发明名称 |
PROCESS FOR RECOVERING GAMMA-BUTYROLACTONE FROM A MIXTURE OFHEAVY ORGANICS |
摘要 |
Gamma-Butyrolactone (GBL) is recovered from a mixture containing GBL and other heavy organics by a process of azeotropic distillation in the presence of a C8-C10 hydrocarbon as an azeotroping agent, wherein an azeotrope of GBL and the hydrocarbon is obtained as a distillate, which forms immiscible GBL-rich and hydrocarbon-rich phases, and the hydrocarbon-rich phase is decanted or isolated from the GBL-rich phase. By this process GBL can be efficiently separated from a large proportion of various compounds having boiling points close to that of GBL, e.g., the methyl-.gamma.-butyrolactones (MeGBL's).
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申请公布号 |
CA2310707(A1) |
申请公布日期 |
2000.12.15 |
申请号 |
CA20002310707 |
申请日期 |
2000.06.06 |
申请人 |
CELANESE INTERNATIONAL CORPORATION |
发明人 |
GERBERICH, H. ROBERT;GARRETT-WALLACE, NICOLE;SITZ, DEBORAH A.;WINDHORST, KENNETH A.;WARNER, R. JAY |
分类号 |
B01D3/36;C07D315/00;(IPC1-7):C07D307/33 |
主分类号 |
B01D3/36 |
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