Regarding the problem of dust removal equipment, the problem of fan dust removal

Cyclone Dust Collector:

Cyclone dust collector is a dry gas-solid separation device that uses the centrifugal force generated by the rotating dust-containing gas to separate the dust from the gas stream. When the dust-laden air flow enters the cyclone from the inlet pipe, the airflow will change from linear motion to circular motion. Dust particles with a density greater than the gas will lose their inertia force when they contact the wall and fall along the wall surface and enter the ash discharge pipe.

When the swirling descending exocyclone air reaches the cone, it moves closer to the center of the collector due to the contraction of the cone. When the air flow reaches a certain position at the lower end of the cone, it continues to flow in a spiral shape from the middle of the cyclone dust collector from the bottom to the top in the same direction of rotation. Finally, the purified gas is discharged through the exhaust pipe.

A part of the uncollected dust particles also escaped. It has a high efficiency for capturing and separating dust above 5-10 m.

Features: 1. The dust removal efficiency can reach 95%.

2. The structure is simple and the pressure loss is small.

3. Simple and convenient operation and maintenance.

4. The equipment has a long service life.

5. It occupies a small area and has low operation and maintenance costs.

Scope of application: Widely used in chemical, petroleum, metallurgy, construction, mining, machinery, textile and other industrial sectors.

Baghouse:

Bag vacuum cleaner is a new type of dust removal equipment, which has the characteristics of beautiful appearance, low noise, easy to use, light weight and high purification efficiency, and is widely used in rubber, ceramics, machinery, casting, electroplating and tanning industries to purify the air.

Contains dry fine dust. It is especially suitable for ventilation and dust removal of rubber grinding grinding machines, processing casting machine tools and other equipment.

Cartridge Dust Collector:

The filter cartridge dust collector adopts the three-state mode of filtration, ash cleaning, and static offline to avoid the phenomenon of "re-adsorption" and clean the ash thoroughly. The cartridge life is up to 2 to 3 years, reducing the cost of changing the filter element. It is suitable for iron and steel metallurgy, non-ferrous smelting, construction cement, mechanical casting, grain light industry, daily chemical industry, tobacco, industrial power station boilers.

Cyclone Dust Collector:

That is, centrifugal dust collectors, separators that we often see. The dust-laden fluid enters the separator, creating a rotational motion and the dust separates due to centrifugal force. It is often used as the pre-stage of electrostatic precipitator or bag dust removal.

Tangential cyclone dust collector: the separation particle size is larger, generally 40 microns; The dust removal efficiency is between 40-75%.

Axial flow cyclone dust collector: >5 microns; Efficiency 75-95%.

Bag filter and cartridge dust collector: the same method of filtration and dust removal, but the filter components are different. Not suitable for high temperature, humid gases. Filter cloth has temperature requirements.

The separation particle size is microns, and the efficiency is about 99%.

If you want to explain this problem clearly, it is quite complicated, because the selection of different dust collectors depends on many factors: such as working conditions, dust, site, height, dust properties, concentration, emission requirements, temperature, cost, etc.!

So it's best to choose the right dust removal equipment according to specific requirements!

Jiangyin people and environmental protection, Mr. Xiang.

Sedimentation type (cyclone type), filter type, electrostatic type.

Sedimentation is the method of reducing the exhaust velocity to let the dust fall; It simply does not meet the environmental protection requirements;

The filtration method is to filter out the dust through the medium by allowing the dusty wind to pass through it;

I only know that there are cloth bag type, filter element type, water curtain type, it seems that the cloth bag is the most commonly used, the filter type filtration effect is the best, and the water curtain is generally used in more special industries. The filter element can be made of cotton wool fiber, glass fiber or various chemical fibers through spinning (or needle punching) into filter material, and then sewn into a vertically hung filter bag, and different filter materials should be selected for different occasions. The dust collected on the filter bag is removed by deforming the bag by periodic mechanical shaking, filtered flue gas backflushing or compressed air pulse backflushing.

Dust collectors have fans, but they cannot be called fans for dust removal.

Dusting is easy to imagine, but it's not very easy to do, and as you said, I agree with the upstairs point of view: it's not feasible.

