Analysis of the causes of the fall of the desulfurization absorption tower mist eliminator

1. The mist eliminator is seriously blocked, resulting in an increase in the weight of the mist eliminator module, and the girder cannot bear it and falls; The mist eliminator is blocked, causing the local airflow of the mist eliminator to be too fast and blown off.

2. The installation of the mist eliminator is not firm and the fastening is not good.

3. The mist eliminator blades are aging. Aging causes the strength and stiffness of the mist eliminator blades to decrease, and they are fragile and deformed. Under the impact of smoke and water flow, it collapsed and fell off.

In order to avoid the mist eliminator from falling, it is necessary to ensure that the mist eliminator is fully flushed, and at the same time, ensure that the flushing nozzle is working properly. In addition, the service life of the mist eliminator is generally not more than 5 years, and it should be replaced in time at that time.

The main reason for this drop is that it contains some water absorption, and when the water absorption reaches a certain level, it will naturally fall.

The reason for the fall off of this product may be because of the wrong size, or one of its friction powers is too large, resulting in one of its falling off.

With the continuous improvement of national environmental protection requirements, the desulfurization bypass flue has been gradually dismantled by each operating unit, and the desulfurization facilities and the main engine have been operated synchronously, and the operation rate of the desulfurization facilities has reached 100%, and the health status of the desulfurization facilities directly determines the safe operation of the main engine. In China, the desulfurization process of thermal power units with an installed capacity of more than 300MW basically adopts the limestone-gypsum wet desulfurization process. Due to the characteristics of strong medium corrosion, large solid content of SO2 absorbent liquid, and strong abrasion, the anti-corrosion control of the absorption tower as the main equipment of wet flue gas desulfurization has always been one of the key issues affecting the stable operation of the system.

This mist eliminator fell because the air was so humid that it wasn't viscous enough.

1.The reasons for setting the parameters in the first step are too much pressure power, insufficient time for one solder joint and two solder joints, insufficient length at the end of the line, wrong arc, mismatch in the setting of ignition current wire diameter, inappropriate size of the burning ball, and inappropriate ignition height.

Analysis of the reason for the fall of the desulfurization absorption tower mist eliminator This may be because the fixation inside is not fixed properly and can be taken off and the reason for the fall.

In fact, the main reason for his falling off is that their own settings are not done well.

If you want to know the specific reason for this drop, you can find out through some relevant people or do an experiment now.

There are many reasons for the desulfurization absorption tower to fall from the mist eliminator.

It is not good to know the situation, this belongs to the professional knowledge of chemistry and other aspects, so please consult a local professional for details.

If it falls, I think it should be that she should not have a stone, you have to pay attention.

1. The amount of flue gas passing through the desulfurization system and the content of SO2 in the original flue gas. When the operation mode of the desulfurization system equipment is certain, the operating conditions are stable, and there are no other influencing factors, the desulfurization efficiency will decrease when the amount of treated flue gas and the content of SO2 in the original flue gas increase. Because of the increase of inlet SO2, the amount of alkali available in the circulating slurry can be quickly consumed, resulting in the ability of the slurry droplets to absorb SO2 is weakened.

2. The nature of the flue gas of the desulfurization tower mist eliminator through the desulfurization system. 1) Dust contained in the flue gas. When the complex formed by Al3+ brought in by dust and F- brought in by flue gas reaches a certain concentration, it will be adsorbed on the surface of CaCO3 solid particles, which "seals" the activity of CaCO3, seriously slows down the dissolution rate of CaCO3, and reduces the efficiency of desulfurization mist eliminator.

2) HCl in flue gas. When the flue gas passes through the desulfurization absorption tower, almost all the HCl in the flue gas is dissolved in the absorption slurry, and because the activity of Cl- is higher than that of SO42- (hydrochloric acid is more acidic than thiolic acid), it is easier to react with CaCO3 to generate CaCl2 dissolved in water, so that the concentration of Ca2+ in the slurry increases, and due to the homoionic effect, it will inhibit the dissolution rate of CaCO3, which will cause desulfurization.

When the gas containing the mist flows through the mist eliminator at a certain speed, due to the inertial impact of the gas, the droplets collide with the corrugated plate and the liquid droplets are so large that the gravity generated by the stool itself exceeds the combined force of the rising force of the gas and the surface tension of the liquid, and the droplets are separated from the surface of the corrugated plate.

The multi-fold structure of the corrugated plate of the mist eliminator increases the chance of mist collection, and the unremoved mist is collected by the same action at the next turn, so that the action is repeated, so as to greatly improve the defogging efficiency. After the gas passes through the corrugated plate mist eliminator, it is essentially free of mist.

The flue gas passes through the curved channel of the mist eliminator, and the droplets entrained by the dust hood in the air flow are separated by the action of inertia and gravity.

After desulfurization, the flue gas flows through the mist eliminator at a certain speed, the flue gas is quickly and continuously changed in the direction of movement, due to the action of centrifugal force and inertia, the fog droplets in the flue gas hit the mist eliminator blades and collect down, and the fog droplets gather to form a water flow, due to the action of gravity, fall into the slurry pool, realize the gas-liquid separation, and make the flue gas flowing through the demist eliminator meet the requirements of defogging and discharge.

1.The SO2 content in the flue gas is too low: the SO2 content in the flue gas is too low, and when the SO2 content is too low, the SO2 in the flue gas cannot be effectively absorbed.

