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US 4,374,705 AGranted
Distillation for alcohol
AssigneeChisso Engineering Co. Ltd.
InventorsKiyoshi Sawai, Takao Kawase
Life of this patent
Estimating the term…
Abstract
A new distillation equipment for alcohol which consists mainly of a brief concentrating column A, a concentrating column B, a compressor C to compress alcohol vapor generated in column B and water evaporator D heated by the compressed alcohol vapor is developed and this especially fits for a distillation source of a glue like solution obtained by alcohol fermentation because steam generated in the water evaporator D is directly blown into the solution in the concentrating column A.
Claims4
A process for the distillation of alcohol from a glue-like raw alcohol containing solution which comprises:
- providing a distillation equipment comprising:
- first concentrating column means to generate alcohol vapor from glue-like raw alcohol containing liquid;
- second concentrating column means to concentrate alcohol vapor generated in the first concentrating column means;
- compressor means to compress the alcohol vapor generated in the second concentrating column means to a vapor having a temperature of about 118.degree. C. and a pressure of 3-5 atm/G.;
- water evaporator means to generate steam having a temperature of about 106.degree. C. and a pressure of 0.3 atm/G. by heat exchanging of water with the alcohol vapor compressed in the compressor means;
- said first concentrating column means having a raw alcohol containing liquid introducing pipe, a distillation residue discharging pipe and a steam inlet pipe;
- an alcohol vapor conducting pipe and a refluxing liquid conducting pipe each being operatively connected between said first concentrating column means and said second concentrating column means;
- an alcohol vapor conducting pipe operatively connected between the second concentrating column means and the compressor means;
- a compressed alcohol vapor conducting pipe operatively connected between the compressor means and the water evaporator means;
- a steam blowing pipe operatively connected between the water evaporator means and the first concentrating column means;
- a steam blowing pipe and an alcohol supplying reflux pipe each operatively connected between the evaporator means and the second concentrating column means;
- an exhaust gas pipe and a water supplying pipe each operatively connected to the water evaporator means;
- and
- an alcohol removing branched pipe operatively connected to the alcohol supplying pipe;
- feeding the glue-like raw alcohol containing solution to said first concentrating column means;
- and
- recovering 94.5 weight % of alcohol through said alcohol removing branched pipe.
14 more elements
Dependencies are inferred from the claim text.