-
公开(公告)号：US06596901B1
公开(公告)日：2003-07-22
申请号：US09147484
申请日：1999-01-08
IPC分类号： C07C5142
摘要： A process for preparing acrylic acid or methacrylic acid comprises (a) preparing a gaseous product mixture having essentially the composition of a reaction mixture of the catalytic gas phase oxidation of C3-/C4-alkanes, -alkenes, -alkanols and/or -alkanals and/or precursors thereof to form acrylic acid or methacrylic acid, characterized by (b) condensing said product mixture, (c) crystallizing acrylic acid or methacrylic acid from the solution obtained in step (b), and (d) removing the resulting crystals from the mother liquor.
摘要翻译： 制备丙烯酸或甲基丙烯酸的方法包括（a）制备气态产物混合物，其基本上具有C3- / C4-烷烃， - 烯烃， - 烷醇和/或 - 烷烃的催化气相氧化反应混合物的组成 和/或其前体以形成丙烯酸或甲基丙烯酸，其特征在于（b）冷凝所述产物混合物，（c）从步骤（b）中获得的溶液中结晶丙烯酸或甲基丙烯酸，和（d）除去所得晶体 从母酒。
-
2.发明授权Method for the fractional condensation of a hot gas mixture containing acrylic acid or methacrylic acid and having a high proportion of non-condensable constituents 有权含有丙烯酸或甲基丙烯酸并具有高比例不可冷凝成分的热气体混合物的分级冷凝的方法公开(公告)号：US06646161B1
公开(公告)日：2003-11-11
申请号：US09508077
申请日：2000-03-13
申请人： Bernd Eck , Otto Machhammer , Theo Proll , Volker Schliephake , Joachim Thiel , Klaus Bröllos
发明人： Bernd Eck , Otto Machhammer , Theo Proll , Volker Schliephake , Joachim Thiel , Klaus Bröllos
IPC分类号： C07C5142
摘要： A process for the fractional condensation of a gas mixture which, in addition to acrylic acid or methacrylic acid, also contains at least one further condensable component and additionally a high proportion of one or more noncondensable components, wherein the gas mixture is passed through a column having separatory internals and the condensable components are condensed by cooling.
摘要翻译： 一种除丙烯酸或甲基丙烯酸之外还含有至少一种其它可冷凝组分和另外高比例的一种或多种不可冷凝组分的气体混合物的分级冷凝的方法，其中气体混合物通过柱 具有分离内件和可冷凝组分通过冷却而冷凝。
-
公开(公告)号：US06448439B1
公开(公告)日：2002-09-10
申请号：US09508084
申请日：2000-03-13
申请人： Bernd Eck , Otto Machhammer , Theo Proll , Volker Schliephake , Joachim Thiel , Klaus Bröllos
发明人： Bernd Eck , Otto Machhammer , Theo Proll , Volker Schliephake , Joachim Thiel , Klaus Bröllos
IPC分类号： C07C5142
摘要： A process for preparing acrylic acid or methacrylic acid comprises preparing a gaseous product mixture having essentially the composition of a reaction mixture of the catalytic gas phase oxidation of C3-/C4-alkanes, -alkenes, -alkanols and/or -alkanals and/or precursors thereof to form acrylic acid or methacrylic acid. The product is removed from the gaseous product mixture by a process comprising the following steps: (a) condensing said gaseous product mixture, (b) crystallizing acrylic acid or methacrylic acid from the solution obtained in step (a), (c) removing the resulting crystals from the mother liquor, and (d) recycling at least a portion of said mother liquor from step (c) into step (a).
摘要翻译： 制备丙烯酸或甲基丙烯酸的方法包括制备气态产物混合物，其基本上具有C3- / C4-烷烃， - 烯烃， - 链烷醇和/或 - 烷烃和/或 - 烷烃的催化气相氧化反应混合物的组成和/或 其前体形成丙烯酸或甲基丙烯酸。 通过包括以下步骤的方法从气态产物混合物中除去产物：（a）冷凝所述气态产物混合物，（b）从步骤（a）中获得的溶液中结晶丙烯酸或甲基丙烯酸，（c） 从母液中得到的晶体，和（d）将来自步骤（c）的所述母液的至少一部分再循环到步骤（a）中。
-
公开(公告)号：US06433222B1
公开(公告)日：2002-08-13
申请号：US09764985
申请日：2001-01-22
申请人： Bernd Eck , Jörg Heilek , Volker Schliephake , Theo Proll , Klaus Bröllos , Otto Machhammer , Joachim Thiel
发明人： Bernd Eck , Jörg Heilek , Volker Schliephake , Theo Proll , Klaus Bröllos , Otto Machhammer , Joachim Thiel
IPC分类号： C07C5142
摘要： A process for the preparation of acrylic acid by: (a) preparation of a gaseous product mixture which essentially has the composition of a reaction mixture of catalytic gas-phase oxidation of C3-alkanes, C3-alkenes, C3-alkanols and/or C3-alkanals and/or intermediates thereof to acrylic acid, which comprises (b) condensation of the gaseous product mixture, (c) crystallization of the acrylic acid from the solution obtained in stage (b), with partial evaporation of the solution under reduced pressure, (d) isolation of the resulting crystals from the mother liquor, (e) recycling of at least a part of the mother liquor from stage (d) to stage (b) and (f) recycling of at least a part of the evaporated solution from stage (c) to stage (b).
