发明摘要生产醋酸的羰基化过程包括:(a)在族Ⅷ金属催化剂和甲基碘促进剂存在下,羰基化甲醇或它的反应衍生物生产液体反应混合物,混合物含有醋酸,水,醋酸甲酯和甲基碘;(b)在原料温度下将液体反应混合物加入闪蒸器,闪蒸器保持在减压条件下;(c)边加热闪蒸器,边同时闪蒸反应混合物生产粗产品蒸汽流,该过程中,选择反应混合物并控制反应混 SUMMARY OF THE INVENTION The carbonylation process for the production of acetic acid comprises: (a) hydroformylation of methanol or its reactive derivative in the presence of a Group VIII metal catalyst and a methyl iodide promoter to produce a liquid reaction mixture containing acetic acid, water, methyl acetate And methyl iodide; (b) feeding the liquid reaction mixture to a flasher at a feed temperature and maintaining the flasher under reduced pressure; (c) producing a crude product vapor stream while heating the flasher while flashing the reaction mixture, During the process, the reaction mixture is selected and the reaction mixture is controlled