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Dust removal equipment refers to devices that separate dust particles from flue gas and recover them, also known as dust collectors. The dust intake of a dust collector is usually located at the workstations or areas where smoke and dust are generated. Through suction hoods and dust collection pipes, the flue gas containing dust particles is drawn into the entire dust removal system, where the dust particles are separated from the air, settled, and collected. I. Dust removal equipment can be classified according to its working principle as follows: 1. Dry mechanical dust collectors. Dust removal equipment designed to utilize the inertia and gravity of dust, such as sedimentation chambers, inertial dust collectors, cyclone dust collectors and other types of collectors for high-concentration dust, are primarily used for the separation or concentration of high-concentration dust with large particle sizes. 2. Wet dust collector. Dust removal devices that rely primarily on hydraulic wettability to separate and capture dust particles, such as spray towers and Venturi tubes, are widely used in situations where high-concentration, high-volume dusty gases are generated during production processes. The separation efficiency for coarser, hydrophilic dusts is higher than that of dry mechanical dust collectors. 3. Particle layer dust collector. A device that uses layers of particulate materials of different particle sizes as filter media to trap dust contained in the filtered air. It is mainly used at dust emission points in production processes such as construction materials and metallurgy, where it often filters dusty flue gases with high concentrations, large particles, and high temperatures. 4. Bag filter. This filter is a dust removal device that uses fiber textiles or filling layers as the filtering medium. It offers a wide range of options in terms of application, design, dust removal capacity, and efficiency. It is primarily used in places where fine dust needs to be captured, and is applied both in exhaust dust removal systems and in intake air systems. In recent years, thanks to the continuous development of new filter materials, the advancement of fiber filtration technology has accelerated as well. With the emergence of new products, its application areas are also expanding steadily. 5. Electrostatic precipitator, this type of precipitator. Dusty air currents are introduced into an electrostatic field; under the influence of the high-voltage electric field, the gas is ionized to produce electrons and positive ions. These particles move toward the positive and negative poles respectively. As the dust particles pass through the electric field, they acquire a charge and move at a certain speed toward the collection plate of the opposite polarity to their charge, where they settle down and thus separate from the air flow, being collected in the electrostatic precipitator. This type of dust collector has a high dust removal efficiency, low resistance, and is easy to maintain and manage. It is effective in capturing fine dust particles in a similar manner to bag filters. II. Standards related to industrial dust removal and dust removal equipment: GB12476.1 Electrical equipment for flammable dust environments – General standards; AQ1022 Bag filters for use in coal mines; DL/T 514-2004 Electrostatic precipitators; JB/T 10341-2002 Filter cartridge-type dust collectors; JB/T 20108-2007 Pulse-jet bag filters for pharmaceutical use; JB/T 6409-2008 Wet electrostatic precipitators for gas treatment; MT 159-1995 Dust collectors for mining use; JC/T 819-2007 CXBC series of bag filters for use in the cement industry; JC 837-1998 Chamber-type reverse-airflow bag filters for use in the building materials industry; JB/T 8532-2008 Pulse-jet bag filters; JB/T 9055-1999 Bag filters driven by mechanical vibration. III. Selection of dust collectors: When selecting a dust collector, the following factors must be taken into consideration: 1. The application scenario – Different types and models of dust removal equipment should be chosen depending on the working environment. 2. Handle the air volume: determine the required air volume based on the dust removal ducts and the wind speed within those ducts. 3. Inlet dust concentration/type: Select the appropriate dust removal filter element based on the different dust concentrations and types. 4. Ash discharge device: The dust collector should be equipped with a continuous air-locking ash discharge system; meanwhile, to address environmental emission issues, the ash discharge outlet should be fitted with dust collection equipment (dust collection buckets or bags)