第46卷第9期热力发电V ol.46 No.9
内蒙白音华褐煤中低温热解特性实验
章康1，王智化1，裴育峰2，林伽毅1，何勇1，李谦1，岑可法1（1.浙江大学能源清洁利用国家重点实验室，浙江杭州310027；
2.中国电力工程顾问集团东北电力设计院有限公司，吉林长春130021）
［摘要］为研究温度对内蒙白音华褐煤热解产物的影响规律，采用程序升温法在管式炉反应器上对白音华褐煤在不同温度下（400~600 ℃）进行热解，利用傅里叶红外光谱仪和氮气等温吸
附方法对褐煤半焦化学组分和物理结构的变化规律进行研究，采用GC-MS和气相色谱结
合在线电子天平的方法分别对焦油成分和各煤气产量进行分析，从而探究了褐煤的热解特
性。结果表明：中低温热解条件下，随着热解温度的升高，半焦产率降低，而煤气和焦油
的产率逐渐增加；煤气产量中，CO2最多，但在450 ℃之后稳定在74.4 mL/g；焦油组成
中，脂肪烃和含氧化合物占主要成分，其含氮化合物主要以吡啶环和喹啉环的形式存在，
且结构稳定；热解可有效提高褐煤煤阶，增大芳碳率和环缩合度；随着热解温度升高，煤
样的平均孔径先增大后减小，比表面积和比孔容积则正好相反，这是挥发分析出、官能团
分解和焦油生成的共同结果。
［关键词］褐煤；热解；煤气产量；半焦；焦油；红外光谱图；官能团；孔隙结构
［中图分类号］TK16 ［文献标识码］A ［文章编号］1002-3364(2017)09-0031-08
［DOI 编号］10.3969/j.issn.1002-3364.2017.09.031
Experimental research on pyrolysis characteristics of Baiyinhua lignite in Inner Mongolia from low to moderate temperature
ZHANG Kang1, WANG Zhihua1, PEI Yufeng2, LIN Jiayi1, HE Yong1, LI Qian1, CEN Kefa1
(1. State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China;
2. Northeast Electric Power Design Institute Co., Ltd. of China Power Engineering Consulting Group, Changchun 130021, China) Abstract: To evaluate the effects of temperature on coal pyrolysis products, Baiyinhua lignite was pyrolyzed at different temperatures (400~600 ℃) in tube furnace via temperature programming method. The chemical and physical structures of the obtained char were investigated using the Fourier infrared spectrometer (FTIR) and nitrogen isothermal adsorption method. Meanwhile, the GC-MS and gas chromatography combined with online electronic balance were adopted to analyze the composition of pyrolysis tar and gas yields to explore the lignite pyrolysis characteristics. The results show that, in the pyrolysis, as the pyrolysis temperature raised, the char yield reduced gradually while the pyrolysis gas and tar yields increased. As for the gas, the CO2 yield was the highest and reached a stable level of 74.4 mL/g at temperatures higher than 450 ℃ Besides, fatty hydrocarbon and oxygen-containing compounds occupied the main part of tar composition while nitrogen-containing compounds mainly exists in the form of pyridine and quinoline rings with stable structure. Pyrolysis can effectively improve the coal rank and increase the aromatic carbon rate and ring condensation degree. Furthermore, as a result of volatile evolution, functional group decompositions and tar formation, the average pore diameter first increased and then decreased with the rising pyrolysis temperature, while the specific surface area and pore volume exhibited the opposite trend.
Key words: lignite, pyrolysis, gas yield, semi-char, tar, FTIR, functional group, pore structure 煤炭作为一种自然界中储量最多、分布最广的常规能源，在未来较长时间内仍将是世界上主要的收稿日期：2017-01-18
基金项目：国家重点基础研究发展计划(2012CB214906)；国家自然科学基金资助项目(51422605)
Supported by：National Basic Research Program of China (2012CB214906); National Natural Science Foundation of China (51422605)
第一作者简介：章康(1992—)，男，博士研究生，主要研究方向为煤炭清洁利用，zhangkang@https://www.doczj.com/doc/d113472401.html,。
通讯作者简介：王智化(1977—)，男，教授，博士生导师，wangzh@https://www.doczj.com/doc/d113472401.html,。
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