发明名称 |
Production of alkylene glycols |
摘要 |
According to the present invention an impure liquid containing ethylene glycol or propylene glycol, lower carboxylate esters of the glycol, water, carboxylic acid and glycol-azeotroping agent is treated for removal of substantially all of said glycol-azeotroping agent by a process which comprises distilling the impure liquid in a distillation zone to form an overheads product comprising water and glycol-azeotroping agent and a bottoms product comprising the glycol, esters and carboxylic acid, which is substantially free of said glycol-azeotroping agent, said bottoms product containing water in an amount of at least about 1 weight percent of the amount of water passed to said distillation zone with said impure liquid.
|
申请公布号 |
US4187153(A) |
申请公布日期 |
1980.02.05 |
申请号 |
US19770851025 |
申请日期 |
1977.11.14 |
申请人 |
HALCON RESEARCH AND DEVELOPMENT CORP |
发明人 |
PELTZMAN, ALAN;YANG, CHARLES C |
分类号 |
C07C29/80;C07C27/00;C07C29/82;C07C31/20;C07C67/00;(IPC1-7):B01D3/36 |
主分类号 |
C07C29/80 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|