Effect of Heating Rate on Coke Quality and Productivity in Nonrecovery Coke Making

The productivity and coke quality of a nonrecovery oven depends on coal blend, operating parameters, and heating rate. A numerical methodology has been proposed for predicting temperatures of the intermediate points with the help of measured temperature in the coke oven. The model was validated with an actual temperature profile of five industrial ovens. The developed model can predict the temperature profile of the oven for a given set of operating conditions. The heating rate under normal operation was found to be in the range of 0.64-1.17°C/min. The effect of temperature variation inside the oven was also correlated with the coke quality and productivity.