煤直接液化残渣及其萃取产物的热重分析

刘朋飞; 张永奇; 房倚天

煤直接液化残渣及其萃取产物的热重分析

1.
中国科学院山西煤炭化学研究所, 山西太原 030001;
2.
中国科学院研究生院, 北京 100049

详细信息

通讯作者:
张永奇, Tel/Fax: 0351-2021137, E-mail: zhangyq@sxicc.ac.cn。

中图分类号: O643
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出版历程
- 收稿日期: 2011-08-12
- 修回日期: 2011-11-03
- 刊出日期: 2012-06-30

TG analysis of coal direct liquefaction residue and its solvent extracts

1.
Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;
2.
Graduate University of Chinese Academy of Sciences, Beijing 100049, China

摘要

摘要: 利用热天平考察了神华和胜利两种典型中国煤直接液化残渣及其萃取产物的失重曲线。实验表明,神华残渣和胜利残渣的轻质组分含量相近,其失重率也相近,但轻质组分组成不同使得失重过程并不一致。升温速率增加,热解最大失重速率增加,最大失重速率温度升高。以残渣各组分失重曲线拟合得到的残渣失重曲线可近似表示残渣的失重曲线。动力学分析表明,由实验数据拟合的活化能和指前因子计算得到的失重曲线,与实际实验得到的失重曲线较为一致。液化残渣在低温区失重率很高,而且这部分失重产物可以通过溶剂萃取的方式得到。
- 煤直接液化 /
- 残渣 /
- 热重 /
- 萃取 /
- 活化能 /
- 指前因子
Abstract: Pyrolysis of two typical Chinese coal liquefaction residues (Shenhua and Shengli) and their solvent extracts was carried out by TG. The results show that Shenhua and Shengli residue contain similar content of light component, and their weight losses in TGA are similar. However, the different composition of light component in the two residues leads to their difference in TG curves. As increasing of heating rate, the maximum weight loss rate and its corresponding temperature increase. The calculated weight loss calculated from the constitutes is approximately the actual value of the residue. From the kinetic analysis, it is found that the weight loss calculated by the experimental E and k₀ agree well with that obtained from the experiment. The weight loss is mainly caused by evaporation of volatile matter which can be extracted by solvent.
- coal direct liquefaction /
- residue /
- thermogravimetric analysis /
- extract /
- activation energy /
- frequency factor

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参考文献(9)

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