摘要
对以克拉玛依减压蜡油(VGO)为原料、以水溶性分散型单组分催化剂为催化体系的渣油加氢过程所用催化剂进行了分离和表征,得到了催化剂的物相组成和晶体结构。并以克拉玛依 VGO为反应原料,考察了单组分铁、钼、镍催化剂的催化性能。结果表明,在水溶性分散型催化剂存在下的渣油加氢反应体系中,真正起催化作用的是硫化态金属晶体,从VGO临氢热转化可以看出,在加氢反应过程中,不同硫化态催化剂产生活泼氢自由基氢化不饱和基团和抑制缩合生焦的作用各不相同。
Catalysts of the slurry phase hydrocracking were separated from the products of Kelamayi VGO cracking and characterized by XRD to identify the species composition and crystal structure. The catalytic performance of molybdenum, nickel and iron catalysts was studied using Kelamayi VGO as feedstock. The test results showed that when fine dispersing water-soluble catalyst was used in the slurry phase hydrocracking system, the catalytic reactions were mainly performed by the metal sulfides; the tendency of forming active hydrogen free radicals to inhibit the coke formation was different with various metal sulfides, and the molybdenum based catalyst was the best among the three catalysts.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2006年第2期38-41,共4页
Petroleum Processing and Petrochemicals
关键词
渣油
加氢催化剂
水溶性
抑制
焦炭
自由基反应
petroleum residue
hydrogenation catalyst
water-solubility
inhibition
cokefree radical reaction
