Equipment principle : After the gas outside the tower body enters the tower body, the gas enters the packing layer. There is spray liquid from the top and spray liquid in front of the packing layer, and a layer of liquid film is formed on the packing. When the gas flows through the packing gap, it contacts with the liquid film of the packing for absorption or neutralization reaction. The gas after absorption or neutralization is collected by the demister and discharged out of the tower through the outlet. The liquid on the liquid film flows into the liquid storage tank under the action of gravity and is pumped out by the circulating pump for circulation. For the treatment of corrosive gases (such as acid and alkaline waste gas), liquid absorption method is often used at present. The key to control the waste gas by liquid absorption is the selection of purification equipment.
Equipment characteristics At present, our company has independently developed acid and alkaline waste gas purification processes and equipment with high purification efficiency, simple operation and management, and long service life. The process and products have the characteristics of simple structure, low energy consumption, high purification efficiency and wide application range, and can effectively remove water-soluble gases. The acid mist waste gas is introduced into the purification tower through the air duct. After passing through the packing layer, the waste gas and sodium hydroxide absorption liquid are fully contacted by gas-liquid two phase absorption and neutralization reaction. After purification, the acid mist waste gas is dewatered and defogged by the demister, and then discharged into the atmosphere by the fan. The absorption liquid is sprayed down from the tower top after being pressurized by the water pump at the tower bottom, and then returns to the tower bottom for recycling after * * *. The purified acid fog exhaust gas meets the emission requirements of the national emission standard, and is lower than the national emission standard.
structural style : The equipment is divided into single tower and double tower. It is made of circular tower body and flange section connection. It is composed of liquid storage tank, tower body, air inlet section, spray layer, packing layer, cyclone demisting layer, air outlet cone cap, observation hole, etc. The control system composed of gas analyzer, PH controller, differential pressure transmitter, pressure sensor, flow sensor, conductivity meter, liquid level controller, solenoid valve, frequency converter and control cabinet can be equipped. The automatic control device can monitor the working state of the product 24 hours a day to realize automatic management.
Application occasions : This process and equipment can be widely used in the purification treatment of acid and alkaline waste gas discharged in chemical, electronic, metallurgical, electroplating, textile (chemical fiber), food, machinery manufacturing and other industries. Such as seasoning food, acid making, pickling, electroplating, electrolysis, storage battery, etc.
