Introduction

The rectification tower is a tower type gas-liquid contact device for rectification. Using the different volatility of each component in the mixture, that is, at the same temperature, the vapor pressure of each component is different, so that the light components (low boilers) in the liquid phase are transferred to the gas phase, while the light components in the gas phase are transferred to the gas phase. Heavy components (high boilers) are transferred to the liquid phase to achieve the purpose of separation. Distillation tower is also a kind of mass and heat transfer device that is extremely widely used in petrochemical production.

he equipment used in the rectification process is called a rectification tower, which can be roughly divided into two categories: ①The plate tower, the gas-liquid two phases are generally in countercurrent contact for many times, and the gas-liquid two phases on each layer are generally cross-flowed. ② In the packed tower, the two phases of gas and liquid are in continuous countercurrent contact.

The general rectification device is composed of rectification tower body, condenser, reflux tank, and reboiler. The feed material enters the tower from a certain section of the rectification tower, and this tray is called the feed plate. The feed plate divides the distillation tower into two upper and lower sections. The part above the feed plate is called the rectification section, and the part below the feed plate is called the stripping section

        The alcohol recovery tower is mainly used for the recovery of dilute alcohol in the pharmaceutical, food, light industry, chemical and other industries. The alcohol recovery tower is also suitable for the distillation recovery of methanol, acetone and other solvent products. It has the advantages of energy saving, environmental protection, reducing production costs and improving efficiency.