Purification law of slurry oil withdrawal in the catalytic cracking of heavy oil by subsidence

Based on the experimental data of subsidence purification of high-temperature slurry oil, the mathematical models of size grade of catalyst, density-temperature and viscosity-temperature characteristic of slurry oil, time, depth and temperature of subsidence to the purification efficiency of slurry oil are investigated through the theoretical analysis and mathematical regression. The results of model predictive calculations show that the complex interrelation coefficient of the model equation is 0.971 2, and the model has good accuracy. The mathematical model can provide reliable prediction for the continuous production of industry.