低阶煤催化热溶及其热溶产物的研究  

Research on catalytic thermal dissolution of low-rank coal and its thermal dissolution products

作　　者：徐静[1] 于小彬 白金锋[1] 黄峰[1] 李超 XU Jing;YU Xiaobin;BAI Jinfeng;HUANG Feng;LI Chao(School of Chemical Engineering,University of Science and Technology Liaoning,Anshan,Liaoning 114051,China)

机构地区：[1]辽宁科技大学化学工程学院,辽宁省鞍山市114051

出　　处：《中国煤炭》2025年第3期128-135,共8页China Coal

基　　金：2024年辽宁省高校基本科研业务费专项资金资助(LJ212410146004);辽宁省兴辽英才计划项目(XLYC2002063)。

摘　　要：针对低阶煤的分质转化和高附加值利用,以神华黑山长焰煤为原料,在反应温度为350℃、初始压力为3 MPa的氢气气氛下进行热溶分质转化实验。选择Fe、FeS、Fe_(2)O_(3)和FeSO4这4种铁基催化剂进行温和催化热溶,并通过GC、GC-MS、FT-IR和XRD对热溶产物中轻质气体、热溶油和沥青质进行分析。研究结果表明,FeSO4的催化活性最佳,在FeSO4作用下沥青质产率达到41.4%、油气产率达到13.5%,对比无催化剂的产率,分别提高了7.6%和1.2%。铁基催化剂的加入使气体产物中CH_(4)含量增加,CO、C_(2)~C_(4)烃类化合物含量降低,并可以促进煤中大分子化学键断裂,提高了热溶油中脂肪族和芳香族化合物含量。Aiming at the mass conversion and high value-added utilization of low rank coal,catalytic thermal dissolution experiments were conducted using Shenhua Heishan long-flame coal under hydrogen atmosphere at 350℃and 3 MPa initial pressure.The light gases,thermal dissolution oils,and asphaltenes in the products were analyzed via gas chromatography(GC),GC-mass spectrometry(GC-MS),Fourier-transform infrared spectroscopy(FT-IR),and X-ray diffraction(XRD).Results demonstrated that FeSO_(4)exhibited the highest catalytic activity,achieving asphaltene yields of 41.4%and oil-gas yields of 13.5%,representing increases of 7.6%and 1.2%,respectively,compared to non-catalytic conditions.The addition of iron based catalyst increases the content of CH_(4)and decreases the content of CO and C_(2)-C_(4)hydrocarbons in the gas products.Iron based catalyst can promote the break of chemical bonds of macromolecules in coal and increase the content of aliphatic and aromatic compounds in thermal dissolution oils.

关 键 词：低阶煤 铁基催化剂 催化热溶 沥青质 热溶残渣 

分 类 号：TQ536[化学工程—煤化学工程] X322[环境科学与工程—环境工程]