重质油催化裂化催化剂基质材料制备及应用研究

Preparation and Application of Heavy Oil Catalytic Cracking Catalyst Matrix Materials

我国原油重质化趋势明显,如何增加重油大分子的裂化能力成为催化裂化催化剂面临的问题。通过开发一种新型大孔基质材料,经过测定其具有高孔体积、高比表面积等特点,评价结果表明其可以使重油原料分子先预裂化,再进入沸石微孔进行反应,提高渣油转化、同时减少生焦。并进一步将其替代部分催化裂化催化剂基质材料,合成的催化裂化催化剂具有良好酸性结构,应用于重油催化裂化中具有高重油转化、优良焦炭选择性。

The trend of crude oil becoming heavier in China is obvious,how to increase the cracking capacity of heavy oil macromolecules has become a problem faced by catalytic cracking catalysts.A new macroporous matrix material with high pore volume and high specific surface area was developed.The evaluation results showed that the heavy oil raw material molecules could precrack and then enter the zeolite micropore to improve slag oil conversion and reduce coke.The catalytic cracking catalyst prepared by partially using the matrix material had good acid structure,and high heavy oil conversion and excellent coke selectivity in heavy oil catalytic cracking process.