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本文从相平衡的热力学关系出发,利用 P—R 状态方程,建立了轻烃混合物中 CO_2结晶的三相平衡模型,提出了低温下轻烃混合物中 CO_2溶解度的通用计算方法,可精确计算天然气深冷分离装置中 CO_2的冻结。还可用于计算轻烃混合物中重组分的固化。
Based on the phase equilibrium thermodynamic relationship, the P-R equation of state was used to establish a three-phase equilibrium model of CO 2 crystallization in light hydrocarbon mixtures. A general calculation method of CO 2 solubility in light hydrocarbon mixtures at low temperature was proposed, which can accurately calculate the natural gas depth CO_2 Freezing in Cold Separation Plant. It can also be used to calculate the cure of heavies in light hydrocarbon mixtures.