1. Filtration area
The filtration area is one of the basic parameters of the baghouse, which determines the processing capacity and filtration effect of the equipment. The larger the filtration area, the more volume of gas can be processed per unit time, and the higher the dust collection efficiency. However, too large a filtration area will also increase the volume and cost of the equipment, so it is necessary to make a reasonable selection according to the actual needs and operating conditions.
2. Filter bag material and specifications
The filter bag is the core component of the bag filter, and its material and specifications directly affect the filtration accuracy and service life. Common filter bag materials are polyester, polypropylene, glass fiber, etc., different materials have different temperature resistance, corrosion resistance and wear resistance, which need to be selected according to dust characteristics and working environment. Bag specifications typically include parameters such as diameter, length, and number, which need to be matched to the filtration area and cleaning method to ensure efficient operation of the equipment.
Third, the way of ash cleaning
The cleaning method is one of the key factors affecting the working efficiency and filter bag life of the bag filter. Common cleaning methods include mechanical rapping, pulse injection and reverse blowing. Mechanical rapping is suitable for handling high humidity and viscous dust, but it may cause large wear and tear to the filter bagPulse injection and reverse blowing are suitable for dealing with dry and loose dust, with good ash cleaning effect and less damage to the filter bag. The choice of which cleaning method needs to be comprehensively considered according to the dust characteristics and equipment working conditions.
Fourth, the airflow velocity and pressure drop
Airflow velocity and pressure drop are important parameters to measure the performance of a baghouse. Too much or too little airflow speed will affect the filtration effect and ash cleaning effect, and it is generally recommended to control it at 05-2.0m s. Pressure drop refers to the pressure loss that occurs when the gas passes through the dust collector, too high a pressure drop will increase the energy consumption and operating costs of the equipment, and too low may mean that the filter bag is clogged or the ash is not cleaned completely. Therefore, it is necessary to set the airflow velocity and pressure drop reasonably according to the actual working conditions and equipment design.
5. Inlet and outlet dimensions
Inlet and outlet dimensions are also important parameters in baghouse design. The inlet size should be selected according to the gas flow rate and treatment capacity, while the outlet size should take into account the gas emission requirements and environmental standards. At the same time, the design of the inlet and outlet also needs to take into account the uniformity and stability of the gas flow, so as to avoid eddy currents and local resistance, which can affect the performance and life of the equipment.