You can choose a set of bag or cyclone dust collector, the working principle is to add a device that can leave the dust between the fan and the hood, it is not difficult, but it is not good to do it if it is not professional. It is recommended that you find a regular dust removal manufacturer to try it, from the conditions you give, it will not be too expensive, bag type 2 3w, if you choose a whirlwind, it will be a lot lower.

If you want to do it yourself, you may be able to do it by checking more information, but under normal circumstances, the selection and data can only be determined on the spot, plus the dust removal is originally more experience and less theory, which is difficult for people who are not very professional.

The air volume is large, the cost is high, and the air volume is small, and the wind speed may not be enough to suck out the dust; The equipment is small, the wind speed is too large, and it is easy to wear and tear. Generally, like a whirlwind, if the design is not good, the equipment is easy to wear.

In general, all dust collection equipment can be used for pre-dusting. Pre-dust removal refers to the preliminary treatment of the dust before the dust in the air enters the dust collector, which can prevent the dust from blocking the dust collector and prolong the service life of the dust collector; On the other hand, it can also reduce the work burden of the dust collector and improve the dust removal efficiency of the dust collector. Common pre-dust removal equipment are:

1.Pre-separator: As the name suggests, the large particles of dust are separated by physical isolation, which can reduce the burden on the dust collector and slow down the blockage rate of the dust collector.

2.Wet pre-dust collector: Dust removal is carried out by means of water film, scouring, spraying, etc., and the dust is in contact with water to make it humidified and weight reduced, so as to reduce the impact of dust on the environment and reduce the wear and tear of the dust collector.

3.Electrostatic precipitator: far away from the electrostatic field, the particles in the flue gas are charged, and under the action of high-voltage direct current charge, they are absorbed to the electrodes with opposite charges, deposited on the surface of the electrodes and form filter residue for dust removal.

In short, the dust removal equipment for the purpose of pre-dust removal should consider the treatment efficiency, dust removal effect, easy cleaning and other factors of the equipment, and select the most suitable pre-dust removal equipment according to the specific dust substance and process characteristics.

There are many factors that go into choosing dust removal equipment, which can be summarized into three categories: environmental, engineering and economic.

1) Environmental factors include the location of the dust removal equipment, the available space, the surrounding conditions, the maximum allowable discharge concentration, the wastewater and solid waste that may be generated, etc.

2) Engineering factors include the characteristics of dust-containing gases, the characteristics of soot and dust removal performance and design.

3) Economic factors include basic investment (equipment costs, installation costs, engineering costs, etc.), operating costs (electricity, water and maintenance), equipment life and depreciation costs, etc.

Particulate pollutant control technology, often referred to as dust removal technology, has many types of methods and equipment, each with different performance and characteristics.

There are several solutions to solve the problem of insufficient wind power of large-scale equipment dust collector and dust removal fan:

1.Replace the fan with a higher power. This is the most common and conventional approach, but it is necessary to ensure that the equipment and systems can withstand the effects of higher wind and noise, etc.

2.Upgrade existing wind turbines. Technical improvements can be made to the existing fans, such as replacing the impeller, replacing the dead rod ruler dry swimming machine, etc., to increase the wind output of the fan.

3.Carry out air duct modifications. By changing parameters such as the shape and size of the air duct to increase the wind speed and volume, the output of the fan can be improved.

Regardless of the solution, it is necessary to consider factors such as economic costs, equipment condition, environmental requirements and operational stability to select the most suitable solution.

Fans. Surpass.

Current. It is a fan transport.

Fluid. Caused by overload. To put it simply, it transports more dusty gases than it does.

Load. This situation is generally caused by the following reasons:

1.The fan selection is inaccurate and misleading.

High temperature fans. Applied in:

Room temperature. Occasion. Due to the cold and hot state.

Air density. The difference is large, causing overload.

2.The design of the network management is unreasonable and resistant.

If it is too small, the fan will run in a non-operation.

Work area. Causes an overcurrent.

Increase. Butterfly valves. Target. Principle.

It is to increase the resistance of the network management and change the working area of the fan, thereby reducing the current of the fan.

From the above, it can be seen that the above netizens said to speed up the injection. Frequency. And.

