摘要
以酸预处理后的催化裂化(FCC)催化剂三旋细粉为原料,氯化稀土为改性剂,采用原位晶化法,制备了新型基质。用该基质替代部分高岭土,将基质、铝溶胶、拟薄水铝石、高岭土和稀土Y型分子筛按照一定质量比混合后喷雾成型,洗涤得到FCC催化剂再造剂,并在44万t/a FCC装置上进行了工业化应用。结果表明:与FCC新鲜催化剂相比,再造剂的比表面积和孔体积均有所增加,微反活性略有提高;二者平衡剂活性均维持在较高水平(约69%),重金属含量变化不大;在操作条件相似的情况下,使用三旋细粉再造剂后,汽油、轻质油和总液体收率分别提高了1.01,0.82,0.16个百分点,液化气和柴油收率略有下降。
The new matrix was prepared by in-situ crystallization method with pretreated the catalytic cracking catalyst powder from three-stage cyclone separators（ TSS） as raw material,rare earth chloride as modifier. The part of kaolin was replaced by the new matrix. After washing and spray shaping of the mixture of new matrix,alumina sol,pseudo-boehmite,kaolin,rare earth Y type molecular sieve blended according to the mass ratio,FCC catalyst recycling catalyst was prepared,and it was used in a440 kt / a FCC unit. The industrial application showed that the specific surface area,pore volume and micro-activity of recycling catalyst were higher than those of FCC fresh catalyst. Both of two catalyst＇s the equilibrium catalyst activity maintained at a higher level（ about 69%）,and heavy metal content were almost the same. At the similar operating condition,the gasoline,light oil and total liquid yield increased by 1. 01,0. 82,0. 16 percent points after using the recycling catalyst. But the yield of liquefied gas and diesel declined slightly respectively.
出处
《石化技术与应用》
CAS
2016年第6期480-483,共4页
Petrochemical Technology & Application
关键词
催化裂化催化剂
三旋细粉
原位晶化法
工业应用
catalytic cracking catalyst
powder from three-stage cyclone separators
in-situ crystallization method
industrial application
