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Analyze the reason why the exhaust gas treatment equipment is blocked:

After the exhaust gas treatment equipment is used for a period of time, it will be blocked. Just like the computer will use the card after a period of time, what are the factors that form the blockage of the exhaust gas treatment equipment? Let us analyze it.

1. Target control of the desulfurization system.

  2. Heat in the liquid phase when the temperature is low.

  3. The selection of the internals of the exhaust gas treatment equipment is incorrect.

  4. No suitable desulfurizing agent was selected.

  5. The regeneration of the desulfurization solution is poor, and the sulfur content in the lean liquid is high. The regeneration is not good, the NaHS obtained by absorbing H2S in Na2CO3 in the tower is not completely oxidized to sulfur, and is collected by flotation into the foam tank, and is brought into the chemical waste gas treatment equipment, and the oxidation reaction is completed in the upper part of the tower. , the formation of elemental sulfur, and then attached to the surface of the filler, which is the main element for the formation of the block in the upper part of the chemical waste gas treatment equipment.

  6. Quality of sulfur recovery: The quality of sulfur recovery can directly reflect how much H2S is removed. Even if the desulfurization system is opened well, the sulfur can not be recovered, it must be staying in the tower, laying a danger for the tower. There is also a hypothetical return system for molten sulfur, which is an important factor in the formation of high secondary salt content.

  7. Dedusting effect of the former section: As everyone knows, the gas components entering the desulfurization system are messy, rich in impurities and dirt. Once it enters the exhaust gas treatment equipment, it is difficult to bring out, and it will be mixed with sulfur paste to wet desulfurization. Tower element analysis and countermeasures form a blockage.

The packing tower of general chemical waste gas treatment equipment is divided into three sections. It is assumed that the lowest layer packing pressure difference is large, and most of it is formed by the dust-removing effect.

  What methods should we adopt to deal with the problem of obstruction of exhaust gas treatment equipment?

  1. The components of the desulfurization liquid should be strictly controlled. The pH value, total alkalinity, Na2CO3, NaHCO3, sub-salt and suspended sulfur should be controlled within the target scale. Choose a suitable filler, depending on the amount of circulation of the desulfurization solution.

  2, to ensure the regeneration air intake and blowing strength, to ensure the regeneration, thoroughly analyze and separate the elemental sulfur flotation, go out separately.

  3. Add a rich liquid tank, a rich liquid pump and a cool water tower in the desulfurization system to ensure that the desulfurization liquid has a satisfactory regeneration time, the release time of the dissolved gas and the solution temperature in the optimal operating temperature range.

  4. Strengthen the water quality of the cooling tower and the pre-purification treatment of the semi-water gas. The industrial waste gas treatment equipment of the sewage treatment plant increases the amount of water on the gas scrubbing tower before desulfurization, and opens the electrostatic decoking to reduce the content of coal dust particles and tar substituted into the desulfurization system.

  5. Strengthen the treatment of desulfurization solution and strictly implement the skill target.

  6. Require that the regeneration tank does not continuously overflow the sulfur foam into the foam pool, and the recovered residual liquid should be settled before being used in the system.

7. Select the appropriate amount of solution circulation through skill calculation, and increase the circulation amount of the solution punctually, and successively wash the packed section of the desulfurization tower.

Above we see that industrial waste gas treatment equipment has many elements in plugging towers, but regardless of the skill is still the element of the equipment, it is related to the skill operation status of each company. After all, you should carefully look for the elements, and then the right medicine, is the best treatment.

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Analyze the reason why the exhaust gas treatment equipment is blocked

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