Bag dust collector VS Electrostatic dust collector, which one is better?

Bag dust collector VS electrostatic dust collector, which one is better？

Bag dust collector VS electrostatic dust collector, which one is better？

If there is a word that has been active in the public’s attention recent years, it must be “environmental protection”.

In the chemical industry, environmental protection involving a wide range of steel, smelters, cement plants, carbon black plants, power plants and other enterprises smelting, smashing, screening and combustion of dust purification and recycling process, will cause air pollution and dust pollution.  

How to make energy-saving transformation, emissions meet national standards, to complete environmental goals, has become a practical issue in front of the enterprises.

How to effectively remove harmful substances in chemical plant, it is very important for environmental protection.

From a technical point of view, you can choose the flue gas purification equipment, there are two ways: bag dust collector and electrostatic dust collector.

Electrostatic dust collector came out earlier, but the bag dust collector surpasses the former and become main stream.

Electrostatic dust collector was put into use very early for dust collecting in China industry; electrostatic dust collection method has been used for many years.

Electrostatic dust collector  

Electrostatic dust collector working principle

Electrostatic dust collector are very efficient in the early stages of using, but with the time using, even the appropriate means of maintenance, its operating efficiency will gradually declining.

As the smoke and dust emission national standards are getting higher, for the existing electrostatic precipitator, The technology reconstruction need to be carried out to achieve the new emission standards.

Therefore,  the bag filter with the better effect and high dust removal efficiency become the first choice, the main reason is to reduce the emission concentration.

Bag dust collector

Bag dust collector is a dry filter device. It is suitable for capturing small, dry, non-fibrous dust. The filter bag is made of a textile filter cloth or a non-woven felt, and the dusty gas is filtered by the filtering action of the fiber fabric.

When the dusty gas goes into the bag filter, the dust in large particles and big density, fall into the hopper in function of gravity; the gas with smaller dust goes through the filter, the dust was stayed, so that the gas was purified.

Features of baghouse dust collector

• High dust removal efficiency, more than 95%, higher classification efficiency for submicron particle fine dust.
• Wide range of air volume processing, can be used for industrial aluminium furnace gas dust, reduce air pollutant emissions.
• Simple structure, easy maintenance operations.
• The same high dust removal efficiency as electrostatic dust collector , the cost is lower than it.
• Glass fiber, PTFE, P84 and other high temperature filter materials will be used, can be operated more than 200 ℃ high temperature conditions.
• Not sensitive to the characteristics of dust, free from dust and resistance.

 Bag dust collector structure map

Bag dust collector is the most widely used in aluminum industry, because of its high efficiency dust removal,  meet the high environmental requirements; stable operation, adaptability,  can handle gas from hundreds of cubic meters to hundreds of Million cubic meters per hour, application to many industrial and mining enterprises dust removal equipment purification equipment.

Bag impulse dust collector working principle

What is the advantage of the bag dust collector?

1.High efficiency, lower dust concentration, is the general trend of the development of dust removal equipment.

This is because: pollution control standards getting higher and higher, law enforcement efforts continue to increased, advanced control ways, the public awareness increase rapidly for the environment. In this situation, the advantage of bag dust removal technology is more important.

The bag dust collector has the most rapid growth in developed countries, and it is the dominant position in the market.

2.China’s bag dust collector manufacturing has reached to a certain level, can be produced to meet the emission standards of the corresponding equipment components.

This is mainly due to the following two factors:

The first, the general application of needle felt filter, while “surface filter material” and other new media also occupy a certain market share. Surface filter material can further improve the efficiency of dust removal, but also easy for cleaning. It has three different types: the filter is covered with PTFE film; coated on the filter; made of ultrafine fiber filter layer.

The second, the dust filter bag connecting technology has made great progress. A new method is that accurate machining to the perforated plate and filter bag opening , insert filter bag into bag holes with the elastic element of bag opening, and the tolerance is good and the sealing is good, thus eliminate dust removal efficiency gap between the dust collector and filter bags.

   Filter bag

3.After 1990s, several anti-blowing bag dust collectors’ applications gradually reduced in the industry, and pulse jet type of dust cleaning is gradually becoming the first choice.

The new generation of pulse bag filter technology, represented by long bag low pressure pulse bag filter, completely overcomes the shortcomings of traditional pulse, has the more power for cleaning dust, high efficiency of dust removal, long bag length (up to 6 m or even 8 m ), The small space occupation, the equipment resistance is small and the required clean gas source pressure is low, the energy consumption is less, the working is reliable, the bag changing is convenient, the maintenance is less and so on, is increasingly widely used in the vast majority of industrial sector with good results.

4.Bag dust collector achieves a breakthrough to meet the high dust concentration in the field, can directly deal with the concentration of 1400g / Nm3 gas with dust and discharge up to the standard. 

Now the inlet dust concentration than ever has been increased several times, therefore, many industrial factories abandon the original multi-stage dust collection process for dust removal system, replace with bag impulse dust collector.

For example, long bag low pressure pulse bag dust collector, strengthen its filtration, cleaning and safe explosion-proof function, the formation of high concentration of pulverized dust collection technology, has been successfully used for aluminum industry and got good economic benefits, social benefits, environmental benefits.

5.Bag dust collector filter materials have been developed rapidly.

High-temperature filter materials now got diversified, besides METAMAX, P-84, Procon, RrTUN, Teflon are widely used, but FMS and Basofil filter has been commercialized; China’s fiberglass needle felt manufacturing and application technology is matured, Through the filter media calendaring, oleophobic, hydrophobic, flame retardant, anti-hydrolysis, anti-static treatment, so that the filter can adapt to a variety of complex environments and get better performance.

6.Bag dust collector application technology has made great progress.

In the face of ever-changing production technology and dust properties, the equipment type selection, parameter determination, various adverse factors (high temperature, high humidity, high dust concentration, fine dust, hygroscopic dust, corrosion, flammable, Etc.) to prevent, rational operation and the establishment of maintenance systems, etc., are more reliable, perfect, which is the application of the field of continuous expansion of the important reasons.

Bag impulse dust collector project

So our suggestion is baghouse impulse dust collector for aluminum industry through the above information.

Contact us now to obtain a reliable no-obligation quote on your baghouse dust collector!