燃料化学学报2016，Vol.44Issue(4)：385-393,9.
炼焦煤的官能团结构分析及其黏结性产生机理
Structural analysis of functional group and mechanism investigation of caking property of coking coal
摘要
Abstract
Eleven coking coals were used in this study and FT-IR and the caking index tests were carried out. The peak separation and quantitative calculation of FT-IR spectra were performed by using Peakfit Software and the relationship between caking property and typical functional groups of coal was investigated. The results showed that there was a close relationship between caking property and FT-IR spectra of coal, especially in the regions of 3 000-2 800 cm-1 and 3 700-3 000 cm-1 . The component with aliphatic structure was a major determinant of coal caking property. Usually the shorter chain length or the higher branching degree of coal aliphatic structure was, the higher caking property will be. The caking property was codetermined by aliphatic structure and hydrogen bond (including -OH or -NH) and there was a synergic relationship between them. When the condensed degree of structural unit was low and the amount of bridge bonds was higher, the plastic mass based on structural unit with moderate molecular weight can be generated regardless of the coal molecule size. The most dominant sort of binding forces in coal was hydrogen bond. An associative structure even supermolecular structure, which was broken and changed into plastic mass during the state of metaplast, was formed when a number of hydrogen bonds were associated together. The existence of plastic mass was beneficial to the transformation of metaplast into semi-coke and further acquisition of well caking property.关键词
炼焦煤/FT-IR/定量分析/Peakfit/黏结性Key words
coking coal/FT-IR/quantitative analysis/Peakfit/caking property分类
化学化工引用本文复制引用
李祥,秦志宏,卜良辉,杨状,沈辰阳..炼焦煤的官能团结构分析及其黏结性产生机理[J].燃料化学学报,2016,44(4):385-393,9.基金项目
The project was supported by National Natural Science Foundation of China (51274201), the Major State Basic Research Devolopment Program of China (973 program,2012CB214900), the Coal Joint Fund from National Natural Science Foundation of China and the Priority Academic Program Development of Jiangsu Province Higher Education Institutions.@@@@国家自然科学基金(51274201),国家重点基础研究发展规划(973计划,2012CB214900),国家自然科学基金煤炭联合基金(U1361116)和江苏高校优势学科建设工程项目资助 （51274201）
