仿真闪蒸过程初始相平衡常数估算策略  

Estimation Strategy of Initial Phase Equilibrium Constant in Simulated Flash Evaporation Process

作　　者：章佳明 王吉 应正波 崔伟灿 ZHANG Jiaming;WANG Ji;YING Zhengbo;CUI Weican(Zhejiang SUPCON Technology Co.,Ltd.,Hangzhou 310053,China)

机构地区：[1]浙江中控技术股份有限公司,浙江杭州310053

出　　处：《电工技术》2021年第20期161-162,165,共3页Electric Engineering

摘　　要：闪蒸计算过程需要大量的迭代计算,其中迭代初始气液平衡常数的计算成为闪蒸计算过程非常重要的组成部分。一种比较通用的估算方法是用理想情况下的气液平衡常数作为初始点,虽然该方法可以解决一小部分闪蒸问题,但在某些条件下会无法收敛,不适用于动态仿真中,因为动态仿真每一轮有大量不同条件的闪蒸计算,算错一个闪蒸很可能造成结果的波动。为此提出一种比较合理的估算方法,既可以解决收敛性问题又可以用于闪蒸过程中的多解问题。The flash calculation process requires a lot of iterative calculations,among which the calculation of the iterative initial gas-liquid equilibrium constant becomes a very important part of the flash calculation process.A more general estimation method is to use the ideal gas-liquid equilibrium constant as the initial point.Although this method can solve a small part of the flash problem,it will not converge under certain conditions and is not suitable for dynamic simulation.Because each round of dynamic simulation has a large number of flash calculations with different conditions,a wrong calculation of a flash is likely to cause fluctuations in the results.Therefore,a more reasonable estimation method is proposed,which can not only solve the convergence problem but also be used for the multi-solution problem in the flash evaporation process.

关 键 词：闪蒸计算 气液平衡常数 动态仿真 多解 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]