The Experimental Research On The Pneumatics Transport And Combustion Of Pulverized Biomass

As the increasingly serious problems of fossil energy depletion and environmental pollutions, exploiting the clean renewable energy resources has become the urgency. Pulverized biomass resources are the renewable energy resources that can be easily stored and transported, in addition it has high efficiency and temperature of combustion, so it can be widely applied in many industrial fields.The biomass sawdust mainly has three processes of dehydration, gasification and combustion when heated. At the beginning period of heating up, the biomass need to absorb much heat and lost the inner water, at the same time, the specific heat increase. After gasification , the specific heat decrease mainly because the specific heat of gas is less than that of solid.This paper designs a pneumatics transportation device of pulverized biomass which adopt positive pressure and dense-phase mode, it assures the stability and continuity during transportation. The ideas of designing consider several factors such as the smaller grain diameter, lower specific gravity and higher viscosity compared as pulverized coal. For the above reasons, a pressurization tube and a ejector are respectively installed on the top cover and the underside of the conveyer. This device can be applied in dense-phase and high-pressure pneumatics transportation of industry.Furthermore, swirl combustor is utilized to increase the combustion efficiency and temperature Three kinds of pulverized biomass are used to do combustion experiments. The results demonstrate that this set of pneumatics transportation and combustion devices can effectively applied in small industry if adopting some high-temperature combustion technologies.