Dehumidifiers are widely used in the chemical industry, because many places in the chemical industry require dehumidifiers to control humidity. In the process of polyethylene production, the humidity of the ethylene raw material gas needs to be detected. Water will poison the platinum catalyst. Only by controlling the proper humidity of the gas CO2 can the production proceed smoothly; the production process of chlorides such as bleaching powder needs to be strictly controlled. The humidity value of the gas, otherwise it will generate waste acid with water; in the production process of compressed gas, the gas needs to be pre-dehumidified to prevent the condensation of supersaturated water vapor during the compression process; the gas should be fully dehumidified before liquefied gas. Water vapor condensation causes clogging of valves and components; during the production and storage of liquid SO2, if the moisture is not fully dehumidified, the reaction of SO2 with water can generate highly corrosive sulfurous acid and sulfuric acid; natural gas and liquefied petroleum gas During the transportation and storage, when the moisture content in the gas is too high, it freezes below 0 ℃, and forms coagulated hydrates above 0 ℃; in the polymerization process of nylon and polyester and the textile process of its fibers, humidity control If it is not good, it will reduce production efficiency and affect product quality. There is a special discussion on dehumidifying gas in the chemical engineering principle. It analyzes the characteristics of dehumidification process, dehumidification methods and applications in detail. Based on the theory of dehumidification statics, analyzes the state parameters of humid air, the moisture state of materials, free moisture and balance moisture, and combined moisture. It also discusses the calculation of dehumidification speed under constant dehumidification conditions, dehumidification curve and dehumidification rate curve, critical water content, and dehumidification time under constant dehumidification conditions.

The brand NAISIDA of Guangdong Aoyu Electric Appliance Co., Ltd. mainly develops and sells "household dehumidifiers, commercial dehumidifiers, industrial dehumidifiers, fresh air purifying dehumidifiers, cooling dehumidifiers, temperature regulating dehumidifiers," with constant temperature and humidity series products. Constant temperature and humidity machine, rotary dehumidifier, ultrasonic humidifier, wet film humidifier and non-standard product development".