关键词: 催化裂化, 重油, 焦炭, 催化剂

Abstract: The catalytic cracking catalyst with low coke-making and high heavy oil conversion was prepared using new matrix material and acidity modification technology. The catalytic cracking catalyst was characterized by means of nitrogen adsorption/desorption and temperature-programmed desorption of ammonia (NH3-TPD) techniques. The catalytic cracking performance of the catalyst was evaluated in a FCC riser reactor. The results indicated that compared with the catalyst in using, the prepared catalyst had the advantages of higher surface area, mesoporous volume, lower strong acid sites and higher weak acid sites. Laboratory evaluation results showed that compared with the catalyst in using, the heavy oil yield and coke yield of the prepared catalyst decreased by 1.37 and 0.26 percentage points respectively. The industrial application results showed that the catalyst possessed the characteristics of strong heavy oil conversion ability and good coke selectivity.

Key words: catalytic cracking, heavy oil, coke, catalyst