Working principle of bag filter in cement plant

The working principle of the bag filter in cement plant is: dust-containing gas enters the middle and lower boxes from the air inlet of the dust collector, and enters the upper box through the filter bag. Due to the various effects of the filter bag, the dust and gas are separated. The dust is adsorbed on the filter bag, and the gas passes through the filter bag and enters the upper box through the venturi, and is discharged from the air outlet. In the process of purifying dust-containing gas through the filter bag, as time increases, more and more dust accumulates on the filter bag, so the resistance of the filter bag gradually increases, and the amount of gas passing through the filter bag gradually decreases. In order for the dust collector to work normally, the resistance must be controlled within a limited range (usually 120 to 150 mm water column). In this way, when the resistance rises to the limited range, the controller will issue instructions to trigger the control valves in order, open the pulse valve, and the compressed air in the air bag will be sprayed into the corresponding filter bags from the holes of the blowing pipe through the venturi. The filter bag expands sharply under the momentary reverse action of the airflow, so that the dust accumulated on the surface of the filter bag falls off, the filter bag is regenerated, and the cleaned dust falls into the ash hopper and is discharged from the body through the ash discharge system. Because the dust accumulated on the filter bag is regularly removed, the purified gas passes through normally, and the dust collector works normally.

Working Temperature: ≤120℃
Main Material: Polyester needle felt with water&oil repellent, Acrylic needle felt, Polyester needle felt with water&oil repellent and PTFE membrane, etc.
Finish Treatment: Calendering, Heat setting, Singeing, Water&Oil Repellent, PTFE Membrane
Diameter&Length: Customized
Capacity: 2000 pcs per day
Customization Accepted

We supply a full range of filter bag cages; each cage made in filmedia® can meet the requirements of being light, handy, smooth and straight. Cage resembles the rib of the bag. It should be light, handy, easy to install, maintain, and it is smooth and straight, to prevent the bag from damage.

Material of filter bag cage:

1. Galvanized steel
2. Stainless steel304, 316, 316L and etc.
3. Silicon power plated

Provide us the data of filter bag cage:

The quality of filter cage has directly bearing on the filtering state and service life of a filter bag. So the detailed and accurate data can ensure the normal use of the product to the maximum extent. It’s great that you can provide design drawings, or if you provide data according to the following information.

1. Filter cage material and size
2. Quantity of vertical wires
3. Space of Horizontal wires
4. Wire diameter
5. Cell plate sizes of dust collector or baghouse