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公开(公告)号：US06395951B1
公开(公告)日：2002-05-28
申请号：US09669793
申请日：2000-09-26
申请人： David A Hamm
发明人： David A Hamm
IPC分类号： C07C712
摘要： Construction and operational costs of recovering the extract or raffinate product of a simulated moving bed adsorptive separation process units are reduced by employing a dividing wall column to perform the separation. The raffinate or extract stream is passed into the column at an intermediate point on the first side of the dividing wall, with the column delivering the adsorptive separation product as a sidedraw from the opposite side of the dividing wall. A stream of co-adsorbed impurity is removed as an overhead stream and desorbent is recovered as a net bottoms stream.
摘要翻译： 模拟移动床吸附分离工艺单元的萃取液或萃余液的回收利用分隔壁进行分离，降低了构成和运行成本。 萃余液或萃取物流在分隔壁第一侧的中间点处进入塔中，柱子将吸附分离产物作为从分隔壁的相反侧的侧面抽出。 作为塔顶物流除去共吸附杂质的流，并且作为净底部物流回收解吸剂。
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公开(公告)号：US07179434B1
公开(公告)日：2007-02-20
申请号：US10936086
申请日：2004-09-08
申请人： Gregory F. Maher , David A. Hamm
发明人： Gregory F. Maher , David A. Hamm
CPC分类号： C07C15/08 , C10G2400/30
摘要： Enabling a transalkylation process to handle both C10 alkylaromatics and unextracted toluene permits the following improvements to be realized. No longer extracting toluene allows a reformate-splitter column to be eliminated. The extraction unit can be moved to the overhead of a benzene column that is also closely integrated with the transalkylation unit. No longer requiring a rigorous split between C9 and C10 alkylaromatics allows a heavy aromatics column to be eliminated. Such an enabled transalkylation process requires stabilization of a transalkylation catalyst through the introduction of a metal function. These improvements result in an aromatics complex apparatus with savings on inside battery limits curve costs and an improvement on the return on investment in such a complex.
摘要翻译： 使烷基转移过程能够处理C 10 -C 20烷基芳族化合物和未萃取的甲苯允许实现以下改进。 不再提取甲苯可以消除重整分离柱。 提取单元可以移动到也与烷基转移单元紧密结合的苯塔的塔顶馏出物。 不再需要C 9和C 10烷基芳烃之间的严格分裂，可以消除重的芳族化合物塔。 这种使能的烷基转移方法需要通过引入金属官能团来稳定烷基转移催化剂。 这些改进导致了芳烃复合设备，其内部电池限制曲线成本节省，并且对这种复杂的投资回报率有所改善。
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公开(公告)号：US5569790A
公开(公告)日：1996-10-29
申请号：US237532
申请日：1994-05-03
申请人： Stanley J. Frey , Paul R. Cottrell , David A. Hamm
发明人： Stanley J. Frey , Paul R. Cottrell , David A. Hamm
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。
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公开(公告)号：US5567860A
公开(公告)日：1996-10-22
申请号：US317947
申请日：1994-10-04
CPC分类号： C07C11/02 , C07C1/20 , C07C2521/08 , C07C2527/053 , C07C2527/167 , C07C2531/08
摘要： A process for the production of R.sub.2 -isoolefins by decomposition of R.sub.1 --O-tertiary-R.sub.2 is disclosed. R.sub.1 --O-secondary-R.sub.2 that are normally present in the feed stream are selectively removed. Removal of these R.sub.1 --O-secondary-R.sub.2 lowers the R.sub.2 -normal olefin impurity and increases the yield of the product R.sub.2 -isoolefins.
摘要翻译： 公开了通过R1-O-叔-RR分解制备R2-异烯烃的方法。 通常存在于进料流中的R1-O-二级-R2被选择性地除去。 这些R1-O-二级-R2的除去降低了R2-正烯烃杂质，提高了产物R2-异烯烃的产率。
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公开(公告)号：US5258563A
公开(公告)日：1993-11-02
申请号：US897133
申请日：1992-06-11
摘要： A process is disclosed for the conversion of light aliphatic hydrocarbons such as propane into aromatic hydrocarbons and especially high purity benzene. The feed hydrocarbon is converted to aromatic hydrocarbons in a dehydrocyclodimerization zone. The product stream from the dehydrocyclodimerization zone which contains benzene, toluene, xylenes and C.sub.6 -C.sub.10 non-aromatics are separated into an overhead stream which contains the non-aromatic hydrocarbons and a small fraction of the benzene and a bottoms stream which contains the remainder of the benzene and other aromatic components. The overhead stream is then flowed to a conversion zone where the C.sub.6 -C.sub.7 non-aromatic hydrocarbons are cracked and the benzene is combined with the bottoms stream and further separated to give a high purity benzene product stream and a toluene, xylenes and C.sub.9 + product stream. The toluene, xylenes and C.sub.9 + product stream may further be separated into a toluene and xylenes product and a C.sub.9 + product stream.
