一种硝酸烷基酯的安全生产方法
    116.
    发明申请

    公开(公告)号:WO2014086065A1

    公开(公告)日:2014-06-12

    申请号:PCT/CN2012/087148

    申请日:2012-12-21

    Inventor: 徐德良 毛恒涛

    CPC classification number: C07C201/02 C07C203/04

    Abstract: 本发明提供一种硝酸烷基酯的生产方法,以离心萃取设备为酯化反应分离器,使含有硫酸和硝酸的混合酸溶液从离心萃取设备的重相入口进入,使烷基醇从离心萃取设备的轻相入口进入,烷基醇与硝酸的进料摩尔比为1:1.0-3.0,混合酸与烷基醇在10~60 ℃的温度和800-2000转/分的转速下进行酯化反应;生成的粗酯和废酸在离心力的作用下分为轻相和重相,轻相粗酯经离心萃取器的轻相出口被排出,重相废酸经离心萃取器的重相出口被排出;粗酯经常规碱洗和水洗后,脱水干燥、净化,得到精制的硝酸烷基酯。本发明的方法使酯化反应、反应产物与废酸的分离在同一反应器内同时完成,极大地缩短了反应产物与废酸的接触时间,有效地避免了副反应的发生,从根本上保证了酯化过程的安全。

    PROCESS FOR THE PRODUCTION OF ESTERS OF NITRIC ACID
    117.
    发明申请
    PROCESS FOR THE PRODUCTION OF ESTERS OF NITRIC ACID 审中-公开
    制备硝酸酯的方法

    公开(公告)号:WO2011120695A1

    公开(公告)日:2011-10-06

    申请号:PCT/EP2011/001615

    申请日:2011-03-31

    CPC classification number: C07C201/02 C07C203/04

    Abstract: Organic nitrates are prepared from mono-, di- or polyhydric alcohols by (i) simultaneously feeding a first continuous-flow microreactor unit with (a) concentrated nitric acid, (b) acetic anhydride, (c) optionally, a catalytic amount of a strong inorganic acid other than nitric acid, and (d) optionally, a solvent, to obtain a solution of acetyl nitrate, and (ii) simultaneously feeding a second continuous-flow microreactor with the solution of acetyl nitrate obtained in step (i) and said mono-, di- or polyhydric alcohol in liquid form or dissolved in a solvent to obtain a solution of said organic nitrate, and (iii) optionally, isolating said organic nitrate from the solution obtained in step (ii). The process of the invention is particularly suited for mono-nitration of dihydric alcohols such as 1,4-butanediol.

    Abstract translation: 通过(i)同时向第一连续流微反应器单元(a)浓缩硝酸,(b)乙酸酐,(c)任选地,催化量的 除硝酸之外的强无机酸,和(d)任选的溶剂,以获得硝酸乙酰酯溶液,和(ii)同时向第二连续流微反应器中加入步骤(i)中获得的乙酰硝酸溶液和 所说的液体形式的一元,二元或多元醇或溶解在溶剂中以得到所说的有机硝酸盐溶液,和(iii)任选地从步骤(ii)中得到的溶液中分离出所说的有机硝酸盐。 本发明的方法特别适用于二元醇如1,4-丁二醇的单硝化。

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