903406
申请日：1992-06-24
申请人： Amos A. Avidan , Mark F. Mathias , Raghu K. Menon , Joseph F. Sodomin, III , Scott A. Stevenson , Gerald J. Teitman
发明人： Amos A. Avidan , Mark F. Mathias , Raghu K. Menon , Joseph F. Sodomin, III , Scott A. Stevenson , Gerald J. Teitman
IPC分类号： B01D53/94 , B01D53/86 , B01D53/96 , B01J8/24 , B01J8/26 , B01J38/12 , B01J38/36 , C10G11/18 , C10G11/22 , B01J29/38 , C10G11/05
CPC分类号： B01J38/36 , C10G11/182 , C10G11/185
摘要： Oxides of nitrogen (NO.sub.x) emissions from an FCC regenerator are reduced by forcing the regenerator to operate between full and partial CO burn mode. Operating with less than 1 mole % O2 and up to 1 or 2% CO in the flue gas creates conditions which oxidize nitrogen compounds in coke on spent catalyst to NOx, and simultaneously convert NOx in the regenerator to nitrogen. A downstream CO boiler can burn this low CO flue gas without producing large amounts of NOx. Most NOx emissions can be eliminated. An apparatus, with the regenerator air:coke ratio controlled by both CO and O2 analyzers monitoring regenerator flue gas, is also disclosed.
-
公开(公告)号：US06610264B1
公开(公告)日：2003-08-26
申请号：US08435920
申请日：1995-05-05
IPC分类号： B01D5348
CPC分类号： B01D53/523 , B01D53/04 , B01D53/485 , B01D53/508 , B01D53/52 , B01D53/8609 , B01D53/8637 , B01D2253/10 , B01D2253/112 , B01D2253/306 , B01D2253/342 , B01D2253/3425 , B01D2257/30 , B01D2257/302 , B01D2257/304 , B01D2259/40092 , C01B17/0408 , C01B17/0456 , C01B17/0473
摘要： A process and system is disclosed for removing sulfur from tail-gas emitted from a Claus sulfur recovery process. First, the tail-gas is oxidized so as to convert sulfur therein to sulfur oxides. Oxidized tail-gas is directed into an absorber where a solid absorbent absorbs substantially all the sulfur oxides thereon. After allowing sufficient time for a desired amount of sulfur oxides to be absorbed, absorption is ceased. Next, the solid absorbent containing the absorbed sulfur oxides is contacted with a reducing gas so as to release an off gas containing hydrogen sulfide and sulfur dioxide. Upon releasing sulfur from the solid absorbent, the solid absorbent is regenerated and redirected into the absorber. Sulfur in the off gas emitted by regeneration is concentrated to an extent sufficient for use within a Claus sulfur recovery process for conversion to elemental sulfur. By combining this process with a Claus sulfur recovery process, sulfur dioxide emissions can be reduced to less than about two parts per million.
摘要翻译： 公开了一种从克劳斯硫回收方法排放的尾气中除去硫的方法和系统。 首先，尾气被氧化以便将硫转化为硫氧化物。 将氧化尾气引入吸收器中，其中固体吸收剂基本上吸收其上的所有硫氧化物。 在允许足够的时间吸收所需量的硫氧化物之后，停止吸收。 接下来，将含有吸收的硫氧化物的固体吸收剂与还原气体接触，以释放含有硫化氢和二氧化硫的废气。 从固体吸收剂中释放出硫后，固体吸收剂被再生并重定向到吸收体中。 通过再生发出的废气中的硫浓缩至足以在克劳斯硫回收过程中用于转化成元素硫的程度。 通过将该方法与克劳斯硫回收方法相结合，可将二氧化硫排放量减少至少于百万分之二。
-
公开(公告)号：US5547648A
公开(公告)日：1996-08-20
申请号：US435914
申请日：1995-05-05
IPC分类号： B01D53/04 , B01D53/48 , B01D53/50 , B01D53/52 , B01D53/86 , C01B17/04 , B01D53/46 , B01D53/81 , B01D53/96
CPC分类号： B01D53/12 , B01D53/04 , B01D53/485 , B01D53/508 , B01D53/52 , B01D53/523 , B01D53/8609 , B01D53/8637 , C01B17/0408 , C01B17/0456 , C01B17/0473 , B01D2257/302 , B01D2257/404 , B01D2257/502
摘要： Removing sulfur oxide and carbon monoxide in a flue gas stream by combusting fuel in the combustor with a reduced amount of oxygen to partially convert carbon monoxide therein to carbon dioxide and sufficient to convert all sulfur-containing species in the flue gas stream to sulfur oxide and thus form a sulfur oxide enriched gas stream having between at least about 500 ppm carbon monoxide. The sulfur oxide enriched gas stream is contacted with a solid adsorbent bed for adsorbing the sulfur oxides in the form of inorganic sulfates and/or sulfur oxides. The solid adsorbent contains a catalytic oxidation promoter for oxidizing the carbon monoxide gas stream to carbon dioxide, thus forming a sulfur oxide and carbon monoxide depleted stream for disposal. The adsorbent bed is then contacted with a reducing gas stream for regenerating the adsorbent bed to form a hydrogen sulfide and/or sulfur dioxide bearing stream.
