专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06413485B2 Ammoxidation of a mixture of ketones to acetonitrile and HCN 失效
标题翻译：酮与乙腈和HCN的混合物的氨氧化
公开(公告)号：US06413485B2
公开(公告)日：2002-07-02
申请号：US09320937
申请日：1999-05-27
申请人： Michael J. Seely , Sanjay Purushottam Godbole , Dev Dhanaraj Suresh
发明人： Michael J. Seely , Sanjay Purushottam Godbole , Dev Dhanaraj Suresh
IPC分类号： C01C302
CPC分类号： C07C253/26 , C01C3/0212 , C01C3/0225 , C07C253/24 , Y02P20/52 , C07C255/08
摘要： A process increasing the yield of both HCN and acetonitrile produced during the manufacture of acrylonitrile comprising introducing a hydrocarbon selected from the group consisting of propylene and propane, a crude ketone and/or a mixture of at least two ketones, ammonia and air, into a reaction zone containing an ammoxidation catalyst, reacting the hydrocarbon, the ketone, ammonia and oxygen over said catalyst at an elevated temperature to produce acrylonitrile, hydrogen cyanide and acetonitrile, and recovering the acrylonitrile, hydrogen cyanide and acetonitrile from the reactor.
摘要翻译：包括将选自丙烯和丙烷，粗酮和/或至少两种酮，氨和空气的混合物的烃引入到丙烯和丙烯的制备过程中产生的HCN和乙腈的产率的方法，含有氨氧化催化剂的反应区，在升高的温度下使所述催化剂上的烃，酮，氨和氧反应生成丙烯腈，氰化氢和乙腈，并从反应器回收丙烯腈，氰化氢和乙腈。

2. 发明授权

US06667020B2 Ammoxidation of a mixture of ketones to acetonitrile and HCN 失效
标题翻译：酮与乙腈和HCN的混合物的氨氧化
公开(公告)号：US06667020B2
公开(公告)日：2003-12-23
申请号：US10016703
申请日：2001-12-10
申请人： Michael J. Seely , Sanjay Purushottam Godbole , Dev Dhanaraj Suresh
发明人： Michael J. Seely , Sanjay Purushottam Godbole , Dev Dhanaraj Suresh
IPC分类号： C01C302
CPC分类号： C07C253/26 , C01C3/0212 , C01C3/0225 , C07C253/24 , Y02P20/52 , C07C255/08
摘要： A process increasing the yield of both HCN and acetonitrile produced during the manufacture of acrylonitrile comprising introducing a hydrocarbon selected from the group consisting of propylene and propane, a crude ketone and/or a mixture of at least two ketones, ammonia and air, into a reaction zone containing an ammoxidation catalyst, reacting the. hydrocarbon, the ketone, ammonia and oxygen over said catalyst at an elevated temperature to produce acrylonitrile, hydrogen cyanide and acetonitrile, and recovering the acrylonitrile, hydrogen cyanide and acetonitrile from the reactor.
摘要翻译：包括将选自丙烯和丙烷，粗酮和/或至少两种酮，氨和空气的混合物的烃引入到丙烯和丙烯的制备过程中产生的HCN和乙腈的产率的方法，反应区含有氨氧化催化剂，碳氢化合物，酮，氨和氧在所述催化剂上升高以产生丙烯腈，氰化氢和乙腈，并从反应器回收丙烯腈，氰化氢和乙腈。

3. 发明授权

US6054603A Acrylonitrile recovery process 失效
标题翻译：丙烯腈回收工艺
公开(公告)号：US6054603A
公开(公告)日：2000-04-25
申请号：US286886
申请日：1999-04-06
申请人： Sanjay Purushottam Godbole
发明人： Sanjay Purushottam Godbole
IPC分类号： C07C253/34 , C07C255/08 , C07C255/00
CPC分类号： C07C253/34
摘要： The process of the present invention comprises transporting a reactor effluent containing acrylonitrile/methacrylonitrile to a first column (quench) where the reactor effluent is cooled with a first aqueous stream, transporting the cooled effluent into an indirect contact cooler to condensed at least some of the cooled effluent to form a condensate comprising water and acrylonitrile/methacrylonitrile, transporting the remaining cooled gaseous effluent containing acrylonitrile/methacrylonitrile into a second column (absorber) where the cooled effluent is contacted with a second aqueous stream to absorb substantially all of the remaining acrylonitrile/methacrylonitrile into the second aqueous stream, transporting the second aqueous stream containing the acrylonitrile/methacrylonitrile to a first distillation column (recovery column) for separation of the crude acrylonitrile/methacrylonitrile from the second aqueous stream, and transporting the separated crude acrylonitrile/methacrylonitrile to a second distillation column (heads column) to remove at least some impurities from the crude acrylonitrile/methacrylonitrile, and transporting the partially purified acrylonitrile/methacrylonitrile to a third distillation column (product column) to further purify the acrylonitrile/methacrylonitrile, and recovering the purified acrylonitrile/methacrylonitrile, wherein the improvement comprises transporting the condensate formed in the indirect contact cooler to a decanter where the condensate is separated into an organic phase comprising acrylonitrile/methacrylonitrile, an aqueous phase and a vapor phase, and the organic phase is introduced into the recovery column without passing through the absorber column.
摘要翻译：本发明的方法包括将含有丙烯腈/甲基丙烯腈的反应器流出物输送到第一塔（骤冷），其中反应器流出物用第一含水流冷却，将冷却的流出物输送到间接接触冷却器中以冷凝至少一些将含有丙烯腈/甲基丙烯腈的剩余的冷却的气态流出物输送到第二塔（吸收器）中，其中冷却的流出物与第二含水流接触以吸收基本上所有剩余的丙烯腈/ 甲基丙烯腈转移到第二含水流中，将含有丙烯腈/甲基丙烯腈的第二含水流输送到第一蒸馏塔（回收塔），以从第二含水流中分离粗丙烯腈/甲基丙烯腈，并将分离的粗丙烯腈/甲基丙烯腈向第二蒸馏塔（头柱）除去粗丙烯腈/甲基丙烯腈中的至少一些杂质，并将部分纯化的丙烯腈/甲基丙烯腈输送到第三蒸馏塔（产物柱）以进一步纯化丙烯腈/甲基丙烯腈，并回收纯化的丙烯腈/甲基丙烯腈，其中改进包括将在间接接触冷却器中形成的冷凝物输送到滗析器，其中将冷凝物分离成包含丙烯腈/甲基丙烯腈，水相和气相的有机相，并引入有机相进入回收塔而不通过吸收塔。

