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溶剂处理对三塘湖长焰煤及其快速热解产物的组成和结构的影响

Effect of Solvent Treatment on the Composition and Structure of Santanghu Long Flame Coal and Its Rapid Pyrolysis Products.

作者信息

Guo Jia, Zhu Meixia, Mo Wenlong, Wang Yanxiong, Yuan Junrong, Wu Ronglan, Niu Junmin, Ma Kongjun, Guo Wencang, Wei Xianyong, Fan Xing, Akram Naeem

机构信息

Xinjiang Energy Co., Ltd., Urumqi 830000, China.

State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources and Key Laboratory of Coal Clean Conversion & Chemical Engineering Process (Xinjiang Uyghur Autonomous Region), School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830046, China.

出版信息

Molecules. 2023 Oct 13;28(20):7074. doi: 10.3390/molecules28207074.

DOI:10.3390/molecules28207074
PMID:37894553
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10609383/
Abstract

Easily soluble organic components in Santanghu long flame coal (SLFC) from Hami (Xinjiang, China) were separated by CS and acetone mixed solvent (/ = 1:1) under ultrasonic condition, and the extract residue was stratified by carbon tetrachloride to obtain the light raffinate component (SLFC-L). The effect of solvent treatment on the composition and structure of the coal and its rapid pyrolysis products was analyzed. Solvent treatment can reduce the moisture content in coal from 9.48% to 6.45% and increase the volatile matter from 26.59% to 28.78%, while the macromolecular structure of the coal changed slightly, demonstrating the stability of coal's complex organic structure. Compared with raw coal, the relative contents of oxygen-containing functional groups and aromatic groups in SLFC-L are higher, and the weight loss rates of both SLFC and SLFC-L reached the maximum at about 450 °C. In contrast, the loss rate of SLFC-L is more obvious, being 33.62% higher than that of SLFC. Pyrolysis products from SLFC at 450 °C by Py-GC/MS are mainly aliphatic hydrocarbons and oxygenated compounds, and the relative contents of aliphatic hydrocarbons decreased from 48.48% to 36.13%, while the contents of oxygenates increased from 39.07% to 44.95%. Overall, the composition and functional group in the coal sample were changed after solvent treatment, resulting in a difference in the composition and distribution of its pyrolysis products.

摘要

采用二硫化碳（CS）和丙酮（体积比1:1）的混合溶剂，在超声条件下对中国新疆哈密三塘湖长焰煤（SLFC）中的易溶有机组分进行分离，并用四氯化碳对萃取残渣进行分层，得到轻质萃余物组分（SLFC-L）。分析了溶剂处理对煤及其快速热解产物的组成和结构的影响。溶剂处理可使煤中的水分含量从9.48%降至6.45%，挥发分从26.59%增至28.78%，而煤的大分子结构变化较小，表明煤复杂有机结构的稳定性。与原煤相比，SLFC-L中含氧官能团和芳香族基团的相对含量更高，SLFC和SLFC-L的失重率均在约450℃时达到最大值。相比之下，SLFC-L的失重率更为明显，比SLFC高33.62%。通过Py-GC/MS对450℃下SLFC热解产物分析可知，主要为脂肪烃和含氧化合物，脂肪烃的相对含量从48.48%降至36.13%，而含氧化合物的含量从39.07%增至44.95%。总体而言，溶剂处理后煤样的组成和官能团发生了变化，导致其热解产物的组成和分布存在差异。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fce/10609383/470dd8c89973/molecules-28-07074-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fce/10609383/c0ebcb4154fa/molecules-28-07074-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fce/10609383/4cc08f536f67/molecules-28-07074-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fce/10609383/146975d90c69/molecules-28-07074-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fce/10609383/660c6c757da0/molecules-28-07074-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fce/10609383/80d6ed4d8e40/molecules-28-07074-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fce/10609383/6a3e2011681e/molecules-28-07074-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fce/10609383/0bfe3c328401/molecules-28-07074-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fce/10609383/737e818047ea/molecules-28-07074-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fce/10609383/ead15246a547/molecules-28-07074-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fce/10609383/470dd8c89973/molecules-28-07074-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fce/10609383/c0ebcb4154fa/molecules-28-07074-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fce/10609383/4cc08f536f67/molecules-28-07074-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fce/10609383/146975d90c69/molecules-28-07074-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fce/10609383/660c6c757da0/molecules-28-07074-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fce/10609383/80d6ed4d8e40/molecules-28-07074-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fce/10609383/6a3e2011681e/molecules-28-07074-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fce/10609383/0bfe3c328401/molecules-28-07074-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fce/10609383/737e818047ea/molecules-28-07074-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fce/10609383/ead15246a547/molecules-28-07074-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fce/10609383/470dd8c89973/molecules-28-07074-g010.jpg

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