How to choose a bag filter?

How to select the bag filter, the bag filter, mainly from the four aspects of the processing air volume, the operating temperature of the dust-containing gas, the special, the line, the emission requirements, etc., the treatment air volume refers to the total air volume of the bag filter inlet including the member equipment dust collection air volume, necessary, standby, air volume, valve and pipeline leakage air volume, as well as, direct exchange, air, cooling air volume, treatment air volume, is, bag filter design selection, one of the most important factors, the specification of the bag filter, depending on, the size of the air volumeThe operating temperature of the bag filter, even if, the inlet temperature of the dusty gas, in many cases, measures need to be taken to change, the temperature of the dusty gas, to cool or heat up, to select, to try, and economically, green. Sanhan Shen gas characteristics: whether the gas has flammable, explosive, corrosive and other characteristics Fourth, the emission requirements of the export of the bag filter must meet the emission standards stipulated by the state, industry and local governments, which is the basic principle of the design and selection of bags and dust collectors.

The most important thing in choosing a bag dust collector is the material and temperature resistance of the bag. In addition, we should try to shorten the length of the bag, the longer the bag, the worse the cleaning effect, and at the same time pay attention to the number of bags, be sure to meet the use, do not be deceived by the merchant, less configuration. Attention should also be paid to the configuration of the pulse cleaning device, mainly the quality or brand of the components, especially the quality of the solenoid valve and cylinder.

If you need to configure the air compressor, you must choose a gear, if the air compressor is the same configuration, the ash removal effect is not good. There are still many things to pay attention to, it is best not to mention the conditions first, let multiple manufacturers report the plan, and then compare themselves, not to choose in the comparison, but to find out the strengths of each family, and then put forward the conditions.

Hello. The dust collector is one of the options to eliminate the number of dust spots.

Choose a dust collector to eradicate the type of dust.

Eliminate dust temperature to select a dust collector.

There is also the estimated air volume of the equipment to choose.

The gas purification method of the bag filter is the external filter type, the dust-containing gas enters the filter room of each unit by the diversion pipe, because the vertical distance between the bottom of the filter bag and the upper mouth of the air inlet in the design has sufficient and reasonable air flow through appropriate diversion and natural flow distribution, so as to achieve uniform air distribution in the entire filter room, the particle dust in the dust-containing gas falls directly into the ash hopper after being separated by natural sedimentation, and the rest of the dust enters the filter area of the middle box with the air flow under the guidance of the diversion system, and is adsorbed on the outer surface of the filter bag. The filtered clean gas is discharged through the filter bag through the upper box and exhaust pipe.

The filter bag is sprayed with compressed air for ash cleaning, and the ash cleaning mechanism is composed of an air bag, a blowing pipe and an electromagnetic pulse control valve. The top of each row of filter bag outlets in the filter chamber is equipped with a blowing pipe, and the lower side of the blowing pipe is equipped with a blowing port in the center of the filter bag, and a pulse valve is arranged on each blowing pipe and communicates with the compressed air bag. When cleaning the ash, the solenoid valve opens the pulse valve, and the compressed air is sprayed by the ash cleaning control device (differential pressure or timing, manual control) to open the electromagnetic pulse injection according to the set program, and the compressed gas passes through each pulse valve in a very short time in order through the nozzle on the blowing pipe to induce several times the air volume of the jet to enter the filter bag, forming an air wave, so that the filter bag produces a sharp expansion and impact vibration from the bag mouth to the bottom, resulting in a strong ash cleaning effect and shaking off the dust on the filter bag.

Specifications and models Filtration area (m2) Number of filter bags (pieces) Number of pulse valves (pieces) Air volume (m3) Compressed air consumption (m3 min).

mc-ⅱ-24 18 24 4 3240-6480

mc-ⅱ-36 27 36 6 5400-10800

mc-ⅱ-48 36 48 8 7550-15100

mc-ⅱ-60 45 60 10 10800-21600

mc-ⅱ-72 54 72 12 2160-4320

mc-ⅱ-84 63 84 14 4320-8640

mc-ⅱ-96 72 96 16 6480-12960

mc-ⅱ-120 90 120 20 8650-17300

The bag filter is a dry dust filter device. Jiuzheng Tongming believes that the bag filter is suitable for capturing fine, dry and non-fibrous dust. The filter bag is made of textile filter cloth or non-textile felt, and the dust-containing gas is filtered by the filtration effect of the fiber fabric, when the dust-containing gas enters the bag filter, the dust with large particles and specific gravity settles down due to the action of gravity and falls into the ash hopper, and the gas containing finer dust is blocked when passing through the filter material, so that the gas is purified.

The operation of the bag filter can be divided into trial operation and daily operation. First of all, during the test run, the individual components of the system must be inspected, and then the adaptive operation must be carried out, and part of the performance test must be carried out. In daily operation, the necessary inspections should still be carried out, especially the performance of the baghouse.

Be aware of the impact that changes in the load on the host equipment will have on the performance of the dust collector. After the machine starts, you should pay close attention to the working condition of the bag filter and make relevant records.

Advantages of bag filter: Advantages of bag filter: 1. High dust removal efficiency, can capture fine dust with a particle size greater than microns, and the dust removal efficiency can reach more than 99%.

2. Flexible use, the air volume can be from hundreds of cubic meters per hour to hundreds of thousands of cubic meters per hour, which can be used as a small unit directly located indoors, near the machine tool, or as a large dust removal room, that is, a "bag room". 3. The structure is relatively simple, the operation is relatively stable, the initial investment is less (compared with the electrostatic precipitator), and the maintenance is convenient. Therefore, bag filters are widely used to eliminate dust pollution, improve the environment, and improve materials.

4. Easy dust handling. The bag filter is a dry purification equipment that does not require water, so there is no sewage treatment or mud treatment problem, and the collected dust is easy to use. Disadvantages of bag filters:

1. Some flue gas contains more moisture, or the dust carried has strong hygroscopicity, which often leads to the adhesion of the filter bag and the blockage of the filter material. In order to ensure the normal operation of the baghouse, necessary insulation measures must be taken to ensure that the moisture in the gas does not condense. 2. Some types of bag filter workers have poor working conditions, and when checking and replacing the filter bag, they need to enter the box.

3. The ability to withstand temperature has a certain limit. Cotton and wool filter media can withstand temperatures of 80-95 degrees, synthetic fiber filter media can withstand temperatures of 200-260 degrees, and glass fiber filter materials can withstand temperatures of 280 degrees. When purifying flue gases with higher temperatures, measures must be taken to reduce the temperature of the flue gases.

Application range of pulse back-blowing bag filter: The application range is very wide. Machinery and equipment, workshop grinding, power plants, cement plants, workshop dust removal, lower cost than filter cartridges, and more suitable for applications in places with high humidity in the south.

Basically, it can be applied, except when the temperature is particularly high and almost exceeds 350 degrees, because the filter bag will burn through. In addition, when dealing with damp and oily dust, the filter bag will also be clogged.

Suitable for: flue gas treatment and dust removal system for ironworks, steelworks, ferroalloy plants, refractory plants, foundries, power plants, etc. Flue gas filtration for garbage incinerators, coal-fired boilers, fluidized bed boilers, etc.

Asphalt concrete mixing, building materials, cement ceramics, lime, gypsum and other production sites. Aluminum electrolysis, lead, tin, zinc, copper and other rare metals smelting flue gas filtration, fine materials, liquid and solid separation. Liquid-solid separation and fine materials in the fields of chemicals, coke, carbon black, dyes, pharmaceuticals, plastics, etc.

Dust control and purification collection in mining, grain processing, flour, electronics industry, wood processing, etc.