Technology study on recovering HF in exhaust gas from uranium tetrafluoride process

This paper introduces the process test that employs NaF as adsorbent which fully reacts with hydrofluoric acid solution in reactor, which is called wet chemical adsorption, then it is heated to dry and decomposited in high temperature. The process has the characteristics of high feasibility, simplity as well as stable and reliable equipment operation. Under the optimum conditions, HF recovery is more than 85%, which solves the problem in HF recovery process, reduces fluoride waste from the original, and ensures environmental safety. (authors)