天然气液化流程中的闪蒸计算

对天然气液化流程中关键的闪蒸问题进行了分析与计算。采用Gibbs自由焓的概念对混合物者了稳定性分析，以此作为闪蒸计算的前提。在等温闪蒸计算的基础上，引入最优化算法，求解等焓和等熵条件下的闪蒸问题，计算结果与实验数据相吻合。

Flash Calculation in Natural Gas Liquefaction Process

In this paper analysis and calculation are made on flash calculation which is very important in natural gas liquefaction process. The tangent plane criterion of Gibbs is adopted and stability of the original mixture is validate to serve as premise for flash calculation. Based on the algorithm of isothermal flash problem, the concept of optimization is introduced and a new algorithm to solve both isoenthalpy and isoentropy flash problems is proposed. Results of flash calculation compare well with the experimental data.