Dryer outlet pressure

The outlet of the chlorine drying tower should be at positive pressure, as an inert gas is usually introduced into the drying tower to maintain a certain pressure, and the chlorine needs to be discharged from the outlet. If it is negative pressure, it may cause gas to flow in the opposite direction or lead to the inhalation of air pollutants, thereby affecting production efficiency and product quality. .

Dried with sulfuric acid, no inert gas was introduced

Whether the outlet pressure of the chlorine drying tower is positive or negative depends mainly on the design of the process; the processes used by Asahi Kasei and Beihua Machinery are of the positive-pressure type； The process of chlorine production is a negative-pressure process, with negative pressure created by a chlorine compressor.

Is there a risk of corrosion to the subsequent pipelines and chlorine compressors due to negative pressure? Thank you

The outlet of the chlorine drying tower is usually under negative pressure, meaning that the gas pressure is lower than atmospheric pressure. This is because the design of the chlorine drying tower is aimed at removing moisture in a harmless manner; when moisture mixes with chlorine, acidic gases are formed, which can affect the stability and safety of the entire gas transmission pipeline. However, if the chlorine drying tower is under positive pressure, this will affect the safety of the production process. There are several consequences: positive pressure can impair the sealing performance of the chlorine drying tower, resulting in a reduced drying effect and thus posing a danger ； The occurrence of chemical reactions requires a certain reaction pressure; positive pressure can affect the stability of chemical reactors and increase the difficulties associated with their operation ； Positive pressure increases the operating costs of related devices, such as gas delivery and pressurization equipment, while also extending their service life. During the operation of the chlorine drying tower, measures are generally required to maintain a negative pressure at the outlet, thereby enhancing the safety of the production process.

There is no impact, as long as the system has no flaws