A pretreatment method for removing solid particles from catalytic cracking oil slurry and its application

Abstract

The invention discloses a pretreatment method for removing solid particles from catalytic cracking oil slurry and its application. The method comprises the following steps: performing cavitation treatment on the catalytic cracking oil slurry before removing solid particles to improve the physical properties of the catalytic cracking oil slurry. Through the above methods, the physical properties of the catalytic cracking oil slurry, especially the component structure of colloid and asphaltene, can be improved, and the problems of high viscosity and colloid asphaltene blocking the filter element during the filtration of catalytic cracking oil slurry can be effectively solved, and further The purpose of improving filtration efficiency and prolonging filtration cycle.

Description

Technical field [0001] The present invention relates to the field of petrochemical technology, and in particular, a method involving a catalytic cracking oil pulp removal solid particle pretreatment. Background technique [0002] Catalytic cracking oil pulp is a special by-product produced during heavy oil catalytic cracking. Since its own physical properties, large weight, large molecular weight, high viscosity, especially more catalyst solid particles (content of 2000 ppm) This class factor limits the utilization of catalytic cracking oil. With the deepening of the degree of reconstruction of the catalytic cracking raw material, the yield of catalytic oil pulp also increases, how to solve the utilization of catalytic oil pulp is imminent. Since the catalytic oily pulp is rich in heavy aromatic hydrocarbons, it can be further treated as a fuel oil, and is also a raw material for producing high-quality oil coke, carbon black and rubber aid, but the higher solid particles in the c...

AI Technical Summary

Problems solved by technology

Because the catalytic oil slurry is rich in heavy aromatics, it can be further processed and used as fuel oil. It is also a raw material for producing high-quality petroleum coke, carbon black and rubber additives, but the high solid particle content in the catalytic oil slurry limits its further development. Comprehensive utilization of

When it is directly used as a heavy fuel blending component, the solid particles in the oil slurry will accelerate the wear of the burner of the heating furnace, resulting in dust accumulation in the furnace tube, which seriously affects the thermal efficiency; as a raw material for the production of carbon black and rubber filler oil, it is required to catalyze the oil in the oil slurry The content of catalyst particles is less than 500ppm; the production of needle coke requires the content of catalyst particles in the catalytic oil slurry to be less than 100ppm; the production of carbon fiber requires the content of catalyst particles in the catalytic oil slurry to be less than 20ppm, so the removal of catalyst solid particles from catalytic cracking oil slurry is an urgent problem to be solved

[0003] At present, the method of removing solid catalyst particles from catalytic cracking oil slurry is mainly aimed at the improvement of separation equipment and separation process. For example, the improvement of separation equipment has a large workload and high investment cost, and the improvement of separation process may bring other Side reactions or impurities that reduce product quality