发明名称 |
Purification of difluoromethane |
摘要 |
A method for separating difluoromethane from a mixture of difluoromethane and at least one impurity, the method involving extractively distilling the mixture using dichloromethane as an extractive agent to recover a product stream of purified difluoromethane having a concentration of impurity lower than that of the mixture.
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申请公布号 |
US7189311(B2) |
申请公布日期 |
2007.03.13 |
申请号 |
US20010816529 |
申请日期 |
2001.03.23 |
申请人 |
HONEYWELL INTERNATIONAL INC. |
发明人 |
CLEMMER PAUL G. |
分类号 |
B01D3/40;B01D3/42;C07C17/20;C07C17/21;C07C17/383;C07C17/386;C07C19/08 |
主分类号 |
B01D3/40 |
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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