Co-pyrolysis of coal/biomass and coal/sewage sludge mixtures

Biomass and sewage sludge are attracting increasing interest in power plant technology as a source of carbon-dioxide-neutral fuels. A new way to reduce the consumption of fossil fuels could be the co-combustion or co-gasification of coal and biomass or coal and sell age sludge. In both cases, pyrolysis is the first step in the technical process. In order to obtain derailed information about the pyrolysis of coal/biomass and coal/sewage sludge mixtures as well as unblended fuels, the ''Institut fur Verfahrenstechnik und Dampkesselwesen (IVD)'' at the University of Stuttgart has carried out investigations using an electrically heated entrained flow reactor. The test runs provided information about fuel conversion efficiency, pyrolysis gas and tar yield.