Mathematical Models for Coke and by-product Quality Control

Mathematical models for predicting coke strength and tar quality were developed. The features of these models are as follows :(1) Coke porosity and the abrasion index of the coke pore wall are factors affecting coke strength. Those two indices are correlated with the operating conditions of the coke oven and the properties of the blended coal.(2)Tar quality is determined by the secondary decomposition reaction, which is a function of temperature in the space above the charge and off gas velocity.The models, because of thier good agreement with operational date, can be utilized for the better control of coke strength and tar quality, and thus contribute to stable coke oven operation.