4. 发明授权

US6002040A Reduced pressure drop in acrylonitrile absorber via direct contact spray heat exchange 失效
标题翻译：通过直接接触喷雾热交换降低丙烯腈吸收剂的压降
公开(公告)号：US6002040A
公开(公告)日：1999-12-14
申请号：US78789
申请日：1998-05-14
申请人： Jeffrey Earle Rinker , Paul Trigg Wachtendorf , Vincent Astor Little, III , Sanjay Purushottam Godbole
发明人： Jeffrey Earle Rinker , Paul Trigg Wachtendorf , Vincent Astor Little, III , Sanjay Purushottam Godbole
IPC分类号： C07C253/26 , C07B61/00 , C07C55/08 , C07C253/34 , C07C255/08 , C07C255/00
CPC分类号： C07C253/34 , C07C253/26
摘要： A process for manufacturing acrylonitrile comprising reacting propylene, ammonia and oxygen in a reactor zone in the presence of a catalyst to produce a reactor effluent containing crude acrylonitrile, transferring the reactor effluent containing crude acrylonitrile to a quench column wherein the reactor effluent containing crude acrylonitrile is contacted with an aqueous stream to cool the reactor effluent, transferring the cooled reactor effluent containing the crude acrylonitrile to an absorption column wherein the reactor effluent containing crude acrylonitrile is contacted with a second aqueous stream to separate and remove the crude acrylonitrile as a bottom stream from the absorption column, transferring the bottom stream containing the crude acrylonitrile to a recovery and purification section where the acrylonitrile is recovered and purified, wherein the improvement comprises supplying the second aqueous stream to the absorption column by means of liquid spray nozzles.
摘要翻译：一种制备丙烯腈的方法，包括在反应器区域中在催化剂存在下使丙烯，氨和氧反应，以产生含有粗丙烯腈的反应器流出物，将含有粗丙烯腈的反应器流出物转移至骤冷塔，其中含有粗丙烯腈的反应器流出物为与水流接触以冷却反应器流出物，将含有粗丙烯腈的冷却反应器流出物转移到吸收塔，其中含有粗丙烯腈的反应器流出物与第二含水流接触，以分离和除去作为底部物流的粗丙烯腈吸收塔，将含有粗丙烯腈的底部流转移到回收和纯化部分，其中丙烯腈被回收和纯化，其中改进包括通过液体喷嘴将第二含水流供应到吸收塔。

5. 发明授权

US06843890B1 Purification and recovery of acetonitrile from waste solvent acetonitrile 有权
标题翻译：从废溶剂乙腈中纯化和回收乙腈
公开(公告)号：US06843890B1
公开(公告)日：2005-01-18
申请号：US09360327
申请日：1999-07-23
申请人： Sanjay Purushottam Godbole
发明人： Sanjay Purushottam Godbole
IPC分类号： B01D3/14 , B01D3/40 , B01D3/38 , C07C255/00
CPC分类号： C07C253/34 , B01D3/143 , B01D3/40 , C07C255/03
摘要： A process of treating waste solvent acetonitrile streams which contain at least one water extractable impurity such as isopropyl acetate to remove substantially all of the impurity by distilling the waste solvent acetonitrile in the presence of water for a time sufficient to allow the water extractable impurity to be extractively distilled from the acetonitrile. In preferred embodiments of the present invention the feed may contain either a mixture of waste solvent acetonitrile and crude acetonitrile or crude acetonitrile free of hydrogen cyanide by itself.
摘要翻译：处理含有至少一种可水提取杂质如乙酸异丙酯的废溶剂乙腈流的方法，以通过在水存在下蒸馏废溶剂乙腈足以使水可萃取的杂质为从乙腈中萃取蒸馏。在本发明的优选实施方案中，进料可以包含废溶剂乙腈和粗乙腈的混合物或其自身不含氰化氢的粗制乙腈。

