PROPOSED HELIUM PURIFICATION SYSTEM FOR THE EXPERIMENTAL GAS-COOLED REACTOR (EGCR)

Liquid and dry processes suituble for the purification of gases by the removal of CO/sub 2/, H/sub 2/O, CO, H/sub 2/, and hydrocarbons are discussed. Recommendations are given for specific processes io be included in a "dry" (no liquid absorbents or chemicals used) purification system for the hellum coolant of the EGCR The recommended processes include (1) a catalytic converter for the oxidation of CO, H/sub 2/, and hydrocarbons to CO/sub 2/ and H/sub 2/O, (2) cooler-condensors for the removal of the bulk of the R/sub 2/O, (3) silica gel adsorbers to complete the removal of H/sub 2/O, and (4) Linde Molecular Sieve adsorbers for the removal of CO/sub 2/. No provisions are included for the planned removal of radioactive gases or particulates. (auth