煤演化过程中力化学作用与构造煤结构(点击标题下载全文) 已下载

作者:张玉贵;张子敏;谢克昌

作者单位:太原理工大学一碳化学与化工国家重点实验室河南理工大学瓦斯地质研究所太原理工大学一碳化学与化工国家重点实验室

摘要:应用力化学理论和煤结构分析方法,对煤的力化学作用类型、力化学的能量来源、作用形式及其对煤结构演化的影响进行了研究;结果表明水平挤压应力是煤力化学作用的重要能源,其挤压剪切作用,不仅使煤发生变形、破坏等物理效应,形成了构造煤,而且使煤结构发生一系列的化学效应:一方面煤结构发生聚合、异构、重排、芳构,形成更大分子网络结构;另一方面,在短时间内分子断裂、分解形成液态烃(低分子化合物)和气态烃(瓦斯).作者认为力化学作用是煤结构演化的重要过程,不仅加速煤的变质过程,而且加速烃的转化,有利于低分子化合物和瓦斯的富集,构造煤是力化学作用的产物.

基金:国家重点基础研究(973)项目(G1999022101);河南省重大科技攻关项目(0224680007).;

关键词:力化学;构造煤;大分子结构;低分子化合物;瓦斯;

DOI:10.16186/j.cnki.1673-9787.2005.02.002

分类号:P618.11

Coal Mechanochemstry Action in Coal evolution Process and Tectonic Coal Structure

Abstract:Mechanochemstry is a new science. The paper mainly discusses classification of mechanochemstry types, origin of energy source, style of mechanochemstry action, and its effect on the evolution of coal structure. The horizontal stress is the origin of coal mechanochemstry action, its squeezing action and shearing action enables coal to be deformed, to be crashed, and then a series of physical and chemical effects occur, and tectonic coal is formed. On the one hand, coal structure changes toward the aggregation, isomerization, rearrangement, aromatization, and macromolecule net in coal structure are formed. On the other hand, the breakage and decompostion of coal molecule bond produces liquid hydrocarbon and gasous hydrocarbon. Coal mechanochemstry action acts as the important process in coal evolution, and it not only accelerates the process of coal metamorphism and transformation of hydrocarbon, but also contributes to the accumulation of lower weight molecule composite and gas. Tectonic coal is the product of mechanochemistry action.

 
 
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