清洗级联分离同位素的过程中沉积物物质分布的计算方法

Calculation Method of Sediment Material Distribution During Isotope Separation by Cleaning Cascade

在级联分离同位素的过程中,某些分离工质会在级联内发生化学反应,持续产生少量的固体物质沉积在分离设备内。随着沉积物的增加,将逐步影响分离设备的分离性能,进而影响级联的生产运行,因此需要定期对沉积物进行清理。本文针对清理过程,提出一种数值计算方法,用于级联内不同气态物质分布规律的计算。该算法在单机清理参数已知的前提下,以级联级间物质守恒为基础,采用线性迭代算法描述级联内各类气态物质的分布情况,通过总的物质守恒达到计算收敛。算例的数值计算结果表明,本算法在不同级联工况下均能稳定收敛。

In the process of isotope separation in cascade,some separation working fluids will have chemical reactions in the cascade,and a small amount of solid materials will be continuously produced and deposited in the separation equipment.With the increase of sediment,the separation performance of separation equipment will be gradually affected,and then the production and operation of cascade will be affected.Therefore,the sediment needs to be cleaned regularly.In this paper,a numerical method is proposed to calculate the distribution of different gaseous substances in the cascade.On the premise that the cleaning parameters of a single machine are known,the linear iterative algorithm is used to describe the distribution of various gaseous substances in the cascade based on the mass conservation between cascade stages,and the calculation convergence is achieved through the total mass conservation.The results of the numerical example show that the algorithm can converge stably under different cascade regimes.