PROCESS FOR DISSOLVING SOLID MATERIALS, IN PARTICULAR SOLID NUCLEAR REACTOR FUELS, AND DISSOLUTION APPARATUS FOR IMPLEMENTING SAID PROCESS

摘要

PROCESS FOR DISSOLUTION OF SOLID MATERIALS, IN PARTICULAR SOLID FUELS OF A NUCLEAR REACTOR, AND DISSOLUTION APPARATUS INTENDED TO IMPLEMENT THIS PROCESS. /P P THE PROCESS INCLUDES THE DISSOLUTION OF SOLID MATERIALS IN A DISSOLIST CONSOLIDATION APPARATUS IN A RECTIFYING APPARATUS 2 WITH A COLUMN WITH PLATES 3 AND A BOTTOM OF COLUMN 4 AT THE LOWER END OF THE COLUMN WITH PLATES; THE MATERIALS TO BE DISSOLVED AND THE LIQUID SOLVENT ARE INTRODUCED INTO COLUMN WITH PLATES 3 TO CIRCULATE TO THE BOTTOM OF COLUMN 4 WHILE A GAS CIRCULATES THE SOLID MATERIALS AND LIQUID SOLVENT FROM THE BOTTOM OF COLUMN 4 IN COUNTERCURRENT FROM THE BOTTOM OF COLUMN 4 SHELF COLUMNS 3; THE LIQUID SOLVENT WITH THE DISSOLVED MATERIALS IS TAKEN FROM THE BOTTOM OF COLUMN 4 OF THE RECTIFICATION APPARATUS 2. /P P THIS PROCESS MAKES AN INCREASE IN THE DISSOLUTION RATE.