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使用化学平衡模型和PR状态方程对含硫天然气的相态进行了建模。液相中的硫被模拟为由S1S8组成的混合物,每种硫与H2S反应生成8种不同的硫烷。因此,建议为所有的硫类构建PR状态方程参数,包括S8和H2S的源物质参数和只存在于源物质之间的交互作用参数。对固态硫使用一种单独的模型。对纯硫和含有H2S、CO2、CH4、N2的混合气体中硫的数据进行了比较。很好地预测了多组分气体在较大压力、温度范围内的气体平衡含硫量。
The phase behavior of sulfur-containing gas is modeled using the chemical equilibrium model and the PR state equation. Sulfur in the liquid phase is modeled as a mixture of S1S8, each of which reacts with H2S to produce 8 different sulfurs. Therefore, it is advisable to construct PR state-of-the-equation parameters for all sulfur species, including the source material parameters for S8 and H2S and the interaction parameters existing only for the source material. Use a separate model for solid sulfur. Sulfur data for pure sulfur and mixed gases containing H2S, CO2, CH4 and N2 were compared. The gas equilibrium sulfur content of multi-component gas over a wide range of pressures and temperatures is well predicted.