Tar-free fuel gas production from high temperature pyrolysis of sewage sludge.
Pyrolysis of sewage sludge was studied in a free-fall reactor at 1000-1400 °C. The results showed that the volatile matter in the sludge could be completely released to gaseous product at 1300 °C. The high temperature was in favor of H2 and CO in the produced gas. However, the low heating value (LHV) of the gas decreased from 15.68 MJ/Nm(3) to 9.10 MJ/Nm(3) with temperature increasing from 1000 °C to 1400 °C. The obtained residual solid was characterized by high ash content. The energy balance indicated that the most heating value in the sludge was in the gaseous product.
School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
Leguan
L
Zhang
Bo
B
Xiao
Zhiquan
Z
Hu
Shiming
S
Liu
Gong
G
Cheng
Piwen
P
He
Lei
L
Sun
D056804:Biofuels; D002248:Carbon Monoxide / Q000737:chemistry; D006859:Hydrogen / Q000737:chemistry; D012037:Refuse Disposal / Q000295:instrumentation / Q000379:methods; D012722:Sewage / Q000737:chemistry*; D013638:Tars
D056804:Biofuels; D012722:Sewage; D013638:Tars; D002248:Carbon Monoxide; D006859:Hydrogen
Free-fall reactor; Fuel gas; Pyrolysis; Sewage sludge