Reduction in chemical oxygen demand of water from crude tetrahyd

Details Reduction in chemical oxygen demand of water from crude tetrahyd Reduction in chemical oxygen demand of water from crude tetrahyd

1978-03-22

1980-04-08

Bascomb, Jr., Wilbur L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

203 14, 203 37, 203 42, B01D 334, C07D30708

Patent

active

041972481

ABSTRACT:
A process for reducing the chemical oxygen demand of water removed from a mixture of crude tetrahydrofuran and water, said process comprising contacting said mixture in the vapor phase with a dilute sodium hydroxide solution, then optionally contacting the tetrahydrofuran-water mixture after condensation with a concentrated sodium hydroxide solution and separating water from the thus treated mixture, said water having reduced chemical oxygen demand over water that is removed from said mixture merely by distillation.

REFERENCES:
patent: 1466435 (1923-08-01), Hammond
patent: 2251835 (1941-04-01), Reppe et al.
patent: 2366464 (1945-01-01), Wilson
patent: 2485329 (1949-10-01), Steele
patent: 2779721 (1957-01-01), Houtmann et al.
patent: 3138545 (1964-06-01), Reed et al.
patent: 3410760 (1968-11-01), Craig et al.
patent: 3694465 (1972-09-01), Kisaki et al.
patent: 3726905 (1973-04-01), Coates et al.
Equilibrium in the Systems of Tetrahydrofuran-Water-Alkali Metal Salts: Kisaki et al., 1972, Translation.

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