褐煤近临界水氧化液化固体残渣特性研究  

Characteristics of Residues from Lignite Liquefaction in Near-Critical Water

作　　者：陶定坤 冉景煜[1] 张力[1] 蒲舸[1] 杨仲卿[1] 秦昌雷[1] 杜学森[1] TAO Ding-kun;RAN Jing-yu;ZHANG Li;PU Ge;YANG Zhong-qing;QING Chang-lei;DU Xue-sen(Key laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University, Chongqing 400030, China)

机构地区：[1]重庆大学,低品位能源利用技术及系统教育部重点实验室,重庆400030

出　　处：《新能源进展》2017年第3期226-230,共5页Advances in New and Renewable Energy

基　　金：重庆市重点自然科学基金项目(cstc2013jj B90003)

摘　　要：采用XRD和FT-IR研究了褐煤近临界水和低温条件下氧化液化剩余固体残留物结构的变化特性。结果表明,褐煤在近临界水条件下快速有效地发生了降解,生成了部分水溶性物质;其固体残留物中芳香层的堆砌度和延展度下降,芳香结构聚合程度大幅降低;氨基、芳香醚、亚甲基和酚羟基含量明显降低;烷基醚最稳定,基本没有反应;羧基完全消失,羟基结构中OH···OH含量最多,比羧基稳定。XRD and FT-IR were used to analyze the structural characteristics of the solid residues from lignite oxidation innear-critical water and low-temperature water.The results showed that the lignite was degraded rapidly and effectivelyunder near-critical water condition,and water-soluble substances were formed.The height and diameter of the aromaticlayer in the residues dramatically decreased.The contents of amino,methylene and phenolic hydroxyl decreasedsignificantly,alkyl ether was the most stable,almost have no reaction;carboxyl completely disappeared,OH···OH is morestable than carboxyl.

关 键 词：侯马褐煤 近临界水 煤液化 XRD FT-IR 固体残留物 

分 类 号：TK0[动力工程及工程热物理] TQ536[化学工程—煤化学工程]