2.Improper type of absorbent: the desulfurization absorption tower needs to use a suitable absorbent, when the type of absorbent is inappropriate, it will not be able to effectively absorb the amount of absorbent in the flue gas

The desulfurization absorption tower needs to add enough absorbent, when the dosage is insufficient, it will not be able to effectively absorb the activity of the absorbent in the flue gas is too low: if the activity of the absorbent used in the desulfurization absorption tower is too low, it will not be able to effectively absorb the flue gas flow rate in the flue gas is too low: the flue gas flow rate of the desulfurization absorption tower directly affects the contact time of the flue gas and the absorbent, when the flue gas flow rate is too low, the contact time will be reduced, so that it can not effectively absorb the absorbent pollution in the flue gas

The absorbent is polluted by other harmful substances in the flue gas, which will reduce the activity of the absorbent, so that it cannot effectively absorb the SO2 in the flue gas.

The desulfurization absorption tower encounters low flue gas during operation, mainly due to the following reasons: firstly, the flue gas temperature is low when it enters the desulfurization absorption tower, and the low-temperature flue gas is not easy to react with the desulfurizer sprayed, resulting in the reduction of the desulfurization effect; Secondly, it may be that the concentration of the desulfurizer injected is insufficient, resulting in the chemical reaction cannot be carried out completely; In addition, when the desulfurizer is in contact with the flue gas, it takes a certain amount of time to fully mix the two, so if the contact time is insufficient, it will also affect the desulfurization effect. In addition, problems such as poor working posture and uneven distribution of desulfurizer in the desulfurization absorption tower may also lead to poor desulfurization effect.

In the desulfurization absorption tower, the low original flue gas may be mainly caused by the following original smoke factors:1Insufficient desulfurizer:

The desulfurizer added to the desulfurization absorption tower is insufficient, and the sulfur dioxide in the original flue gas cannot be fully absorbed, resulting in poor desulfurization effect. 2.Low dust concentration:

The dust concentration in the flue gas is low, and the contact area between the desulfurizer and the flue gas is insufficient, resulting in poor desulfurization effect. 3.Insufficient temperature:

Desulfurization absorption generally requires a certain temperature, and the desulfurization efficiency or Wu Yuguo in low-temperature flue gas is poor. 4.The flue gas velocity is too low:

When the desulfurization tower is operating, the flue gas velocity is too low, and the flue gas is less in contact with the desulfurizer, which is difficult to achieve the effect of removing sulfur dioxide5Equipment failure: There may be problems such as orange dust blockage and leakage in the absorption tower, resulting in abnormal flue gas flow and affecting the effect.

Summary. A desulfurization absorption tower is a common industrial equipment used to remove harmful gases such as sulfur dioxide from flue gases. The flue gas in the desulfurization absorption tower originally contains a certain concentration of sulfur dioxide, which is absorbed and converted into sulfate through contact and reaction with the absorption liquid, so as to reduce sulfur dioxide emissions.

If the flue gas raw sulfur concentration in the desulfurization absorption tower is low, the possible reasons are as follows:1The flue gas has a low original sulfur content:

The raw sulfur content in flue gas is affected by various factors such as combustion materials and combustion conditions. If the original sulphur content is inherently low, the sulphur dioxide content in the flue gas after post-treatment into the scrubber absorber will be reduced accordingly. 2.

High desulfurization efficiency: If the desulfurization efficiency of the desulfurization absorption tower is relatively high, the content of sulfur dioxide in the treated flue gas will be low. 3.

Excessive flow of absorbent liquid: If the flow rate of absorbent is too large, it will lead to insufficient contact between the flue gas and the absorbent liquid, which will affect the absorption effect of sulfur dioxide. 4.

Inappropriate absorbent formulations: Different processes and equipment require different absorbent formulations. If the absorbent is not properly formulated, it will also affect the absorption of sulfur dioxide.

Desulfurization sensitive filial piety absorption tower is a common industrial equipment used to remove harmful gases such as sulfur oxide from flue gas. The flue gas in the desulfurization absorption tower originally contains a certain concentration of sulfur dioxide, which is absorbed and converted into sulfate through contact and reaction with the absorption liquid, so as to reduce sulfur dioxide emissions. If the flue gas raw sulfur concentration in the desulfurization absorption tower is low, the possible reasons are as follows:

1.The original sulfur content of flue gas is low: the original sulfur content in flue gas is affected by various factors such as combustion materials and combustion conditions.

If the original sulphur content is inherently low, the sulphur dioxide content in the flue gas after post-treatment into the scrubber absorber will be reduced accordingly. 2.High desulfurization efficiency:

If the desulfurization efficiency of the desulfurization absorption tower is relatively high, the sulfur dioxide content in the treated flue gas will be low. 3.Excessive flow of absorbent fluid:

If the flow rate of the absorbent is too large, it will lead to insufficient contact between the flue gas and the absorbent, which will affect the absorption effect of sulfur dioxide. 4.The absorbent formula is not suitable:

Different processes and equipment require different absorbent formulations. If the absorbent is not properly formulated, it will also affect the absorption of sulfur dioxide.

Can you add, I don't quite understand it.

You need to make analysis and judgment on a case-by-case basis to determine the specific cause of the low raw sulphur content of the flue gas.

Hello dear <>

The desulfurization absorption tower is a kind of equipment used for flue gas start-up desulfurization, which uses limestone slurry to chemically react with sulfur dioxide in flue gas to convert sulfur dioxide into harmless calcium sulfate and water. There are several possible reasons for the low original flue gas of the desulfurization absorption tower: 1. The failure or blockage of the flue gas heat exchanger leads to the temperature of the original flue gas being too high or too low, which affects the desulfurization efficiency of the quiet bridge cover.

2. The limestone slurry is insufficient or the quality is unqualified, resulting in insufficient desulfurization reaction or the formation of scales. 3. The desulfurization equipment is aging or leaking, resulting in the reduction of flue gas flow or secondary pollution. Hope this helps.

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