分散型催化剂在煤/重油共炼体系中的加氢抑焦作用  

Hydrogenation and coke-suppression performance of dispersed catalyst in coal/heavy oil co-processing reactions

作　　者：杨露 刘聪聪 孟彤彤 张博远 杨腾飞 邓文安[3] 王晓斌 YANG Lu;LIU Congcong;MENG Tongtong;ZHANG Boyuan;YANG Tengfei;DENG Wen’an;WANG Xiaobin(School of Chemistry and Chemical Engineering,Shandong University of Technology,Zibo 255000,Shandong,China;Product Quality Inspection Research Institute,Zibo 255000,Shandong,China;College of Chemical Engineering,China University of Petroleum,Qingdao 266580,Shandong,China)

机构地区：[1]山东理工大学化学化工学院,山东淄博255000 [2]淄博市产品质量检验研究院,山东淄博255000 [3]中国石油大学(华东)化学化工学院,山东青岛266580

出　　处：《化工学报》2024年第7期2556-2564,共9页CIESC Journal

基　　金：国家自然科学基金项目(21776166);山东省泰山学者专项(tsqn202211141)。

摘　　要：采用马瑞常渣与印尼褐煤进行煤/重油加氢共炼反应,研究了马瑞常渣脱除沥青质和催化剂加量对共炼体系加氢转化深度的影响。利用XRD、XPS、TEM、TG、^(13)C NMR和SEM对共炼反应后固体残渣进行表征。结果表明,沥青质的存在会促进生焦过程并显著降低共炼体系中煤的转化效率,达到同等转化深度时脱沥青油体系中所需催化剂加量大幅度降低。对于沥青质含量较高的马瑞常渣体系,催化剂反应后固体残渣中有机碳质组分芳香度降低,含氧组分比重下降,且残余有机碳也更易发生热解,表明催化剂对反应体系中碳质组分优异的氢解作用。固体残渣的微观形貌分析则显示出催化剂对生焦过程的良好抑制效果,有助于提高反应体系的加氢转化深度。The influence of asphaltene removal and catalyst dosage on the hydro conversion efficiency of the coal/heavy oil co-processing system using MRAR and Indonesian lignite were investigated.The solid residues after coprocessing reaction were characterized by XRD,XPS,TEM,TG,^(13)C NMR and SEM.The results show that the presence of asphaltene will promote the coking process and significantly reduce the conversion efficiency of coal in the co-processing system.When reaching the same conversion depth,the amount of catalyst required in the deasphalted oil system will be greatly reduced.For the MRAR systems with a relative high asphaltene content,the application of catalyst resulted in a decreased aromaticity of organic carbon components in the solid residues and a reduced proportion of oxygen-containing components.Additionally,residual organic carbon components were more prone to pyrolysis,indicating an excellent hydrogenolysis effect of the catalyst on the carbon components during the reaction process.Microscopic morphology analysis of the solid residues showed that the catalysts exhibited a favorable role in inhibiting coke formation,which helps to improve the hydrogenation conversion depth of the reaction system.

关 键 词：分散 催化剂 加氢 沥青质 生焦 

分 类 号：TQ529[化学工程—煤化学工程]