HRT MOCKUP IODINE REMOVAL AND RECOMBINER TESTS

Technical Report · Mon Jan 13 04:00:00 EST 1958

DOI:https://doi.org/10.2172/4236680· OSTI ID:4236680

Harley, P H

Tests have been run in the HRT core system mockup which demonstrate that iodine can be successfully removed from dry steam by a silver bed. Such a bed is recommended to prevent iodine poisoning of the HRT recombiner catalyst. An added advantage will be removal of I/sup 135/ from circulation, whereby reducing neutron losses a Xe/sup 135/, a daughter. Four experiments were made with the silvered Alundum pellets during which experimental mass transfer coefficients were determined. At 110 deg C the experimental kg was 25% of the theoretical value, and at 150 deg C the kg was 52% of the theoretical. The experimental efficiencies were 68% and 97.8% of the theoretical efficiencies at the above temperatures. Increasing the gas temperature greatly improved the correlation of the theoretical and experimental data. Two iodine removal tests were made using silver-plated stainless steel wire mesh. These two tests gave higher removal efficiencies than the corresponding tests with the silvered Alundum rings. The metal support is preferred also because of its greater mechandical andd chemical stability. In particular, leaching of Ns/sub 2/O from Alundum rings was noted in the HRT. In a test of the stability of the silver-plated wire mesh, only 0.0025% of the silver was lost in a 650 hour run. During mockup tests without a silver bed, iodine poisoning lowered the recombiner efficiency from 99.97% to combiner temperature to 650 deg C was found to be effective in removing iodine poison from the platinum catalyst. (auth)

• Research Organization: Oak Ridge National Lab., Tenn.
• DOE Contract Number: W-7405-ENG-26
• NSA Number: NSA-13-018728
• OSTI ID: 4236680
• Report Number(s): CF-58-1-138
• Country of Publication: United States
• Language: English

Related Subjects

ALUMINUM OXIDES
ALUNDUM
CATALYSIS
CHEMICAL REACTIONS
DECOMPOSITION
EFFICIENCY
GASES
HOMOGENEOUS REACTORS
HRT
IODINE
IODINE 135
LEACHING
MECHANICAL PROPERTIES
MOCKUP
PELLETS
PERFORMANCE
PLATING
PLATINUM
POISONING
REACTORS
RECOMBINER
SEPARATION PROCESSES
SILVER
SODIUM OXIDES
STABILITY
STAINLESS STEELS
STEAM
TEMPERATURE
TESTING
WATER COOLANT
WIRES
XENON 135