Steady State Modeling and Simulation of Hydrocracking Reactor

Hydrocracking has great importance in present day refining due to strict environmental and norms of quality of fuel. In recent years the demand for middle distillate and gasoline has increased tremendously while that of heavy gas has decreased. In the present work we have modeled and then applied five lump scheme to hydrocracker reactor. The first order kinetics was assumed for the conversion in the model developed and Pseudo components were used to simulate the model. The system is modeled as an isothermal tubular reactor with an axial dispersion, where the hydrogen flows upward concurrently with the oil while the solid catalyst particles stay inside the reactor in an expanded bed regime. MATLAB 7 was used to solve the model for a five lump scheme for different values of liquid superficial velocity, reactor length and temperature.