Distillation: processes – separatory – Distilling to separate or remove only water – From organic compound
Patent
1988-04-01
1989-10-17
Sever, Frank
Distillation: processes, separatory
Distilling to separate or remove only water
From organic compound
203DIG23, 568913, E01D 314
Patent
active
048744743
ABSTRACT:
A process is disclosed for the dehydration of a mixture of methanol and higher alcohols, containing 20 to 80% by weight of methanol, 1 to 60% by weight of at least a higher alcohol selected from those containing from 2 to 10 carbon atoms, 1 to 50% by weight of water and 0.1 to 10% by weight of hydrocarbons and/or of oxygen-containing organic compounds different from alcohols, which process comprises the following steps: p0 (a) feeding to a first rectification tower the mixture of methanol and higher alcohols to be dehydrated, a gaseous stream being discharged from the tower head, which contains a portion of the hydrocarbons and/or of the oxygen-containing organic compounds different from the alcohols; from a side point at a level higher than 2/3 of the tower height, a stream containing methanol and possibly ethanol being drawn; and from the tower bottom a stream being obtained with a methanol, and possibly ethanol, and having a content not larger than 10% by weight;
REFERENCES:
patent: 4210495 (1980-07-01), Pinto
patent: 4256541 (1981-03-01), Muller et al.
Cianci Flavio
Rescalli Carlo
Ricci Riziero
Scazzosi Adriano
Sever Frank
Snamprogetti S.p.A.
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