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    • 106. 发明授权
    • Process for purifying and recovering catalyst solution contaminated
during the carbonylation of methyl acetate and/or dimethylether
    • 纯化和回收在乙酸甲酯和/或二甲醚羰基化过程中污染的催化剂溶液的方法
    • US4746640A
    • 1988-05-24
    • US25962
    • 1987-03-16
    • Heinz ErpenbachKlaus GehrmannWinfried Lork
    • Heinz ErpenbachKlaus GehrmannWinfried Lork
    • B01J38/00B01J31/40C07B61/00C07C51/00C07C51/12C07C53/12C07C67/00C07C67/37C07C69/14B01J38/68C07C51/56C07C67/36
    • B01J31/0268B01J31/0239B01J31/20B01J31/4046C07C51/42C07C51/48C07C51/573C07C67/48B01J2231/34B01J2531/822Y02P20/584
    • Catalyst solution contaminated during the carbonylation of methyl acetate and/or dimethylether. To this end, the contaminated catalyst solution is subjected in a first processing stage to extraction with a dialkylether and alkanol, each of which has from 1-4 carbon atoms per alkyl group, and thereby freed from its organic contaminants, from acetic acid, acetic anhydride and ethylidene diacetate, and the ether phase is separated from the purified promoter-containing catalyst solution; next, the ether phase is treated in a second processing stage with iodine and/or methyl iodide; the precipitated promoter containing catalyst complex is separated and dissolved in the purified catalyst solution coming from the first processing stage; the ether phase is separated into its constituents by distilling it; recovered dialkylether and alkanol are used again in the extraction stage; fresh catalyst solution is prepared from the recovered mixture of acetic acid, acetic anhydride and ethylidene diacetate and from the united purified catalyst solution while residual dialkylether and alkanol are distilled off, and the organic contaminants retained in the residue of the ether phase distillation are expelled.
    • 催化剂溶液在乙酸甲酯和/或二甲醚的羰基化过程中被污染。 为此,将污染的催化剂溶液在第一个处理阶段进行,用二烷基醚和链烷醇进行萃取,每个烷基烷基和烷醇每个烷基具有1-4个碳原子,从而从乙酸,乙酸中除去其有机污染物 酸酐和亚乙基二乙酸酯,并从纯化的含有助催化剂的催化剂溶液中分离出醚相; 接下来,乙醚相在碘和/或碘甲烷的第二个处理阶段进行处理; 将含有沉淀促进剂的催化剂配合物分离并溶解在来自第一处理阶段的纯化催化剂溶液中; 通过蒸馏将乙醚相分离成其成分; 在提取阶段再次使用回收的二烷基醚和链烷醇; 从回收的乙酸,乙酸酐和亚乙基二乙酸酯的混合物中制备新鲜的催化剂溶液,并从合并的纯化的催化剂溶液中蒸出残余的二烷基醚和链烷醇,并且保留在醚相蒸馏残余物中的有机污染物被排出。