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建立了一个描述ITER液态锂铅回路鼓泡提取器的复杂的流体动力学数学模型;将提取效率作为过程参数进行分析与计算,提出了鼓泡柱提取系统的初步设计参数。此外,以氘在液态锂铅合金中解吸动力学理论为基础,对在不同的温度、氘分压、氦流量操作条件下,氘从液态锂铅中释放的行为展开计算。结果表明:在一定的温度范围内,氘从液态锂铅到气相的整个释放过程,是氘原子在合金中的扩散与在气-液界面发生多相反应重组的结果。
A complex fluid dynamics mathematical model describing the ITER liquid lithium lead loop bubble extractor was established. The extraction efficiency was analyzed and calculated as a process parameter, and the preliminary design parameters of bubble column extraction system were proposed. In addition, based on the desorption kinetics of deuterium in liquid lithium-lead alloy, the behavior of deuterium release from liquid lithium-lead was calculated under different operating conditions of temperature, deuterium partial pressure and helium flow rate. The results show that the diffusion of deuterium from the liquid lithium lead to the gas phase in a certain temperature range is the result of the deuterium diffusion in the alloy and the heterogeneous reaction recombination at the gas-liquid interface.