Pulse Bag Filter

advantage:

● High dust removal efficiency, capable of capturing dust larger than 0.3nm and purifying dust-laden gas to 15mg/m³ or even below.

● There are fewer ancillary equipment, less investment, and the technical requirements are not as high as those of electrostatic precipitators.

● It can capture dust that is difficult to recover by electrostatic precipitator; and to a certain extent, it can collect compounds such as nitrates and sulfides.

● Good adaptability to load changes, especially suitable for capturing fine and dry dust, the collected dry dust is easy to handle and recycle;

● Bag dust collectors are safer when collecting dust-laden gases that are explosive or contain sparks.

Dust removal device type:

According to the mechanism of dust collection, it can be divided into four types: mechanical dust collector, washing dust collector, filtering dust collector (bag dust collector) and electrostatic dust collector.

The working principle of the pulse bag filter is to use the filter bag made of fiber woven material to filter dust and purify the dust flow. If a certain degree of dust accumulates on the filter bag, the filter bag is cleaned and washed by compressed air in the form of pulses, so as to achieve the purpose of cleaning the filter bag. The pulse bag filter will enter the vacuum chamber in the box from the bottom of the box under the action of the suction fan. The dust particles can be trapped on the outer wall of the filter bag. After passing through the filter bag, the air is purified through the exhaust port. Analysis of the working principle of the pulse bag filter: As the dust particles increase, the resistance of the pulse bag filter on the surface of the pulse bag filter increases, which will gradually weaken the filtering capacity. When the resistance of the pulse bag filter reaches a certain time, it needs to be cleared.

At this time, the pulse control instrument of the pulse bag dust collector sends out a signal at a fixed time, opens the electromagnetic pulse valve in sequence, and can quickly pass the compressed air bag through the pulse valve through the hole on the spray gun, and spray a high flow of the ejector. Filter bag, so that the filter bag can expand rapidly, and after blowing, the filter bag will shrink sharply. Analyze the working principle of the pulse bag dust collector: Such expansion and contraction can ensure that the filter bag is in good working condition. Since the dust cleaning process is carried out in sequence and the dust air is not cut off, the dust removal capacity remains basically unchanged during the working process of the pulse bag dust collector.

Dust collector skeleton analysis pulse bag dust collector working principle: in order to meet the requirements of different working conditions, the pulse controller can adjust the pulse interval and pulse width of the pulse bag dust collector at will. If the dust bag is found that the equipment resistance exceeds the limit range and the outlet, if there is obvious dust, it can be checked and adjusted according to these methods. We can use the troubleshooting method: release it to see if it is because of too much dust in the filter bag or because of electromagnetic. When the valve fails, the solenoid valve and control system can be checked, and the dredging pipe can be cleaned. The covering form should be reasonably selected according to the distribution type of the pollution source, process equipment and production operation conditions, so that both can effectively control the dust without affecting the worker's operation and equipment maintenance.

In order to reduce vibration and rigid connection of the reciprocating equipment body, the holes and gaps in the cover must be reduced to ensure a tight and tight shell. According to the process operation requirements, the necessary working holes, inspection doors and observation holes should be set, the door holes should be tight, easy to install, and the opening and closing components should be flexible. Minimize the open area as much as possible. The opening position should be away from the positive pressure of the shell and avoid the parts with large air flow rate. Generally speaking, the operating temperature requirement of the pulse bag dust collector must be higher than the acid dew point temperature by more than 25K, which is safe for the dust bag to operate. This is mainly to avoid condensation when the operating temperature is lower than the dew point. INT will produce liquid water. The liquid water mixed with dust gathered on the surface of the filter bag can form a paste bag.