Pulse jet bag filter

What's a pulse jet bag filter?

• an upper casing (clean air chamber)

• a middle casing (dust chamber)

• a hopper

• a pulse cleaning system

• filter bags

• filter bag frames(cages)

• inlet and outlet ports

• a differential pressure gauge

• a inspection door

• a dust discharge device

• a PLC control system

Function of  main components

The internal air is driven by the fan's power. A negative pressure environment forms inside the whole pulse jet bag filter. The ash air from the inlet enters the pulse jet bag filter under the pressure difference. The airflow passes through the dust filter bags, and the dust is trapped on the surface of the bags. The PLC control system sends pulse signals to the pulse valve. The high-pressure air from the compressor blows off dust from the filter bags. It collects the dust in the hopper, achieving dust recovery. And the clean air goes out from the outlet through the dust collector fan.

Tube sheet

The tube sheet in a pulse jet baghouse fixes and seals the filter bags. The holes on the same tube sheet should have uniform sizes. This will prevent dust leakage from loose or unsprung filter bag rings.The size of the baghouse tube sheet depends on the blowing capacity of the pulse valve.The tube sheet must support the weight of the filter bags and cages. The tube sheet in a baghouse dust collector is usually 4-6 mm thick. This depends on the number of dust filter bags in the chamber.To enhance the rigidity of the tube sheet, reinforcing ribs should be added. Use punching or plasma cutting on the tube sheet holes. Gas cutting is not allowed. The tube sheet, after fabrication, must be smooth and flat.  Its flatness deviation must not exceed 2/1000 of its length.

Blow pipes

The blow pipes in pulse jet bag filters are all seamless. And they are straightened using a straightening machine.The blow short pipes (the nozzles) use tooling molds and carbon dioxide shielding during welding. This minimizes deformation and ensures dimensional tolerances between the blowing short pipes. A blowing port is on the underside of the blowing pipe. It faces the center of the filter bag. Each blowing pipe is equipped with a pulse valve connected to the compressed air distributor.The blowing pipe is fixed to the upper casing with a bracket. It has locating pins for accurate repositioning after each disassembly and reassembly.

Filter bags

The filter bag is the heart of a pulse jet bag filter, playing a key role in filtering dust. Dusty air passes through the filter bags. The bag traps the dust. An induced draft fan draws away the clean air. As dust accumulates on the surface of the bag, the resistance of the filter increases. Now, the pulse control system gets a signal. It blows back the bag, causing the dust to fall into the hopper. The discharge device then removes the dust from the filter. The efficiency of dust removal depends entirely on the filter bag.

Special features of a pulse jet bag filter

• Pulse jet bag filters are very efficient.

• The dust collection efficiency remains stable.

• A pulse jet bag filter has a compartmentalized design.

• A pulse jet bag filterhas a small footprint.

• pulse jet bag filters are highly adaptable of capturing a wide range of dust types.

Specification

Pulse jet bag filter Applicable Fields

These pulse jet baghouses are suitable for:

• calcium carbide furnace dust removal

• electric furnace dust removal in ferroalloy plants

• steel plant flue gas purification

• coal-fired and small boilers in power plants

• garbage incinerator dust removal

• high-temperature flue gas dust removal in smelters

• aluminum plant flue gas purification

• cement plant rotary kiln dust removal

• carbon black plant tail gas dust removal

Knowledge center for pulse jet bag filter

Essential tips for installing bag dust collectors to enhance efficiency and air quality. Explore layouts and key installation requirements.

The Pulse Jet Bag Filter ensures over 99% dust removal efficiency, handling various airflow rates while reducing emissions.

Choose the right baghouse dust collector by understanding sales tactics, misinformation costs, and our tailored solutions.

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