Bag. Lengthening will not achieve the effect, and these two measures will only decrease.

Dust removal equipment. resistance, which will only increase the fan current. Heightened.

There are two ways to solve the problem: one is to increase the butterfly valve method you use, and the other is to decrease.

Motor. Rotate speed.

Both of these measures will affect your sucking.

Air. If it can be used, it can be used, and the customer is really strict, only to replace the fan.

Order corrections or restrict production or suspend production for rectification. Article 99 of the Law of the People's Republic of China on the Prevention and Control of Atmospheric Sparrow Pollution stipulates that if the dust removal facilities are not opened as required for the production and discharge of waste Zen Sui, the competent department of ecology and environment of the people at or above the county level shall order correction or restriction of production and suspension of production for rectification, and impose a fine of not less than 100,000 yuan but not more than 1 million yuan. and where the circumstances are serious, it shall be reported to the people with the right to approve for approval, and ordered to suspend business or close down.

The dust removal equipment only opens the cyclone dust removal, and the dust removal case is minor, and it will be ordered to correct or restrict production and stop production for rectification.

The causes of failure of dust collection equipment are complex.

1.The quality of the equipment itself is not good: low-quality dust collection equipment may have problems in the manufacturing process, resulting in defects in the equipment itself.

2.Unreasonable design: The design of the dust removal equipment may not be in line with the actual situation, or the design defects are serious, resulting in unstable use.

3.Poor maintenance: The use of dust removal equipment requires regular maintenance, and if the maintenance is not timely, the equipment may be damaged or malfunction.

5.Gas characteristics: Methods such as reducing gas temperature and humidity can increase the burden on equipment and lead to malfunctions.

6.Service life: The service life of the dust removal equipment is limited, and if the equipment exceeds the normal service life, there will also be failures.

To sum up, in order to ensure the normal operation of dust removal equipment, it is necessary to choose better quality equipment when purchasing equipment, and ensure the quality of regular maintenance and repair work.

There can be a variety of reasons why dust collection equipment often malfunctions, and here are some common possibilities:

Improper equipment maintenance: Dust removal equipment needs regular maintenance, such as cleaning filter bags or cartridges, replacing damaged parts, etc., if maintenance work is neglected, it will lead to unstable operation of the equipment and failure.

Unreasonable equipment design: If the characteristics of the actual application scenario are not taken into account in the design stage of the dust removal equipment, or the reasonable selection and configuration is not carried out according to the nature and concentration of pollutants, failure may occur.

Improper operation: The operation of the dust removal equipment needs to be carried out in accordance with the operation manual, for example, it is necessary to pay attention to the parameters such as air flow, pressure, temperature and other parameters during operation, if it is not operated properly, it may also lead to the failure of the equipment.

Bag or cartridge wear: Dust deposition in the bag or cartridge may cause wear and tear on the bag or cartridge, resulting in a decrease in air permeability, which in turn affects the dust collection effect.

Electrical problems: Dust collection equipment involves electrical systems, such as motors, switches, sensors, etc., and if there is a problem with the electrical system, it can also lead to equipment failure.

It is necessary to analyze the specific dust removal equipment, find out the specific cause of the failure, and take corresponding measures to repair or improve.

1) The reasons for the high running resistance may be: filter bag compaction; The pulse valve is not working or damaged; The compressed air pressure is too low; When the pulse valve is working, the poppet valve is not closed tightly; One or more poppet valves are closed. Exclusion Method:

Cleaning the filter bags and strengthening ventilation; maintenance or replacement of pulse valves; Inspect the air circuit and air compressor; Check the cleaning controller. (2) The reasons for the low running resistance may be: flue gas short circuit; Broken filter bags; Exclusion Method:

Inspect the pipeline and repair the damaged area; Inspect and replace the filter bags; (3) The pulse valve does not work for the following reasons: power failure or ash cleaning controller failure; There is debris in the pulse valve, and the air is leaking all the time; The pulse valve coil burns out; The compressed air pressure is too low; Exclusion Method:

restore power supply or repair cleaning controllers; Carefully clean the pulse valve; Replace the pulse valve coil; Inspect the air system and compressor.

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.