污泥热解残渣水蒸气气化制取富氢燃气

采用固定床反应器,进行了污泥热解残渣水蒸气气化制取富氢燃气的研究。考察了反应温度、固相停留时间、水蒸气流量及催化剂对气化效果及气体产物组成的影响。结果表明:随着反应温度的升高,气体产率由0.096 7 m3/kg逐渐增加到0.460 0 m3/kg,燃气中H2含量由17.87%逐渐增加到52.44%;在最佳固相停留时间为15min时,气体产率达到0.540 m3/kg;最佳水蒸气流量为1.19 g/min,此时产气量达到最大值0.61 m3/kg,H2含量为64.7%;添加催化剂有利于气体中H2含量的提高。

Preparation of hydrogen-rich gas from steam gasification of sludge pyrolysis residues

Preparation of hydrogen-rich gas from steam gasification of sludge pyrolysis residues was studied in a fixed bed reactor.The influence factors of gasification temperature,solid residence time,steam flow and catalyst on gasification performance and composition were investigated.The results indicated that the gas yield increased from 0.096 7 m3/kg to 0.460 0 m3/kg gradually with the temperature increased.And the concentration of H2 in fuel gas increased from 17.87% to 52.44%.The optimum solid residence time was 15 min.The maximum H2 yield production reached 0.61 m3/kg.when the optimum steam flow was 1.19 g/min.the maximum gas production is 0.61 m3/kg,with the 64.7% H2 contents,、by additing catalyst could increase the H2 concentration in the gas.