Manufacture of t-butanol
    44.
    发明授权
    Manufacture of t-butanol 失效
    制造叔丁醇

    公开(公告)号:US3950442A

    公开(公告)日:1976-04-13

    申请号:US586540

    申请日:1975-06-13

    IPC分类号: C07C29/06

    CPC分类号: C07C29/06

    摘要: Process for the manufacture of t-butanol by hydration of isobutylene by reaction of isobutylene or isobutylene-containing C.sub.4 -hydrocarbon mixtures at moderately elevated temperature with aqueous sulfuric acid and isolation of the t-butanol from the resulting solution of t-butanol in water and sulfuric acid, wherein the reaction is carried out at temperatures of from 20.degree. to 45.degree.C using 20-48% w/w aqueous sulfuric acid, the t-butanol being separated from the t-butanol solution in water and sulfuric acid by extraction, at temperatures of from 0.degree. to 50.degree.C, with saturated or mono-olefinically or di-olefinically unsaturated aliphatic or cycloaliphatic hydrocarbons containing at least 3 carbon atoms or with aromatic hydrocarbons of from 6 to 10 carbon atoms or with a mixture of said hydrocarbons, whereupon the t-butanol is isolated from the extracted mixture of t-butanol and hydrocarbon or hydrocarbon mixture.

    摘要翻译: 通过在适当升高的温度下与含水硫酸反应异丁烯或含异丁烯的C 4烃混合物,通过使异丁烯水合而制备叔丁醇的方法,并将叔丁醇从所得到的叔丁醇溶液在水中分离出来, 硫酸,其中反应在20-45℃的温度下用20-48%w / w硫酸水溶液进行,叔丁醇通过萃取与水和硫酸从叔丁醇溶液中分离出来 在0℃至50℃的温度下,含有至少3个碳原子的饱和或单烯属或二烯属不饱和脂族或脂环烃或具有6至10个碳原子的芳烃或与所述 烃,因此从提取的叔丁醇和烃或烃混合物的混合物中分离出叔丁醇。

    Preparation of butane-1,4-diol
    45.
    发明授权
    Preparation of butane-1,4-diol 失效
    丁烷-1,4-二醇的制备

    公开(公告)号:US4361710A

    公开(公告)日:1982-11-30

    申请号:US347580

    申请日:1982-02-10

    CPC分类号: C07C29/177

    摘要: A process for the preparation of butane-1,4-diol by catalytic hydrogenation of a mixture obtained by treating maleic anhydride with an aliphatic alcohol at elevated temperatures, wherein a monohydric or dihydric aliphatic alcohol of boiling point above 180.degree. C. is used and the mixture of maleic acid and the alcohol is obtained by washing a gaseous reaction mixture, which contains maleic anhydride and is obtained in the catalytic oxidation of hydrocarbons by air, with the alcohol.

    摘要翻译: 通过催化氢化制备丁烷-1,4-二醇的方法,其通过在高温下用脂族醇处理马来酸酐得到的混合物,其中使用沸点高于180℃的一元或二元脂族醇, 马来酸和醇的混合物通过洗涤含有马来酸酐的气态反应混合物而获得,并且通过空气与醇催化氧化烃获得。

    Recovery of 1,3-butadiene from a C.sub.4 -hydrocarbon mixture
    48.
    发明授权
    Recovery of 1,3-butadiene from a C.sub.4 -hydrocarbon mixture 失效
    从C {HD 4 {B-烃混合物中回收1,3-丁二烯

    公开(公告)号:US4049742A

    公开(公告)日:1977-09-20

    申请号:US669710

    申请日:1976-03-23

    CPC分类号: C07C7/005 C07C7/163

    摘要: 1,3-Butadiene is recovered with the aid of a selective solvent from a C.sub.4 -hydocarbon mixture containing 1,3-butadiene, hydrocarbons which are more soluble in said selective solvent than 1,3-butadiene, including acetylenes and possibly 1,2-butadiene and C.sub.5 -hydrocarbons, and hydrocarbons which are less soluble in said selective solvent than 1,3-butadiene. The C.sub.4 -hydrocarbon mixture is separated by the use of one or more extractive distilling zones into a distillate containing the less soluble hydrocarbons, a stream consisting of 1,3-butadiene and a stream containing the more soluble hydrocarbons including the higher acetylenes and 1,3-butadiene, the latter stream being subjected to catalytic hydrogenation.

    摘要翻译: 借助于来自含有1,3-丁二烯的C4-碳氢化合物混合物的选择性溶剂回收1,3-丁二烯,在所述选择性溶剂中比1,3-丁二烯更可溶的烃,包括乙炔和可能的1,2- 丁二烯和C 5烃,以及比1,3-丁二烯更不溶于所述选择性溶剂的烃。 通过使用一个或多个萃取蒸馏区将C4烃混合物分离成含有较不溶性烃的馏出物,由1,3-丁二烯组成的物流和含有较可溶性烃的物流,包括较高乙炔和1, 3-丁二烯,后一个流进行催化氢化。