关键词: β 分子筛, 加氢裂化, 催化剂, 中油选择性

Abstract: A brief introduction of the characteristics of zeolite β structure was presented. The hydrocracking performance of catalyst containing zeolite β was studied on a 200 mL hydrocracking device, and compared with catalyst containing zeolite Y and amorphous silica-alumina catalyst. Results show that under the same process conditions, catalysts containing zeolite β exhibit better catalytic performance during hydrocracking than the others: the selectivity of middle distillates is more than two percentage points higher, the setting point of diesel fractions is 4－12℃ lower, as well as good isomerization property, high cracking activity and strong nitrogen tolerance, which indicates that hydrocracking catalyst containing zeolite β can be used for maximizing middle distillates production.

Key words: β Zeolite, Hydrocracking, Catalyst, Middle distillates selectivity