Cold trap for eliminating impurities from a polluted liquid metal
AssigneeCommissariat a l'Energie Atomique
InventorChristian Latge
Life of this patent
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Abstract
Cold trap for eliminating the impurities present in a polluted liquid metal. It comprises a body provided with an intake pipe for the polluted liquid metal and an internal structure defining a passage for the metal, said structure being successively provided with means for cooling the liquid so that it can be cooled to a cold point temperature below the impurity saturation temperature and bring about a crystallization of the impurities, means for retaining the impurities and a discharge pipe for discharging from the body the impurity-free metal and means for reinjecting upstream of the cooling means part of the fluid which has passed through the impurity retention means. Application to liquid metal-cooled nuclear reactors.
Claims9
A cold trap for eliminating the impurities present in a polluted liquid metal, comprising a body equipped with an admission pipe for the polluted liquid metal and an internal structure defining a path for the metal, said internal structure being successively provided in the direction of flow therethrough with means positioned in said body for cooling the liquid metal so that it can be cooled to a cold point temperature below the impurity saturation temperature for bringing about a crystallization of the impurities, means mounted in said body for receiving liquid metal from said cooling means and for retaining impurities, and a discharge pipe connected to said body to receive liquid metal from said means for retaining impurities for discharging the impurity-free metal from the body, and means located in said body upstream of the cooling means in the direction of liquid metal flow through said body for recycling part of the fluid which has passed through the impurity retention means back through said cooling means and said means for retaining impurities.
Dependencies are inferred from the claim text.