摘要翻译： 一种通过以下方法制备丙烯酸的方法：（a）制备气态产物混合物，其基本上具有C3-烷烃，C3-烯烃，C3-链烷醇和/或C3的催化气相氧化反应混合物的组成 - 烷醇和/或其中间体，其包括（b）气态产物混合物的冷凝，（c）丙烯酸从阶段（b）中获得的溶液中的结晶，在减压下部分蒸发溶液 ，（d）从母液中分离得到的晶体，（e）将至少一部分母液从阶段（d）再循环到阶段（b），和（f）将至少一部分蒸发的 从（c）阶段到（b）阶段的方案。
-
公开(公告)号：US5831124A
公开(公告)日：1998-11-03
申请号：US798138
申请日：1997-02-12
申请人： Otto Machhammer , Albrecht Dams , Bernd Eck , Theo Proll
发明人： Otto Machhammer , Albrecht Dams , Bernd Eck , Theo Proll
CPC分类号： C07C51/43
摘要： Acrylic acid or methacrylic acid is purified by (a) subjecting a mixture comprising the acrylic acid or methacrylic acid to a sharply defined separation process essentially in the absence of an organic solvent, with the composition of the phase in which the acrylic acid or methacrylic acid accumulates remaining essentially constant when the composition of the other phases participating in the mass transfer changes, then taking off this phase and (b) subjecting at least a part of the remaining phase from stage(a) to a less sharply defined separation process and (c) feeding one of the phases formed in stage (b) to the sharply defined separation process in stage (a). In addition, the invention provides a process for preparing acrylic acid or methacrylic acid which includes the abovementioned purification process.
摘要翻译： 丙烯酸或甲基丙烯酸通过（a）基本上在不存在有机溶剂的情况下对包含丙烯酸或甲基丙烯酸的混合物进行急剧定义的分离过程来纯化，其中丙烯酸或甲基丙烯酸 当参与质量传递的其它相的组成发生变化时，剩下的基本上保持恒定，然后脱除该相，和（b）使来自阶段（a）的剩余相的至少一部分经受较不明确的分离过程和（ c）在步骤（a）中将阶段（b）中形成的相中的一个进料加入到明确限定的分离过程中。 此外，本发明提供一种制备丙烯酸或甲基丙烯酸的方法，其包括上述纯化方法。
-
公开(公告)号：US5817865A
公开(公告)日：1998-10-06
申请号：US779235
申请日：1997-01-03
申请人： Otto Machhammer , Toni Dockner , Gerd-Jurgen Engert , Theo Proll
发明人： Otto Machhammer , Toni Dockner , Gerd-Jurgen Engert , Theo Proll
IPC分类号： B01D9/02 , B01D3/00 , C07B61/00 , C07C51/235 , C07C51/25 , C07C51/43 , C07C51/48 , C07C57/04 , C07C57/05 , C07C57/055 , C07C57/07 , C07C69/54 , C07C67/00 , C07C51/16
CPC分类号： C07C51/43 , Y02P20/582
摘要： A process for preparing acrylic acid and/or esters comprises the steps of: (a) catalytic gas phase oxidation of propene and/or acrolein to acrylic acid to obtain a gaseous reaction product comprising acrylic acid, (b) solvent absorption of the reaction product, (c) distillation of the solvent loaded with acrylic acid to obtain a crude acrylic acid and the solvent, (d) purification of the crude acrylic acid by crystallization and (e) optionally esterification of the crystalline acrylic acid.
摘要翻译： 制备丙烯酸和/或酯的方法包括以下步骤：（a）将丙烯和/或丙烯醛催化气相氧化成丙烯酸以获得包含丙烯酸的气态反应产物，（b）反应产物的溶剂吸收 ，（c）负载丙烯酸的溶剂的蒸馏以获得粗丙烯酸和溶剂，（d）通过结晶纯化粗丙烯酸，和（e）任意酯化结晶丙烯酸。
-
7.发明授权Method for producing partial oxidation products and/or partial ammoxidation products of at least one olefinic hydrocarbon 有权用于制备至少一种烯烃的部分氧化产物和/或部分氨氧化产物的方法公开(公告)号：US07348443B2
公开(公告)日：2008-03-25
申请号：US10482191
申请日：2002-06-21
IPC分类号： C07D301/06
CPC分类号： C07C45/33 , B01J27/199 , C07C45/35 , C07C47/22
摘要： Partial oxidation products and/or ammoxidation products of an olefinic hydrocarbon A′ are prepared by a process in which said olefinic hydrocarbon is produced during normal operation by partial dehydrogenation and/or oxydehydrogenation of hydrocarbon A and fed in from another source during partial or complete nonoperation of the dehydrogenation and/or oxydehydrogenation.
