Kinetics Of Catalytic Hydrogenation Of Carbon Tetraolefins

As a means of utilizing C4 resources,catalytic hydrogenation of C4 olefins can improve the comprehensive utilization value of C4 resources,and also help to reduce dependence on traditional fossil fuels and promote the sustainable development of energy industry.Although many studies have focused on the effects of catalyst properties and structures on reaction activity and selectivity,there are still relatively few studies on reaction kinetics.A deeper study on the mechanism and kinetic behavior of C4 olefin catalytic hydrogenation can help us optimize the reaction process,improve the reaction efficiency and product quality,and reduce the production cost.The fixed bed continuous flow tubular reactor and YN-1 catalyst were used in the experiment.By studying the diffusion effect,the appropriate particle size and quality of the catalyst and the reaction parameters were selected.The response of conversion and selectivity of C4 olefin catalytic hydrogenation to different reaction conditions was studied by single factor variable method.It is found that the catalytic hydrogenation of C4 olefins can maintain the activity of the catalyst at a high temperature,and the conversion rate of C4 olefins can be increased by increasing the temperature,pressure and hydrogen-olefin ratio.Power function model,Langmuir-Hinshelwood mechanism model and catalyst deactivation model were used to fit the kinetic data of catalytic hydrogenation of C4 olefins.In order to determine the best dynamic model,MATLAB software is used to solve the function model,and the simulation accuracy and statistical test results are evaluated.The optimal kinetic model of isobutylene catalytic hydrogenation was obtained by using all the experimental data,and the average relative error of the results was 11.72%.The optimal kinetic model of catalytic hydrogenation of n-butene is a power function model including the reaction of isomerization of n-butene to cis-trans butene and hydrogenation of three kinds of butene,and the average relative error of the results is 13.79%.