公开(公告)号：US06284022B1

公开(公告)日：2001-09-04

申请号：US09290884

申请日：1999-04-14

申请人： Bernd Sachweh ,  Michael-Dieter Ulbrich ,  Wolf-Steffen Weissker

发明人： Bernd Sachweh ,  Michael-Dieter Ulbrich ,  Wolf-Steffen Weissker

IPC分类号： B01D4700

CPC分类号： B01D47/14 ,  B01D53/14 ,  B01D53/78

摘要： The invention relates to methods for removing gaseous contaminants and aerosols from a vapor-saturated gas stream, in which method a gas stream containing a) at least one gaseous contaminant which is soluble in a scrubbing liquid, with or without salt formation, and b) at least one aerosol with a particle size from 0.01 to 10 &mgr;m, is brought into contact, in a scrubber column, with a scrubbing liquid, the temperature of which is lower by at least 2° C. than the temperature of the gas stream, resulting in the formation of a vapor phase, the degree of saturation S of which is greater than 1, and in the removal of the gaseous and particulate contaminants from the gas stream.

摘要翻译： 本发明涉及用于从气相饱和气流中除去气态污染物和气溶胶的方法，其中所述方法包含a）至少一种可溶于洗涤液体中的气态污染物，具有或不具有盐形成的气流，以及b）至少 一个粒度为0.01至10微米的气溶胶在洗涤塔中与洗涤液接触，洗涤液的温度比气流的温度低至少2℃，导致 形成气相，其饱和度S大于1，以及从气流中除去气态和微粒污染物。

公开(公告)号：US20120073953A1

公开(公告)日：2012-03-29

申请号：US13235427

申请日：2011-09-18

申请人： Maria GUIXA GUARDIA ,  Rolf Pinkos ,  Nadja Pollmer ,  Wolf-Steffen Weissker ,  Hugues Vandenmersch

发明人： Maria GUIXA GUARDIA ,  Rolf Pinkos ,  Nadja Pollmer ,  Wolf-Steffen Weissker ,  Hugues Vandenmersch

IPC分类号： B01D3/36

CPC分类号： B01D3/143 ,  B01D3/36 ,  C07D307/36

摘要： A process which isolates tetrahydrofuran from a stream of tetrahydrofuran, alkanol and high boilers, by: (a) separating off a first stream of tetrahydrofuran and alkanol as azeotrope in a first distillation stage; (b) feeding part of the first stream into a reactor for esterifying maleic anhydride, giving a second stream of tetrahydrofuran and monoalkyl maleate; (c) separating the second stream into a third stream of monoalkyl maleate and a fourth stream of tetrahydrofuran in a second distillation stage; (d) feeding the fourth stream of tetrahydrofuran from the second distillation stage and the part of the first stream from (a) which is not fed to the reactor into a third distillation stage to obtain a product stream of tetrahydrofuran and a sixth stream of tetrahydrofuran and alkanol; (e) recirculating the sixth stream from the third distillation stage into the first distillation stage or the reactor in (b).

摘要翻译： 通过以下步骤分离四氢呋喃与四氢呋喃，烷醇和高沸点物流的方法：（a）在第一蒸馏阶段中分离第一流的四氢呋喃和链烷醇作为共沸物; （b）将第一流的一部分进料到用于酯化马来酸酐的反应器中，得到第二股四氢呋喃和马来酸单烷基酯; （c）在第二蒸馏阶段将第二物流分离成马来酸单烷基酯和第四四氢呋喃流; （d）将来自第二蒸馏阶段的第四个四氢呋喃流和来自（a）的未进料到反应器的第一个物流部分进入第三个蒸馏阶段以获得四氢呋喃的产物流和第六个四氢呋喃流 和链烷醇; （e）将第六流从第三蒸馏段再循环到第一蒸馏阶段或（b）中的反应器中。

公开(公告)号：US09186599B2

公开(公告)日：2015-11-17

申请号：US13235427

申请日：2011-09-18

申请人： Maria Guixa Guardia ,  Rolf Pinkos ,  Nadja Pollmer ,  Wolf-Steffen Weissker ,  Hugues Vandenmersch

发明人： Maria Guixa Guardia ,  Rolf Pinkos ,  Nadja Pollmer ,  Wolf-Steffen Weissker ,  Hugues Vandenmersch