摘要翻译： 通过一种方法制备烯烃A'的部分氧化产物和/或氨氧化产物，其中在正常操作期间通过部分脱氢和/或烃A的氧化脱氢产生所述烯烃并在部分或完全不操作期间从另一来源进料 的脱氢和/或氧化脱氢。
-
公开(公告)号：US5258106A
公开(公告)日：1993-11-02
申请号：US672284
申请日：1991-03-20
申请人： Wolfgang Habermann , Werner Bochnitschek , Johann Fritzmann , Peter Hammes , Theo Proll , Walter Weisbrodt
发明人： Wolfgang Habermann , Werner Bochnitschek , Johann Fritzmann , Peter Hammes , Theo Proll , Walter Weisbrodt
CPC分类号： B01D61/44 , B01D61/52 , C25B1/10 , C25B1/22 , Y02E60/366
摘要： Alkali metal sulfates are electrolyzed to more concentrated solutions of alkali metal hydroxide and sulfuric acid by using a three-compartment electrodialysis cell at temperatures of .gtoreq.70.degree. to .gtoreq.150.degree. C. and current densities of from 0.5 to 15 kA/m.sup.2 using an anion exchange membrane whose polymeric ion exchange matrix comprises a styrene/divinylbenzene copolymer containing very strongly basic quaternary ammonium groups and a hydronium ion blocker, on whose central compartment side is an ion exchange layer or membrane containing tertiary or secondary amino groups.
摘要翻译： 碱金属硫酸盐通过使用三室电渗析池在≥70℃至> 150℃的温度下电解成更浓的碱金属氢氧化物和硫酸溶液，电流密度为0.5-15kA / m2，其阴离子交换膜的聚合物离子交换基质包含含非常强碱性季铵基团的苯乙烯/二乙烯基苯共聚物和水合氢离子阻聚剂，其中心室侧为离子交换层或含有叔胺或仲氨基的膜。
-
9.发明授权Industrial process for the heterogeneously catalytic gas-phase oxidation of propane to form acrolein 失效用于丙烷异丙烯催化气相氧化的工业过程，形成丙烯醛公开(公告)号：US06252122B1
公开(公告)日：2001-06-26
申请号：US09147340
申请日：1998-12-04
IPC分类号： C07C4533
CPC分类号： C07C45/33 , B01J23/31 , C07C51/252 , C07C47/22 , C07C57/04
摘要： In an industrial process for the heterogeneously catalyzed gas-phase oxidation of propane with molecular oxygen to give acrolein, the feed gas mixture having an initial undiluted molar ratio of the reactants propane:O2 of 7:3 is diluted with the reactant propane and, if desired, inert gases in such a way that the feed gas mixture comprises more than 70% by volume of propane and at least 5% by volume of O2.
摘要翻译： 在丙烷与分子氧的非均相催化气相氧化反应产生丙烯醛的工业过程中，反应物丙烷：O 2为7：3的初始未稀释摩尔比的原料气体混合物用反应物丙烷稀释，如果 所需的惰性气体，使得进料气体混合物包含大于70体积％的丙烷和至少5体积％的O 2。
-
公开(公告)号：US5017725A
公开(公告)日：1991-05-21
申请号：US471080
申请日：1990-01-30
IPC分类号： C07D277/04 , C07C319/02 , C07C319/06 , C07C323/25 , C07D277/60
CPC分类号： C07C319/02 , C07C323/25
摘要： Addition salts of cysteamine with acids are prepared by reacting aziridine with an organic sulfur compound of oxidation state -2 and with a ketone and then subjecting the thiazolidine formed as an intermediate to acid hydrolysis, by a process in which aziridine and the ketone are reacted with ammonium hydrogen sulfide or with a metal hydrogen sulfide with the addition of a moderately strong or strong acid at from -10.degree. to +100.degree. C. and a pH which is greater than or equal to 8.5 is maintained.
摘要翻译： 半胱胺与酸的加成盐通过使氮丙啶与氧化态-2的有机硫化合物和酮反应，然后使形成的中间体的噻唑烷进行酸水解，通过其中将氮丙啶和酮与 硫化氢铵或与金属硫化氢反应，加入中等强度或强酸的温度为-10至+ 100℃，并保持大于或等于8.5的pH值。
-
-
-
-
-
-
-
-
-
搜索结果
11 条记录 (耗时 0.023 秒)
