Distillation: processes – separatory – With chemical reaction – Including step of adding catalyst or reacting material
Patent
1986-04-24
1988-02-02
Bashore, S. Leon
Distillation: processes, separatory
With chemical reaction
Including step of adding catalyst or reacting material
203 37, 203 94, 203 98, 203 99, 203DIG6, 203DIG18, 203DIG19, 568411, B01D 334, B01D 342
Patent
active
047227699
ABSTRACT:
This invention is a process for purifying crude acetone obtained by cleavage of cumene hydroperoxide, said crude acetone containing aldehyde impurities and appreciable amounts of unreacted cumene, by fractionally distilling the acetone in a multiple plate distillation column, said process comprising: continuously feeding crude acetone; continuously feeding a dilute aqueous solution of an alkaline material at a point above the crude acetone feed point; and controlling the temperature profile of the column by adjusting the amount of liquid acetone removed in step (c) to maintain a preselected temperature on a plate in the region between the crude acetone feed point and the alkaline material feed point.
REFERENCES:
patent: 2737480 (1956-03-01), Adams et al.
patent: 2906675 (1959-09-01), Hall et al.
patent: 3668256 (1972-06-01), Brundege
patent: 3672961 (1972-06-01), Nixon, Jr.
patent: 4340447 (1982-07-01), Laverick et al.
Chan Chong H.
Crescentini Lamberto
Hinton, Jr. Everett H.
Allied Corporation
Bashore S. Leon
Manoharan V.
Thrower William H.
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