HIGH-TEMPERATURE HEAT CARRIER (VERSIONS) Russian patent published in 2009 - IPC G21C15/18 

FIELD: power engineering.

SUBSTANCE: invention refers to heat power engineering, and namely to compositions of materials for heat transfer under peak load conditions. High-temperature heat carrier meant for heat-stressed power plants with heat load of more than 1 MW/m² and operating temperature of more than 400°C based on eutectic mixture of inorganic salts, which includes lithium fluoride LiF, consists of sodium metaphosphate NaPO₃ and potassium molybdate K₂Mo₂O₇ or sodium tetraborate Na₂B₄O₇ at the following component ratio: the first composition, wt %: NaPO₃ 64-87, Na₂B₄O₇ 3-25, LiF 8-15, or the second composition, wt %: NaPO₃ 25-49, K₂Mo₂O₇ 48-72, LiF 3-10.

EFFECT: obtaining non-toxic, non-combustible heat carrier that can be available in molten condition without any change in chemical composition at low pressure of intrinsic vapours within wide temperature range of 400 to 1200°C, thus remaining inert relative to the main structural materials based on iron alloys.

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