Bag Filter: Everything You Need to Know

Apr 12 2024

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A dust collection device made from woven or non-woven fabric that makes a bag that collects the dust. The cylindrical-shaped bag made from filter cloth is suspended to make a baghouse or a fabric filter.

The main purpose of these bags is to collect dust. The dust layers get deposited on the surface of the Dust collector filter bag and then in the interior of the filter cloth and collect the dust contained in the process gas. The fabric works as a surface that accumulates the dust on it. The accumulation happens due to electrostatic interaction. Together these mechanisms result in the making of dust cake.

What is the function of industrial filter bags in a boiler?

It’s important to maintain air quality for efficiency in boilers, especially in industrial settings. These bags play an important role in maintaining air quality by capturing dust particles and pollutants from the air.

What is the use of a bag filter in a boiler?

These bag filters are integral parts of any boiler system. These bag filters are also known as Baghouse dust collectors. Flue gases that are released into the atmosphere can easily be captured by these bag filters along with dust particles. This not only helps to ensure that the process is under environmental regulations but also increases efficiency by preventing equipment fouling and maintaining air quality.

Understanding Bag Filters

Type of Bag Filter:

There are many types of bag filters present in the market. It’s important to choose the perfect one according to your requirements. These bags are categorized based on the material used, sizes, and filtration efficiency. The common types of bag filters are pulse jet bag filters, reverse air bag filters and cartridge collectors. Each bag offers unique benefits depending on the application.

Learn: How Often Should You Change Your Baghouse Filters

Pulse jet bag filter:

The Pulse jet system has an excellent air-to-cloth ratio. These bags are mostly used in the application of boilers application like in power and steel plants as well as in furnaces and industrial settings for removing fumes and dust. These Pulse-jet system bags offer versatile installation options and boast a compact design, reducing costs and facilitating maintenance.

Reverse air bag filter:

The reverse air bag house is almost similar to the shaker bag house. They’re known for collecting particulate matter generated in industrial processes. It has an electrostatic precipitator to trap most of the dust before releasing gas into the atmosphere. It helps in balancing gas distribution and a PLC control panel. There are two types of these bags: The older style baghouse with rectangular housing and multiple compartments, and the newer reverse gas filter.

Shaker bag filter

Shaker bag filters are known for removing gas and liquid contaminants by trapping particles from the air. They come in various sizes and offer efficient filter changes, reducing the cost of labor. Because of the compact, high airflow system, these bags are reusable pleated cartridge filters for space-saving design. Compressed air filters the bags for efficient operation.

Advantages of Bag Filters

  • efficiency:
  • These Dust collector filter bags offer high filtration efficiency and capture even micron-sized particles.

  • Versatility:
  • These bags can be customized according to every industry's need from boilers to chemical plants.

  • Cost-effectiveness:
  • They’re cost-effective solutions to counter air pollution, requiring minimal maintenance and operating costs.

  • Environmental compliance
  • These bags help industries comply with stringent environmental regulations.

  • Longevity:
  • These bag filters have a long service life if maintained properly which contributes to sustainable operations.

Applications of Bag Filters

Industrial Applications:

Bag filters have various applications in industries like power generation, cement manufacturing, pharmaceuticals, and food processing. They’re installed to maintain air quality and efficiency and for environmental protection.

Bag Filters for Liquid Filtration:

Apart from air filtration, these bags can be used in liquid filtration applications. Industries like wastewater treatment plants, chemical processing units, and industrial filtration systems to remove impurities and ensure the quality of liquids.

Qualities to Look for in a Bag Filter Manufacturer

When selecting a bag filter manufacturer, consider the following factors:

  • Experience and expertise:
  • Choose a manufacturer with a proven track record and expertise in the industry with modern technology.

  • Quality and durability:
  • Make sure the bag filters are made of high-quality materials and follow strict quality standards.

  • Customization option:
  • Choose a manufacturer that provides customization options to meet the requirements of the industry.

  • After-sales support:
  • Choose a company that offers comprehensive after-sales support, including installation, maintenance, and technical assistance.


In the last, Bag Filters for Dust collectors are a very important component of industrial filtration. Be it liquid or air which helps in maintaining industrial efficiency and environmental sustainability. They capture dust and pollutants and help maintain air quality while complying with regulations and processes. So, when selecting a Bag filter make sure you choose the right manufacturer that prioritizes quality and has the expertise and customer support for after-sales service.