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公开(公告)号：EP1678117A1
公开(公告)日：2006-07-12
申请号：EP04768940.1
申请日：2004-10-18
CPC分类号： C07C29/177 , C07C67/08 , C07C31/207 , C07C69/60
摘要： A process for the production of carboxylic acid esters by reaction of a carboxylic acid selected from mono-, di- and polycarboxylic acids, with an alcohol in the presence of water of solution comprising the steps of: (a) providing a solution comprising the carboxylic acid and the water of solution; (b) reacting the solution of the carboxylic acid in an esterification zone with an alcohol to form an ester and water of esterification; (c) removing the water of solution and the water of esterification; and (d) recovering the ester.
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2.发明授权
公开(公告)号：EP1220822B1
公开(公告)日：2004-08-25
申请号：EP00964500.3
申请日：2000-10-04
IPC分类号： C07C27/12 , C07C51/215 , C07C51/31 , C07C57/145 , C07D307/60 , C07D307/08 , C07D307/33 , C07C29/149 , C07C31/20
CPC分类号： C07D315/00 , C07C29/149 , C07C51/215 , C07C51/313 , C07C51/573 , C07D307/08 , C07C31/207 , C07C57/145
摘要： A process is described for the co-production of maleic anhydride and at least one C4 compound selected from butane-1,4-diol, gamma -butyrolactone, and tetrahydrofuran in which maleic anhydride is produced by partial oxidation of a C4 hydrocarbon feedstock to yield a vaporous reaction effluent stream comprising maleic anhydride, water, unconverted hydrocarbon feedstock, and carbon oxides. A part of the maleic anhydride present in the vaporous reaction effluent stream is condensed to form a crude maleic anhydride stream and leave a residual vaporous stream containing residual amounts of maleic anhydride. Further maleic anhydride is absorbed.from the residual vaporous stream by absorption in an organic solvent, water or an aqueous solution. Maleic anhydride is then recovered from the loaded liquid absorption medium. Said at least one C4 compound is produced by hydrogenation of a C4+ hydrogenation feedstock selected from maleic anhydride, maleic acid, dialkyl maleates, and mixtures of two or more thereof. The process is characterised in that the vaporous reaction effluent stream is cooled prior to step (iii), that a guard bed of a phosphorus-absorbing material is placed in the path of the cooled vaporous reaction effluent stream prior to step (iii) thereby to remove phosphorus-containing materials therefrom, and that material of the crude maleic anhydride stream of step (iii) is used as the C4+ hydrogenation feedstock of step (viii) or is used to prepare the C4+ hydrogenation feedstock of step (viii).
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3.发明公开
公开(公告)号：EP1220822A1
公开(公告)日：2002-07-10
申请号：EP00964500.3
申请日：2000-10-04
IPC分类号： C07C27/12 , C07C51/215 , C07C51/31 , C07C57/145 , C07D307/60 , C07D307/08 , C07D307/33 , C07C29/149 , C07C31/20
CPC分类号： C07D315/00 , C07C29/149 , C07C51/215 , C07C51/313 , C07C51/573 , C07D307/08 , C07C31/207 , C07C57/145
摘要： A process is described for the co-production of maleic anhydride and at least one C4 compound selected from butane-1,4-diol, gamma -butyrolactone, and tetrahydrofuran in which maleic anhydride is produced by partial oxidation of a C4 hydrocarbon feedstock to yield a vaporous reaction effluent stream comprising maleic anhydride, water, unconverted hydrocarbon feedstock, and carbon oxides. A part of the maleic anhydride present in the vaporous reaction effluent stream is condensed to form a crude maleic anhydride stream and leave a residual vaporous stream containing residual amounts of maleic anhydride. Further maleic anhydride is absorbed.from the residual vaporous stream by absorption in an organic solvent, water or an aqueous solution. Maleic anhydride is then recovered from the loaded liquid absorption medium. Said at least one C4 compound is produced by hydrogenation of a C4+ hydrogenation feedstock selected from maleic anhydride, maleic acid, dialkyl maleates, and mixtures of two or more thereof. The process is characterised in that the vaporous reaction effluent stream is cooled prior to step (iii), that a guard bed of a phosphorus-absorbing material is placed in the path of the cooled vaporous reaction effluent stream prior to step (iii) thereby to remove phosphorus-containing materials therefrom, and that material of the crude maleic anhydride stream of step (iii) is used as the C4+ hydrogenation feedstock of step (viii) or is used to prepare the C4+ hydrogenation feedstock of step (viii).
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公开(公告)号：EP1694661B1
公开(公告)日：2010-04-21
申请号：EP04801255.3
申请日：2004-12-01
IPC分类号： C07D307/08
CPC分类号： C07D307/08
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公开(公告)号：EP1694661A1
公开(公告)日：2006-08-30
申请号：EP04801255.3
申请日：2004-12-01
IPC分类号： C07D307/08
CPC分类号： C07D307/08
摘要： A process for the production of an ether optionally with a diol and/or a lactone, by reaction of a corresponding organic feed material selected from unsaturated dicarboxylic acids and/ or anhydrides, mono-esters of unsaturated dicarboxylic acids and/or anhydrides, diesters of unsaturated dicarboxylic acids and/or anhydrides, unsaturated lactones, and mixtures of two or more thereof in the presence of hydrogen which comprises the steps of-(a)supplying a stream comprising at least a portion of the organic feed material to a pre-reactor zone comprising catalyst and operating under reaction conditions and contacting said feed with a hydrogen containing stream such that at least some of the carbon carbon double bonds are saturated;(b)vaporising the at least partly saturated feed into the hydrogen containing stream in a vaporising zone;(c)supplying the hydrogen-containing stream containing the vaporised at least partially saturated feed to a reaction zone comprising catalyst and operating under reaction conditions; (d)recovering from the reaction zone a product stream comprising the ether and optionally diol and/or lactone; and (e)recycling depleted hydrogen-containing stream to at least the pre-reactor zone or the vaporisation zone.
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