SHN-01F裂解汽油一段加氢镍基催化剂的表征和性能

采用H_2-TPR、XPS和XRD方法对SHN-01F催化剂进行了表征。表征结果显示,SHN-01F催化剂中Ni晶粒小,粒径分布窄,分散良好。在连续加氢装置上,分别以工业C_5～C_9~+全馏分裂解汽油和C_6～C_8中间馏分裂解汽油为原料,模拟工业生产工况对SHN-01F催化剂进行了评价;考察了工艺条件、SHN-01F催化剂的抗干扰性、稳定性和老化-再生性能等。实验结果表明,SHN-01F催化剂具有优良的操作性能,在H_2与原料油体积比为80:1～120:1、液态空速为3.75～5.00h~(-1)的条件下均具有良好的活性;SHN-01F催化剂对胶质、水、噻吩硫等杂质的抗干扰性能较好;SHN-01F催化剂稳定性良好,综合性能优良,具有良好的工业应用前景。

Characterization and Performance of SHN-01F Nickel-Based Catalyst for First-Stage Hydrogenation of Pyrolysis Gasoline

SHN-01F nickel-based catalyst was characterized by means of H_2-TPR,XPS and XRD, and used in first-stage selective hydrogenation of pyrolysis gasoline with C_5-C~+_9 rude pyrolysis gasoline(RPG)as feedstock under high LHSV.The results showed that SHN-01F catalyst was good in small nickel nano-crystal grain,narrow particle size distribution and dispersity.Evaluation of SHN- 01F catalyst was carried out in a continuous hydrogenation unit with C_5-C~+_9 and C_6-C_8 as feedstocks under industrial operation conditions.The evaluations involved the operation conditions of the selective hydrogenation,effects of contaminants(colloid,water and thiophene)on the selective hydrogenation, the catalyst stability and aging-regeneration of the catalyst.The SHN-01 F catalyst possessed excellent performance under the operation conditions:V(H_2):V(oil)80:1-120:1 and the fresh pyrolysis gasoline LHSV 3.75-5.00h~(-1).The SHN-01F catalyst demonstrated good synthetical performance under low-temperature,high LHSV and feedstock with contaminants,and its service life was long.