公开(公告)号：US09228156B2

公开(公告)日：2016-01-05

申请号：US14407862

申请日：2013-05-23

申请人： Johnson Matthey Davy Technologies Limited

发明人： Robert Wild ,  Rickard Umberto Andersson

IPC分类号： C11C3/00 ,  C11C1/00

CPC分类号： C11C3/003 ,  C11C1/00 ,  Y02E50/13

摘要： In a process for producing fatty acid esters, a fatty acid or fatty acid mixture is subjected to esterification with a lower alkanol in an esterification reactor maintained under esterification conditions to form a stream comprising the corresponding lower alkyl ester(s). An overhead stream comprising unreacted lower alkanol, water and a heavy organic content of one or more of lower alkyl ester and/or acids is recovered from the reactor. The overhead stream is subjected to distillation in a first distillation column to separate a portion of the lower alkanol from a stream comprising the water, the remaining lower alkanol and the heavy organic content. This stream is recovered and subjected to distillation in a second distillation column to provide an overhead stream comprising lower alkanol and at least a major portion of the heavy organic content and a water stream having a reduced heavy organic and alkanol content.

摘要翻译： 在制备脂肪酸酯的方法中，脂肪酸或脂肪酸混合物在维持在酯化条件下的酯化反应器中用低级链烷醇进行酯化，形成包含相应的低级烷基酯的物流。 从反应器回收包含未反应的低级链烷醇，水和一种或多种低级烷基酯和/或酸的重质有机含量的塔顶物流。 将顶部物流在第一蒸馏塔中进行蒸馏以从包含水，剩余的低级链烷醇和重的有机物含量的物流中分离一部分低级链烷醇。 将该料流回收并在第二蒸馏塔中进行蒸馏以提供包含低级链烷醇和至少大部分重质有机物含量的塔顶料流和具有降低的重的有机和链烷醇含量的水流。