Distillation: processes – separatory – Plural distillations performed on same material – One a filming distillation
Patent
1994-06-09
1995-10-31
Manoharan, Virginia
Distillation: processes, separatory
Plural distillations performed on same material
One a filming distillation
159 5, 159 49, 159DIG10, 159DIG16, 202154, 202205, 203 73, 203 78, 203DIG9, 548555, B01D 100, B01D 300
Patent
active
054626439
ABSTRACT:
Reprocessing mixtures which contain organic solvents and constituents of low volatility and may contain water: includes introducing the mixture into a concentration apparatus of a solvent recovery system, concentrating the mixture in the concentration apparatus by evaporating off a portion of a readily volatile fraction and feeding this readily volatile fraction to a separation column. A portion of the concentrated mixture from the concentration apparatus is conducted away into a separation apparatus where the constituents of low volatility are separated off from the concentrated mixture and ejected from the solvent recovery system. The concentrated mixture is conducted away, freed from the constituents of low volatility, from the separation apparatus.
REFERENCES:
patent: 4141799 (1979-02-01), Thelen et al.
patent: 4308112 (1981-12-01), Jupe et al.
patent: 4317926 (1982-03-01), Sato et al.
patent: 4323431 (1982-04-01), Takahashi et al.
patent: 4652343 (1987-03-01), Sridhar
patent: 5252187 (1993-10-01), Ohtsu et al.
Patent Abstracts of Japan, vol. 11, No. 18 Jan, 17, 1987.
Heinrich Karl
Miess Georg-Emerich
Rewitzer Siegfried
Roth Peter M.
Hoechst Aktiengesellschaft
Manoharan Virginia
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