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Energy Sources, Part A: Recovery, Utilization, and Environmental Effects Volume 42, 2020 - Issue 5
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Articles

Investigation of molten salt in wet torrefaction and its effects on fast pyrolysis behaviors

Yinhai SuKey Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, ChinaView further author information
,
Lingqin LiuKey Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, ChinaView further author information
,
Qing DongSchool of Life Science and Food Engineering, Jiangsu Provincial Engineering Laboratory for Biomass Conversion and Process Integration, Huaiyin Institute of Technology, Huaian, ChinaView further author information
,
Yinhang XieKey Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, ChinaView further author information
,
Peng WangKey Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, ChinaView further author information
,
Shuping ZhangSchool of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing, ChinaCorrespondence[email protected]
View further author information
&
Yuanquan XiongKey Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, ChinaCorrespondence[email protected]
View further author information
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Pages 577-585 | Received 05 Nov 2018, Accepted 18 Jan 2019, Published online: 05 Mar 2019
 
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ABSTRACT

Positive roles of acidic ZnCl2 molten salt on wet torrefaction and subsequent pyrolysis were investigated in this work. Wet torrefaction pretreatment was carried out in a muffle furnace at pre-set temperature, respectively. Physicochemical properties of pretreated samples showed that acidic ZnCl2 not only removed alkali and alkaline earth metals (AAEMs) more fully but also significantly lowered the temperature during wet torrefaction. It was also found that the quality of pyrolysis products was upgraded further. The higher relative content of levoglucosan (LG) was detected in bio-oil. Meanwhile, bio-char with higher specific surface area seems a suitable feedstock for the preparation of high-grade activated carbon.

Additional information

Funding

This study was supported by the National Science and Technology Supporting Plan of China (No. 2014BAA05B01) and the Fundamental Research Funds for the Central Universities (No. 2242016K41041).

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