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Physical Chemistry and Technology of Alkaline Liquid-Metal Coolant: A Retrospective-Perspective Look
Atomic Energy ( IF 0.5 ) Pub Date : 2020-09-26 , DOI: 10.1007/s10512-020-00678-4
V. V. Alekseev , Yu. A. Kuzina , A. P. Sorokin

The results of studies on the physical chemistry, mass transfer, and technology of alkali liquid-metal coolant are reported. The state of the coolant is determined by the interaction coolant-impurities-structural materials- protective gas. The impurity sources and their intensity were determined: sodium and sodium-potassium alloy – oxygen, hydrogen (tritium), carbon, products of corrosion of structural materials, nitrogen, and the protective gas, lithium- nitrogen. The following data were obtained on the impurities in the coolant: form, equilibrium concentration, solubility, reaction kinetics, and mechanisms of heterogeneous and homogeneous mass transfer. It was shown that the required concentration of the impurities in sodium and the sodium-potassium alloy guaranteeing the design-basis parameters and a low rate of corrosion of the structural materials is achieved on purification by means of cold traps. Deeper purification of coolants in high temperature NPF intended for use in space is achieved by means of getters (hot traps). The behavior of tritium and hydrogen in the sodium loops in NPP with fast reactors was studied. A new combined system is proposed for purification from impurities in high-temperature NPF for hydrogen production at sodium temperature ~900°C.



中文翻译:

碱性液态金属冷却剂的物理化学和技术:回顾性研究

报道了对碱液金属冷却剂的物理化学,传质和技术的研究结果。冷却剂的状态取决于冷却剂-杂质-结构材料-保护气体的相互作用。确定了杂质来源及其强度:钠和钠钾合金-氧气,氢气(tri),碳,结构材料的腐蚀产物,氮气和保护性气体锂氮。获得了有关冷却剂中杂质的以下数据:形式,平衡浓度,溶解度,反应动力学以及异质和均质传质的机理。结果表明,通过冷阱纯化后,可以确保钠和钠钾合金中所需的杂质浓度,以确保设计基准参数并降低结构材料的腐蚀速率。通过吸气器(热阱)可实现在太空中使用的高温NPF中对冷却剂的更深层净化。研究了具有快速反应器的核电厂中钠回路中of和氢的行为。提出了一种新的组合系统,用于从高温NPF中的杂质中纯化出来,以在钠温度约900°C下制氢。研究了具有快速反应器的核电厂中钠回路中of和氢的行为。提出了一种新的组合系统,用于从高温NPF中的杂质中纯化出来,以在钠温度约900°C下制氢。研究了具有快速反应器的核电厂中钠回路中of和氢的行为。提出了一种新的组合系统,用于从高温NPF中的杂质中纯化出来,以在钠温度约900°C下制氢。

更新日期:2020-09-26
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