文章摘要

文章信息/Info

Author(s):: LI Tao; （Refinery of Liaoyang Petrochemical Company，PetroChina，Liaoyang 111003，China）

Keywords:: hydrocracking; overheating; catalyst; pore structure; acid strength; acid content

摘要:: 为了考察超温对加氢裂化催化剂性能的影响，对新鲜加氢裂化催化剂PHC-05进行了高温耐受试验，并对卸出的超温催化剂PHC-05和补充精制催化剂PHT-01进行了表征。结果表明：高温焙烧后催化剂PHC-05的比表面积、孔容和Y分子筛结晶度大幅下降；卸出催化剂PHC-05的比表面积降低，孔容变化不明显，平均孔径略有增大，卸出下床层补充精制催化剂PHT-01的比表面积和孔容均降低；卸出催化剂PHC-05中上1，上2，上3，下1（按卸剂过程自上至下的顺序进行编号）的酸强度降幅较小，上1，上2的B酸总酸量保留相对较好，但是L酸酸量明显下降，其他样品B酸和L酸酸量均有较大的降低幅度。

Abstract:: In order to investigate the effect of overheating on the performance of catalyst， the high temperature resistance test of fresh catalyst PHC-05 was carried out， and the discharged overheating catalyst PHC-05 and the refined catalyst PHT-01 were characterized. The results showed that the specific surface area， pore volume and crystallinity of Y molecular sieve of PHC-05 decreased significantly after high temperature calcination. The specific surface area of the discharged catalyst PHC-05 decreased， the pore volume did not change significantly， the average pore size increased slightly， and the specific surface area and pore volume of the discharged catalyst PHT-01 decreased. In the discharged catalyst PHC-05， the acid strength of top 1， top 2， top 3， and bottom 1 （numbered from top to bottom during the discharged process） decreased little， and the total acid content of top 1 and top 2 was relatively well retained， but the acid content of L acid decreased significantly， and the acid content of B acid and L acid in other samples decreased greatly.