Experimental investigation of reaction behavior between carbon dioxide and liquid sodium

Miyahara, Shinya  ; Ishikawa, Hiroyasu ; Yoshizawa, Yoshio*

Reaction behavior of carbon dioxide (CO) with a liquid sodium pool was experimentally investigated to understand the consequences of boundary tube failure in a sodium-CO heat exchanger (HX). In this study, two kinds of experiments, namely fundamental experiment and demonstration experiment which simulate the incident of CO leakage in HX, were carried out to investigate the reaction behavior. From these experiments, it became clear that the exothermic reaction occurred above a threshold temperature, and useful and indispensable information such as the resulting temperature and pressure rise and the behavior of solid reaction products in the pool was obtained to evaluate the consequences of boundary tube failure incident in the sodium- CO heat exchanger.