6. 发明授权

US06326508B1 Purification and recovery of acetonitrile 有权
标题翻译：乙腈的纯化和回收
公开(公告)号：US06326508B1
公开(公告)日：2001-12-04
申请号：US09654631
申请日：2000-09-05
申请人： Sanjay Purushottam Godbole , Richard Lee Wappelhorst , Paul Alan Jacobson
发明人： Sanjay Purushottam Godbole , Richard Lee Wappelhorst , Paul Alan Jacobson
IPC分类号： C07C25500
CPC分类号： C07C253/34 , C07C255/03
摘要： The method of the present invention comprises feeding crude acetonitrile containing acrylonitrile as an impurity and water into the upper portion of a distillation column, distilling the crude acetonitrile in the presence of the water for a time sufficient to allow substantially all of the acrylonitrile impurity to be vaporized in the presence of the water, removing substantially all of the acrylonitrile in an overhead stream exiting from the distillation column and recovering the crude acetonitrile substantially free of acrylonitrile impurity from the lower portion of the distillation column. In particular, the method can be utilized to produce HPLC grade acetonitrile (UV cutoff
摘要翻译：本发明的方法包括将含有丙烯腈的粗乙腈作为杂质和水进料到蒸馏塔的上部，在水存在下蒸馏粗乙腈足够长的时间，使得基本上所有的丙烯腈杂质均为在水存在下蒸发，从蒸馏塔排出的塔顶馏出物中基本上除去所有的丙烯腈，并从蒸馏塔的下部回收基本上不含丙烯腈杂质的粗乙腈。特别地，该方法可用于制备HPLC级乙腈（UV截止<190）。

7. 发明授权

US6107509A Process for the recovery of acrylonitrile and methacrylontrile 有权
标题翻译：回收丙烯腈和甲基丙烯腈的方法
公开(公告)号：US6107509A
公开(公告)日：2000-08-22
申请号：US282877
申请日：1999-03-31
申请人： Michael Keith Hagans , Sanjay Purushottam Godbole , Patrick Michael Conrath , Donald Eugene Meihls
发明人： Michael Keith Hagans , Sanjay Purushottam Godbole , Patrick Michael Conrath , Donald Eugene Meihls
IPC分类号： B01D51/00 , B01D3/14 , C07C253/24 , C07C253/26 , C07C253/34 , C07C255/08 , C07C255/00
CPC分类号： C07C253/34
摘要： The process of manufacturing an unsaturated mononitrile selected from the group consisting of acrylonitrile and methacrylonitrile comprising transporting a reactor effluent containing the unsaturated mononitrile to a first column where the reactor effluent is cooled with at least one aqueous stream, transporting the cooled effluent containing the unsaturated mononitrile into a second column where the cooled effluent is contacted with at least one second aqueous stream to absorb the unsaturated mononitrile into at least one second aqueous stream, transporting the second aqueous stream containing the unsaturated mononitrile from the second column to a first distillation column for separation of the crude unsaturated mononitrile from the second aqueous stream, and transporting the separated crude unsaturated mononitrile to a second distillation column to remove at least some impurities from the crude mononitrile, and transporting the partially purified crude unsaturated mononitrile to a third distillation column (product column) to further purified the crude unsaturated mononitrile, recovering the purified unsaturated mononitrile as a sidestream from the product column, introducing about 100 to about 2000 ppm of water in the form consisting of steam and distilled water into the bottom stream obtained from the product column and recycling at least part of the product bottom stream obtained from the product column to the bottom portion of the product column. In another aspect of the present invention the steam and distilled water is added directly to the product column.
摘要翻译：制备选自丙烯腈和甲基丙烯腈的不饱和单腈的方法，包括将含有不饱和单腈的反应器流出物输送到第一塔，其中反应器流出物用至少一种水流冷却，输送含有不饱和单腈的冷却流出物进入第二塔，其中冷却的流出物与至少一个第二含水流接触以将不饱和单腈吸收到至少一个第二含水流中，将含有不饱和单腈的第二含水流从第二塔输送到用于分离的第一蒸馏塔的来自第二含水流的粗不饱和单腈，并将分离的粗不饱和单腈输送到第二蒸馏塔以从粗单腈除去至少一些杂质，并将部分纯化的粗不饱和单腈输送至将产物柱进一步纯化，进一步纯化粗不饱和单腈，从产物柱回收纯化的不饱和单腈作为侧流，将约100至约2000ppm的由蒸汽和蒸馏水组成的水引入底部流从产品柱中获得并将从产物柱获得的产物底部流的至少一部分再循环到产物柱的底部。在本发明的另一方面，将蒸汽和蒸馏水直接加入到产物柱中。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式