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公开(公告)号：US5154801A
公开(公告)日：1992-10-13
申请号：US527973
申请日：1990-05-24
CPC分类号： C07C41/05 , C07C41/06 , Y10S203/90
摘要： In the diisopropyl ether production process, the distallation step for the separation of aqueous IPA recovered from the DIPE extraction operations is modified to avoid carrying out the distillation under conditions that yield IPA-water azeotrope providing lower overall process cost. The determination has been made that the overhead and bottom streams form an aqueous IPA fractionation process operated under off-azeotrope conditions in DIPE production can be recycled, respectively, to the DIPE reactor and extractor operations. Recycling the water and IPA overhead mixture eliminates the requirement for adding fresh water to the DIPE reactor. Returning the water and IPA bottom stream to the extractor reduces the requirement for distilled water addition to the extraction step. As a consequence, a less complex and costly aqueous IPA separation process is implemented.
摘要翻译： 在二异丙醚制备方法中，从DIPE萃取操作中回收的IPA水分离的分离步骤被修改，以避免在产生IPA-水共沸物的条件下进行蒸馏，提供较低的总体工艺成本。 已经确定了在DIPE生产中在脱共沸条件下操作的塔顶馏出物和底部物流形成的水性IPA分馏方法可以分别再循环到DIPE反应器和萃取器操作中。 回收水和IPA塔顶混合物消除了向DIPE反应堆添加淡水的要求。 将水和IPA底部物流返回到萃取器中，降低了萃取步骤中除去蒸馏水的要求。 因此，实现了较不复杂和昂贵的IPA分离过程。
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公开(公告)号：US5162591A
公开(公告)日：1992-11-10
申请号：US557241
申请日：1990-07-25
摘要： A process for production of dialkyl ether by hydration and etherification of olefinic feedstock containing at least one lower alkene by contacting the olefinic feedstock and water in a catalytic reaction zone with porous solid metallosilicate acidic catalyst under olefin hydration and etherification conditions. Improvement is achieved by recovering a first fluid effluent stream from the reaction zone; splitting the first fluid effluent stream into a liquid product recovery stream and a fluid recycle stream; and passing the fluid recycle stream consisting essentially of olefin, alcohol and ether in effluent stream proportions for feeding to the reaction zone along with fresh olefinic feedstock and fresh water, wherein the amount of fluid recycle stream is sufficient to maintain a homogeneous single fluid reaction phase in the reaction zone.
摘要翻译： 在烯烃水合和醚化条件下，通过使催化反应区中的烯属原料和水与多孔固体金属硅酸盐酸性催化剂接触，通过使包含至少一种低级烯烃的烯烃原料进行水合和醚化来生产二烷基醚的方法。 通过从反应区回收第一流体流出物流来实现改善; 将第一流体流出物流分解成液体产物回收流和流体循环流; 并将基本上由烯烃，醇和醚组成的流体循环料流以流出物流的比例通过，以与新鲜的烯烃原料和淡水一起进料到反应区，其中流体循环流的量足以保持均匀的单一流体反应相 在反应区。
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公开(公告)号：US4973790A
公开(公告)日：1990-11-27
申请号：US437138
申请日：1989-11-16
CPC分类号： C10G69/126 , C07C11/02 , C07C2/12 , C07C7/12 , C07C2529/40
摘要： A process for oligomerizing C2 to C10 olefins obtained by catalytic cracking of heavy crude oil is disclosed. The olefins are oligomerized in the presence of added hydrogen over a shape selective zeolite to gasoline and distillate products. Feed pretreatment, to remove basic nitrogen compounds present in light olefin stream in refinery, with water wash or a guard bed is practiced improves catalyst life.
摘要翻译： 公开了通过重质原油的催化裂化获得的C2至C10烯烃的低聚方法。 在形成选择性沸石的情况下，在加入氢气的情况下，烯烃被低聚化成汽油和馏出物。 进料预处理，以清除精炼厂中轻质烯烃流中存在的碱性氮化合物，用水洗或保护床，可以提高催化剂的使用寿命。
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公开(公告)号：US5138102A
公开(公告)日：1992-08-11
申请号：US794634
申请日：1991-11-18
IPC分类号： C07C41/05
CPC分类号： C07C41/05 , Y02P20/582
摘要： A process for production of ether by hydration and etherification of olefinic feedstock containing at least one lower alkene by contacting the olefinic feedstock and water in a plurality of catalytic reaction zones containing porous solid metal oxide acidic olefin hydration and etherification catalyst under olefin hydration and etherification conditions. Improved operation is achieved by recovering a first effluent stream from at least one fixed bed hydration zone, splitting the first effluent stream into a product recovery stream and a plurality of recycle streams, and passing at least a portion of cooled recycle streams comprising olefin, alcohol and ether in effluent stream component proportions for quenching at least one fixed bed reaction zone to control temperature of hot effluent from a preceding reaction zone.
