C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
23/285
C01B 5/02 (2006.01) B01D 59/32 (2006.01)
Patent
CA 1107034
Abstract of the Disclosure: A process is, herein, disclosed for removing tritium from tritium-containing heavy water to recover tritium gas of high purity characterized by feeding a part of the heavy water containing tritium from a source for supplying the heavy water such as heavy water moderated power reactor to an exchange reaction column wherein the heavy water contacts with deuterium gas countercurrently, extracting heavy water enriched in tritium from the bottom of the exchange reaction column and converting it to vapor of heavy water, passing the vapor of heavy water through at least one packed column of two columns packed with easily oxidizable or reducible metals by steam or hydrogen respectively wherein the metal in the column is oxidized to metal oxide while the vapor of heavy water is reduced to deuterium gas, recycling most of the deuterium gas to the exchange reaction column to effect countercurrent contact between heavy water and deuterium gas, extracting the deuterium gas of reduced tri- tium content from the top of the exchange reaction column, passing said deuterium gas through the other column in which the metal packed has already been oxidized to metal oxide wherein the metal oxide is reduced to metal while the deuterium gas is oxidized to heavy water and recycling a part of the heavy water of reduced tritium content to the heavy water supplying source while recycling the residual heavy water to the top of the exchange reaction column, introducing a part of the gas obtained after passing the vapor of heavy water through the heated metal layer to the thermal diffusion column cascade and concentrating the tritium to recover the tritium as tritium gas of high purity. - 1 -
299881
Matsuda Yuji
Naruse Yuji
Shimizu Masami
George H. Riches And Associates
Japan Atomic Energy Research Institute
Toyo Engineering Corporation
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