Stirring arrangement for a biogas fermenter as well as the process for the distribution of biomass in a fermentation liquid by using a stirring arrangement

摘要: Two parallel, counter-rotating, driven stirrer-shafts (10, 11) operate as a pair (9), immersed in the fermentation fluid (8). These induce turbulent flow (18) around shafts, causing intensive localized mixing (17) of biomass (7) with fluid. In addition, horizontal recirculating (19) is induced tank, affecting its entire volume. The passes through passage (15) between and leaves pressurized region (20). It swept away, later to return by recirculation. variant arrangement, shafts are located centrally inducing diametral splitting Further variants arrangement detailed; more than one shaft may be included, for example. A common drive transmission provided shafts. Various conventional systems applicable, including hydraulic pneumatic. Speed direction can changed. Stirrers modular removable such. Baffles included tank. paddles or propellers used. An Independent claim corresponding method distribution