Theoretical Calculation Analysis Of Solid-Phase Oxygen Control In Lead-Base Eutectic

Accelerator Driven Sub-critical system is one of the most concerned project in advanced nuclear technology.In this system,the spallation neutron target(such as lead or its eutectic alloy,etc.)struck by high-energy protons produces neutrons in spallation reaction.These neutrons maintain the fission in lead-cooling reactor as a source in order to increase the utilization of nuclear fuel,produce electricity energy and reduce nuclear waste.In the process of countries for ADS,it is significant to study oxygen control technology.Among all the research for oxygen control technology in the world,there are mainly two ways to control the oxygen concentration in lead-base eutectic: gas-phase oxygen control and solid-phase oxygen control.The principle of solid-phase oxygen control is that oxygen concentration in lead-base eutectic increases by lead-base eutectic flowing through lead oxide.Among all the research SCK·CEN is outstanding in study on pipe and oxygen control material.Lead-base eutectic experiment design and theoretical modeling are presented in this paper.In the experiment,design,building the loop for lead-base eutectic,experiment process and follow-up plan are made according to actual conditions.In the theoretical modeling,electrochemical dissolution of Pb O particles is calculated by Matlab in lead-base eutectic with increasing temperature and flow rate,and reliability analysis is done for result.The erosion wear caused by lead-base eutectic is researched by Fluent with changing flow rate,velocity and diameter of particles in Discrete Phase Model.Finally,the conclusion is written by results of depth analysis.