新疆淖毛湖煤直接液化反应行为研究  

Study on the direct liquefaction behaviors of Xinjiang Naomaohu coal

作　　者：单贤根[1] 舒歌平[1] 曹雪萍[1] 王洪学[1] 高山松[1] SHAN Xiangen;SHU Geping;CAO Xueping;WANG Hongxue;GAO Shansong(National Engineering Laboratory for Direct Coal Liquefaction,China Shenhua Coal to Liquid and Chemical Company Shanghai Research Institute,Shanghai 201108,China)

机构地区：[1]中国神华煤制油化工有限公司上海研究院煤直接液化国家工程实验室,上海201108

出　　处：《洁净煤技术》2021年第4期77-82,共6页Clean Coal Technology

基　　金：国家重点研发计划资助项目(2016YFB0600303)。

摘　　要：为研究新疆淖毛湖煤直接液化反应特性和产品分布规律,在0.5 L间歇式高压釜中,以四氢萘为溶剂,纳米氧化铁为催化剂及S为助剂,考察了不同反应温度、反应时间条件对煤转化率和液化产物收率的影响。结果表明:淖毛湖煤易液化,在反应器温度刚加热到425℃时,煤转化率和液化油收率已分别达到96.6%、56.68%;随着反应温度的升高以及反应时间的延长,煤转化率、氢耗、气体产率、油收率逐渐增加,而沥青类物质产率下降,水产率基本保持不变;当反应温度进一步增加以及反应时间继续延长,轻质油将会发生裂解,导致气体产率进一步增加,而油收率有所降低。当反应温度为455℃、反应时间为80 min时,煤转化率达到99.6%,油、沥青和气体收率分别为73.42%、1.64%、16.61%,氢耗为4.85%。基于液化试验结果,建立了5集总的反应动力学模型,采用优化算法获得动力学模型参数,煤转化率、沥青类物质和油气收率的模拟值和试验值的相对误差分别为0.5%、1.0%、8.0%。In order to study the direct liquefaction characteristics and product distribution of Naomaohu coal in Xinjiang,the effects of reaction temperature and reaction time on the yield of liquefied products were investigated in the 0.5 L batch autoclave with tetrahydronaphthalene as solvent,nano-iron oxide as catalyst and S as a promoter.The results show that Naomaohu coal is easy to be liquefied.When the reaction temperature just rises to 425℃,the conversion is up to 96.6%,and the oil yield is 56.68%.With the increase of reaction temperature and reaction time,coal conversion,hydrogen consumption,gas yield,and oil yield gradually increase,while the yield of asphaltic substances decreases and the water yield remains basically unchanged.Then,as the reaction temperature increases further and the reaction time continues to extend,the light oil will be further cracked,leading to further increase in gas yield and decrease in oil yield.When the reaction temperature is 455℃and the reaction time is 80 min,the conversion rate of coal reaches 99.6%,the yields of oil,asphaltic substances,and gas are 73.42%,1.64%,and 16.61%,respectively,and the hydrogen consumption is 4.85%.According to the law of liquefaction reaction,five lumped reaction kinetic models were established.The Kinetic model parameters were obtained by using the optimization algorithm.The relative errors of the simulated and experimental values of coal conversion,asphalt substances,and oil and gas yield are 0.5%,1%,and 8%,respectively.

关 键 词：煤直接液化 烟煤 反应性能 动力学模型 

分 类 号：TQ53[化学工程—煤化学工程] TK114[动力工程及工程热物理—热能工程]