Thermal-chemical treatment of solid waste mixtures

AbstractThe paper presents the results on devolatilization and gasification of cellulose and plastic solid waste mixtures with respect to process kinetics and reaction products for simplified MSW to energy conversion approach. The paper presents experimental gasification process characterization and reactants evolution with syngas generation. The research focused on products mass reduction rate under atmospheric steam gasification conditions conducted at 850°C - 1100°C and gaseous phase evolution (CO and CO2 flow rate – figure 1) as a tool for process characterization. Two-phase gasification process was considered: pyrolysis and char steam gasification for in depth process observation. The carbon conversion rate was established for pyrolysis char together with: carbon based gaseous species variation in the syngas from the char gasification as function of pyrolysis residence time; char mass reduction rate under vapour-gasification condition. The influence of char mass on the gasification period was also quantified