Heat Transfer Process Simulation for Biomass Delayed Coking of Residual Oil

Biomass delayed coking is a new biomass pyrolysis technology.The heat transfer between the biomass particle and residual oil is an important step of the biomass delayed coking process.The paper presents a model for heat transfer between the bulk oil phase and the spherical biomass particles in delayed coking and its numerical solution using the node method for intra-particle heat conduction.Simulations were performed to illustrate the effects of particle size,heating rate and heat transfer coefficient on intra-particle temperature and temperature difference profiles.The results show that the largest intra-particle temperature difference is proportional to square of the radius and the heating rate and that the temperature difference of the oil-particle interface is inversely proportional to the heat transfer coefficient.