公开(公告)号：US4252748A

公开(公告)日：1981-02-24

申请号：US974291

申请日：1978-12-29

Applicant: Robert Hoch ,  James Leacock ,  Chee-Gen Wan

Inventor： Robert Hoch ,  James Leacock ,  Chee-Gen Wan

IPC: C07C49/08 ,  C07C45/00 ,  C07C45/49 ,  C07C45/80 ,  C07C45/82 ,  C07C45/84 ,  C07C51/44 ,  C07C51/573 ,  C07C67/00 ,  C07C69/12

CPC classification number: C07C51/44 ,  C07C45/49 ,  C07C45/80 ,  C07C45/82 ,  C07C45/84 ,  C07C51/573

Abstract: Acetone produced as a by-product in the reaction of methyl acetate with carbon monoxide and hydrogen in the presence of a Group VIII noble metal catalyst and methyl iodide is recovered from the reaction mixture by supplying acetone to provide an acetone to methyl iodide molar ratio of at least 1:10 and distilling the mixture comprising methyl iodide, acetone and methyl acetate to separate substantially all of the methyl iodide and the supplied acetone and some of the methyl acetate from the remaining acetone and methyl acetate and thereafter separating the acetone from the methyl acetate.

Abstract translation: 在第VIII族贵金属催化剂和甲基碘存在下，乙酸甲酯与一氧化碳和氢气在乙酸甲酯和氢气的反应中作为副产物产生的丙酮通过供应丙酮从反应混合物中回收，得到丙酮至甲基碘的摩尔比 至少1:10，并蒸馏含有甲基碘，丙酮和乙酸甲酯的混合物，从剩余的丙酮和乙酸甲酯中分离基本上所有的甲基碘和所提供的丙酮和一些乙酸甲酯，然后将丙酮从甲基 乙酸盐。

公开(公告)号：US4241219A

公开(公告)日：1980-12-23

申请号：US61712

申请日：1979-07-30

Applicant: Chee-Gen Wan

Inventor： Chee-Gen Wan

IPC: C07C53/12 ,  C07C51/00 ,  C07C51/12 ,  C07C51/56 ,  C07C67/00

CPC classification number: C07C51/12 ,  C07C51/56

Abstract: In the carbonylation of esters and/or ethers the reaction mixture is separated into fractions to recover components therefrom, gases are withdrawn from the system and halogen values are recovered from said gases by contact with a component recovered from said reaction mixture.

Abstract translation: 在酯和/或醚的羰基化反应中，将反应混合物分离成馏分以从其中回收组分，从系统中取出气体，并通过与从所述反应混合物回收的组分接触从所述气体中回收卤素值。

公开(公告)号：US4497967A

公开(公告)日：1985-02-05

申请号：US621271

申请日：1984-06-15

Applicant: Chee-Gen Wan

Inventor： Chee-Gen Wan

IPC: C07C29/136 ,  C07C27/00 ,  C07C29/149 ,  C07C29/32 ,  C07C31/08 ,  C07C67/00

CPC classification number: C07C29/149 ,  C07C51/56 ,  C07C67/08 ,  Y02P20/125 ,  Y02P20/582

Abstract: An integrated process for the preparation of ethanol from methanol, carbon monoxide and hydrogen feedstock is disclosed; the process featuring the steps of esterifying methanol and acetic acid to form methyl acetate; carbonylating the methyl acetate to form acetic anhydride; esterifying acetic anhydride with a lower aliphatic alcohol in an anhydrous zone to form the corresponding aliphatic acetate; hydrogenating the aliphatic acetate in a second anhydrous zone to form ethanol and the corresponding aliphatic alcohol; and separating the formed ethanol stream into an ethanol product stream and/or aliphatic alcohol recycle stream, which is recycled to react with acetic anhydride.

Abstract translation: 公开了从甲醇，一氧化碳和氢气原料制备乙醇的综合方法; 该方法的特征在于酯化甲醇和乙酸以形成乙酸甲酯的步骤; 羰基化乙酸甲酯以形成乙酸酐; 在无水区中用低级脂肪醇酯化乙酸酐以形成相应的脂族乙酸酯; 在第二无水区中使所述脂族乙酸酯加氢以形成乙醇和相应的脂族醇; 并将形成的乙醇流分离成乙醇产物流和/或脂肪醇再循环物流，其被再循环以与乙酸酐反应。

公开(公告)号：US4234719A

公开(公告)日：1980-11-18

申请号：US53612

申请日：1979-06-29

Applicant: Chee-Gen Wan

Inventor： Chee-Gen Wan

IPC: C07C51/56 ,  C08B3/06 ,  C07C51/15 ,  C07C51/54

CPC classification number: C08B3/06 ,  C07C51/56

Abstract: Cellulose acetate is produced from methanol, carbon monoxide and cellulose in an integrated series of steps wherein acetic anhydride produced in a first step by the carbonylation of methyl acetate is used to acetylate cellulose to produce cellulose acetate and to co-produce acetic acid, the co-produced acetic acid is dehydrated and the dehydrated acetic acid reacted with methanol to produce methyl acetate which is then fed to the first step and carbonylated to produce additional quantities of acetic anhydride.

Abstract translation: 乙酸纤维素以甲醇，一氧化碳和纤维素的一系列步骤生产，其中在第一步中通过羰基化乙酸甲酯生产的乙酸酐用于乙酰化纤维素以生产乙酸纤维素并共同生产乙酸，该共混物 脱水的乙酸被脱水，脱水的乙酸与甲醇反应生成乙酸甲酯，然后将其加入到第一步骤中，并进行羰基化以产生额外量的乙酸酐。