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Based on the finite-time thermodynamics, the sulphuric acid (H 2 SO 4 ) decomposition process (SADP) is investigated in this paper. The influences of the diameter and length of the reactor and the pressure and temperature of the reactant at the inlet on the production rate of SO 2 , entropy generation rate (EGR) and specific EGR (the EGR per unit production rate) are analysed. The values of some parameters to lower the specific EGR are obtained. It shows that there are optimal diameter and length of the reactor and the pressure of the reactant at the inlet to minimise the specific EGR. The optimal diameters of the reactor and optimal pressures of the reactant at the inlet for the minimum specific EGR and for the minimum EGR are the same while the optimal lengths of the reactor for the two optimisation objectives are different.

Effects of design parameters on entropy generation rate of sulphuric acid decomposition process