Distillation: processes – separatory – Water purification only – Under pressure or vacuum
Patent
1994-12-28
1996-03-19
Bascomb, Jr., Wilbur
Distillation: processes, separatory
Water purification only
Under pressure or vacuum
203 73, 203 78, 203 79, 203 84, 203 85, 203 88, 210180, 570262, B01D 306, C02F 106
Patent
active
055000975
ABSTRACT:
The present invention provides a method for removing an organic compound in water at a high efficiency by separating an organic compound, particularly such an organic chlorine compound as 1,2-dichloroethane, carbon tetrachloride and chloroform dissolved in water or forming two liquid phases with water from a water phase, by the steps of:
(i) charging water containing an organic compound into a first distillation column for conducting distillation or steam distillation to take the organic compound and water out of the top of the first distillation column and to obtain a bottom liquor containing the organic compound at a lower content from the bottom of the first distillation column, and
(ii) charging the bottom liquor of the first distillation column into a second distillation column operated at a pressure lower than that in the first distillation column for conducting distillation, preferably flashing under reduced pressure, to take a gas distillate containing a large amount of the organic compound out of the top of the second distillation column and to obtain a bottom liquor containing the organic compound at such a content as to be lower than the organic compound content in the charged liquor from the bottom of the second distillation column.
REFERENCES:
patent: 2589212 (1952-03-01), Agapetus et al.
patent: 3488398 (1970-01-01), Harpring et al.
patent: 3634200 (1972-01-01), Obrecht et al.
patent: 4057472 (1977-11-01), Toriya et al.
patent: 4177111 (1979-12-01), Pieper et al.
patent: 4747914 (1988-05-01), Schwarzmaier et al.
patent: 5294303 (1994-03-01), Robbins et al.
The Institution of Chemical Engineers, Symposium Series No. 104, 1987, pp. B284-B289, "Distillation and Absorption 1987".
Fujimaki Seiichi
Itoyama Kazutoshi
Yamamoto Shinji
Bascomb, Jr. Wilbur
Mitsubishi Chemical Corporation
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