Bag Filters Function, Types, and Applications

Mechmons Engineers is a Leading manufacturer of Bag Filter & Dust Collector in India. A Bag Filter, also known as a bag house, dust Collector or fabric filter, Cartridge Bag Filter. Our bag filters are highly efficient in removal of particulates or gas released from industrial processes.

Our bag filter is made with filters to withstand the ever-increasing heat and pressure of the working system. The material is chosen so carefully ensuring that it does not let the dirt particle escape from the system. The property of the material and its weaving ensures giving long life to the system and much-needed permeability.

A bag filter, also known as a fabric filter, is a type of air pollution control device that is commonly used in industrial settings to remove particulate matter from air streams. Bag filters are designed to capture particles of various sizes and types, including dust, smoke, and other airborne contaminants.

The basic design of a bag filter consists of a series of bags or sleeves made from a high-strength fabric material, such as polyester or fiberglass. The bags are arranged in a parallel configuration within a housing or casing, with one end of each bag open to the incoming air stream and the other end closed.

As the contaminated air flows through the bags, the particles are captured on the surface of the fabric material, while the clean air passes through and is discharged back into the environment. Over time, the particles accumulate on the surface of the bags, forming a cake that helps to increase the filtration efficiency.

Bag filters can be used in a variety of industrial applications, including cement production, metalworking, and food processing. They are typically operated at a high air-to-cloth ratio, which means that a large volume of air is passed through a relatively small area of filter media. This high flow rate helps to improve the capture efficiency and reduce the pressure drop across the filter, resulting in a more efficient and cost-effective air pollution control system.

The two most common types of Bag house are

  • Reverse pulse jet
  • Pulse jet

The dirty or contaminated air enters the bag filter through the inlet and passes through a number of filter bags which retains the dust particles on the exterior surface while allowing clean air to pass through the outlet. As the collector operates, the collected dust begins to form dust cake, which eventually diminishes the porosity of the filter cartridges. As the pressure drop increases the ventilation volume of the collector decreases.

To maintain a moderate pressure drop, the cleaning cycle is employed to provide continuous cleaning of the filter Bags. The Compressed Air Header momentary burst or pulse of high pressure compressed air through the blow pipe into the filter tube. This Pulse of air creates reverse flow of air, which expands the filter cartridges to remove the collector dust.

The cleaning procedure occurs on a row‐by‐row basis therefore only a fraction of total filter air is interrupted for cleaning allowing continuous ventilation.

Applications Of Bag Filter
  • Boiler / Thermic Fluidic Heaters
  • Metals & Minerals
  • Cement Mill
  • Coal Mill
  • Pharmaceuticals
  • Chemicals
  • Steel & Power
Features & Benefits
  • Easy to operate and Handle.
  • Easy to install & remove.
  • High Filtering efficiency even for the finest dusts.
  • Filter media selection as per application.
  • High dust collection ability
  • High flow rates