Biomass utilization as a clean energy in Zhejiang University

Abstract

Biomass is a possible alternative to the direct use of fossil fuel energy. Especially, Biomass plays an important role in China which has abundant biomass resources. The theories of biomass thermo-chemical conversion were introduced and on the basis of theoretical results utilization technologies of biomass were elaborated in Zhejiang University which included combustion, gasification and liquefaction. Based on lots of work on mechanism of straw combustion and small and bench scale experiments, a new developed technology is specially design for high-alkali biomass combustion in CHP scale. With Developed Biomass Gasification Technology the medium heat value gas (MCV) has supplied to the households in Wenzhou Demo Plant Project. A fluidized bed reactor with 20kg/h throughput operating at an atmospheric pressure with an inert atmosphere at 773 K has been used to produce bio-oils. At optimum pyrolysis conditions maximum bio-oil yield of up to 60% was obtained. The quality of the bio-oil produced remains poor, and a combination of high value products and energy applications were needed for profitability.