PURIFICATION OF HEAVY WATER

PURPOSE:To easily obtain purified heavy water useful for a power nuclear reactor, in improved processing capacity, by mixing a strongly acidic cation- exchange resin with a weakly basic anion-exchange resin at a specific mixing ratio and filling the mixture into a mixed-bed demineralization column f...

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Hauptverfasser:	MIYAMARU HITOSHI, MORITA SATOSHI, ODA KENJI, IBUKI YOSHIHIRO, KIKUCHI HIROSHI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS THEREOF INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS NUCLEAR ENGINEERING NUCLEAR PHYSICS NUCLEAR REACTORS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	PURPOSE:To easily obtain purified heavy water useful for a power nuclear reactor, in improved processing capacity, by mixing a strongly acidic cation- exchange resin with a weakly basic anion-exchange resin at a specific mixing ratio and filling the mixture into a mixed-bed demineralization column for heavy water purification. CONSTITUTION:A mixed resin (C) is prepared by mixing (A) a strongly acidic cation-exchange resin such as Diaion SKN-1 with (B) a weakly basic anion- exchange resin such as Diaion WA-21 at a ratio of 1:1-5. The resin (C) is filled in a mixed bed demineralization column for the purification of heavy water, heavy water is passed through the column to adsorb the ions of Li, CO3, NO3, etc., to the resins A and B and the purified heavy water is recovered from the column.