Principles of Bag Filter Dust Collectors
(1) Mechanical Dust Collectors: These devices utilize mass forces such as gravity, inertia, and centrifugal force to separate dust particles from the airflow. Examples include gravity settling chambers, inertial dust collectors, and cyclones.
(2) Filter-Type Dust Collectors: These bag filter dust collectors utilize a special filter fabric or porous packing layer to filter and separate dust particles from the airflow. Bag filters and particle layer dust collectors are common examples.
(3) Electrostatic Precipitators: These devices employ high-voltage electric fields to charge dust particles and separate them from the airflow using Coulomb force. Electrostatic precipitators can be categorized as dry or wet, and they may have single-zone or double-zone layouts based on charge and separation areas.
(4) Wet Dust Collectors: These bag filter dust collectors use droplets or liquid films to separate dust particles from the airflow. They include impact, foam tower, venturi, and other types of dust collectors.
(5) Modular Dust Collectors: These bag filter dust collectors integrate various purification mechanisms to enhance efficiency. They can combine mechanical and filtration, mechanical and electrostatic, or wet and static methods, among others.
In practice, dust collectors are often classified based on their efficiency levels as high-efficiency, medium-efficiency, and low-efficiency bag filter dust collectors. Electrostatic precipitators, bag filters, and some wet dust collectors are widely used high-efficiency dust collectors, while cyclone bag filter dust collectors and other wet dust collectors fall under medium-efficiency. Gravity settlers and inertial dust collectors are considered low-efficiency dust collectors.
Based on dust removal equipment, bag filter dust collectors can be classified into seven types:
(1) Gravity and Inertia Dust Removal Devices: Examples include gravity settling chambers and blocking devices.
(2) Cyclone Dust Collectors: This category includes single-cylinder and multi-cylinder cyclone dust collectors.
(3) Wet Dust Collectors: Examples include spray dust collectors, impulse dust collectors, water film
