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轻油回收装置中,脱乙烷塔的作用不仅在于精馏分离,脱除液烃混合物中的甲乙烷组份,而且和制冷分离设备统一考虑和设计后,可以提高丙烷收率,简化工艺流程.因此,对于不同的工况,就形成了不同型式的脱乙烷塔. 脱乙烷塔的分馏作用决定了脱乙烷塔的设计,应从塔压与塔顶露点温度及塔底泡点温度的关系入手,选择合适的塔压,决定具体的设计参数,并根据工艺流程的组合情况,决定其具体的结构型式,
In the light oil recovery unit, the deethanizer not only functions in the rectification and separation to remove the methyl ethyl component in the liquid hydrocarbon mixture, but also improves the propane yield and simplifies the process after being uniformly considered and designed with the refrigeration separation equipment So different forms of deethanizer are formed for different working conditions.The fractionation of deethanizer determines the design of deethanizer from the pressure of tower to the dew point of tower top and the bubble point Temperature relationship, select the appropriate tower pressure, determine the specific design parameters, and according to the combination of process conditions, determine the specific structure type,