Study on gasification characteristics of automotive shredder residue
On a self-made fixed bed gasifier,the effects of air equivalence ratio and reaction temperature on the quality of synthetic gas and gasification indicators were investigated using automotive shredder residue(ASR)as feedstock.The results showed that within a range of 0-0.3,with the increase of air equivalence ratio,the production of combustible gas components in synthesis gas increased first and then decreases,the gasification efficiency first increased and then decreased,and the carbon conversion rate gradually increased.Within the temperature range of 700-900 ℃,as the temperature increased,the yield of combustible gas components in the synthesis gas increased,and the gasification efficiency and carbon conversion rate gradually increased.When the air equivalence ratio was 0.2 and the gasification temperature was 900 ℃,the cold gas efficiency was the highest.The mass and energy balance analysis of the gasification test at 900 ℃ showed that the mass balance error of the system was only 5％,which met the mass balance requirements.The energy recovery rate and energy consumption ratio were 55.39％and 2.28,respectively,indicating that gasification of ASR had the potential for systematic thermal self-sufficiency and providing energy for other energy-consuming processes.
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