DETERMINATION OF KINETIC PARAMETERS FOR ETHANE PYROLYSIS CONSIDERING CONVERSION AND TEMPERATURE PROFILES FOR FLOW REACTOR IN LAMINAR

Abstract

A more rigorous method is proposed for determining experimentally the kinetic parameters, i.e. rate constant and order of reaction for pyrolysis of hydrocarbons from low conversion data obtained in a wide range of initial concentrations using a flow reactor. It was experimentally confirmed that the reactor used satisfied the boundary condition of constant wall temperature. The mass and heat transfer equations describing radial and axial profiles for the flow reactor in laminar are solved numerically using an apparent first-order rate equation, and this technique can be easily applied to the determination of kinetic equations for pyrolysis of hydrocarbons. For example, the pyrolysis of ethane was carried out at different initial concentrations, and using the data obtained here the rate equation for pyrolysis of ethane was determined by the method proposed in this paper.