Products Description

How to choose the right type of crude distillation tower according to different chemical products?

According to different chemical products to choose the right type of distillation column, the first thing to consider is the physical properties of chemical products and operating conditions. Different chemical products due to its boiling point, solubility, viscosity and other physical properties of the different requirements of the crude distillation tower will be different. For example, for materials with low boiling point and gaseous state at atmospheric pressure, they should be distilled under pressure. In addition, the design of the crude distillation tower also needs to consider the separation effect of the material, including the arrangement of the tower plate, the height of the tower and other factors.

When selecting the type of distillation tower, it is also necessary to consider the reflux ratio in the distillation process, because the size of the reflux ratio not only affects the number of theoretical plates required, but also affects the consumption of heating steam and cooling water, as well as the choice of tower plate, tower diameter, distillation kettle and condenser structure size. Therefore, the appropriate choice of reflux ratio is crucial for improving distillation efficiency and reducing energy consumption.

In addition, the material selection of crude distillation tower is also an important consideration. Since chemical products often involve operation at high temperatures, high pressures, and corrosive environments, the tower materials need to be able to withstand these conditions. For example, the rare metal titanium and its alloy materials are widely used in the chemical industry because of their high strength, great toughness, high temperature resistance, corrosion resistance, and light specific gravity.

Depending on the specific application areas of chemical products, such as fine chemicals, daily chemicals, light chemicals, petroleum refining, agricultural and forestry chemicals, and other sectors, there will also be specific requirements for the selection of distillation columns. For example, primary distillation columns are suitable for processes such as predehydration and desulphurisation of crude oil in general, whereas flash distillation columns are not preferred in some cases due to their more responsible process and higher investment.

Selection of the appropriate type of crude distillation tower requires comprehensive consideration of a number of factors, such as the physical properties of the chemical product, operating conditions, desired separation effect, choice of materials, and specific requirements of the application area. The efficiency of the distillation process and the quality of the product can be ensured through precise calculations and rational design.