摘要翻译： 公开了一种将轻质脂族烃如丙烷转化成芳烃，特别是高纯度苯的方法。 原料烃在脱氢环化二聚化区转化成芳烃。 来自含有苯，甲苯，二甲苯和C 6 -C 10非芳族化合物的脱氢环化二聚化区的产物流被分离成包含非芳族烃和一小部分苯的塔顶物流，以及含有剩余的 苯等芳香成分。 然后将塔顶物流流入转化区，其中C6-C7非芳族烃被裂解，并将苯与塔底物流混合并进一步分离，得到高纯度苯产物流和甲苯，二甲苯和C9 +产物流 。 甲苯，二甲苯和C9 +产物流可以进一步分离成甲苯和二甲苯产物和C9 +产物流。
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公开(公告)号：US4634799A
公开(公告)日：1987-01-06
申请号：US800245
申请日：1985-11-21
申请人： Edward C. Haun , David A. Hamm
发明人： Edward C. Haun , David A. Hamm
IPC分类号： C07C1/00 , C07C2/76 , C07C4/20 , C07C7/04 , C07C7/09 , C07C15/00 , C07C67/00 , C10G35/00 , C10G61/02 , C10G67/02 , C07C15/42
CPC分类号： C07C7/04 , C07C2/76 , C07C2523/08
摘要： A process flow for hydrogen-producing processes such as reforming or dehydrocyclodimerization is disclosed. A portion of a C.sub.3 or C.sub.4 feed stream is flashed to provide reflux cooling for a product recovery fractionation column. The cool overhead of this column and a second portion of the feed stream are used to cool the still uncondensed portion of the partially condensed reaction zone effluent stream prior to passage of this uncondensed material into a final low temperature separation stage. A second feature is the reboiling of a fractionation column with hot compressed gas to perform interstage cooling in the product recovery compression section.
摘要翻译： 公开了一种制氢工艺如重整或脱氢环化二聚化的工艺流程。 将C3或C4进料流的一部分闪蒸以提供用于产物回收分馏塔的回流冷却。 该塔的冷却塔顶和进料流的第二部分用于在将该未冷凝材料通入最终的低温分离阶段之前，冷却部分冷凝的反应区流出物流的未冷凝的部分。 第二个特征是使用热压缩气体再分馏分馏塔，以在产品回收压缩部分进行级间冷却。
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公开(公告)号：US07169368B1
公开(公告)日：2007-01-30
申请号：US10936129
申请日：2004-09-08
CPC分类号： C07C5/2775 , B01J2219/00006 , C07C15/02
摘要： Enabling a transalkylation process to handle both C10 alkylaromatics and unextracted toluene permits the following improvements to be realized. No longer extracting toluene allows a reformate-splitter column to be eliminated. The extraction unit can be moved to the overhead of a benzene column and integrated together with the transalkylation unit to reduce costs. No longer requiring a rigorous split between C9 and C10 alkylaromatics allows a heavy aromatics column to be eliminated. Such an enabled transalkylation process requires stabilization of a transalkylation catalyst through the introduction of a metal function. These improvements result in an aromatics complex apparatus with savings on inside battery limits curve costs and an improvement on the return on investment in such a complex.
摘要翻译： 使烷基转移过程能够处理C 10 -C 20烷基芳族化合物和未萃取的甲苯允许实现以下改进。 不再提取甲苯可以消除重整分离柱。 提取单元可以移动到苯塔的塔顶并与烷基转移单元集成在一起以降低成本。 不再需要C 9和C 10烷基芳烃之间的严格分裂，可以消除重的芳族化合物塔。 这种使能的烷基转移方法需要通过引入金属官能团来稳定烷基转移催化剂。 这些改进导致了芳烃复合设备，其内部电池限制曲线成本节省，并且对这种复杂的投资回报率有所改善。
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公开(公告)号：US06740788B1
公开(公告)日：2004-05-25
申请号：US10325212
申请日：2002-12-19
申请人： Gregory F. Maher , David A. Hamm
发明人： Gregory F. Maher , David A. Hamm
IPC分类号： C07C600
CPC分类号： C10G69/08 , C07C6/126 , C10G2300/1044 , C10G2300/4018 , C10G2400/30 , Y02P20/125 , Y02P20/52 , C07C15/08 , C07C15/04 , C07C15/06
摘要： Enabling a transalkylation process to handle both C10 alkylaromatics and unextracted toluene permits the following improvements to be realized. No longer extracting toluene allows a reformate-splitter column to be eliminated. The extraction unit can be moved to the overhead of a benzene column. No longer requiring a rigorous split between C9 and C10 alkylaromatics allows a heavy aromatics column to be eliminated. Such an enabled transalkylation process requires stabilization of a transalkylation catalyst through the introduction of a metal function. A further enhancement to the flow scheme is accomplished through the elimination of clay treaters in favor of selective olefin saturation at the exits of a reforming unit and an isomerization unit. These improvements result in an aromatics complex with savings on inside battery limits curve costs and an improvement on the return on investment in such a complex.
摘要翻译： 实施烷基转移方法来处理C10烷基芳族化合物和未萃取的甲苯允许实现以下改进。 不再提取甲苯可以消除重整分离柱。 提取单元可以移动到苯塔的塔顶。 不再需要C9和C10烷基芳族化合物之间的严格拆分，可以消除重芳烃柱。 这种使能的烷基转移方法需要通过引入金属官能团来稳定烷基转移催化剂。 通过消除粘土处理剂有利于重整单元和异构化单元的出口处的选择性烯烃饱和来实现流程图的进一步改进。 这些改进导致了芳烃复合物，节省了内部电池限制曲线成本，并改善了这种复杂的投资回报。
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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
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。
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