Technical level and characteristics of dust removal equipment industry

The technical level and characteristics of this industry are mainly in the following aspects:
(1) Bio-nanofilm dust suppression was included in the "Compilation of Advanced Technologies for Air Pollution Prevention and Control" issued by the Ministry of Science and Technology and the Ministry of Environmental Protection
Bio-nano-film dust suppression technology, bio-nano-film is a double-ionized layer membrane with a distance between layers of nanometers, which can maximize the ductility of water molecules and has strong charge adsorption; Attract and agglomerate small particles of dust, make them aggregate into large particles of dust, and settle due to increased self-weight.
(2) Cloud and fog dust suppression was included in the "Compilation of Advanced Technologies for Air Pollution Prevention and Control" issued by the Ministry of Science and Technology and the Ministry of Environmental Protection
Cloud and fog dust suppression technology is through high-pressure ion atomization and ultrasonic atomization, which can produce ultra-fine dry fog of 1μm~100μm; the ultrafine dry fog particles are fine and dense, which fully increases the contact area with dust particles, and the water mist particles collide with dust particles and Coagulate to form agglomerates, and the agglomerates continue to grow larger and heavier until they settle naturally to achieve the purpose of eliminating dust.
(3) Wet dust collection was included in the "Compilation of Advanced Technologies for Air Pollution Prevention and Control" issued by the Ministry of Science and Technology and the Ministry of Environmental Protection
Wet dust collection technology absorbs dust-attached air through pressure drop, and removes dust under the dual effects of centrifugal force and water-dust gas mixing; unique impeller and other key designs can provide higher dust removal efficiency.
(4) The electrostatic precipitator technology is already in the mature application stage, but the emission concentration is difficult to meet the requirements of the new control standards
my country's electrostatic dust removal technology has matured, and its main technical level has entered the international advanced ranks.
The application of electrostatic precipitator technology in high temperature flue gas dust removal treatment application fields such as thermal power plants is relatively mature. Due to the limitation of the dust removal mechanism, the dust removal efficiency of the electrostatic dust removal technology has been difficult to be greatly improved. The new electrostatic dust removal system can generally control the emission concentration at about 100mg/m3. At the same time, the dust removal efficiency is greatly affected by the change of the specific resistance of the smoke and dust. In actual operation, the uncertainty of the fuel used causes the smoke parameters of the working condition to deviate from the design value, resulting in the smoke and dust emission concentration being often much higher than the design emission control value. With the continuous improvement of the country's requirements for flue gas pollution control and the increasingly stringent requirements for the emission of fine dust, electrostatic precipitator technology is facing severe challenges.
(5) Bag type dust removal technology is in a stage of rapid development
Compared with electrostatic precipitator technology, bag filter technology started late. Through the introduction of foreign technology and digestion and absorption, my country's bag type dust removal technology has made great progress. Various bag type dust collector technologies are becoming more and more advanced, perfect and complete. Filter material technology, dust cleaning technology, accessories, etc. have gradually formed an industrial scale. The performance of some bag-type dust removal equipment has reached the international advanced level. The dust emission concentration of the dusty waste gas filtered by the bag filter can reach 5mg/m3, and the investment, operation and maintenance costs are gradually reduced, and the life of the filter bag is continuously extended. As my country's requirements for flue gas pollution control continue to increase, bag dust removal technology has been more and more widely used and is in a stage of rapid development.
(6) Electric bag and electric bag composite technology is on the rise
With the continuous improvement of the country's requirements for industrial smoke pollution control, electrostatic precipitator technology is facing severe challenges. Some enterprises that originally used electrostatic precipitator equipment had to transform electrostatic precipitator equipment into bag-type dust collector equipment because they could not meet the emission requirements. This method is referred to as "electric bag replacement"; at the same time, considering that most of the existing high-temperature industrial flue gas dust removal in my country uses electrostatic dust removal equipment, and the existing initial investment is relatively large, some domestic dust removal equipment host manufacturers adopt "electric bag composite "Type dust removal" technology transforms the rear end of the original electrostatic dust removal equipment into a bag type dust collector, and changes the electrostatic dust removal into "electric bag composite dust removal".