发明名称 |
Acetofenon avlägsnad från fenolreningsrester |
摘要 |
<p>A process for separating phenol obtained by the decomposition of cumene hydroperoxide from high boiling impurities, includes the following steps: a) feeding phenol rectification bottoms comprising phenol, acetophenone, cumylphenol, alpha-methylstyrene dimers and high boiler residues to a first phenol freeing distillation column A; b) feeding concentrated bottoms with substantially reduced phenol content from column A to a second residue concentration distillation column B; c) withdrawing a stream rich in compounds boiling between phenol and residue, particularly cumylphenol, from said column B from a point below the feed and returning at least a portion of said stream to said column A at a point above the feed; d) recovering overheads from column A comprising at least 95 weight percent phenol; and e) recovering acetophenone-rich overheads from column B comprising at least 70 weight percent acetophenone.</p> |
申请公布号 |
FI940881(A0) |
申请公布日期 |
1994.02.25 |
申请号 |
FI19940000881 |
申请日期 |
1994.02.25 |
申请人 |
ALLIED-SIGNAL INC. |
发明人 |
CHAN, CHONG HUI;CRESCENTINI, LAMBERTO;HINTON, JR., EVERETT HAWTHORNE;BALINT, LASZLO JOSEPH |
分类号 |
C07C49/78;B01D3/10;C07C37/74;C07C37/80;C07C39/04;C07C45/82;(IPC1-7):C07C |
主分类号 |
C07C49/78 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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