The work of the dust collector not only directly affects the reliable operation of the dust removal system, but also relates to the normal operation of the production system, the environmental sanitation of the workshop area and surrounding residents, the wear and life of the fan blades, and the economic value materials. Recycling issues. Therefore, the dust collector must be properly designed, selected, and used.
Dust Collector List
Product Description of Pulse Jet Dust CollectorThis pulse jet dust collector is a new type of dust collector developed on the basis of our company's first generation dust collector.
Description of the dust collector1. How it worksThe wind motor drives the machine to run. During the process of dust collecting, the dust will be adsorbed on the filter element, and the vibration devi...
According to the requirements of dust removal efficiency
Different dust collectors have different dust removal efficiencies. In normal operation, the efficiency of the precipitator is: bag filter, electric precipitator and venturi dust collector, water film cyclone dust collector, cyclone dust collector, inertial dust collector, gravity dust collector
According to the nature of the gas
When selecting a dust collector, factors such as air volume, temperature, composition, and humidity must be considered.
According to the nature of dust
Dust properties include specific resistance, particle size, true density, scorch, water and hydraulic, flammable, explosive, and the like.
According to pressure loss and energy consumption
The resistance of the bag filter is greater than that of the electrostatic precipitator, but compared with the overall energy consumption of the precipitator, the energy consumption of the two is not much different.
According to equipment investment and operating expenses
Water-saving and antifreeze requirements
7. Requirements for dust and gas recycling
When the dust has the recovery value, dry dust removal should be adopted; when the dust has high recovery value, the bag type dust collector should be used; when the purified gas needs to be recycled or the purified air needs to be recycled, it should be adopted. High-efficiency bag filter.
Dust Removal Principle of Dust Collectors
Under the action of the main fan of the system, the dust-containing gas enters the air box at the bottom of the dust collector from the air inlet of the lower part of the dust collector to pre-treat the dust-containing gas, and then enters into the dust-removing chamber of the upper tank from the bottom; dust adsorption On the outer surface of the filter cartridge, the filtered clean gas permeates through the filter cartridge into the clean air chamber of the upper tank and is collected and discharged to the air outlet.
As the filtration conditions continue, the dust accumulated on the outer surface of the filter cartridge will accumulate more and more, which will increase the running resistance of the equipment. In order to ensure the normal operation of the system, the upper limit of the dust collector resistance should be maintained in the range of 1400-1600Pa. Within this limit, the three-state cleaning should be performed by the PLC pulse automatic controller through a fixed resistance or a timing command.
The cleaning process of the filter cartridge type dust remover is to cut off the clean air outlet passage of a certain chamber so that the chamber is in a state of airflow still state, and then the compressed air pulse is backflushed and cleaned, and after a few seconds of cleaning. After the natural settlement, the net air outlet passage of the chamber is opened again, not only the ash is completely cleaned, but also the secondary adsorption of the dust generated by the spray cleaning is avoided, and the cycle is repeated.
Influential Factor of Dust Collectors
Temperature control: Generally, the temperature of the filter drum is 200 °C, so the inlet temperature of the treatment facility should be controlled below 200 °C. When the flue gas after the long pipe reaches the dust collector box, the temperature can be reduced to 200. Below °C.
Fan selection: The induced draft fan has a better effect than the blower.
Mechanical dust removal is more convenient and clean than manual dust removal, but the cost of mechanical dust removal is high. Most of them use the pulse dust removal method.
Air leakage and resistance: Theoretically, the dust removal efficiency of the bag filter is up to 99%, but it is not achieved in the actual measurement, mainly due to the influence of air leakage and resistance. The lower the air leakage rate, the better the dust removal effect and the filter cartridge needs to be cleaned in time.
The dust collecting hood should be as close as possible to the burner head, so that the dust can enter the hood more easily, increase the dust collection and reduce the pollution caused by unorganized emissions.
Equipment maintenance: equipment and cloth bags are easily damaged and should be repaired and replaced in time.
Airflow speed: Under the airflow speed of 1~3 m/s, the dust removal effect is the best, and the general wind speed is controlled at 2~4 m/s.
Filtration area: The larger the filtration area, the higher the dust removal efficiency, but the cost will increase accordingly. Therefore, the air volume should be calculated in advance, and then the corresponding dust collector model should be selected.
About Niel Machinery
Neil Machinery has two main dust collectors, cyclone dust collector and pulse jet dust collector. These two dust removers are essential dust removal equipment for powder production lines. They can be installed next to silos or dumping platforms for dust absorption. Clean up the workshop, Neil's professional engineering service team can provide free training and guidance for customers. If you need such a machine, please don't hesitate, please don't hesitate to contact us.