Apparatus and process for the conversion of fermentation broth resulting from ethanol production as waste product into biogas

摘要

Device for converting fermentation broth obtained in the production of ethanol as a by-product into biogas, comprising - a separation device (2) for separating the fermentation broth into a thin fraction and a thick fraction, the thin fraction having a smaller dry matter fraction than the thick fraction, - at least two biogas reactors (3, 4), wherein the first biogas reactor (3) for fermenting the thin fraction is formed, which is referred to below as Dünnstofffermenter (3), and the second biogas reactor (4) is formed for fermenting the thick fraction, hereinafter referred to as Dickstofffermenter (4), - a storage tank (5) for collecting the biogas produced in the biogas reactors (3, 4) and the reactor outlets, - a line section (9.3) for transporting the thin fraction from the separation device (2) into a thin fraction storage tank (11 ) and a conduit section (9.6) containing the thin fraction storage tank (11 ) connects to the Dünnstofffermenter (3); and - a line section (9.10) for transporting the thick fraction from the separation device (2) into a thick fraction storage tank ...