Thermal behavior of hydrochar from co-hydrothermal carbonization of swine manure and sawdust: effect of process water recirculation

被引：24
作者：
Lang, Qianqian [1 ,2 ]
Luo, Hainan [3 ]
Li, Yi [4 ]
Li, Dong [1 ,2 ]
Liu, Zhengang [1 ,2 ]
Yang, Tianxue [5 ]
机构：
[1] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, 18 Shuangqing Rd, Beijing 100085, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Zaozhuang Univ, Coll Chem Engn & Mat Sci, Zaozhuang 277160, Shandong, Peoples R China
[4] Chinese Acad Sci, Inst Proc Engn IPE, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
[5] Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China
来源：
SUSTAINABLE ENERGY & FUELS | 2019年 / 3卷 / 09期
关键词：
KINETIC-ANALYSIS; LIGNOCELLULOSIC BIOMASS; COMBUSTION BEHAVIOR; ANAEROBIC-DIGESTION; CATTLE MANURE; ANIMAL MANURE; COCOMBUSTION; CONVERSION; PYROLYSIS; SLUDGE;
D O I：
10.1039/c9se00332k
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Effect of process water recirculation during co-hydrothermal carbonization (co-HTC) of swine manure (SM) and sawdust (SD) on the thermal behavior of hydrochar was investigated in this study. The results showed that process water recirculation promoted the dehydration and decarboxylation reactions, and increased the mass and energy yields of hydrochar during co-HTC. The combustion behavior of hydrochar was changed by the recirculation process with decreased ignition temperature and increased burnout temperature. Additionally, the first process water recirculation decreased the average activation energy (E-a) value of the hydrochar from 156.46 and 154.16 kJ mol(-1) to 136.95 and 133.67 kJ mol(-1) by Flynn-Wall-Ozawa and Kissinger-Akahira-Sunose methods, respectively, and further recirculation had a slight effect on the E-a value. The thermodynamic parameter of entropy change verified that combustion reactivity of the hydrochar was enhanced by process water recirculation. The present study demonstrated that process water recirculation was feasible and environment-friendly for fuel production during co-HTC of SM and SD.
引用
收藏
页码：2329 / 2336
页数：8
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