申请人:Lucite International UK Limited
公开号:US20150099896A1
公开(公告)日:2015-04-09
A continuous process for the production of an alkyl ester product is described. The process includes the steps of carbonylating ethylene with carbon monoxide in the presence of C1-6 alkanol co-reactant to form the alkyl ester product. The carbonylation takes place in the presence of a catalyst system that includes (a) a bidentate ligand, (b) a catalytic metal selected from a group 8, 9 or 10 metal or a compound thereof, and (c) a sulphonic acid capable of forming an acid alkyl ester with the C1-6 alkanol. The process includes the step of separating the alkyl ester product from a carbonylated crude product stream by treatment effective to vaporizing the alkyl ester product in a single stage flash distillation column and providing a purified alkyl ester product stream separated from the bidentate ligand and catalytic metal.
描述了一种生产烷基酯产品的连续过程。该过程包括以下步骤:在C1-6烷醇共反应剂的存在下,将乙烯与一氧化碳进行羰基化反应,形成烷基酯产品。羰基化反应发生在包括(a)双齿配体、(b)选择自第8、9或10族金属或其化合物的催化金属和(c)能够与C1-6烷醇形成酸性烷基酯的磺酸的催化剂系统存在下。该过程包括将烷基酯产品从羰基化粗产品流中分离出来的步骤,通过处理有效地在单级闪蒸塔中蒸发烷基酯产品,并提供从双齿配体和催化金属分离出来的纯化的烷基酯产品流。