摘要翻译： 通过在含有多孔固体金属氧化物的酸性烯烃水合和醚化催化剂的多个催化反应区中，在烯烃水合和醚化条件下使烯属原料与水接触来水解和醚化含有至少一种低级烯烃的烯烃原料来生产乙醚的方法 。 通过从至少一个固定床水合区回收第一流出物流，将第一流出物流分解成产物回收物流和多个再循环物流，以及使包含烯烃，醇的至少一部分冷却的循环物流 和乙醚以流出物流组分比例用于淬灭至少一个固定床反应区以控制来自前一反应区的热流出物的温度。
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公开(公告)号：US5053579A
公开(公告)日：1991-10-01
申请号：US437137
申请日：1989-11-16
摘要： A process for upgrading of unstable olefins, naphthas, and dienes, such as coker naphthas, is disclosed. The olefins in the unstable naphthas are oligomerized over a shape selective zeolite to gasoline and distillate products. The dienes are catalytically converted by the same zeolite. Preferably, hydrogen is added to increase catalyst life. Feed pretreatment, to remove basic nitrogen compounds also improves catalyst life. Water washing of coker naphtha is the preferred method of removing basic nitrogen compounds.
摘要翻译： 公开了一种升级不稳定烯烃，石脑油和二烯烃如焦化石脑油的方法。 不稳定石脑油中的烯烃在形状选择性沸石上低聚成汽油和馏出物。 二烯通过相同的沸石催化转化。 优选地，加入氢以增加催化剂寿命。 进料预处理，去除碱性氮化合物也可以提高催化剂的使用寿命。 净化焦化石脑油的洗涤是去除碱性氮化合物的优选方法。
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公开(公告)号：US5986148A
公开(公告)日：1999-11-16
申请号：US101111
申请日：1993-08-02
CPC分类号： C07C41/05 , Y02P20/582
摘要： An improved process for production of diisopropyl ether by conversion of hydrocarbon feedstock containing propene, propane and C.sub.2 -- light gas components. The overall process steps include, (optionally) prefractionating fresh feedstock containing propene, propane and C.sub.2 -- light gas components to provide a reactor feedstream rich in propene; contacting the feedstock and water in a catalytic reactor with acidic catalyst under olefin hydration and etherification conditions; and recovering from the catalytic reactor a liquid reactor effluent stream containing diisopropyl ether, isopropanol, water, unreacted propene, propane, oligomer and C.sub.2 -- light gas components. DIPE product containing C.sub.6 + oligomer is recovered by separating the liquid effluent stream in a stripper column, and extracting the DIPE-rich liquid with water. An improved separation process is employed for removing water to provide DIPE liquid product substantially free of water.
摘要翻译： 通过转化含有丙烯，丙烷和C2轻质气体成分的烃原料来改进制备二异丙醚的方法。 总体工艺步骤包括（任选地）预分馏含有丙烯，丙烷和C 2-轻质气体成分的新鲜原料，以提供富含丙烯的反应器进料流; 在烯烃水合和醚化条件下，用酸性催化剂在催化反应器中使原料和水接触; 并从催化反应器中回收含有二异丙基醚，异丙醇，水，未反应的丙烯，丙烷，低聚物和C2轻质气体组分的液体反应器流出物流。 通过分离汽提塔中的液体流出物流，并用水萃取富含DIPE的液体，回收含有C6 +低聚物的DIPE产物。 采用改进的分离方法去除水以提供基本上不含水的DIPE液体产物。
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7.发明授权
公开(公告)号：US5420360A
公开(公告)日：1995-05-30
申请号：US112286
申请日：1993-08-27
IPC分类号： C07C41/06
CPC分类号： C07C41/06 , C07C41/42 , Y02P20/127
摘要： A process is disclosed for producing alkyl tertiary alkyl ether such as TAME from alkanol and hydrocarbon feedstock containing linear olefins, iso-olefins, linear alkanes and iso-alkanes such as C5 streams from FCC. The process selectively etherifies iso-olefins in a plural stage etherification zone whose linear olefin-containing effluent is treated by distillation to remove iso-alkanes, and alkanol before passing to a skeletal isomerization zone using constrained intermediate pore size zeolite catalyst such as ZSM-22, ZSM-23, or ZSM-35, which converts linear olefins to iso-olefins which are cycled for etherification. The use of distillation to remove iso-alkanes and alkanol reduces mass flow to the etherification process and minimizes skeletal isomerization catalyst poisoning by alkanol, without resort to water extraction processes which require subsequent treatment of the isomerization zone feed to remove water.
