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Boiler dust remover, medium frequency electric furnace dust collector, electric tar precipitator, plasma exhaust gas purifier, oil fume purifier, filter, spray tower_ Hebei Shouyang environmental protection equipment Co., Ltd
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 Single dust collector for 1 ton boiler

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Single dust collector for 1 ton boiler

The structure and working principle of single dust remover for 1 ton boiler is composed of upper box, in block, hopper, ash hopper heater (users can choose according to their needs), air outlet system, package components, injection device, valve closing, plugging removal air gun and protection system,

Details:

Structure and working principle of single dust collector for 1 ton boiler

The single dust collector of 1 ton boiler is composed of upper box, in block, hopper, ash hopper heater (users can choose according to their needs), air outlet system, package components, injection device, valve closing, air gun cleaning, protection system, control system, etc. Before entering the chimney, the temperature should be detected first to judge whether the dew point of over temperature flue gas is close to it. When the temperature of black smoke is high, the automatic control system will automatically open the bypass valve. When the flue gas temperature is normal, the flue gas is evenly distributed to each dust removal unit through the diffusion device. The service life of the filter bag, the area of the dust bag is increased, and the pretreatment and air distribution facilities of the coarse dust are blocked. The coarse particles in the dust are removed first by using the inertia principle, and the ash is placed in the bag to reduce the erosion of coarse particles. The pre homogenization of dust before and after this can reduce the secondary dust and dust bag entry area in the ash storage hopper and improve the uniformity of flue gas The bag was damaged locally.

Through the above screening, inertia, adhesion, flue gas dust diffusion effect, the ash bag is trapped. Because I use small diameter bag, in normal operation, bag and boiler combustion conditions change, some of the jitter dust bag in a small range, the larger jitter particles will automatically fall into the hopper, which can extend the cleaning cycle and operation stability. Clean flue gas enters from the bag box, after the exhaust valve. In order to keep the dust bag in the vertical position, the bag will not be shaken during the dust cleaning process. As for the removal condition, the adsorption capacity of the dust bag gradually increases. After the dust is adsorbed to a certain extent, the resistance reaches a predetermined value. At this point, you need to clean it. Automatic closing valve chamber, the room is invalid, we call this off-line cleaning. When the back chamber is in the off-line state, the automatic control system starts the soot blowing system, and the whole cavity is cleaned by injection. During the injection, a large amount of clean air drives a small amount of clean flue gas into the dust collector box room in a very short period of time, producing shock wave, which makes the bag shrink sharply and tremble in a short time. As the dust is negative, it shrinks, and the dust falls into the ash hopper and circulates.

When the post injection stops, the inflation of the shrunken bag still vibrates at a high frequency. The original dust filter is absorbed into the shaking hopper and discharged from the conveying system. After the completion of the cleaning, the valve automatically opens to put the cavity into normal operation.

(1) Dust removal mechanism of single dust collector for 1 ton boiler

The main function of the single dust collector of 1 ton boiler is that when the dust containing flue gas passes through the filter bag, the ash is retained on the surface of the filter bag, and the clean flue gas is discharged through the fiber gap of the filter bag.

One ton boiler single dust collector uses knitted mat glass fiber filter material to separate dust from flue gas. Its working mechanism is the screening, inertia, adhesion and electrostatic effects of dust passing through the filter bag cloth, such as diffusion and trapping.

1) The coarse dust is removed by inertia.

2) Screening function (this is an important bag filter work)

The dust smoke passes through the filter cloth, and the adsorption filter cloth or gap between the fibers in the space between the dust on the surface of the filter cloth is separated, so-called shielding effect.

For new cloth, due to the large gap between fibers, this effect is not obvious, and the collection efficiency is low. Only after a period of time, a dust layer of thickness is established on the surface of the filter cloth, and the screening effect is remarkable. This layer of dust is called the beginning of the filter layer. After dust removal, there is still residual dust on the surface and inside of the filter cloth, that is, the primary filter layer. Therefore, in order to maintain a high collection efficiency.

For needle felt or glass fiber cloth, the felt or glass fiber filter cloth itself constitutes a thick porous filter layer, which can fully play the role of screening. The condition of the company, now flugomez media selection, requires a low initial filter layer, which is brought about by a significant reduction in the initial filter layer resistance.

2) Inertia of smoke entering bag area

Through the filter cloth fiber dust, the fiber disturbed by the flue gas flow, dust larger than 1 micron, still moves in a straight line due to the inertia of collision and catches. The larger the diameter of dust particles, the greater the inertia. After filtering, the gas velocity is high and the inertia is large. The dust larger than 1 μ m will fall automatically after hitting the fiber.

3) Diffusion

When the dust particles are less than 0.2 μ m, Brownian motion, such as the thermal movement of gas molecules, is produced due to the extremely small smoke particles, which increases the contact opportunity between the dust and the filter cloth surface, making the soot trapped. This diffusion and inertia are contrary to the filter to reduce the increase of gas flow rate and reduce the size of dust is increased.

4) Adhesion

When the smoke is close to the filter cloth, the tiny smoke and dust will flow with the air. If the radius of the smoke dust is larger than the distance from the center of the dust to the edge of the filter cloth, the smoke will be stuck together by the cloth. The clearance of small cloth, this adhesion is also significant.

5) The pre spray bag, which is designed to protect the wet air bag, will then be put into use in the wet air bag!

One ton boiler single dust collector can be widely used in coking, refractory, metallurgy, building materials, chemical industry, food, mining machinery, electronics and other industrial and mining enterprises non fibrous industrial dust removal and purification. Pulse jet bag filter has many forms, such as reverse injection, forward injection, counter injection, annular injection and so on. If the low resistance valve is used and the pressure of the injection gas source is allowed to be lower than 392kpa, it is called low pressure injection; if the high resistance valve is used and the pressure of the injection gas source is higher than 392kpa, it is called high pressure injection.

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