Producing purified starch comprises grinding cereals containing starch in an air vortex mill to starch flour, separating bran from the flour and subsequently separating proteins from the flour
ACS AGROCHEMISCHE SYSTEME GMBH;PROKON NORD ENERGIESYSTEME GMBH
发明人:
TUSEL, GUENTHER,HAMERS, ANDRE,BUHR, INGO DE
申请号：
DE200710033988
公开号：
DE102007033988(A1)
申请日:
2007.07.19
申请国别(地区):
德国
年份:
2009
代理人:
摘要：
Producing purified starch comprises grinding cereals containing starch in an air vortex mill to starch flour, so that 90% of the flour particles possess a particle size of 150-250 mu m, separating bran from the flour and subsequently separating proteins from the flour. Independent claims are included for: (1) a purified starch obtained by the above method; (2) producing ethanol comprising fermenting the purified starch by microorganisms to a fermentation broth, optionally after the liquefaction of the starch, producing a mash by separating microorganisms from the fermentation broth and separating ethanol from the mash; (3) producing a first sugar solution comprising preparing or providing starch milk, thermal liquefying the starch of the starch milk, cleaving the starch to obtain mono, di- and/or oligosaccharides, separating fats, oils and proteins from the starch milk, and recovering the first sugar solution as permeate of a first membrane filtration of the starch milk; (4) producing a second sugar solution comprising preparing or providing pentosan fractions of starch milk, optionally concentrating the pentosan fractions, cleaving cellulose and/or hemi-cellulose of the pentosan fractions, preferably under acid additives, separating fats, oils and proteins from the pentosan fractions, recovering the second sugar solution as permeate of a third membrane filtration of the pentosan fraction; (5) a sugar solution obtained by the above method; (6) a fermentation procedure for producing ethanol, comprising providing the first or second sugar solution, carrying out the fermentation to produce a fermentation broth, separating microorganisms from the fermentation broth to produce a mash, purifying the mash by membrane filtration to a permeate; and (7) a distillation method comprising carrying out a distillation for producing a distillation product vapor, condensing a first distillation product vapor partial stream in a vapor compressor, operating a heat exchanger with the compressed partial stream to obtain heat for operating the distillation and to obtain a condensate as return flow for the distillation, and/or purifying a second distillation product vapor partial stream in a permeation- or pervaporation layer to obtain a purified distillation product and a depleted distillation product vapor partial stream, where the depleted distillation product vapor partial stream is condensed in a vapor compressor and used in a heat exchanger to obtain heat for operating the distillation and to obtain a condensate as return flow for the distillation.
