新疆和丰煤的组成结构特征与解聚技术研究进展  

Research progress on composition structure and depolymerization technology of Hefeng coal from Xinjiang

作　　者：何小强 马亚亚 莫文龙[1,4] 魏贤勇 郭佳 郭文仓[4] HE Xiao-qiang;MA Ya-ya;MO Wen-long;WEI Xian-yong;GUO Jia;GUO Wen-cang(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),College of Chemical Engineering,Xinjiang University,Urumqi 830046,China;State Key Laboratory of Coal Conversion,Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan 030001,China;Qingdao Institute of Bioenergy and Bioprocess Technology,Chinese Academy of Sciences,Qingdao 266101,China;Xinjiang Energy Co.,Ltd.,Urumqi 830000,China;Key Laboratory of Coal Processing and Efficient Utilization,Ministry of Education,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]新疆大学化工学院,省部共建碳基能源资源化学与利用国家重点实验室,煤炭清洁转化与过程新疆维吾尔自治区重点实验室,新疆乌鲁木齐830046 [2]中国科学院山西煤炭化学研究所,煤转化国家重点实验室,山西太原030001 [3]中国科学院青岛生物能源与过程研究所,山东青岛266101 [4]新疆能源(集团)有限公司,新疆乌鲁木齐830000 [5]中国矿业大学煤炭加工与高效洁净利用教育部重点实验室,江苏徐州221116

出　　处：《应用化工》2023年第12期3449-3453,共5页Applied Chemical Industry

基　　金：新疆维吾尔自治区区域协同创新专项(2022E01057);新疆能源(集团)有限责任公司博士后项目。

摘　　要：综述了和丰煤组成结构、萃取/热溶和热解技术的研究进展。和丰煤的碳骨架结构主要由脂肪碳和芳香碳组成。含氧官能团主要包含羟基和羰基,氮元素以吡啶氮和吡咯氮的存在形式为主,有机硫主要以噻吩和亚砜的形式存在。煤中易解离小分子化合物主要由芳烃、烷烃、烯烃、酯和醇类化合物组成。低碳烷醇能够选择性的破坏煤中的含氧桥键,有利于从煤中分离含氧类化合物。在温和条件下可以利用萃取/热溶提取技术从和丰煤中提取缩合芳烃和含氧化合物等高附加值化学品。溶胀预处理对和丰煤的热解具有促进作用,但溶胀受溶剂类型、成本等因素制约,难以实现工业化应用。某些负载型催化剂和含金属阳离子的盐类化合物在一定程度上能够抑制和丰煤热解焦油的产生,促进煤中重质组分的分解,提高煤焦油的品质。和丰煤的化学组成结构、共价键的类型、含氧官能团和杂原子的存在形式仍不清晰,热解机理以及热解焦油产物的调控还需进一步研究。The research progress on the composition,structure,extraction/thermal dissolution and pyrolysis technology of Hefeng coal has been reviewed in detail.The carbon skeleton structure of Hefeng coal is mainly composed of aliphatic and aromatic carbon.O Mainly exist in the form of hydroxyl and carbonyl groups,N mainly exist in the form of pyridine and pyrrole,and organic S mainly exists in the form of thiophene and sulfoxide.The easily dissociated small molecular compounds from Hefeng coal mainly consist of aromatic hydrocarbons,alkanes,olefins,esters and alcohols.The oxygen-containing bridge bond can be selectively destroyed by low-carbon alkanols,which is conducive to the separation of oxygen-containing compounds from coal.The high value-added chemicals such as condensed aromatics and oxygenated compounds can be extracted from Hefeng coal using extraction/thermal solubilization techniques under mild conditions.Swelling pretreatment can promote the pyrolysis of Hefeng coal,but the swelling effect is limited by solvent type,cost and other factors,making it difficult to achieve industrial application.During the pyrolysis process,some supported catalysts and salt compounds containing metal cations can inhibit the production of coal tar to a certain extent,promote the decomposition of heavy components in coal,and then improve the quality of coal tar.The composition structure of Hefeng coal,the type of covalent bond,the existence form of oxygen-containing functional groups and heteroatoms are still unclear.The pyrolysis mechanism of Hefeng coal and the regulation of pyrolysis tar products need to be further studied.

关 键 词：和丰煤 组成结构 萃取 热溶 热解 

分 类 号：TQ530.2[化学工程—煤化学工程]