生物质型煤的热解特性研究  

Study on pyrolysis characteristics of biomass briquette

作　　者：党红艳 陈明胜[1,2] 刘晓华 赵琰 陈雅楠[1,2] 王艳丽 高迪[3] 高凡 贺新福[3,4] Dang Hongyan;Chen Mingsheng;Liu Xiaohua;Zhao Yan;Chen Yanan;Wang Yanli;Gao Di;Gao Fan;He Xinfu(Shaanxi Energy Quality Supervision&Inspection Institute,Xi'an Shaanxi 710054,China;National Coal Quality Inspection and Testing Center(Xi'an),Xi'an Shaanxi 710054,China;College of Chemistry and Chemical Engineering,Xi’an University of Science and Technology,Xi'an Shaanxi 710054,China;Key Laboratory of Coal Resources Exploration and Comprehensive Utilization,Ministry of Natural Resources,Xi'an Shaanxi 710021,China)

机构地区：[1]陕西省能源质量监督检验所,陕西西安710054 [2]国家煤炭质量监督检验中心(西安),陕西西安710054 [3]西安科技大学化学与化工学院,陕西西安710054 [4]自然资源部煤炭资源勘查与综合利用重点实验室,陕西西安710021

出　　处：《煤化工》2025年第1期1-5,27,共6页Coal Chemical Industry

基　　金：国家市场监督管理总局科技计划项目(2021MK105)。

摘　　要：以低阶粉煤和可再生生物质为原料制备型煤,用于中低温热解分质转化,是实现低阶粉煤清洁高效利用的重要途径之一。以陕北红柳林低变质烟煤为原料,以小麦秸秆为黏结剂主要成分,制备了不同生物质含量的型煤,考察了生物质型煤与原煤的热解特性。结果表明:生物质型煤的热失重表现结合了原煤和生物质的特征,随生物质含量的增加,型煤热解转化率增加;随升温速率的提高,型煤最大热失重速率对应温度升高;生物质型煤热解转化可获得比原煤更高的焦油和煤气收率,随型煤中生物质含量的增加,煤气产率升高;型煤半焦相比原煤半焦具有更高的硫脱除率,型煤热解气中CO_(2)含量显著高于原煤。研究结果可为低阶粉煤热解分质转化工艺开发提供研究经验和理论基础。The preparation of biomass briquettes from low-rank pulverized coal and renewable biomass for low&medium-temperature pyrolysis represented one of the pivotal pathways for clean and efficient utilization of low-rank coal.Utilizing Hongliulin low-metamorphic bituminous coal from northern Shaanxi as the raw material and wheat straw as the primary binder component,biomass briquettes with different biomass contents were prepared,and their pyrolysis characteristics were studied in comparison with those of raw coal.The results showed that the thermogravimetric behavior of bio-briquettes exhibited a combination of characteristics from both raw coal and biomass.As the biomass content increased,the pyrolysis conversion rate of the biomass briquettes increased.With an elevation in heating rate,the temperature corresponding to the maximum thermal weight loss rate of the briquettes shifted upwards.The pyrolysis conversion of biomass briquettes could obtain a higher tar and gas yield than that of raw coal.An increase in biomass content in briquettes led to an elevated syngas yield.Additionally,the semi-coke derived from biomass briquettes demonstrated a higher sulfur removal rate compared to that from raw coal,and the CO_(2) content in the pyrolysis gas of bio-briquettes was notably higher than that of raw coal.This study could provide research experience and theoretical foundation for the development of pyrolysis technologies for low-rank pulverized coal.

关 键 词：生物质型煤 小麦秸秆 热解 热重分析 格金干馏 

分 类 号：TQ536[化学工程—煤化学工程] TK6[动力工程及工程热物理—生物能]