Recommendations for the process of biomass and waste gasification in a rotary reactor

Abstract

The paper presents a technology for biomass and waste gasification/pyrolysis with use of flue gas as a converting agent. This technology includes a rotary reactor that operates continuously and is integrated with a power boiler, for example WR-25 type grate boiler. Process gas (syngas) as well as possible char being a result of the process are combustible and can be recirculated to the boiler’s combustion chamber. The paper presents laboratory research of selected biomass and waste: Refuse derived fuel (RDF), wood chips, nut shells, sewage sludge, coal sludge, mixture of 50% coal sludge with 50% RDF. Basing on the laboratory research a calculation procedure was developed to determine an industrial-size process parameters. The procedure allows to calculate how much fuel can be gasified/converted in a rotary reactor and the reactor’s dimension: inner diameter Dwr and length Lr.