摘要翻译： 公开了一种从链烷醇生产烷基叔烷基醚如TAME的方法，以及含有直链烯烃，异烯烃，直链烷烃和异烷烃如FCC的C5流的烃原料。 该方法选择性地醚化多级醚化区中的异烯烃，其直链烯烃流出物通过蒸馏处理以除去异烷烃，和链烷醇在使用约束的中等孔径沸石催化剂如ZSM-22进入骨架异构化区之前 ，ZSM-23或ZSM-35，其将线性烯烃转化为异烯烃，其循环用于醚化。 使用蒸馏来除去异烷烃和链烷醇减少了醚化过程的质量流动，并且使骨架异构化催化剂由链烷醇中毒最小化，而不用采用需要随后处理异构化区域进料以除去水的水提取方法。
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公开(公告)号：US5324865A
公开(公告)日：1994-06-28
申请号：US20964
申请日：1993-02-22
CPC分类号： C07C41/05 , C07C41/06 , Y02P20/582
摘要： A process for production of diisopropyl ether by conversion of hydrocarbon feedstock containing propene, propane and C.sub.2 - light gas components, including the steps of: optionally, prefractionating fresh feedstock containing propene, propane and C.sub.2 - light gas components to provide a reactor feedstream rich in propene; contacting the feedstock and water in a catalytic reactor with acidic catalyst under olefin hydration and etherification conditions; and recovering from the catalytic reactor a liquid reactor effluent stream containing diisopropyl ether, isopropanol, water, unreacted propene, propane and C.sub.2 - light gas components. Improved operation is achieved by separating the liquid effluent stream in a vertical stripper column; recovering an overhead vapor stream containing propene, propane and C.sub.2 - light gas components from the stripper column; cooling the overhead vapor stream to provide a reflux stream rich in condensed propene and propane; removing the C.sub.2 - light gas components from condensed; recycling the reflux stream to an upper contact portion of the stripper column; and recovering a predominantly C3 recycle stream from the upper contact portion of the stripper column. Optionally, the C3 recycle stream may be passed to the to the prefractioning step for propene enrichment with fresh feedstock.
摘要翻译： 通过转化含有丙烯，丙烷和C2轻质气体组分的烃原料来生产二异丙醚的方法，包括以下步骤：任选地，将含有丙烯，丙烷和C2-轻质气体组分的新鲜原料预分馏，从而提供富含 丙烯 在烯烃水合和醚化条件下，用酸性催化剂在催化反应器中使原料和水接触; 并从催化反应器中回收含有二异丙基醚，异丙醇，水，未反应的丙烯，丙烷和C2-轻质气体组分的液体反应器流出物流。 通过在垂直汽提塔中分离液体流出物流来实现改进的操作; 从汽提塔回收含有丙烯，丙烷和C2轻质气体组分的塔顶蒸气流; 冷却塔顶蒸气流以提供富含缩合丙烯和丙烷的回流; 将C2轻质气体组分从冷凝中除去; 将回流流循环到汽提塔的上接触部分; 并从汽提塔的上部接触部分回收主要为C3的循环物流。 任选地，可以将C3循环流传递至用于用新鲜原料进行丙烯富集的预分馏步骤。
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公开(公告)号：US5288924A
公开(公告)日：1994-02-22
申请号：US946705
申请日：1992-09-18
CPC分类号： C07C41/05 , C07C29/04 , C07C41/06 , B01J2229/42 , B01J29/7007
摘要： A method for starting up a fixed bed propylene hydration reactor containing shape selective metallosilicate catalyst particles for the production of isopropanol and/or diisopropyl ether is disclosed comprising the following sequential steps: contacting a feedstream comprising propane with catalyst particles in a hydration reactor; then introducing a feedstream comprising isopropanol into the reactor to displace propane. Next, a feedstream comprising propylene is introduced into the reactor under etherification conditions. Finally, a feedstream is introduced in the reactor comprising water under etherification and hydration reaction conditions whereby diisopropyl ether and isopropanol are produced.
摘要翻译： 公开了一种用于启动含有用于生产异丙醇和/或二异丙醚的形状选择性金属硅酸盐催化剂颗粒的固定床丙烯水合反应器的方法，其包括以下顺序步骤：使包含丙烷的进料流与水合反应器中的催化剂颗粒接触; 然后将包含异丙醇的进料流引入反应器以置换丙烷。 接下来，在醚化条件下将包含丙烯的进料流引入反应器中。 最后，在醚化和水合反应条件下将反应器中的水引入反应器中，由此产生二异丙醚和异丙醇。
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