Product Name: Pulse jet bag filter/pulse jet baghouse
Dust Collecting Rate: 99% ~ 99.9%
Weight: 865 ~ 2595 tons
Condition: brand new
Air Volume: 2160 ~ 20800 m3/h
The pulse jet bag filter, which is also called a pulse jet baghouse, is a type of highly efficient reverse jet dust collector equipment developed from the design of traditional bag filters. It is especially good at collecting tiny dry non-fibrous particulates, which makes it an indispensable device for controlling air pollution in many industries. It is widely used in cement plants, grinding plants, steel mills, power plants, mines, and other fields.
As the result of continuous development of the dust removal process, the pulse jet bag filter integrates advantages of all kinds of reverse jet filters, including large air processing capacity, high dust collecting efficiency, simple structure, high filtration rate, and long service life, etc., and at the same time overcomes the shortcomings of traditional bag filters, such as insufficient cleaning intensity and uneven distribution of inlet and outlet air.
Pulse jet bag filters and electrostatic precipitators (ESP) are both dust collectors that are often used in cement plants. These two dust collectors have their own advantages and disadvantages. You may choose the appropriate one according to your own production needs. Whether you choose bag filters or electrostatic precipitators, AGICO has the ability to provide you with the best quality dust collector solutions.
Compared with ESPs, pulse jet bag filters have the following advantages:
- Bag filters have extremely high dust removal efficiency which can reach 99.99%;
- Their dust removal efficiency will not be affected by the electrical resistivity, concentration, and particle size of the dust air;
- Pulse jet baghouses adopt compartment structures, they can be overhauled in turn without affecting the operation of production equipment.
- Bag filters can capture fine dust more effectively, their removal effect of heavy metal particles in the dust is better than that of electrostatic precipitators;
- Bag filters have less auxiliary equipment and require less investment to manufacture;
- Combined with spray drying equipment, bag filters may eliminate the SO2 pollution from dust air.
|Number Of Bags||4||6||8||10||12||14||16||18|
|Filtration Rate (%)||99~99.9|
|Processing Gas Dust Concentration (g/m³)||3~5|
|Filter Bag Specifications（mm）||Φ160×6000|
Application of Bag Filters in Cement Plants
Many links in the cement manufacturing process produce dust-laden gas and pollute the air environment. So usually there is more than one dust collector in a cement plant. In a large new dry process cement plant, the total number of dust collectors needed to be equipped is more than 50.
The dust collectors in a cement plant are mainly arranged in the raw material crushers, cement raw mix mills, coal mills, clinker coolers, rotary kilns, cement mills, etc.
Pulse Jet Baghouse Working Principle
The main parts of a pulse jet bag filter include a pulse-jet cleaning mechanism, a filter bag assembly, an inspection door, a blow pipe, and a hopper. The picture below is a brief diagram of a pulse jet baghouse.
After the dust-laden air enters the dust collector from the inlet, the flow velocity of the air decreases rapidly because of the sudden expansion of the air flow volume. The dust with larger particle size in the airflow will settle into the ash hopper of the baghouse under the action of gravity.
The rest of the dust particles pass through the filter bag with the air flow, and are blocked on the filter screen of the filter bags. The purified air is discharged from the air outlet of the housing through the venturi.
With dust accumulated on the filter bag screens, the resistance of the bag filter will increase. To keep the resistance within the limited range, the sequential controller sends a signal to activate solenoid pulse diaphragm valves and lets the compressed air in air manifolds inject into the corresponding venturi through blowholes on the blow pipes.
And when the high-speed air flows through the venturi, the surrounding air is induced to enter the filter bag, which makes the filter bag expand rapidly. Due to the impact of reverse pulse airflow, the filter bag then shrinks rapidly. The filter bag keeps expanding and shrinking in such a short time to shake off the dust particles accumulated on the filter screen bags. The dust will fall into the hopper and be discharged from the baghouse by the rotary valve.