发明名称 |
Process for the distillation of crude ester in the DMT/PTA process |
摘要 |
A process for purifying a crude ester containing dimethyl terephthalate, includes flash distilling a mixture including para-xylene and methyl para-toluate, and separating the crude ester into fractions. By separating the crude ester with a distillation column containing structured packing and using a lower bottom temperature, product yield is increased, and the process is made more economical.
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申请公布号 |
US6096171(A) |
申请公布日期 |
2000.08.01 |
申请号 |
US19980076741 |
申请日期 |
1998.05.13 |
申请人 |
HUELS AKTIENGESELLSCHAFT |
发明人 |
LENZ, UDO;NEUTZLER, ULRICH;SCHOENGEN, ANTON;SIGG, REINHARD |
分类号 |
C07C67/08;B01D3/06;B01D3/14;C07C67/39;C07C67/48;C07C67/54;C07C69/82;(IPC1-7):B01D3/06 |
主分类号 |
C07C67/08 |
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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