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Separation of methyl t-butyl ether from close boiling C[sub 5] hydrocarbons by extractive distillation

Patent ·
OSTI ID:6419990
A method for recovering methyl t-butyl ether from a mixture of methyl t-butyl ether and 1-pentene which comprises distilling a mixture of methyl t-butyl ether and 1-pentene in the presence of about one part of an extractive agent per part of methyl t-butyl ether -- 1-pentene mixture, recovering the 1-pentene as overhead product and obtaining the methyl t-butyl ether and the extractive agent from the still pot, wherein said extractive agent consists of one material selected from the group consisting of sulfolane, nitroethane, t-butanol, ethylene glycol diacetate, 1-methoxy-2-propanol acetate, methyl isoamyl ketone, ethylene glycol methyl ether, propylene glycol phenyl ether and diethyl malonate.
Assignee:
Lloyd Berg, Bozeman, MT (United States)
Patent Number(s):
A; US 5228957
Application Number:
PPN: US 8-002505
OSTI ID:
6419990
Country of Publication:
United States
Language:
English