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Method and apparatus for regenerating cold traps within liquid-metal systems

Patent ·
OSTI ID:862473
Oxide and hydride impurities of a liquid metal such as sodium are removed from a cold trap by heating to a temperature at which the metal hydroxide is stable in a molten state. The partial pressure of hydrogen within the system is measured to determine if excess hydride or oxide is present. Excess hydride is removed by venting hydrogen gas while excess oxide can be converted to molten hydroxide through the addition of hydrogen. The resulting, molten hydroxide is drained from the trap which is then returned to service at cold trap temperatures within the liquid-metal system.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL
DOE Contract Number:
W-31109-ENG-38
Assignee:
United States of America as represented by United States Energy (Washington, DC)
Patent Number(s):
US 3941586
OSTI ID:
862473
Country of Publication:
United States
Language:
English

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Related Subjects

/75/210/376/423/976/
addition
apparatus
cold
cold trap
converted
determine
drained
excess
gas
heating
hydride
hydrogen
hydrogen gas
hydroxide
impurities
liquid
liquid metal
liquid-metal
measured
metal
metal hydroxide
metal systems
method
molten
oxide
partial
partial pressure
pressure
regenerating
removed
resulting
returned
service
sodium
stable
systems
temperature
temperatures
trap
traps
venting