公开(公告)号：US5177229A

公开(公告)日：1993-01-05

申请号：US727950

申请日：1991-07-10

申请人： John Kahsnitz ,  Alfred Oberholz ,  Udo Knippenberg ,  Michael Zolffel

发明人： John Kahsnitz ,  Alfred Oberholz ,  Udo Knippenberg ,  Michael Zolffel

IPC分类号： C07C67/08

CPC分类号： C07C67/08

摘要： Alcohols and acids are esterified by means of liquid-phase equilibrium reactions on ion exchangers in an apparatus comprising a prereactor and a rectifying column with external reactors. The process is characterized by the fact that a portion of one of the starting compounds is fed directly to the external reactors.

摘要翻译： 在包含预反应器和具有外部反应器的精馏塔的装置中，醇和酸通过液相平衡反应在离子交换剂上酯化。 该方法的特征在于将一种起始化合物的一部分直接进料至外部反应器。

公开(公告)号：US4219678A

公开(公告)日：1980-08-26

申请号：US974550

申请日：1978-12-29

申请人： Fritz Obenaus ,  Wilhelm Droste ,  Wolf Streubel ,  Michael Zolffel ,  Wolfgang Muller

发明人： Fritz Obenaus ,  Wilhelm Droste ,  Wolf Streubel ,  Michael Zolffel ,  Wolfgang Muller

IPC分类号： C07C43/04 ,  B01J31/00 ,  C07B61/00 ,  C07C41/00 ,  C07C41/01 ,  C07C41/05 ,  C07C41/06 ,  C07C41/34 ,  C07C67/00 ,  C07C41/12

CPC分类号： C07C41/06 ,  C07C41/42

摘要： Process for the preparation of pure methyl tert.-butyl ether. Isobutene or isobutene-containing hydrocarbon mixtures are reacted with methanol in a molar ratio of 1:1 to 1:2 in the liquid phase at temperatures of between 30.degree. and 100.degree. C. on sulfonated, strongly acidic, macroporous organic ion exchange resins. After separation of the unreacted hydrocarbons, the reaction mixture is distilled under pressure; the methanol-containing distillate formed during the distillation is recycled into the zone of the reaction between methanol and isobutene; and pure methyl tert.-butyl ether is withdrawn from the sump of the distillation column.

摘要翻译： 纯甲基叔丁基醚的制备方法。 在磺化，强酸性，大孔有机离子交换树脂的温度为30-100℃的液相中，使含异丁烯或异丁烯的烃混合物与摩尔比为1:1至1:2的甲醇反应。 分离未反应的烃后，将反应混合物在压力下蒸馏; 在蒸馏期间形成的含甲醇的馏出物循环到甲醇和异丁烯之间的反应区域中; 从蒸馏塔的贮槽中取出纯甲基叔丁基醚。

公开(公告)号：US4456778A

公开(公告)日：1984-06-26

申请号：US300785

申请日：1981-09-10

申请人： Michael Zolffel ,  Johann Gaube

发明人： Michael Zolffel ,  Johann Gaube

IPC分类号： C07C17/10 ,  C07C17/00 ,  C07C17/38 ,  C07C19/03 ,  C07C19/04 ,  C07C19/041 ,  C07C67/00

CPC分类号： C07C17/38

摘要： The reaction gases from the chlorination of methane and preferably also methyl chloride, after removal of the HCl and drying, are subjected to the steps of partially condensing the dried stream of reaction gases at a pressure of 5-15 bars and at a temperature of 0.degree.-40.degree. C. which condenses the chloroform and the carbon tetrachloride; contacting the gaseous phase of the partially condensed stream of reaction gases in a countercurrent manner with a stream of liquid methyl chloride; recycling the stream of gases discharging from the contacting stream of liquid methyl chloride to the chlorination stage; and fractionating the contacting stream of liquid methyl chloride.

摘要翻译： 在除去HCl并干燥之后，来自甲烷氯化反应气体，优选氯甲烷的反应气体经受以5-15巴的压力和0℃的温度部分冷凝干燥的反应气流的步骤 在-40℃-40℃下冷凝氯仿和四氯化碳; 将部分冷凝的反应气体流的气相与液态氯甲烷流逆流地接触; 将从液体氯甲烷的接触流中排出的气体流循环到氯化阶段; 并分离液体甲基氯的接触流。

公开(公告)号：US4332645A

公开(公告)日：1982-06-01

申请号：US167443

申请日：1980-07-10

申请人： Wolfgang H. E. Muller ,  Michael Zolffel

发明人： Wolfgang H. E. Muller ,  Michael Zolffel

IPC分类号： C07C29/80 ,  C02F1/04 ,  C07C27/00 ,  C07C31/04 ,  C07C67/00 ,  C07D307/08 ,  B01D3/00 ,  C07D307/00

CPC分类号： C07D307/08 ,  Y10S203/20

摘要： A process for the continuous separation of methanol and water from a feed mixture containing predominantly tetrahydrofuran admixed with water, methanol and small amounts of additional compounds, in a rectifying apparatus having at last two rectifying columns, of which two are operated at different pressures which involves feeding the raw material into a first column operated under lower pressure, and introducing the distillate from the column operated under a lower pressure to a second column operated under a higher pressure, while a product stream from the second column operated under a higher pressure is reintroduced into the first column operated under a lower pressure. In this process the product stream withdrawn from the second column operated under a higher pressure is withdrawn as a side stream from the stripping or enrichment section of the second column and is returned into the first column operated under a lower pressure, while a methanol-enriched product stream containing practically all of the methanol introduced with the raw material into the rectifying apparatus is withdrawn from the head of the second column operated under a higher pressure. The first column is operated for example at atmospheric pressure and the second column is operated at a pressure of from 1 to 25 bar.

摘要翻译： 在最后两个精馏塔的精馏装置中，甲醇和水从主要包含四氢呋喃混合的进料混合物中连续分离出来的方法，其中两个精馏塔在不同的压力下操作， 将原料进料到在较低压力下操作的第一塔中，并将来自在较低压力下操作的塔的馏出物引入到在较高压力下操作的第二塔中，同时再次引入来自第二塔的产物流 进入在较低压力下运行的第一列。 在该方法中，从较高压力下运行的第二塔排出的产物流作为来自第二塔的汽提或富集段的侧流排出，并返回到在较低压力下运行的第一塔中，同时富含甲醇 将从原料中引入的几乎所有的甲醇的整个装入整流装置的产物流从高压运转的第二塔的头部取出。 第一列例如在大气压下操作，第二列在1至25巴的压力下操作。