What is a tower?

The tower is a process equipment with a cylindrical welded structure, consisting of a cylinder, a head (or head) and a support. It is a non-standard equipment designed and manufactured specifically for certain production process requirements. Tower is used for distillation, purification, absorption, distillation and other chemical unit operation of vertical equipment, widely used in gas-liquid and liquid-liquid phase between the mass transfer, heat transfer. According to the classification of tower internals structure, the tower can be divided into plate tower and packed tower. If the container only contains materials and does not carry out chemical reactions and other physical and chemical processes, there are no facilities or only simple auxiliary structures, also known as tanks. Vessels are divided into vertical type (vertical axis) and horizontal type (horizontal axis). Most of the tower belongs to the pressure vessel.

Working principle of polypropylene and polyvinyl chloride tower
When the polypropylene and polyvinyl chloride towers are working, the gas enters from the tangential direction from the bottom of the tower, and rises spirally under the guiding effect of the tray blades. The liquid is distributed from the blind plate to each blade to form a thin film layer, and is sprayed by the airflow into flowing water droplets. The liquid droplets are thrown to the tower wall by centrifugal force while moving with the air flow, forming a liquid ring rotating along the wall, and flowing down to the annular liquid collection tank along the wall under the action of gravity, and then flowing to the blind plate of the next tower plate through the overflow device. The liquid flowing down plate by plate is sprayed into droplets by gas on the tower plate, so that there is a large contact area between gas and liquid. The liquid droplets rotate under the drive of the air flow, and the centrifugal force generated strengthens the contact between the gas and the liquid. When the liquid is sprayed in the gas on the swirl plate, the dust particles adhere to the gas, and then are thrown to the tower wall, carrying the dust particles downstream. As the tower provides good gas-liquid contact conditions, the acid gas in the gas can also be absorbed by the alkaline liquid; the swirl plate tower also has defogging performance to extend the service life of the fan.