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    VERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG VON BIOGAS AUS GÄRSUBSTRAT
    6.
    发明公开
    VERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG VON BIOGAS AUS GÄRSUBSTRAT 有权
    方法和装置用于从发酵基质沼气

    公开(公告)号：EP2566947A1

    公开(公告)日：2013-03-13

    申请号：EP12723087.8

    申请日：2012-04-05

    申请人： DGE Dr.-Ing. Günther Engineering GmbH

    发明人： GÜNTHER, Lothar

    IPC分类号： C12M1/107 ,  C12M1/113

    CPC分类号： C12M21/04 ,  C12M23/36 ,  C12M23/40 ,  C12M29/18 ,  C12M29/20 ,  C12M29/26 ,  C12M41/12 ,  C12M41/16 ,  C12M41/18 ,  C12M41/26 ,  C12M41/32 ,  C12M41/40 ,  C12M45/20 ,  C12M47/18 ,  Y02E50/343

    摘要： The invention relates to a process and to an apparatus for production of biogas from fermentation substrate, in at least one fermenter. The object is to enable increased formation of methane during the fermentation. For this purpose, the solution proposed is to expel a defined portion of fermentation substrate during the residence time of the fermentation substrate in the fermenter and to pump it through a first heat exchanger W1 in a closed circuit to heat it to temperatures of up to 110°C. Subsequently, the fermentation substrate is supplied to a second heat exchanger W2 and heated further therein up to a maximum of 180°C. As a result of the pumping operation, the fermentation substrate separated out is compressed to a pressure of 1.5 to 10 bar and pumped into a closed vessel B1. The pressure is released or maintained therein, with release of CO
    2 , ammonia, traces of H
    2 S and water vapor from the fermentation substrate, these being removed as a gas mixture. Reduced-ammonia fermentation substrate is removed from vessel B1 and sent back to the fermentation substrate present in the fermenter.

    INTEGRATED SYSTEM FOR HYDROGEN AND METHANE PRODUCTION FROM INDUSTRIAL ORGANIC WASTES AND BIOMASS
    7.
    发明公开
    INTEGRATED SYSTEM FOR HYDROGEN AND METHANE PRODUCTION FROM INDUSTRIAL ORGANIC WASTES AND BIOMASS 有权
    集成系统的WASERSTOFF-，沼气有机工业废弃物和生物量

    公开(公告)号：EP2391706A1

    公开(公告)日：2011-12-07

    申请号：EP10735468.0

    申请日：2010-02-01

    申请人： The University of Western Ontario

    发明人： HAFEZ, Hisham Mohamed ,  EI NAGGAR, Mohamed Hesham ,  NAKHLA, George F.

    IPC分类号： C12M1/00 ,  C02F11/04 ,  C02F3/00 ,  C12M1/113 ,  C12M1/38 ,  C12P3/00 ,  C12P5/02

    摘要： The present invention provides a system that has been devised to overcome the two most important limitations for sustained biological hydrogen production, namely contamination of the microbial hydrogen-producing cultures with methane-producing cultures necessitating frequent re-start-up and/or other methanogenic bacteria inactivation techniques, and the low bacterial yield of hydrogen-producers culminating in microbial washout from the system and failure. The system includes a continuously stirred bioreactor (CSTR) for biological hydrogen production, followed by a gravity settler positioned downstream of the CSTR, which combination forms a biohydrogenator. The biomass concentration in the hydrogen reactor is kept at the desired range through biomass recirculation from the bottom of the gravity settler and/or biomass wastage from the gravity settler's underflow. The gravity setter effluent is loaded with volatile fatty acids, as a result of microbiological breakdown of the influent waste constituents by hydrogen-producing bacteria, and is an excellent substrate for methane-forming bacteria in the downstream biomethanator.