ВЗАИМОДЕЙСТВИЕ МАТЕРИАЛОВ СЕПАРАТОРА ВОДОРОДА С НАТРИЕМ И ПРИМЕСЯМИ В НЕМ

Abstract

Work is devoted to a research of materials (zirconium and nickel) for hydrogen separation by its production with use of nuclear reactor in relation to the high-temperature fast sodium reactor (BN-VT) developed in IPPE, for production of hydrogen from hydrocarbon raw materials. These materials can be used in relation to the thermal reactor of the operating nuclear power plants or the reactor of new generation of VTGR, the electrolysis of water offered for receiving hydrogen in Research Center KI. Hydrogen on the NPP is formed also at reaction of water with structural materials, at water leak emergencies in sodium and steam - Zr reaction, at nuclear reactions, etc. In the real work results of LAES of the analysis of zirconium and nickel after their interaction with sodium and impurity in it are presented at 1053 K during 100 h in the sodium purified from oxygen to the level which is not exceeding 2 mg/kg and containing 6 mg/kg of hydrogen. Interaction of zirconium and nickel with sodium and impurity in it is revealed (hydrogen, oxygen, carbon). The maximum quantity of carbon, oxygen, nitrogen in zirconium is concentrated in a small layer of a sample by thickness near 10 microns. Hydrogen is concentrated probably near borders of grains, oxygen content in zirconium significantly exceeded oxygen content in initial zirconium that will be coordinated with results of thermodynamic calculations. It is shown that for increase in purity of hydrogen and durability of service of the device it is necessary to have zirconium as well as a nickel membrane in a gas phase.