发明名称 |
REMOVING HYDROCARBON IMPURITIES FROM ACETIC ACID PRODUCTION PROCESS |
摘要 |
A method for removing hydrocarbon impurities from an acetic acid production process is disclosed. The method comprises distilling at least a portion of the heavy organic phase from the decanter of the acetic acid production process into a vapor stream comprising the majority of methyl iodide (i.e., over 50% of the methyl iodide from the heavy organic phase) and a bottoms stream comprising the majority of acetic acid, methyl acetate, methyl iodide and the hydrocarbon impurity (i.e., over 50% of each of the components from the heavy organic phase); extracting the bottoms stream with water, an acetic acid aqueous solution, or with a methanol aqueous solution to form an organic phase comprising the majority of the hydrocarbon impurity (over 50% of the hydrocarbon impurity from the bottom stream) and an aqueous phase comprising the majority of methyl iodide (over 50% of the methyl iodide from the bottoms stream); and recycling the aqueous phase to the carbonylation reaction. |
申请公布号 |
WO2009117055(A1) |
申请公布日期 |
2009.09.24 |
申请号 |
WO2009US01488 |
申请日期 |
2009.03.09 |
申请人 |
LYONDELL CHEMICAL TECHNOLOGY, L.P. |
发明人 |
HALLINAN, NOEL, C.;SALISBURY, BRIAN, A. |
分类号 |
C07C51/48;C07C17/38 |
主分类号 |
C07C51/48 |
代理机构 |
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代理人 |
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地址 |
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