IPC分类号： C07D307/00 ,  B01D3/14 ,  B01D3/36 ,  C07D307/36

CPC分类号： B01D3/143 ,  B01D3/36 ,  C07D307/36

摘要： A process which isolates tetrahydrofuran from a stream of tetrahydrofuran, alkanol and high boilers, by: (a) separating off a first stream of tetrahydrofuran and alkanol as azeotrope in a first distillation stage; (b) feeding part of the first stream into a reactor for esterifying maleic anhydride, giving a second stream of tetrahydrofuran and monoalkyl maleate; (c) separating the second stream into a third stream of monoalkyl maleate and a fourth stream of tetrahydrofuran in a second distillation stage; (d) feeding the fourth stream of tetrahydrofuran from the second distillation stage and the part of the first stream from (a) which is not fed to the reactor into a third distillation stage to obtain a product stream of tetrahydrofuran and a sixth stream of tetrahydrofuran and alkanol; (e) recirculating the sixth stream from the third distillation stage into the first distillation stage or the reactor in (b).

摘要翻译： 通过以下步骤分离四氢呋喃与四氢呋喃，烷醇和高沸点物流的方法：（a）在第一蒸馏阶段中分离第一流的四氢呋喃和链烷醇作为共沸物; （b）将第一流的一部分进料到用于酯化马来酸酐的反应器中，得到第二股四氢呋喃和马来酸单烷基酯; （c）在第二蒸馏阶段将第二物流分离成马来酸单烷基酯和第四四氢呋喃流; （d）将来自第二蒸馏阶段的第四个四氢呋喃流和来自（a）的未进料到反应器中的第一个物流部分进入第三个蒸馏阶段以获得四氢呋喃的产物流和第六个四氢呋喃流 和链烷醇; （e）将第六流从第三蒸馏段再循环到第一蒸馏阶段或（b）中的反应器中。

公开(公告)号：US20110021789A1

公开(公告)日：2011-01-27

申请号：US12935894

申请日：2009-03-23

申请人： Gunther Windecker ,  Jens Weiguny ,  Alexander Weck ,  Ellen Dahlhoff ,  Wolf-Steffen Weissker ,  Jörg Heilek ,  Thomas Krug ,  Ralf Freyberger

发明人： Gunther Windecker ,  Jens Weiguny ,  Alexander Weck ,  Ellen Dahlhoff ,  Wolf-Steffen Weissker ,  Jörg Heilek ,  Thomas Krug ,  Ralf Freyberger

IPC分类号： C07D307/60

CPC分类号： C07C51/573 ,  C07C57/145

摘要： A process for decreasing fumaric acid deposits in the preparation of maleic anhydride by heterogeneously catalyzed oxidation of a hydrocarbon with molecular oxygen, in which the maleic anhydride is absorbed from the crude product mixture in an absorbent in an absorption column and desorbed again in a desorption column, the entirety or a portion of the absorbent depleted in maleic anhydride, for controlled precipitation of fumaric acid, being cooled and/or concentrated by evaporating a portion of the absorbent to such an extent that the difference between the concentration of fumaric acid in the recycle stream at the outlet of the desorption column under the conditions existing there and the equilibrium concentration of fumaric acid according to the solubility curve after the cooling and/or evaporation of a portion of the absorbent is greater than or equal to 250 ppm by weight, and the fumaric acid precipitated as a solid is removed completely or partly from the absorbent recycling system and the fumaric acid-depleted absorbent is recycled completely or partly to the absorption column.

摘要翻译： 一种通过用分子氧异构催化氧化烃来减少马来酸酐制备中的富马酸沉积物的方法，其中马来酸酐在吸收塔中的吸收剂中从粗产物混合物中吸收并在解吸塔中再解吸 ，通过将一部分吸收剂蒸发而使富马酸的受控沉淀的全部或一部分吸收剂消耗马来酸酐，从而将富马酸的控制沉淀冷却和/或浓缩至使回收物中的富马酸浓度之间的差异 在存在的条件下在解吸塔的出口处的流，并且在一部分吸收剂的冷却和/或蒸发之后，根据溶解度曲线的富马酸的平衡浓度大于或等于250重量ppm， 作为固体沉淀的富马酸被完全或部分地从吸收剂循环系统中除去 em和富马酸贫乏的吸收剂被完全或部分地再循环到吸收塔。