What are the precautions when installing a large bag filter?

1) In addition to the size of the civil foundation, the quality of the foundation should be inspected, and then the installation should be carried out

2) The ash hopper, box, air chamber and the connection between the parts of the bag filter should have good sealing performance, and the kerosene penetration method should be used for inspection after the assembly of each part

3) The air tightness test should be done at the connection of the pipeline and each component of the injection system, and there should be no air leakage4) There must be a list when counting each part, counting the production parts one by one according to the list, confirming whether there are missing parts, and contacting the company with the missing parts in order to make the installation of the required parts complete and equipped as soon as possible

5) Check whether the quality of each part is qualified, whether there is deformation and rust, if it is unqualified, it should be repaired or replaced. The purchased parts must have a quality certificate and no obvious appearance damage before they can be assembled

6) The installation of color plate and galvanized plate must be the principle of construction first down and then up, first inside and then outside, to prevent rainwater from entering the insulation area, and at the same time the appearance should be beautiful

7) Before the installation of the filter bag, it is necessary to remove the debris on the air chamber and flower board, and then remove all the installation residues in the box and ash hopper, such as lifting lugs, tools, small parts, welding rods, welding slag, etc.

Precautions when using bag filter: 1. The pulse solenoid valve should not be hung too loose or too tight, too loose is easy to accumulate dust, too tight is easy to pull damage. 2. The old and new dust bags should not be mixed to avoid the normal operation of the equipment due to different damage times.

3. Replace the dust removal bag, blow it with compressed air first, and then check whether there are any holes, and leave them for replacement after repairing the holes. If the dust bag is covered by dust, rinse it with water, cool and dry it and leave it for later use. 4. The cloth bag should be frequently cleaned to remove the blockage of the dust bag; , so that the resistance can be expressed by increasing the reading value of the differential pressure gauge.

The blockage of the dust bag is the main reason for the wear, perforation, and falling off of the dust bag. 5. Aging of dust removal bags. Mainly caused by the following reasons, it is necessary to carry out a cause inspection, take measures and replace the dust bag.

6. Damage to the dust bag. The shape of the dust bag and the installation method and mechanism of the dust bag determine the position where the dust bag is easy to break, so that it can be inspected and repaired.

The following are the things you should pay attention to when using a bag filter:

Operation specification: Carry out correct operation in accordance with the equipment operation manual to avoid equipment failure or loss of work efficiency caused by misoperation.

Regular maintenance: Regularly clean and replace the bags of the filter Mutan Town, check the seals and electrical systems of the equipment, find problems in time and deal with them, so as to maintain the normal operation of the equipment.

Equipment environment: Keep air circulation around the equipment to avoid dust and moisture affecting the performance of the equipment. In harsh environments such as high temperature and high humidity, corresponding measures should be taken to protect the equipment.

Applicable materials: Select the appropriate filter bag material and model, and determine the filter bag type and filtration area according to the dust particle size, concentration, temperature, humidity and other characteristics in the exhaust gas, so as to achieve a good dust removal effect.

Operating parameters: control the air volume and differential pressure parameters to avoid overload operation and damage to the filter bag, and at the same time save energy and reduce operating costs.

Precautions are only some basic suggestions, and the specific use needs to be judged and dealt with according to the operation manual of the equipment and the actual situation.

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.

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 inspection of the performance of the bag type dust collector.

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.

In the daily operation of the bag filter, due to some changes in the operating conditions, or some failures, will affect the normal operation and performance of the equipment, it is necessary to regularly check and adjust appropriately, the purpose is to prolong the life of the filter bag, reduce power consumption and useful materials. The issues that should be noted are:

1. Running records.

Each ventilation and dust removal system should be installed and equipped with the necessary test instruments, which must be measured regularly in daily operation and accurately recorded, which can be judged according to the pressure difference of the system, the temperature of the inlet and outlet gases, the voltage and current of the main motor, and the fault can be discharged in time to ensure its normal operation.

The problems found through the record are: the working condition of the ash cleaning mechanism, the working condition of the filter bag (breakage, bag pasting, blockage, etc.), and the change of system air volume.

2. Fluid resistance.

The U-shaped differential pressure gauge can be used to judge the transportation situation: if the pressure difference increases, it means that the filter bag is blocked, the water vapor condensation on the filter bag, the ash cleaning mechanism fails, the ash hopper accumulates too much dust to block the filter bag, and the gas flow rate increases. A decrease in differential pressure means that the filter bags are broken or loose, the inlet side duct is clogged, or the valve is closed.

There is leakage between the box or each sub-chamber, and the speed of the machine slows down.

