摘要 |
<p>Disclosed is a process and an apparatus for separating and purifying tert-alkyl (alcohol) ether by combinational distillation-extraction, wherein, the raw material is a to-be-separated mixture of tert-alkyl (alcohol) ether which is obtained by etherification of C1 aliphatic monohydric alcohol or C1-2 aliphatic monohydric alcohol with a water content from at least more than 1 wt.% to at most 15 wt.% and an isoolefin with at least four carbon atoms, and the process described is the combinational distillation-extraction. In the process, the utilization ratio of the isoolefin is improved. In addition, in the whole separation and purification process, the qualified tert-alkyl (alcohol) ether comprising less than 1 wt.% of the C1-2 aliphatic monohydric alcohol can be obtained by adding only one extraction zone. Moreover, in the process, the cost is decreased, and the ethanol with a water content from at least more than 1 wt.% to at most 15wt% can be used as the raw material in the etherification reaction, thereby the process have high commercial benefit.</p> |
申请人 |
EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY;ZHANG, WUPING;ZHANG, WENLI;ZHOU, SHANHUA;TIAN, HENGSHUI;ZHANG, HANLU;ZHU, FUGENG;JIANG, ZHAO;GU, JINGJUN |
发明人 |
ZHANG, WUPING;ZHANG, WENLI;ZHOU, SHANHUA;TIAN, HENGSHUI;ZHANG, HANLU;ZHU, FUGENG;JIANG, ZHAO;GU, JINGJUN |