Purification of tetrahydrofuran by distillation

Details Purification of tetrahydrofuran by distillation Purification of tetrahydrofuran by distillation

1988-08-12

1990-03-27

Raymond, Richard L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549509, C07D30708

Patent

active

049122363

ABSTRACT:
Crude water-containing tetrahydrofuran is purified by distillation by a process in which the crude tetrahydrofuran is passed through three distillation columns, water being removed from the bottom of the first column, water-containing tetrahydrofuran being recycled from the top of the second column into the first column, the top product of the third column being recycled to the first column, a distillate being removed at the top of the first column, and pure tetrahydrofuran being distilled off from the bottom product of the second column, in the third column, and the pure tetrahydrofuran being removed from the side take-off of the third column.

REFERENCES:
patent: 4093633 (1978-06-01), Tanabe et al.
patent: 4332645 (1982-06-01), Muller et al.

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