Packed bed reactors are important and have gained popularity because of their ideal plug flow behavior, low maintenance cost and reduced loss due to attrition and wear. Here, we wanted to carry out simulation for the same. For development of simulation, we first chose Dispersion model and Tanks in series model. RTD experiments were carried out for the reactor. Reactions between sodium thiosulphate and hydrogen peroxide were carried out at different temperature and concentration. Results of the reactions were analyzed and then simulation was carried out based on it.