Process for the continuous separation of slightly volatile compo

Details Process for the continuous separation of slightly volatile compo Process for the continuous separation of slightly volatile compo

1981-12-16

1984-02-07

Sever, Frank

Distillation: processes, separatory

Plural distillations performed on same material

One a distillation under positive pressure or vacuum

203 77, 203 88, 203 93, 549250, B01D 306

Patent

active

044301634

ABSTRACT:
A process is provided for the continuous separation of slightly volatile components from a crude phthalic acid anhydride wherein a portion of the crude phthalic acid anhydride is compressed and heated before being reintroduced into a flash evaporator.

REFERENCES:
patent: 3011955 (1961-12-01), Brown
patent: 3380896 (1968-04-01), Scheiber et al.
patent: 3655521 (1972-04-01), Gehrken et al.
patent: 3699008 (1972-10-01), Brendt et al.
patent: 3886050 (1975-05-01), Deutner et al.

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