The tower structure design of the Propane - Propylene (PP) Splitter involves several key elements. The first is the design of the tower diameter. The tower diameter should be determined according to the processing volume. A sufficient tower diameter can ensure that the propane-propylene mixture has a suitable gas-liquid flow rate. If the processing volume is large, a smaller tower diameter will make the gas-liquid flow rate too fast, resulting in insufficient gas-liquid contact and affecting the separation effect. At the same time, in order to prevent liquid flooding and mist entrainment, the tower diameter needs to control the gas-liquid flow rate within a reasonable range. Liquid flooding will destroy the normal separation process, and mist entrainment will reduce the purity of the tower top product. The appropriate tower diameter can effectively avoid these problems.

Tower height is also an important design element. It is closely related to the number of theoretical plates. After calculating the number of theoretical plates according to the separation requirements of propane and propylene, the approximate range of the tower height is basically determined. In addition, the distance between tower plates affects the tower height. Reasonable tray spacing can not only provide sufficient space for gas-liquid separation and prevent droplet splashing, but also consider the convenience of maintenance. Too small spacing can easily cause incomplete gas-liquid separation.

The choice of tray type should not be underestimated. The mass transfer efficiency of different tray types varies greatly. For example, the floating valve tray has high mass transfer efficiency and can better adapt to different gas-liquid flow rates. The sieve tray has a simple structure and low cost. When selecting, it is necessary to comprehensively consider factors such as the characteristics, operating conditions and economy of the propane-propylene mixture to ensure that the selected tray type has high mass transfer efficiency and operational flexibility to cope with load changes in production.

The material selection of Propane-Propylene (PP) Splitter is related to the performance and life of the tower body. Since the propane-propylene mixture may contain impurities, the material must be corrosion-resistant, and stainless steel is a better choice. At the same time, the material must have sufficient mechanical strength to withstand loads such as pressure, temperature and its own weight in the tower to ensure safe and stable operation of the tower body.