Co-pyrolysis characteristics and interaction route between low-rank coals and Shenhua coal direct liquefaction residue

作     者：Kai Li Xiaoxun Ma Ruiyu He Zhenni Li 

作者机构：School of Chemical EngineeringNorthwest UniversityXi'an 710069China International Scientific and Technological Cooperation Base of the Ministry of Science and Technology(MOST)for Clean Utilization of Hydrocarbon ResourcesXi'an 710069China Chemical Engineering Research Center of the Ministry of Education(MOE)for Advanced Use Technology of Shanbei EnergyXi'an 710069China Shaanxi Research Center of Engineering Technology for Clean Coal ConversionXi'an 710069China Collaborative Innovation Center for Development of Energy and Chemical Industry in Northern ShaanxiXi'an 710069China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2019年第27卷第11期

页      面：2815-2824页

核心收录：

学科分类：0710[理学-生物学] 083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：Supported by National High-tech Research and Development Program of China(2011AA05A2021) the National Natural Science Foundation of China(21536009) Science and Technology Plan Projects of Shaanxi Province(2017ZDCXL-GY-10-03). 

主　　题：Low-rank coal Coal direct liquefaction residue Co-pyrolysis Kinetics 

摘      要：To reasonably utilize the coal direct liquefaction residue(DLR), contrasting research on the co-pyrolysis between different low-rank coals and DLR was investigated using a TGA coupled with an FT-IR spectrophotometer and a fixed-bed reactor. GC–MS, FTIR, and XRD were used to explore the reaction mechanisms of the various co-pyrolysis processes. Based on the TGA results, it was confirmed that the tetrahydrofuran insoluble fraction of DLR helped to catalyze the conversion reaction of lignite. Also, the addition of DLR improved the yield of tar in the fixed-bed, with altering the composition of the tar. Moreover, a kinetic analysis during the co-pyrolysis was conducted using a distributed activation energy model. The co-pyrolysis reactions showed an approximate double-Gaussian distribution.