Distillation: processes – separatory – Adding material to distilland except water or steam per se – Organic compound
Patent
1980-01-24
1981-06-09
Sever, Frank
Distillation: processes, separatory
Adding material to distilland except water or steam per se
Organic compound
568835, B01D 334
Patent
active
042723264
ABSTRACT:
A process in which a mixture including phenol, cyclohexanone and cyclohexanol is fed to a point intermediate the top and bottom of a distillation column, an overhead stream comprising cyclohexanone and cyclohexanol is withdrawn from a point adjacent the top of the column and a bottoms stream comprising phenol is withdrawn from adjacent the bottom of the column. By feeding additional cyclohexanone to a point below where the mixture is fed, the cyclohexanone content of the bottoms is reduced. The process is useful in separating chemicals used in producing cyclohexanone from phenol for manufacturing caprolactam, a polyamide monomer, or for other purposes.
REFERENCES:
patent: 2857432 (1958-10-01), Joris
patent: 2873296 (1959-02-01), Nilsson et al.
patent: 3592859 (1971-07-01), Marcell
patent: 4187152 (1980-02-01), Roth et al.
Azeotropic Data-II, No. 35, Advances in Chemistry Series, ACS, 1962, p. 50.
Azeotropic Data, No. 6, Advances in Chemistry Series, ACS, 1952, p. 167.
Azeotropic Data-III; Advances in Chemistry Series 116; ACS, 1973, p. 339.
Hertzog Richard R.
Zudkevitch David
Allied Chemical Corporation
Doernberg Alan M.
Fuchs Gerhard H,.
Sever Frank
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