Views: 22 Author: China Xicheng Publish Time: 2021-07-03 Origin: China Xicheng
Detailed analysis of the function of exhaust gas treatment wet scrubbe.The wet scrubber can treat a variety of single-component waste gas or mixed waste gas. The waste gas treatment effect is good, the purification rate is high, the dust removal and cooling effect is good, and the application range is wide. It has become the first choice for environmental assessment.
Ventilation pipes send waste gas into the scrubber tower, from the bottom of the tower upwards through the packing layer, and the absorption liquid is evenly sprayed from the upper part of the tower to wet the packing layer. In the tower, the pollutants in the exhaust gas and the absorption liquid are fully mixed and reacted, and finally removed from the exhaust gas. The purified gas passes through the defogging layer to remove water vapor and is discharged up to the standard.
It is composed of tower body, spray layer, packing layer, defogging layer, circulating water tank, circulating water pump and other parts.
The most commonly used is a cylindrical vertical wet scrubber. If the site is limited or indoor use, you can choose a square horizontal wet scrubber. The tower body is equipped with a certain number of transparent inspection holes, which can directly see the working conditions in the tower and regular maintenance.
Set above each layer of packing, the spray pipes are generally arranged in the form of tic-tac-toe, field-shaped, and rice-shaped, and a sufficient number of spiral nozzles are evenly set on the top. The nozzle has a large spray angle, uniform spray, and is not easy to be blocked. In the design, the spray area should be calculated according to the distance between the nozzle and the upper part of the packing layer and the spray angle, the actual spray coverage map should be drawn, and the number of nozzles should be reasonably increased at the edge to eliminate the spray dead angle.
It is filled with Raschig rings, hollow balls, Pall rings, Taylor wreaths, etc., with a large specific surface area. After being wetted by the nozzles with dense spray layers, the absorbent will evenly adhere to the surface of the filler ball to form an absorbent film to make absorption The surface area of the liquid in contact with exhaust gas is greatly increased. When the exhaust gas passes through the packing layer, it repeatedly, fully and long-term contact with the absorption liquid, and is absorbed by the reaction.
It can intercept the water vapor brought out in the waste gas treatment process, make it form droplets to adhere to the surface of the mist eliminator, and finally flow into the water tank at the bottom of the tower along the inner wall of the spray tower.
It is set on the bottom side of the spray tower, connected with the tower body, and is equipped with a floating ball valve, which can automatically replenish water. The circulating absorption liquid in the wet scrubber is generally clean water, or alkaline solution such as sodium hydroxide, acidic solution such as dilute sulfuric acid, and other special solutions can also be prepared. It can very well purify most industrial waste gas such as hydrogen chloride, ammonia, sulfide, nitrogen oxide, organic waste gas, sulfur-containing flue gas and so on. The wet scrubber can be equipped with automatic dosing devices, liquid level gauges, flow meters, PH meters, etc. to meet customer automation requirements.
Generally, it is an anticorrosive water pump, which is installed on the circulating water tank, and multiple water pumps can be installed. The pump type selection is reasonable and the quality is good, so that a sufficient amount of absorption liquid can be pumped into the tower, so that the exhaust gas can be fully neutralized and absorbed in the scrubber to ensure the exhaust gas treatment efficiency of the scrubber.
The wet scrubber has a good dust removal and cooling effect. The solid particles such as dust and flue gas will be wetted by the circulating water in the tower, which will humidify and increase the weight of pollutants, and are more likely to be blocked and intercepted by the packing layer. The circulating water is repeatedly sprayed After being showered, it is flushed into the circulating water tank, and finally settles at the bottom of the water tank. Irrational design of the spray tower can easily block the packing and reduce the efficiency of waste gas treatment, so that the waste gas cannot be discharged up to the standard.
When purchasing a wet scrubber, you should not only refer to the exhaust air volume to select the type, but also choose the scrubber specifications based on the actual working conditions of the project itself, such as the type, concentration, temperature, and dust content of the exhaust gas. Only in this way can the spray tower be selected reasonably, cost reduced, and work efficiently, so that the exhaust gas can be discharged up to the standard. Xicheng Environmental Protection is used by professional technicians to provide you with all-round product design and production services, and on-site inspection of exhaust gas purification solutions.
The PP wet scrubber has high exhaust gas purification rate, good dust removal and cooling effect, corrosion resistance, can be customized on demand, and the installation and operation and maintenance costs are low. PP wet scrubber has high strength, anti-aging, long life and reasonable price. It is light in weight, occupies a small area, and can be installed indoors, outdoors and on the roof. These advantages of PP scrubber make it more and more popular in environmental protection.