3. Safety bag filter should pay special attention to taking measures to prevent combustion, fire accidents and fire accidents. When dealing with combustion gas or high-temperature gas, there are often incomplete combustion dust, sparks, combustion and high-quality gases into the system, some dust has the nature of spontaneous combustion or charge, at the same time, most of the filter material is flammable, friction is easy to produce static electricity accumulation, in such operating conditions, there is a hazard of combustion, accidents, the consequences of such accidents are often very serious. Fire and explosion prevention measures should be well considered.

The precautions for the use of the bag filter are not to inhale open flames or eliminate burning particles. The dust collector is regularly overhauled and maintained. When the dust collector is turned on.

You first check to see if the compressed air is working. In addition to overhauling the mu dust device, the gas source and power supply should be cut off. Pi Meng.

A dust collection hood is set up in each ash place, and the dust-containing gas is transported to the dust removal device through the pipeline gas path, in which the dust is collected in the dust removal device after the gas-solid separation is carried out, and the clean gas is introduced into the main pipe or directly discharged into the whole set of equipment into the atmosphere, that is, the dust removal system, and the dust collector is an important part of the system. From the perspective of ventilation and dust removal, dust is all solid small particles that can float in the air for a long time, and is a dispersion system, called aerosol, in which air is the dispersed medium and solid particles are the dispersed phase. A dust collector is a device that separates these small solid particles from aerosols.

In the initial trial operation stage of the bag filter, we need to pay attention to these four aspects:

1.Pay attention to whether the air volume of the bag filter is consistent with the pressure and design of each detection point, and make relevant data records.

2.Observe the running direction and speed of the fan and motor of the bag filter, use the industrial thermometer to detect the temperature and vibration of the relevant bearing, and make a record of the abnormality and feedback to the manufacturer in time.

3.Dust removal filter bag installation. During the trial period, it is necessary to check whether the dust removal filter bag in the bag filter box is in place? Whether the dust removal filter bag falls off or loosens.

4.Pay attention to the dust emission of the bag filter. In the early stage, we must pay more attention to the emission of the chimney of the bag filter, whether there is white smoke discharge, and how long it lasts; At the same time, pay attention to the cleaning situation of the bag filter discharger, regularly open the observation port under the ash hopper of the bag filter, check the dust accumulation, and adjust the pulse and fan frequency in time.

During the trial operation of the new baghouse, special attention should be paid to checking the following points:

1.The direction of rotation of the fan, the rotational speed, the bearing vibration and the temperature.

2.Whether the air volume and the pressure and temperature of each test point are consistent with the design.

3.The installation of the filter bag, whether there is bag dropping, loosening, wear, etc. after use, can be judged by visual inspection of the chimney emission after it is put into operation.

4.It is necessary to pay attention to whether there is condensation in the bag room and whether the ash discharge system is unblocked. Prevent clogging and corrosion, and when the dust accumulation is serious, it will affect the production of the main machine.

5.The adjustment of the cleaning cycle and cleaning time is an important factor affecting the dust capture performance and operation status.

It is necessary to carefully study the dust properties and dust concentration, and determine the cleaning cycle and time according to different cleaning methods, and adjust them to achieve the best cleaning parameters during the trial operation.

<> dust collector plays an important role in the equipment of various manufacturers with serious dust, pulse dust collector has high-pressure air box pulse bag filter and low-pressure long bag pulse bag filter, the division efficiency is as high as above, and the dust emission concentration can be stabilized below 100mg m3, because of its advanced technology, reliable and easy maintenance, it is more and more valued by enamel enterprises. However, due to the limitations of site conditions or improper management of the distribution of ballast ears, the use of pulse bag filters has also been limited. The height of the plant is not enough Most of the pulse bag filters adopt the upper bag structure, so the kitchen is required to have a certain height.

In production, the application of dust collectors is often limited by insufficient kitchen height. When the height of the plant is only about 1m shorter than the requirement, the method of reducing the height of the ash hopper can be adopted, and the double ash hopper structure can be adopted. However, this method requires 1 screw conveyor and feeder, and the operating cost increases slightly.

When the bag space can be satisfied, the multi-stage bag cage method can be used, and the workload will increase when the bag is loaded and unpacked by this method. When the above methods still cannot meet the requirements, the roof can be penetrated, the pulse worker dust collector can be arranged in the open air, and according to the flue gas conditions, it is necessary to determine whether humidification is required, and the rainproof problem of electrical equipment should also be considered. High dust removal resistance: The filter bag has a short life, and the performance of the filter bag is directly related to the operation of the dust collector.

At present, the problems are that the resistance of the dust collector is large, the air volume of the treatment is small, and the life of the dust bag is short, which not only affects the dust removal effect, but also affects the normal production process. Therefore, when the dust is high, choose a bag filter that can handle the dust at a higher depth, so that the filtration air speed is lower, and the filter material is not less than 550g m2. In view of the situation of non-travel, taking a reasonable cleaning cycle can not only improve the efficiency of dust removal, but also prolong the service life of the filter bag.