公开(公告)号：US06472577B1

公开(公告)日：2002-10-29

申请号：US09458854

申请日：1999-12-10

申请人： Joseph E. Zimmermann ,  Paul R. Cottrell ,  Michael J. Vetter

发明人： Joseph E. Zimmermann ,  Paul R. Cottrell ,  Michael J. Vetter

IPC分类号： C07C5333

CPC分类号： C07C5/321

摘要： A method increases the feed throughput for a process of dehydrogenating light hydrocarbons without loss of conversion or selectivity by increasing the catalyst volume in only the final reactor of at least three reaction zones. The catalyst volume of the final reactor may be increased relative to the other reactors by extending the inner and outer screens that define a radial flow bed therein. Maintaining a low LHSV by increasing the catalyst volume in only the final reactor greatly reduces the expense of improving the capacity and yield of such a process. This method provides the most benefit to moving bed reactor systems since modifications are limited to the last reactor. A further benefit is derived from the simplified method of raising only a section of the last reactor to increase the catalyst volume.

摘要翻译： 一种方法通过仅在至少三个反应区的最终反应器中增加催化剂体积来增加轻烃脱氢过程而不损失转化率或选择性的进料通量。 最终反应器的催化剂体积可以相对于其它反应器通过在其中限定径向流动床的内部和外部筛网延伸来增加。 通过仅在最终反应器中增加催化剂体积来维持低的LHSV大大降低了提高这种方法的能力和产率的费用。 这种方法为移动床反应器系统提供了最大的益处，因为修改限于最后一个反应器。 进一步的益处来自于仅提高最后一个反应器的一部分以增加催化剂体积的简化方法。

公开(公告)号：US06395664B1

公开(公告)日：2002-05-28

申请号：US09244725

申请日：1999-02-05

申请人： Kerry O. Boehner ,  Karl Z. Steigleder ,  Veronica Marie Godfrey ,  Paul R. Cottrell ,  Earl S. Lemberger

发明人： Kerry O. Boehner ,  Karl Z. Steigleder ,  Veronica Marie Godfrey ,  Paul R. Cottrell ,  Earl S. Lemberger

IPC分类号： B01J3812

CPC分类号： B01J29/061 ,  B01J27/16 ,  B01J29/40 ,  B01J29/405 ,  B01J29/65 ,  B01J29/70 ,  B01J29/7034 ,  B01J29/90 ,  B01J37/0009 ,  B01J38/12 ,  B01J38/60 ,  B01J38/66 ,  B01J2229/26 ,  B01J2229/36 ,  B01J2229/40 ,  B01J2229/42

摘要： This invention relates to a process for reactivating a dehydrocyclodimerization catalyst. Dehydrocyclodimerization catalysts which contain an aluminum phosphate binder can be deactivated when they are exposed to hydrogen at temperatures above 500° C. The instant process restores substantially all of the catalyst's lost activity. The process involves treating the catalyst with a fluid comprising water and drying the catalyst. The process is employed particularly advantageously in combination with coke removal for reactivating catalysts that contain coke deposits and that have also been hydrogen deactivated. This invention also relates to a method of producing a dehydrocyclodimerization catalyst that is resistant to hydrogen deactivation.

摘要翻译： 本发明涉及一种使脱氢环二聚化催化剂再活化的方法。 含有磷酸铝粘合剂的脱氢环化二聚催化剂在高于500℃的温度下暴露于氢气时可以失活。本工艺基本恢复所有催化剂的失活活性。 该方法包括用包含水的流体处理催化剂并干燥催化剂。 该方法特别有利地结合焦炭去除以再活化含有焦炭沉积物的催化剂并且还被氢去活化。 本发明还涉及一种耐氢失活的脱氢环化二聚催化剂的制备方法。

公开(公告)号：US06225515B1

公开(公告)日：2001-05-01

申请号：US09359629

申请日：1999-07-22

申请人： Paul R. Cottrell

发明人： Paul R. Cottrell

IPC分类号： C07C508

CPC分类号： C07C7/167 ,  C07C11/12 ,  C07C11/167

摘要： A process for the selective hydrogenation of trace quantities of acetylene compounds contained in a stream of diolefins to achieve extended on-stream performance by contacting an off-line selective hydrogenation reaction zone containing selective catalyst with hydrogen and a polymer solvent.

摘要翻译： 通过使含有选择性催化剂的离线选择性氢化反应区域与氢气和聚合物溶剂接触来选择氢化二烯烃流中痕量的乙炔化合物以实现延长的流动性能。

公开(公告)号：US06218589B1

公开(公告)日：2001-04-17

申请号：US09483332

申请日：2000-01-14

申请人： Paul R. Cottrell

发明人： Paul R. Cottrell

IPC分类号： C07C7167

CPC分类号： C07C11/06 ,  C07C5/3337 ,  C07C7/163 ,  C07C2523/42 ,  C07C2523/44

摘要： A method for improving the operation of a propane-propylene splitter in a process for the dehydrogenation of propane wherein the propane is dehydrogenated to produce a stream containing propylene and trace quantities of methyl acetylene and propadiene compounds and which stream is selectively hydrogenated to selectively saturate at least a majority of the trace quantities of methyl acetylene and propadiene compounds. The resulting effluent from the selective hydrogenation zone is fractionated in a propane-propylene splitter to produce a high-purity propylene product stream, an unconverted propane stream which is introduced to the dehydrogenation zone and a small slip stream or side-cut containing methyl acetylene and propadiene compounds which is introduced into the selective hydrogenation zone.

