Catalytic cracking slurry oil solid particle removal pretreatment method and application thereof

Abstract

The invention discloses a catalytic cracking slurry oil solid particle removal pretreatment method and application thereof. The method comprises the following steps: cavitation treatment is carried out on catalytic cracking slurry oil before solid particles are removed, so that the physical properties of the catalytic cracking slurry oil are improved. By adopting the method, the physical properties of the catalytic cracking slurry oil, especially the component structures of colloid and asphaltene, can be improved, the problems that the viscosity is high and the colloid and the asphaltene blocka filter element in the catalytic cracking slurry oil filtering process can be effectively solved, and the purposes of further improving the filtering efficiency and prolonging the filtering period are achieved.

Description

technical field [0001] The invention relates to the technical field of petrochemical industry, in particular to a pretreatment method for removing solid particles from catalytic cracking oil slurry and its application. Background technique [0002] Catalytic cracking oil slurry is a special by-product produced in the process of catalytic cracking of heavy oil. Due to its own physical characteristics - large specific weight, high molecular weight and high viscosity, it especially contains more catalyst solid particles (content above 2000ppm) , this series of factors limit the utilization rate of FCC oil slurry. With the deepening of the heavy degree of catalytic cracking feedstock, the yield of catalytic oil slurry also increases, how to solve the problem of utilization of catalytic oil slurry is imminent. 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 petrole...

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