Classification and precautions of dust collectors

The dust collector is a device that separates dust from the flue gas or is called a dust removal device. The performance of the precipitator is expressed by the amount of gas that can be treated, the resistance loss of the gas through the precipitator, and the efficiency of the dust removal. At the same time, the price of the precipitator, the cost of operation and maintenance, the ease of usage and the ease of operation and management are also important factors in considering its performance. Dust collector is a commonly used facility for boiler and industrial production.
The dust collector is divided into the following categories according to its principle:
1. Filter type dust collector. Including bag filter and particle layer dust collector.
2 .Electrostatic precipitators.
3. Magnetic precipitator.
Dust collector in accordance with the way dust is divided into:
1. Dry dust collector;
2. Semi - dry dust collector;
3. Wet dust collector
Dust collector working principle:
Dust gas from the upper end of the ash bucket into the air, under the action of the windshield, the air flow, the flow rate decreases, part of the large particles of dust due to the role of inertial force is separated out into the hopper. Dust-laden gas into the box by the filter bag filter purification, dust was blocked in the outer surface of the filter bag, the purified gas through the filter bag into the upper box, discharged from the outlet.
Modern industry is widely used: electronic bag compound dust collector and bag filter.
Electronic bag compound dust collector namely in the box, the front side of the installation of a short electric field, the back of the installation of the filter bag field, soot from the left into the first, after the electric field area, dust particles in the electric field area, the charge effect of 80% -90% dust is collected (to play the advantages of ESP, reduce the filter bag load).
After the electric field of the flue gas through the electric field area into the filter bag after the second filter, the outer surface of the filter bag into the filter bag cavity, the dust was blocked in the outer surface of the filter bag, pure gas from the cavity into the flue, Discharged from the flue.
Electronic bag compound dust collector combines the advantages of both electrostatic precipitator and pure bag filter, is a new generation of dust removal technology.
Precautions for usage of dust collectors: In usage to prevent the gas in the bag room to cool below the dew point temperature, especially in the usage of negative pressure bag filter should pay attention. Due to its shell often have air leakage, the bag chamber gas temperature is lower than the dew point temperature, the filter bag will be damp, so that the dust is not loosely attached to the filter bag, but sticky paste attached to the filter bag, resulting in paste bag cannot dust, the filter bag hole blocked, resulting in cleaning failure, so that the dust collector pressure drop is too large, and cannot continue to run.