公开(公告)号：US08912358B2

公开(公告)日：2014-12-16

申请号：US14052863

申请日：2013-10-14

申请人： Noel Hallinan ,  Brian A. Salisbury ,  Shao-hua Guo

发明人： Noel Hallinan ,  Brian A. Salisbury ,  Shao-hua Guo

IPC分类号： C07C51/42 ,  C07C51/14 ,  C07C51/12 ,  C07C51/44 ,  C07C51/48

CPC分类号： C07C51/12 ,  C07C51/445 ,  C07C51/48 ,  C07C53/08

摘要： A method for removing hydrocarbon impurities from an acetic acid production intermediate is disclosed. The method comprises extracting the intermediate with a hydrocarbon extracting agent. The extraction is preferably performed with the alkane distillation bottom stream which comprises methyl iodide, acetic acid, and hydrocarbon impurities. The extraction forms a light phase which comprises the hydrocarbon impurity and the extracting agent and a heavy phase which comprises methyl iodide and acetic acid. The extraction heavy phase is optionally recycled to the alkane distillation or to the carbonylation reaction.

摘要翻译： 公开了从乙酸生产中间体中除去烃杂质的方法。 该方法包括用烃提取剂萃取中间体。 萃取优选用包括甲基碘，乙酸和烃杂质的烷烃蒸馏塔底料进行。 提取形成包含烃杂质和萃取剂的轻相，以及包含甲基碘和乙酸的重相。 提取重相可选地循环到烷烃蒸馏或羰基化反应。