公开(公告)号：US5532389A

公开(公告)日：1996-07-02

申请号：US303852

申请日：1994-09-09

申请人： David L. Trent ,  George J. Quarderer ,  Kim G. Bargeron ,  Douglas C. Greminger ,  David J. Koranek ,  Erik J. Stewart ,  Curtis N. Swisher ,  Cheryl A. Tirtowidjojo ,  Danil Tirtowidjojo

发明人： David L. Trent ,  George J. Quarderer ,  Kim G. Bargeron ,  Douglas C. Greminger ,  David J. Koranek ,  Erik J. Stewart ,  Curtis N. Swisher ,  Cheryl A. Tirtowidjojo ,  Danil Tirtowidjojo

IPC分类号： C01B11/04 ,  C01B11/06 ,  C07C29/66 ,  C07C33/42 ,  C07D301/26 ,  C07D303/04 ,  C07D303/08

CPC分类号： C01B11/04 ,  C01B11/064 ,  C07C29/66 ,  C07D301/26 ,  B01F13/0059

摘要： A process of preparing alkylene oxides comprises steps of: (1) optionally forming a hypochlorite solution; (2) contacting chlorine with a solution of a hypochlorite below about 60.degree. C., and a pH of less than about 5.5, with sufficient micromixing to achieve a product hypochlorous acid in a yield of at least about 80 percent; (3) separating at least a portion the hypochlorous acid from an aqueous metal chloride solution wherein the solution is sprayed as droplets; (4) distilling the remaining liquid phase; (5) absorbing the hypochlorous acid and dichlorine monoxide in low-chlorides water to produce a low-chlorides aqueous hypochlorous acid solution; (6) contacting the low-chlorides aqueous hypochlorous acid solution with an olefin in a continuous process to form a olefin chlorohydrin; (7) optionally contacting the olefin chlorohydrin with a base to form a alkylene oxide and a salt solution; and (8) optionally separating the alkylene oxide from the salt solution. (9) optionally removing chlorates from the chloride brine by contacting the chlorates with acid to convert the chlorates to chlorine; and (10) optionally recycling the chlorine. The process yields particularly high yields of the alkylene oxide without substantial production of by-products.

摘要翻译： 制备环氧烷的方法包括以下步骤：（1）任选地形成次氯酸盐溶液; （2）使氯与低于约60℃的次氯酸盐溶液和小于约5.5的pH接触，以足够的微量混合，以达到产率为至少约80％的产物次氯酸; （3）将次氯酸与金属氯化物水溶液的至少一部分分离，其中溶液以液滴的形式喷雾; （4）蒸馏剩余的液相; （5）在低氯水中吸收次氯酸和二氯一氧化物，生成低氯酸次氯酸溶液; （6）使连续过程中的低氯酸次氯酸溶液与烯烃接触以形成烯烃氯代醇; （7）任选地将烯烃氯醇与碱接触以形成环氧烷和盐溶液; 和（8）任选地从所述盐溶液中分离所述环氧烷。 （9）通过使氯酸盐与酸接触以将氯酸盐转化为氯，任选地从氯化物盐水中除去氯酸盐; 和（10）任选地再循环氯。 该方法产生特别高的环氧烷产率，而没有大量生产副产物。

公开(公告)号：US5486627A

公开(公告)日：1996-01-23

申请号：US348639

申请日：1994-12-02

申请人： George J. Quarderer, Jr. ,  Curtis N. Swisher ,  David L. Trent

发明人： George J. Quarderer, Jr. ,  Curtis N. Swisher ,  David L. Trent

IPC分类号： C07D301/26 ,  C07D303/04 ,  C07D303/08 ,  C07D303/14

CPC分类号： C07D301/26

摘要： Described herein is a method for producing epoxides which is continuous, inhibits formation of chlorinated byproducts, and eliminates or substantially reduces waste water discharge. The method includes:(a) forming a low chlorides aqueous hypochlorous acid solution;(b) contacting the low chlorides aqueous hypochlorous acid solution with at least one unsaturated organic compound to form an aqueous organic product comprising at least olefin chlorohydrin;(c) contacting at least the olefin chlorohydrin with an aqueous alkali metal hydroxide to form an aqueous salt solution product containing at least epoxide; and(d) isolating the epoxide from the aqueous salt solution;wherein water is recovered from the product of at least Step (b) and recycled into Step (a) for use in forming the low chlorides aqueous hypochlorous acid solution. In this process, not only is the water internally recycled after Step (b), but a concentrated brine solution is generated in both Steps (a) and (d) which is useful in other processes such as electrochemical production of chlorine and caustic. The chlorine and caustic, in turn, may then be recycled back to the method of this invention.

摘要翻译： 本文描述了一种连续生产环氧化物的方法，抑制氯化副产物的形成，并且消除或显着减少废水排放。 该方法包括：（a）形成低氯化物次氯酸水溶液; （b）将低氯化物次氯酸水溶液与至少一种不饱和有机化合物接触以形成至少含有氯代醇的含水有机产物; （c）至少使烯丙基氯醇与碱金属氢氧化物水溶液接触以形成至少含有环氧化物的盐水溶液产物; 和（d）从盐水溶液中分离环氧化物; 其中从至少步骤（b）的产物中回收水并再循环到步骤（a）中，以用于形成低氯酸盐次氯酸水溶液。 在这个过程中，不仅在步骤（b）之后内部循环的水，而且在步骤（a）和（d）中产生浓缩的盐水溶液，其可用于其它方法如氯和苛性碱的电化学生产。 然后将氯和苛性碱又可循环回本发明的方法。