Affiliation:
1. School of Metallurgical Engineering, Xi'an University of Architecture and Technology 1 , Xi'an 710055, China
2. School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology 2 , Xi'an 710055, China
Abstract
Low-rank coal (LRC) pyrolysis assisted by biomass can realize the clean and efficient conversion utilization of LRC. The gas and tar characteristics obtained from co-pyrolysis of apple branch (AB) and LRC at different stages were studied with TG-FTIR and Py-GC/MS. It was found that the co-pyrolysis process could be divided into four stages, and the weight loss rate of AB+LRC was 24.03% in the second stage (194.60–404.63 °C), lower than the calculated value. However, the third stage (404.63–594.33 °C) weight loss rate was 13.33%, higher than the calculated value. The content of volatile products increased during co-pyrolysis, resulting in a higher total weight loss rate than the calculated value. There was a synergistic effect between AB and LRC. Aromatic hydrocarbon release intensity in co-pyrolysis products was significantly enhanced in the second and third stages, and it was stronger than that of pyrolysis alone; in contrast, the release intensity of gaseous products was weaker than that of pyrolysis alone. In co-pyrolysis tar, the content of monocyclic and bicyclic aromatic hydrocarbons was increased. The C<10 component was 86.48%, higher than the calculated value of 12.68%. The proportion of aromatic hydrocarbons and phenols increased significantly compared with the calculated value.
Funder
National Natural Science Foundation of China
Innovation capability support Program of ShaanXi
Service Local Special Project of Education Department of ShaanXi Provincial Government
Special Scientific Research Project of Education Department of ShaanXi Provincial Government
Science and Technology Foundation Project of XAUAT
General Special Scientific Research Project of the Department of Education of ShaanXi Province
Subject
Renewable Energy, Sustainability and the Environment