煤直接液化低分油加氢脱硫脱氮反应动力学研究  

Kinetics of desulphurization and hydrodenitrification reaction of coal direct liquefaction low temperature separator oil

作　　者：李伟林[1] 朱晓苏[1] 李培霖[1] 王勇[1] 李军芳[1] 

机构地区：[1]煤炭科学研究总院北京煤化工研究分院,北京100013

出　　处：《洁净煤技术》2012年第2期60-64,共5页Clean Coal Technology

基　　金：国家国际科技合作项目(2010DFB63090);煤炭科学研究总院重点技术创新基金(2009ZD02);国家重点基础研究发展计划(973)项目(2011CB201303)

摘　　要：为了进一步了解煤直接液化油中硫氮化合物的形态和性质,采用石油研究中的先进分析手段GC-PFPD和GC-NCD,对煤直接液化低分油进行了分析,获得了详细的硫氮化合物组成含量。结果发现:煤直接液化低分油中含有大量的杂环化合物,S主要以苯并噻吩类和二苯并噻吩类化合物存在,N主要以五元环化合物形式存在。在高压釜中进行了催化剂添加量和不同温度条件下的加氢实验,对总硫总氮的加氢反应动力学进行了研究。通过计算得到了高压釜煤液化油加氢脱硫反应的一级反应动力学模型,且通过模型计算的S含量与反应实测的S含量相对误差仅为7.8%;对实验得到的震荡式高压釜中煤液化油加氢脱氮反应的一级反应动力学模型进行验证,发现相对误差也仅为0.97%。To further study the structures and characteristics of sulfide and nitride in coal direct liquefaction oil（CDLO）,advanced analytical method widely used in petroleum field,GC-PFPD and GC-NCD,are used to study the CDLO.Detailed composition of sulfide and nitrogen compounds are reconignized.The results show that there is large amounts of aromatic hydrocarbon in coal direct liquefaction oil.Sulfide is found to exist mainly as benzothiophene and dibenzothiophene,while nitride exists mainly as five-membered ring compounds.Autoclave hydrogenation experiments,taking catalyst additive amount and temperature as variable,was carried out.Kinetics of hydrodesulfurization（HDS） and hydrodenitrification（HDN） were discussed.Through calculation,first order reaction kinetic model of coal liquefaction oil hydrodesulfurization reaction was built.Compare the sulphur content measured by experiments with that calculated by model,the relative error is just 7.8 percent.First order reaction kinetic model of coal liquefaction oil hydrodenitrification reaction,occurs in oscillatory autoclave,was also tested,the relative error is as small as 0.97 percent.

关 键 词：煤液化油 加氢反应 动力学 直接液化 脱硫脱氮 线性回归 

分 类 号：TQ529[化学工程—煤化学工程] TD849[矿业工程—煤矿开采]