A method for filtering gas by electrically charged insulating particles

Abstract

The invention discloses a method for filtering gas through electrified insulating particles, belongs to the technical field of air purifying methods, aims at solving the problem that in the prior art, high-voltage electrostatic precipitation is limited by specific resistance of removed substances and the problem about activated carbon adsorption capacity saturation, and provides the method for filtering gas through the electrified insulating particles. According to the method, the insulating particles are subjected to friction electrification by means of mechanical movement or vibration or the like, gas flows through gaps between the electrified insulating particles making contact with one another or gaps between the particles and a container, and static particle adsorption, filtering and dust removing are conducted. The method for gas filtering is suitable for being used in many fields of industrial dust removing, haze air purifying and the like.

Description

technical field [0001] The invention specifically relates to a method for filtering gas by charged insulating particles, and belongs to the technical field of air purification methods. Background technique [0002] Human beings live in hazy weather for a long time, which will increase the risk of various respiratory system and cardiovascular and cerebrovascular diseases, affect the quality of life, and shorten the life expectancy. Smog weather, especially the smog weather caused by the excessive concentration of particulate matter in northern cities in winter in my country, is extremely harmful to people's health. At present, my country's control of particulate matter emissions, in addition to strengthening legislation and standardizing production, still lacks action. It is an effective and economical method to remove fine particles. [0003] In the current flue gas tail gas dry and wet dust removal processes, the high-voltage electrostatic dust removal is more efficient, bu...

AI Technical Summary

Problems solved by technology

Smog weather, especially the smog weather caused by the excessive concentration of particulate matter in northern cities in winter in my country, is extremely harmful to people's health. At present, my country's control of particulate matter emissions, in addition to strengthening legislation and standardizing production, still lacks action. An effective and economical method for removing fine particles

[0003] In the current flue gas tail gas dry and wet dust removal processes, the high-voltage electrostatic dust removal is more efficient, but it is limited by the specific resistance of the dust particles, while the bag filter dust removal has high efficiency for larger particles and fine particles. Low cost and high operating cost. The improved electrified bag dust removal and water spray spraying methods are unsatisfactory in terms of effective dust removal and reduction of economic investment, and there are disadvantages such as high operating and input costs.

Lack of enthusiasm for enterprises in this regard

[0004] Activated carbon filtration and adsorption can effectively remove particulate matter, but there is a problem that the adsorption material is saturated and its adsorption performance is reduced, and it is difficult to popularize and use it in a large amount of dust removal due to cost issues.

Images