Waste gas purification tower is the equipment to realize absorption operation. It can be divided into three types according to the contact form of gas-liquid phase. The first is the plate column, bubble absorber and stirred bubble absorber in which the gas is dispersed in the liquid phase in the form of bubbles; The second type is the ejector, venturi tube and spray tower dispersed by liquid in the gas phase. The third type is the packed absorber and falling film absorber in which the liquid contacts the gas phase in film motion. As a domestic professional waste gas purification tower supplier with three-level qualification for environmental protection construction, Wuxi Reid environmental protection equipment Co., Ltd. has developed a biological purification tower based on the practice summary, which adopts the biological purification principle and layer by layer filtration, adsorption and purification. It is another unique equipment in the waste gas purification tower.
The gas-liquid two-phase flow mode in the tower can be countercurrent or cocurrent. Generally, countercurrent operation is adopted. The absorbent is added at the top of the tower and flows from top to bottom. It contacts with the gas flowing from bottom to top. The liquid absorbing the absorbent is discharged from the bottom of the tower, and the purified gas is discharged from the top of the tower.
The waste gas purification tower shall meet the following basic requirements:
◇ the gas and liquid in the tower shall have sufficient contact area and contact time.
◇ both gas and liquid have strong disturbance, which reduces mass transfer resistance and improves absorption efficiency.
◇ wide operating range and stable operation.
◇ small equipment resistance and low energy consumption.
◇ have sufficient mechanical strength and corrosion resistance.
◇ simple structure, easy to manufacture and overhaul.