摘要翻译： 通过在燃烧器中燃烧燃料中的燃料以减少氧气量以将其中的一氧化碳部分地转化为二氧化碳并足以将烟道气中的所有含硫物质转化成硫氧化物和在烟道气流中除去硫化氢和一氧化碳， 从而形成富含硫氧化物的气流，其具有至少约500ppm的一氧化碳。 富含硫氧化物的气流与固体吸附剂床接触，以吸附无机硫酸盐和/或硫氧化物形式的硫氧化物。 固体吸附剂含有用于将一氧化碳气流氧化成二氧化碳的催化氧化促进剂，从而形成硫氧化物和一氧化碳贫化物流以便处置。 然后将吸附床与还原气流接触，以再生吸附剂床，以形成含硫化氢和/或含二氧化硫的流。
-
公开(公告)号：US5229091A
公开(公告)日：1993-07-20
申请号：US868432
申请日：1992-04-15
CPC分类号： B01D53/8637 , B01D53/485 , B01D53/508 , B01D53/52 , B01D53/523 , B01D53/8609 , C01B17/0408 , C01B17/0456 , C01B17/0473
摘要： A process is disclosed for removing sulfur from tail-gas emitted from a Claus sulfur recovery process. First, the tail-gas is oxidized so as to convert sulfur therein to sulfur oxides. Oxidized tail-gas is directed into an absorber where a solid absorbent absorbs substantially all the sulfur oxides thereon. After allowing sufficient time for a desired amount of sulfur oxides to be absorbed, absorption is ceased. Next, the solid absorbent containing the absorbed sulfur oxides is contacted with a reducing gas so as to release an off gas containing hydrogen sulfide and sulfur dioxide. Upon releasing sulfur from the solid absorbent, the solid absorbent is regenerated and redirected into the absorber. Sulfur in the off gas emitted by regeneration is concentrated to an extent sufficient for use within a Claus sulfur recovery process for conversion to elemental sulfur. By combining this process with a Claus sulfur recovery process, sulfur dioxide emissions can be reduced to less than about two parts per million.
摘要翻译： 公开了从克劳斯硫回收过程中排出的尾气中除去硫的方法。 首先，尾气被氧化，以便将硫转化为硫氧化物。 将氧化尾气引入吸收器中，其中固体吸收剂基本上吸收其上的所有硫氧化物。 在允许足够的时间吸收所需量的硫氧化物之后，停止吸收。 接下来，将含有吸收的硫氧化物的固体吸收剂与还原气体接触，以释放含有硫化氢和二氧化硫的废气。 从固体吸收剂中释放出硫后，固体吸收剂被再生并重定向到吸收体中。 通过再生发出的废气中的硫浓缩至足以在克劳斯硫回收过程中用于转化成元素硫的程度。 通过将该方法与克劳斯硫回收方法相结合，可将二氧化硫排放量减少至少于百万分之二。
-
-
-
-
-
搜索结果
6 条记录 (耗时 0.013 秒)
