裂化催化剂胶体连续制备对催化剂性能的影响

EFFECT OF THE CONTINUOUS PREPARATION OF CATALYST SLURRY GEL ON THE CATALYST PERFORMANCE

石油化工科学研究院开发了一种催化剂胶体连续制备技术,在中型试验装置上实现了FCC催化剂胶体连续制备工艺,并与间歇式成胶方式制备的催化剂进行对比。结果表明,与间歇成胶方式相比,采用连续成胶方式,胶体粒度小、催化剂强度高、磨损指数低、微反活性高近3个百分点、转化率高1.35个百分点、焦炭产率低0.41个百分点,其它性能与间歇成胶催化剂基本相同,连续成胶工艺在节能、节水上明显优于间歇成胶工艺。

A continuous preparation technology for catalyst slurry gel was developed by Research Institute of Petroleum Processing and it was realized at a FCC catalyst pilot plant. Comparative tests between continuous technology and intermittent technology of FCC catalyst slurry gel preparation were carried out using a same catalyst formula. Results showed that the particle size of slurry gel prepared by continuous method were smaller; the catalyst prepared by continuous technology exhibited higher mechanical strength, lower attrition resistance index and better catalytic performance, i.e. coke yield was 0.41 percentage points lower, microactivity and conversion was 3 percentage points higher and 1.35 percentage points higher, respectively. Besides, the consumptions of energy and water of the continuous slurry gel preparation were also lower.