Introduction of common knowledge points of roof demister
- Categories:Industry News
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- Time of issue:2020-11-25 13:51
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(Summary description)In real life, most people may not have seen a special wet desulfurization process or a mist eliminator, but those who have studied chemistry can know that a lot of water mist will occur during such desulfurization. Substances.
Introduction of common knowledge points of roof demister
(Summary description)In real life, most people may not have seen a special wet desulfurization process or a mist eliminator, but those who have studied chemistry can know that a lot of water mist will occur during such desulfurization. Substances.
- Categories:Industry News
- Author:
- Origin:
- Time of issue:2020-11-25 13:51
- Views:
Information
In real life, most people may not have seen a special wet desulfurization process or a mist eliminator, but those who have studied chemistry can know that a lot of water mist will occur during such desulfurization. Substances. These substances are not simply water points, such as fans. They are probably parts that are easily corroded, such as heat exchangers, and some flues that are prone to stains. If there are these water mists, then The parts of these examples are not complete. Due to the corrosive effect of the water mist, there are also some substances that are more turbid by themselves, so they cannot exist in the absorption tower.
If some industrial production masters with desulfurization experience, they will definitely prepare such mist eliminators in the early stage of industrial production. After all, with such rigid funding, there is no need to worry about the production environment containing these mists. This model is very expensive in terms of price, but the staff of these things still initiated the purchase, because it can be guaranteed to be rigid and not damaged by these droplets. In fact, these water mists look somewhat different The pure water vapor is not much different, but the water mist identity in the industry is not so simple. So if the water mist exists in the absorption tower, it is naturally not possible to guarantee such production matters, and it may not be affected. The progress.
Many of my friends may not know much about the roof ridge defogger. In order to meet the needs of some friends, Beiqing will share some common sense points with us on the defogger for us to learn, and can also lead us to understand the removal Fresh air brought by the mister. Roof-type mist eliminator blades, fixtures, clamps, brackets, etc. are assembled according to the structure.
Its function is to capture the droplets and a small amount of dust in the flue gas, reduce the water in the flue gas, and prevent the vibration of the fan. Roof-type mist eliminator blades are the basic and important components of the mist eliminator, and their performance has a vital impact on the operation of the entire mist eliminator. Roof-type mist eliminator blades are usually made of polymer materials or stainless steel. There are many types of roof-type mist eliminator blades. According to the geometric shape, it can be divided into broken line and streamlined. According to the structural characteristics, it can be divided into 2-channel blades and 3-channel blades.
The general arrangement of the roof ridge defogger is horizontal, herringbone, V-shaped, combined type, etc. In large-scale desulfurization absorption towers, the herringbone and V-shaped layouts are mostly used, and they are generally placed The flue gas outlet of the absorption tower.
The roof demister is used to separate the liquid droplets carried by the flue gas. In the absorption tower, it is composed of upper and lower second-level roof ridge demisters and flushing water system. After the flue gas after purification treatment, after passing through the two-stage horizontal roof-type mist eliminator, the slurry droplets carried by it are removed. The small droplets separated from the flue gas slowly condense into larger droplets, and then slide down the roof-type mist eliminator blades to the slurry pool. In the upper and lower parts of the first-stage mist eliminator and the lower part of the second-stage mist eliminator, each has a set of headers with nozzles. The cleaning water of the demister in the header flushes the solid particles deposited in the demister in turn through the nozzle. After being washed and purified, the flue gas flows out of the absorption tower, and finally discharged into the chimney through the flue gas heat exchanger and the clean flue.
1. In terms of defogging power, assuming normal operation, the flue gas concentration at the outlet of the control defogger should be below 75mg/Nm3.
2. In terms of pressure drop, assuming that the disturbance before and after the operation of the defogging dust collector is not considered, the pressure drop of the entire defogging dust collector system will be below 120Pa.
3. Pressure resistance, can withstand high temperature of 80-95℃, pressure blades with pressure below 0.3MPa can be used normally.
4. The nozzle is a full-cone nozzle, and the point of view of the water eruption is between 90-120 degrees, and all the blades can be covered.
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