Everyone knows that the equipment that separates dust from flue gas in coal-fired boilers is called dust removal equipment. Boiler is a commonly used supporting equipment in boiler and industrial production. Its function is to add particulate smoke and dust from boiler fuel and combustion emissions, thereby significantly reducing the amount of smoke and dust emitted into the atmosphere. This is an important environmental protection equipment for environmental pollution and improving air quality. So what are the major categories of coal-fired boiler dust collectors? What is the principle? Next, the editor from Huiyang Environmental Protection Company will introduce to you:

The maintenance and upkeep of coal-fired boilers cannot be separated from dust collectors. Currently, there are four types of dust collectors for coal-fired boilers: mechanical dust collectors, filter dust collectors, wet dust collectors, and electrostatic dust collectors.

1、 Mechanical dust collectorA mechanical dust collector is a device that uses mass forces such as gravity, inertia, and centrifugal force to separate dust particles from airflow. Such as gravity dust collectors, inertial dust collectors, and cyclone dust collectors. The characteristics of mechanical dust collectors are simple structure, low cost, and easy maintenance, but the dust removal efficiency is relatively low. Gravity dust collectors and inertial dust collectors have low dust removal efficiency and cannot meet current environmental requirements, so they are gradually being phased out. Although the dust removal efficiency of the cyclone dust collector is relatively high compared to the first two, it is not suitable for coal powder furnaces due to the high flue gas resistance and difficulty in separating dust particles with a particle size less than 5tim, while chain furnaces are more commonly used.

2、 Filter type dust collectorA filter dust collector is a device that separates and captures dust by passing a dusty airflow through a filter material. Such as particle layer dust collectors, bag filters, etc. Filter type dust collectors have the advantages of dust removal (high dust removal efficiency even at low dust concentrations), simple operation, and high energy consumption. However, they have high resistance and are not suitable for handling humid gases and viscous dust. Due to the high investment, resistance, and operating costs of filter dust collectors, they are currently less commonly used in boilers.

3、 Wet dust collectorWet dust collector is a device that captures dust particles by using a dusty airflow to come into contact with water or other liquids. Such as Venturi dust collector, cyclone water film dust collector, etc. The washing type dust collector has high efficiency, simple structure, low cost, and also has the function of absorbing gas, but it will produce sewage and sludge, which need to be treated. This wet dust collector has a simple structure, low metal consumption, and occupies less land, so the dust removal efficiency can reach over 90%. Therefore, it is widely used in small and medium-sized boilers. The disadvantage of wet dust collectors is that they consume a large amount of water, and acid containing wastewater needs to be treated to meet emission standards. The presence of water in the flue gas can cause dust accumulation in the flue and induced draft fan impeller, leading to corrosion and uneven quality of the induced draft fan impeller, resulting in vibration.

4、 Electrostatic precipitatorAn electrostatic precipitator is a device that uses strong electric field corona discharge to ionize gas, charge dust particles, and separate them from the airflow under the action of Coulomb force. The characteristics of an electrostatic precipitator are dust removal, ability to handle high-temperature gases, low resistance, low operating costs, but high steel consumption, high cost, and high technical requirements. Due to the large flue gas treatment capacity and low resistance of electrostatic precipitators, they have good adaptability to smoke and dust concentration, can collect dust particles of different sizes, achieve dust removal above, lower operating costs, and improve environmental emission standards, and can meet the requirements of the new environmental emission standards after improvement. Therefore, despite the high initial investment, large land occupation, and high requirements for manufacturing, installation, and maintenance quality, most large and medium-sized coal powder furnaces use electrostatic precipitators.

The above are the classification principles of Huiyang Company's coal-fired boiler dust collectors. Our company is committed to the design, production, installation, and after-sales service of boiler dust collectors. The product quality is trustworthy and the after-sales customers have affirmed it. When buying a coal-fired boiler dust collector, please look for Manager Mu from Huiyang manufacturer