不同溶剂预处理对神府低变质煤热解特性影响的研究  

Effect of different solvent pretreatment on pyrolysis characteristicsof Shenfu low-metamorphic coal

作　　者：马越儿 张召 常慧 姜新阳 蒋鹏飞 李新平 赵欣雨 汪杨 童树华 MA Yue-er;ZHANG Zhao;CHANG Hui;JIANG Xin-yang;JIANG Peng-fei;LI Xin-ping;ZHAO Xin-yu;WANG Yang;TONG Shu-hua(College of Bioresources Chemical and Materials Engineering,Shaanxi University of Science&Technology,Xi’an 710021,China;College of Mechanical and Electrical Engineering,Shaanxi University of Science&Technology,Xi’an 710021,China;Zhejiang Jinchang Specialty Paper Co.,Ltd.,Quzhou 324404,China)

机构地区：[1]陕西科技大学轻工科学与工程学院,陕西西安710021 [2]陕西科技大学机电工程学院,陕西西安710021 [3]浙江金昌特种纸股份有限公司,浙江衢州324404

出　　处：《应用化工》2023年第11期3027-3031,共5页Applied Chemical Industry

基　　金：国家自然科学基金面上基金(22171170);国家自然科学基金青年基金(21703131);陕西省自然科学基础研究计划(2021JQ-555);陕西科技大学自然科学预研基金(2019BJ-34);陕西省重点研发计划(2022GY-279)。

摘　　要：采用乙醇和正己烷对神府低变质烟煤(SF)进行预处理,并在固定床热解装置上进行慢速热解,探究预处理对煤热解特性的影响。采用X射线衍射仪(XRD)、红外光谱法(FTIR)、热重(TG)、气相色谱-质谱联用法(GC-MS)和气相色谱法(GC)对煤预处理前后变化及热解产物进行分析。结果表明,预处理能不同程度促进SF煤向轻质产物的转化,并富集焦油中的芳香化合物,乙醇预处理后,焦油中芳香烃相对百分含量增加明显(达47.99%),正己烷预处理后,焦油中苯酚相对百分含量增加(达30.43%)。Shenfu low-metamorphic bituminous coal(SF)was pretreated with ethanol and n-hexane and then pyrolyzed at a slow rate in a fixed-bed pyrolysis plant to explore the influence of pretreatment on the pyrolysis characteristics of the coal.The changes of coal before and after pretreatment and the pyrolysis products were analyzed by X-ray diffractometry(XRD),infrared spectroscopy(FTIR),thermogravimetric(TG),gas chromatography-mass spectrometry(GC-MS)and gas chromatography(GC).The results showed that pretreatment could promote the transformation of SF coal into light products and enrich the aromatic compounds in tar.After ethanol pretreatment,the relative percentage of aromatic hydrocarbons in tar increased significantly(up to 47.99%),and the relative percentage of phenol in tar after n-hexane pretreatment increased significantly(up to 30.43%).

关 键 词：神府低变质烟煤 溶剂预处理 固定床 热解 芳香类化合物 

分 类 号：TQ530.2[化学工程—煤化学工程]