摘要翻译： 在丙烷脱氢方法中改进丙烷 - 丙烯分离器操作的方法，其中丙烷被脱氢以产生含有丙烯和痕量甲基乙炔和丙二烯化合物的物流，并且该物流被选择性氢化以选择性饱和 至少大部分痕量的甲基乙炔和丙二烯化合物。 将所得的来自选择性加氢区的流出物在丙烷 - 丙烯分离器中分馏，以产生高纯度丙烯产物流，将未转化的丙烷料流引入脱氢区和含有甲基乙炔的小滑流或侧馏分， 被引入选择性氢化区的丙二烯化合物。

公开(公告)号：US5847230A

公开(公告)日：1998-12-08

申请号：US859299

申请日：1997-05-20

申请人： Paul R. Cottrell ,  Ricardo Castillo

发明人： Paul R. Cottrell ,  Ricardo Castillo

IPC分类号： C07C41/06 ,  C07C41/00

CPC分类号： C07C41/06

摘要： In an etherification process that uses an FCC effluent as a source of isoolefins, the buildup of nitrites in an alcohol-containing stream that is recycled to the etherification zone is prevented by dragging at least a portion of a water-containing stream produced by a water washing of the FCC effluent and returning the water-containing stream to the FCC gas concentration zone. As a result, the etherification catalyst deactivation rate is reduced and without increasing the net amount of fresh water employed by the process combination.

摘要翻译： 在使用FCC流出物作为异烯烃来源的醚化方法中，通过拖曳至少一部分由水产生的含水流来防止亚硝酸盐在再循环到醚化区的含醇流中的积累 洗涤FCC流出物并将含水流返回至FCC气体浓度区。 结果，醚化催化剂失活速率降低，并且不增加工艺组合使用的净水量。

公开(公告)号：US5672772A

公开(公告)日：1997-09-30

申请号：US630288

申请日：1996-04-10

申请人： Stanley J. Frey ,  Paul R. Cottrell ,  David A. Hamm

发明人： Stanley J. Frey ,  Paul R. Cottrell ,  David A. Hamm

IPC分类号： C07C41/06 ,  C07C41/00

CPC分类号： C07C41/06

摘要： A process is disclosed for improving catalyst performance and yields in the manufacture of motor gasoline components. More particularly the process is directed to the removal of trace amounts of acetonitrile or acetone or propionitrile from a hydrocarbon feedstock such as a C.sub.4 -C.sub.6 product fraction from a fluid catalytic cracking unit, which may be used subsequently in an etherification process for the production of ethers such as MTBE and TAME. The hydrocarbon feedstock is passed to a water wash zone for the removal of the trace amounts of acetonitrile or acetone or propionitrile and the spent water comprising the nitriles is contacted with a nitrile-lean stream to regenerate the wash water. A portion of the spent water stream is withdrawn to reduce the nitrile level in the nitrile-lean water stream. The combined water wash, regeneration, and water recycle steps provide protection for the etherification zone catalyst with a significantly reduced requirement for wash water and spent wash water disposal.

摘要翻译： 公开了一种用于改善汽油汽油组分制造中的催化剂性能和产率的方法。 更具体地，该方法涉及从烃原料例如来自流化催化裂化装置的C4-C6产物级分除去痕量的乙腈或丙酮或丙腈，其可以随后在醚化方法中用于生产 醚类如MTBE和TAME。 将烃原料通入水洗区，以除去痕量的乙腈或丙酮或丙腈，并将包含腈的废水与富含腈的物流接触以再生洗涤水。 一部分废水流被抽出以降低腈水流中的腈水平。 组合的水洗，再生和水循环步骤为醚化区催化剂提供了保护，显着降低了对洗涤水和废洗水处理的需求。

公开(公告)号：US5352848A

公开(公告)日：1994-10-04

申请号：US997830

申请日：1992-12-29

申请人： Paul R. Cottrell

发明人： Paul R. Cottrell

IPC分类号： C07C41/34 ,  C07C41/44 ,  C07C41/04

CPC分类号： C07C41/44 ,  C07C41/34 ,  Y10S203/06

摘要： In an etherification process that uses an FCC effluent as a source of isoolefins, the buildup of nitriles in an alcohol-containing stream that is recycled to the etherification zone is prevented by dragging at least a portion of the methanol-containing stream to the FCC reaction zone. As a result, the etherification catalyst deactivation rate is reduced.

摘要翻译： 在使用FCC流出物作为异烯烃来源的醚化方法中，通过将至少一部分含甲醇的物流拖入FCC反应来防止再循环到醚化区的含醇流中的腈的积累 区。 结果，醚化催化剂失活速率降低。