-
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。
-
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。
-
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。
-
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。
-
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。
-
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。
-
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。
-
公开(公告)号：US5405814A
公开(公告)日：1995-04-11
申请号：US72379
申请日：1993-06-07
CPC分类号： C07C41/05 , C07C41/09 , Y02P20/584
摘要： An olefin hydration catalyst is regenerated with a non-oxidizing light gas, such as hydrogen. Light olefins, especially propylene, are converted to a mixture of alcohol(s), such as isopropanol (IPA) and ether(s), such as diisopropylether (DIPE) by contacting a feed containing the olefin with water and/or alcohol with the olefin hydration catalyst. Regeneration conditions include temperatures of from about 150.degree. C. to about 550.degree. C., pressures below about 1000 psig (6900 kPa). Lower pressures of regeneration unexpectedly demonstrated more effective catalyst regeneration through greater coke removal.
摘要翻译： 烯烃水合催化剂用非氧化性轻质气体如氢气再生。 通过使含有烯烃的进料与水和/或醇接触，将轻质烯烃，特别是丙烯转化成醇，如异丙醇（IPA）和醚，如二异丙基醚（DIPE））的混合物， 烯烃水合催化剂。 再生条件包括约150℃至约550℃的温度，低于约1000psig（6900kPa）的压力。 更低的再生压力意外地通过更大的焦炭去除表明更有效的催化剂再生。
-
9.发明授权Skeletal isomerization of n-pentenes using ZSM-35 in the presence of hydrogen 失效在氢存在下使用ZSM-35对正戊烯的骨架异构化
公开(公告)号：US5382743A
公开(公告)日：1995-01-17
申请号：US51930
申请日：1993-04-26
CPC分类号： C07C5/2775
摘要： A method for conversion of linear C5 olefins in the presence of contaminant diolefins to corresponding iso-olefins of the same carbon number which comprises contacting a linear C5 olefin-containing organic feedstock with a catalyst comprising material having the structure of ZSM-35 under skeletal isomerization conditions, wherein said conversion is carried out at temperatures between about 100.degree. and 750.degree. C., weight hourly space velocities (WHSV) based on linear C5 olefins in said feedstock between 0.1 and 500 WHSV, C5 linear olefin partial pressures between 2 and 2000 kPa, and in the presence of hydrogen added in an amount sufficient to enhance linear C5 olefin conversion activity and extend the catalyst life of the catalyst relative to operation without any hydrogen added.
摘要翻译： 在存在污染二烯烃的情况下将线性C 5烯烃转化为相同碳数的相应异烯烃的方法，其包括使含有直链C 5烯烃的有机原料与包含具有ZSM-35结构的材料的催化剂在骨架异构化 条件，其中所述转化在约100℃和750℃之间的温度下进行，基于在所述原料中的线性C 5烯烃在0.1至500WHSV之间的重小时空速（WHSV），2至2000之间的C5线性烯烃分压 kPa，并且在氢气存在下加入的量足以提高线性C5烯烃转化活性，并延长催化剂相对于操作的催化剂寿命而没有加入任何氢气。
-
公开(公告)号：US5625113A
公开(公告)日：1997-04-29
申请号：US365334
申请日：1994-12-28
CPC分类号： C07C2/58 , C07C2/62 , C07C9/16 , C07C2527/054 , C07C2529/70
摘要： A process is disclosed for alkylating an isoparaffin with an olefin comprising the steps of:(a) reacting an isoparaffin having from 4 to 8 carbon atoms with an olefin having from 2 to 12 carbon atoms in a first alkylation reaction stage at temperature from about -40.degree. C. to about 500.degree. C. and overall isoparaffin:olefin feed weight ratio of from about 1:1 to about 250:1 with a solid alkylation catalyst comprising a synthetic porous crystalline material characterized by an X-ray diffraction pattern including values substantially as set forth in Table I of the specification and having a composition comprising the molar relationshipX.sub.2 O.sub.3 :(n)YO.sub.2,wherein n is less than about 35, X is a trivalent element and Y is a tetravalent element;(b) mixing the effluent from said first alkylation stage with additional olefin to evolve an intermediate stream having an isoparaffin:olefin weight ratio of from about 2:1 to about 100:1; and(c) reacting said intermediate stream in a second alkylation stage in the absence of intermediate fractionation with a liquid acid catalyst comprising H.sub.2 SO.sub.4 to produce C.sub.5 + alkylate.
摘要翻译： 公开了一种用烯烃烷基化异链烷烃的方法，该方法包括以下步骤：（a）使第一烷基化反应阶段中具有4至8个碳原子的异链烷烃与具有2至12个碳原子的烯烃反应， 40℃至约500℃，总异构链烷烃：烯烃进料重量比为约1:1至约250:1，其中固体烷基化催化剂包含合成多孔结晶材料，其特征在于X射线衍射图包括值 基本上如说明书的表I所述，并且具有包含摩尔关系X 2 O 3：（n）YO 2的组成，其中n小于约35，X是三价元素，Y是四价元素; （b）将来自所述第一烷基化阶段的流出物与另外的烯烃混合以产生具有约2:1至约100:1的异链烷烃：烯烃重量比的中间料流; 和（c）在不与中间分级分离的第二烷基化阶段中使所述中间物流与包含H 2 SO 4的液体酸催化剂反应，以产生C5 +烷基化物。
-
-
-
-
-
-
-
-
-
搜索结果
50 条记录 (耗时 0.027 秒)
