Investigation of cattle manure in steam gasification from bubbling bed reactor

Abstract

Among the various types of animal-based wastes, cattle manure is an alternative source for different applications. Excess cattle manure causes air and water pollution, so recycling of this waste is an important issue especially in rural areas. Gasification is the process that converts the waste into synthesis gas (syngas) to produce energy or higher value chemicals. In this work, cattle manure sample was used as feedstock for steam promoted gasification process in bubbling bed reactor by using Aspen Plus simulation. The developed bubbling fluidized bed gasifier model was validated with two experimental studies from the literature. The performance of the gasification process and the quality of syngas were investigated by means of lower heating value (LHV), the exergy value, and the composition of syngas. Sensitivity analysis was performed for the changing operating conditions such as temperature and steam/biomass ratio. The results showed good correlation with the literature works.