Abstract：With using Ni-Mo-W/γ-Al2 O3 catalyst, effect of nitrogen compounds on the running stability of ultra-deep hydro-desulfurization diesel catalyst was studied on a pilot plant unit. The reasons of catalyst deactivation were investigated by different characterization techniques which included elemental analysis, nitrogen adsorption-desorption, thermal gravity-mass spectrometry (TG-MS), X-ray photoelectron spectroscopy (XPS) and high resolution transmission electron microscopy (TEM). Experimental results suggested that nitrogen compounds mainly impacted on catalyst initial activity, and led to initial reaction temperature 7 to 10℃ higher. However, nitrogen compounds have little impact on catalyst stability. With/without nitrogen compounds adding into the feedstocks, the main reasons of catalyst deactivation were all mainly related to the surface coking, loss of pore volume and decrease of edge tungsten.
葛泮珠，丁石，张乐，李大东，聂红. 含氮化合物对柴油超深度加氢脱硫催化剂运行稳定性的影响[J]. 石油学报（石油加工）, 2019, 35(1): 1-10.
GE Panzhu, DING Shi, ZHANG Le, LI Dadong, NIE Hong. Effect of Nitrogen Compounds on the Running Stability of Ultra-Deep Hydro-desulfurization Diesel Catalyst. ACTA PETROLEI SINICA (PETROLEUM PROCESSING SECTION, 2019, 35(1): 1-10.
