Numerical Study on the Performance of Oxygen Control Bypass of Lead-Bismuth Eutectic System

In order to explore the method for efficiently regulating the oxygen concentration of lead-bismuth eutectic (LBE) system by solid-phase oxygen control, this study calculates the oxygen concentration of LBE system by the self-programmed code in FORTRAN language based on the lumped parameter method, by correcting the empirical formula for liquid LBE corrosion and in combination with the PbO dissolution model, and then studies thereby the effects of the main loop flow rate, temperature in the mass exchanger (MX), and PbO inventory on the MX oxygen supply performance of the independently designed small LBE system, to establish the preliminary design criteria of MX thus to obtain the oxygen supply performance of MX and design parameters of oxygen supply bypass under certain constraints. This study can provide a reference for the design and calculation of the oxygen control bypass of LBE system, and also present an efficient approach to calculating the transient oxygen concentration and corrosion of the LBE system to give a new insight into establishing the oxygen concentration model prediction system.