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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2010/070716
Kind Code:
The purpose of this object is to provide a method of producing ethanol, whereby ethanol can be efficiently produced while preventing ethanol fermentation from inhibition and maintaining a high ethanol yield, and an apparatus for producing the same. A method of producing ethanol wherein a sugar-containing liquid obtained by biologically or chemically saccharifying a biomass is fermented in a fermentation tank (1) and then the fermented liquid is distilled to give ethanol, which has the constitution comprising: measuring the temperature or ethanol concentration of the fermented liquid in the above-described fermentation tank (1) with a temperature sensor (15) or a concentration sensor (16); when the temperature or ethanol concentration thus measured attains a predetermined value or more, withdrawing at least a portion of the fermented liquid from the fermentation tank (1); introducing the thus withdrawn fermented liquid to a vacuum evaporator (4) via a circulation cooling line (2); evaporating the fermented liquid in vacuo to thereby separate the evaporated gas containing ethanol; and then returning the residual liquid which has been cooled and shows a lowered ethanol concentration into the fermentation tank (1).

SAKASHITA, Shigeru (LTD. 14-15 Botan 3-chome, Koto-k, Tokyo 82, 13584, JP)
坂下 茂 (〒82 東京都江東区牡丹3丁目14番15号 株式会社前川製作所内 Tokyo, 13584, JP)
Application Number:
Publication Date:
June 24, 2010
Filing Date:
December 15, 2008
Export Citation:
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MAYEKAWA MFG. CO., LTD. (14-15, Botan 3-chome Koto-k, Tokyo 82, 13584, JP)
株式会社前川製作所 (〒82 東京都江東区牡丹3丁目14番15号 Tokyo, 13584, JP)
SAKASHITA, Shigeru (LTD. 14-15 Botan 3-chome, Koto-k, Tokyo 82, 13584, JP)
International Classes:
C12P7/06; B01D3/00; C07B63/00
Foreign References:
Other References:
SABURO SHICHIJI: 'Biseibutsu Kogaku no Oyo', 01 December 1972, KYORITSU SHUPPAN CO., LTD. pages 110 - 112
SHADAN HOJIN KAGAKU KOGAKU KYOKAI: 'Kagaku Sochi Binran', 30 March 1989, MARUZEN CO., LTD. pages 431 - 432
Attorney, Agent or Firm:
TAKAHASHI, MATSUMOTO & PARTNERS INTELLECTUAL PROPERTY CORP. (Room 1003, Ambassador Roppongi Buildings16-13, Roppongi 3-chom, Minato-ku Tokyo 32, 10600, JP)
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