摘要
考察了ＮａＹ 分子筛晶粒变小对其稳定性能及催化剂活性的影响。ＮａＹ 分子筛晶粒适当变小，可提高催化剂活性，但当ＮａＹ 分子筛晶粒小于４００ ｎｍ 时，则会降低催化剂活性。选定合适的小晶粒（５４３ ｎｍ ） ＮａＹ 分子筛制成催化剂，经固定流化床评价表明，可使催化剂的转化率和轻质油收率分别提高１．７４个百分点和２．２７ 个百分点，总液体收率增加１．９４ 个百分点，焦炭产率略降低。
The effects of minifying crystal particle size of NaY zeolite on catalytic performance were investigated. Minifying crystal particle size of NaY zeolite can increase the cracking activity of the catalyst. However, if the average crystal particle size of the NaY would less than 400nm, which led to the decreasing in the cracking activity of the catalyst. The tests were conducted on a fixed fluidized bed reactor. The catalyst prepared by properly small crystal particle size in comparison with the catalyst prepared by normal crystal particle size, the conversion was increased by 1.74%; the light oil and total liquid yields were increased by 2.27% and 1.94% respectively; and the coke yield was slightly decreased.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2000年第1期54-57,共4页
Petroleum Processing and Petrochemicals
