废轮胎整胎与生物质共气化实验研究

The experimental study on co-gasification of whole waste tyres and biomass

以树枝秸秆及废轮胎整胎为原料,在＂反烧＂式固定床气化炉中以空气为气化剂进行气化实验研究。结果表明,随着空气当量比ER的增加,炉内气化温度升高,气化效率提升,当ER为0.30时,炉内温度达到750℃,气化效率为56.45%,气体热值为4.68 MJ/m3;随着原料中废轮胎比例的增加,气化效率有所提高,燃气热值升高,当废轮胎质量含量为44%时,气化效率达到60.21%,气体热值为5.34 MJ/m3;气化温度是影响气化效率和气体热值的最重要因素,提高空气当量比可以使炉内温度升高,强化气化效果;同时原料中废轮胎比例也对气化效率及气体热值有较大影响,废轮胎质量含量为40%~50%较为适宜。废轮胎以整胎形式与生物质共气化是废轮胎处置与资源化利用的有效方式。

Co-gasification experiments for branches and waste tyres were performed in reverse-burning fixed-bed gasifier with air as gasification agent. The results showed that co-gasification of waste tyres and biomass was an effective method to dispose and recycling waste tyres. Different tyre dispose methods had little effect on the gasification. The temperature in the gasifier and the gasification efficiency increased with the increasing of equivalence ratio（ER）. The temperature in the gasifier reached 750 ℃ and the gasification efficiency was 56.45% when ER=0.30. The heat value of gas was 4.68MJ/m3 at the same time. The heat value of gas was 5.34 MJ/m3 and the gasification efficiency reached60.21% when the tyre content was 41%. The results of the experiments showed that the most important condition on gasification efficiency and heat value of gas is the gasification temperature and equivalence ratio had an important influence on the gasification temperature. The tyres content also have large effect on gasification result and the best tyres content is between 40%~50%.