Distillation: processes – separatory – Distilling to separate or remove only water – From organic compound
Patent
1974-07-09
1976-12-28
Sofer, Jack
Distillation: processes, separatory
Distilling to separate or remove only water
From organic compound
203 69, 203 39, 203 70, 260621A, 203 17, 203 18, B01D 334, C07B 500
Patent
active
040000443
ABSTRACT:
Separation by distillation and formation of immiscible liquid phases of nearly equal densities which comprises distilling a mixture containing the same in the presence of an added liquid of substantially different density, preferentially soluble in a recycle to the distillation zone and having a volatility under conditions of distillation such that it will vaporize preferentially to a liquid desired to be retained in the distillation zone to be removed as bottoms therefrom, e.g., toluene added to produce gravity separation of a heavy water-rich phase and a light phase containing phenol, cyclohexanone and cyclohexylbenzene and the added toluene which is used as reflux to the drying column in the overall process in which cyclohexanone and phenol are produced from cyclohexylbenzene.
REFERENCES:
patent: 2286056 (1942-06-01), Brown
patent: 2573244 (1951-10-01), Bogart et al.
patent: 2729599 (1956-01-01), Ohsol et al.
patent: 2745882 (1956-05-01), Hale
patent: 2762760 (1956-09-01), Walker
patent: 3509028 (1970-04-01), Budd et al.
L. H. Horsley, Azeotropic Data III, 1973, pp. 28, 29, 31, 33-35.
Phillips Petroleum Company
Sofer Jack
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