Methylamines purification by distillation and purge

Details Methylamines purification by distillation and purge Methylamines purification by distillation and purge

1980-04-03

1981-08-11

Bascomb, Jr., Wilbur L.

Distillation: processes, separatory

Including purging of the system

203 43, 203DIG19, 564497, B01D 314, C07C 8526

Patent

active

042832543

ABSTRACT:
An improvement in the distillative refining of methylamines containing higher amine impurities wherein the higher amines accumulate in the distillation column, tending to cause flooding and product contamination. The improvement involves purging the column at the point the impurities concentrate, mixing the purge with water to form two phases, separating the phases and recycling the water phase for recovery of its methylamines content.

REFERENCES:
patent: 2180006 (1939-11-01), Hasche et al.
patent: 3304253 (1967-02-01), Lewis
patent: 3406100 (1968-10-01), Karafian
patent: 3445347 (1969-05-01), Borrel et al.
patent: 3692636 (1972-09-01), Huguet
patent: 3738915 (1973-06-01), DiFiore et al.
patent: 3850760 (1974-11-01), Lenel et al.

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