Distillation: processes – separatory – Adding material to distilland except water or steam per se – At least two materials
Patent
1985-07-15
1986-07-22
Bashore, S. Leon
Distillation: processes, separatory
Adding material to distilland except water or steam per se
At least two materials
203 58, 203 60, 203 63, 203 57, 568913, B01D 340
Patent
active
046017917
ABSTRACT:
N-propanol and allyl alcohol cannot be separated from each other by distillation because of the proximity of their boiling points. N-propanol can be readily separated from allyl alcohol by using extractive distillation in which the extractive agent is a higher boiling oxygenated, nitrogenous and/or sulfur containing organic compound or a mixture of two or more of these compound. Examples of effective agents are: dimethylsulfoxide; acetamide and ethylene glycol phenylether; adiponitrile; N,N-dimethylacetamide; dimethylformamide; and sulfolane.
REFERENCES:
patent: 2433323 (1947-12-01), Reiter et al.
patent: 2485694 (1949-10-01), Burchfield
patent: 2570205 (1951-10-01), Carlson et al.
patent: 2663679 (1953-12-01), Drout, Jr.
patent: 2663680 (1953-12-01), Robertson
Chemical Abstract, Filip et al., "Separation of Allyl Alcohol from N-propyl Alcohol by Extractive Rectification", vol. 81, 1974, p. 419.
Chemical Abstract, Filip et al., "Separation of Allyl and Propyl Alcohols by Extractive Fractionation"; vol. 80, 1974, p. 375.
Berg Lloyd
Vosburgh Mark G.
Bashore S. Leon
Manoharan V.
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