失活煤焦油加氢精制催化剂的再生性研究  

Regeneration behavior of a coal tar deactivated hydrorefining catalyst

作　　者：王颖[1] 高明明[2] 高蓉[3] 孙晓红[1] 李稳宏[1] WANG Ying GAO Mingming GAO Rong SUN Xiaohong LI Wenhong(School of Chemical Engineering, Northwest University, Xi＇an 710069, China Department of Technology, Northwest Institute for Non-ferrous Metal Research, Xi＇an 710016, China The No. 451 Hospital, Chinese People＇s Liberation Army, Xi＇an 710054, China)

机构地区：[1]西北大学化工学院,陕西西安710069 [2]西北有色金属研究院技术部,陕西西安710016 [3]中国人民解放军第451医院,陕西西安710054

出　　处：《西北大学学报（自然科学版）》2017年第3期396-400,413,共6页Journal of Northwest University（Natural Science Edition）

基　　金：国家自然科学青年基金资助项目(21206136);陕西省科技厅科技统筹创新工程基金资助项目(2014KJCL01-09)

摘　　要：采用等体积浸渍法制备Ni W/γ-Al_2O_3型煤焦油加氢精制催化剂,利用TG-DTA确定失活催化剂再生条件,利用XRD,BET,XRF,XPS等手段对新鲜、失活及再生催化剂的物化性能进行了表征分析,并在高压反应釜上评价新鲜及再生催化剂的活性。实验结果表明,与新鲜催化剂相比,再生催化剂比表面积、孔容、孔径分别降低8.36%,10.53%,4.58%;失活催化剂再生后,C,N及S的脱除率在94%以上,但仍有少量杂质元素存在,催化剂物相基本得到恢复,活性金属分散均匀,团聚不严重,表面活性金属主要以Ni-W-S活性相存在;再生催化剂加氢脱硫(HDS)、脱氮(HDN)效果略低于新鲜催化剂,对反应物的转化率及产物的选择性影响不大,可以重复使用。A coal tar hydrorefining catalyst was prepared by incipient-wetness impregnation method. The deactivated hydrorefining catalyst regeneration condition was confirmed by thermal analysis, X-ray diffraction （ XRD）, N2-adsorption-desorption （ BET ）, X-ray fluorescence （ XRF ）, X-ray photoelectron spectroscopy （XPS） were employed to characterize the deactivated, regenerated and it＇ s fresh catalyst, also the activity of regenerated and fresh catalyst was evaluated using the reaction kettle. The results showed that the specific surface area,pore volume, average pore diameter of the regeneration catalyst all reduced by 8.36% , 10.53% , 4.58% respectively compared with the fresh. It was also found that impurity elements existed in deactivated and regeneration catalyst although the amount of carbon, nitrogen and sulfur decreasing more than 94. 0 wt%. There is no evidence accumulation of active metal on the surface of regeneration catalyst and mainly exists in Ni-W-S style. The HDS and HDN activity of regeneration catalyst is a little lower than that of the fresh cata- lyst, has a good convertion rate of reactant and product selectivity.

关 键 词：加氢精制催化剂 失活 加氢脱硫 加氢脱氮 

分 类 号：TQ426.94[化学工程]