Modeling and Analysis of CaBr2 Hydrolysis

S.A. Lottes, and R.W. Lyczkowski
Argonne National Laboratory

The main focus of this paper is the modeling, simulation, and analysis of the CaBr2 hydrolysis reactor stage in the Calcium-Bromine thermochemical water splitting cycle for nuclear hydrogen production.

One concept is to use a spray reactor of CaBr2 into steam. Given the large heat reservoir contained in a pool of liquid CaBr2 that allows bubbles to rise easily, using a bubble column for the hydrolysis reaction appears to be a feasible and promising alternative to the spray reactor concept.

Results for both droplet and bubble modeling with COMSOL are presented together with recommendations for the path forward.