Torrefaction of agriculture straws and its application on biomass pyrolysis poly-generation.
This study investigated the properties of corn stalk and cotton stalk after torrefaction, and the effects of torrefaction on product properties obtained under the optimal condition of biomass pyrolysis polygeneration. The color of the torrefied biomass chars darkened, and the grindability was upgraded, with finer particles formed and grinding energy consumption reduced. The moisture and oxygen content significantly decreased whereas the carbon content increased considerably. It was found that torrefaction had different effects on the char, liquid oil and biogas from biomass pyrolysis polygeneration. Compared to raw straws, the output of chars from pyrolysis of torrefied straws increased and the quality of chars as a solid fuel had no significant change, while the output of liquid oil and biogas decreased. The liquid oil contained more concentrated phenols with less water content below 40wt.%, and the biogas contained more concentrated H2 and CH4 with higher LHV up to 15MJ/nm(3).
State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, Hubei 430074, PR China. Electronic address: chyq721@qq.com.
Yingquan
Y
Chen
State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, Hubei 430074, PR China. Electronic address: yhping2002@163.com.
Haiping
H
Yang
Department of New Energy Science and Engineering, University of Science and Technology, Wuhan, Hubei 430074, PR China. Electronic address: qyang@hust.edu.cn.
Qing
Q
Yang
State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, Hubei 430074, PR China. Electronic address: hhm0311@163.com.
Hongmeng
H
Hao
State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, Hubei 430074, PR China. Electronic address: zhubo19850505@163.com.
Bo
B
Zhu
State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, Hubei 430074, PR China. Electronic address: hp.chen@163.com.
Hanping
H
Chen
D000383:Agriculture; D056804:Biofuels; D018533:Biomass; D001709:Biotechnology / Q000379:methods*; D002606:Charcoal / Q000737:chemistry; D006358:Hot Temperature; D009821:Oils / Q000737:chemistry; D010316:Particle Size; D014866:Waste Products / Q000032:analysis*
D056804:Biofuels; D009821:Oils; D014866:Waste Products; C540010:biochar; D002606:Charcoal
Agriculture straw; Product properties; Pyrolytic polygeneration; Torrefaction