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CADRE SURFACE SPRAYING MATERIALS

CADRE HARD SURFACE TECHNOLOGY

EFFECTIVE AND ENVERONMENTAL PROTECTION FGD MIST ELIMINATIOR
 
Flue gas desulphurization—FGD
Mist leiminator principle of work
The design idea of mist eliminator
The main body design of mist eliminator
The design of the flushing system
Every performance of the Mist Eliminator

CCDF-CRYSTAL DIAMOND FIXTURE AND EQUIPMENTS

HIGH STRENGTH AND CONDUCT ANTI-HEAT COPPER ALLOYS SPECIAL FOR CASTING CRSTALLIZATION DEVICE DEVICE、ELECTRODE、NOZZLE、CONDUCTIVE MOUTH,ETC.
 

The science and technology project achievement of Zhejiang SAT Patent porduct

First-class Design    Plendging Service      International Standard     Import substitution   

 

The main body design of mist eliminator

 

  The defogging efficiency is one of the most important targets in checking mist eliminator performances.The flue gas “dives the channel”, the flue gas speed of flow, the flue gas bias, the corrugated plate structure, the spacing, the mist eliminator arrangement form and so on can affect the defogging efficiency.It is the usual request that the mean value of droplet content in the time and the spatial scope is smaller than 75mg/ Nm3  after the mist eliminator (droplet particle size is bigger than 15μm).

 

  The pressure drop is refers to the flue gas to pass the mist eliminator before and after differential pressure.The pressure drop is bigger, the energy consumption is higher. Not only pressure drop size and factors and so on flue gas  speed of flow, corrugated plate structure, spacing, flue gas  including water load related, moreover and on mist eliminator corrugated plate scaling condition close correlation.When the scaling serious system pressure drop can enhance obviously, therefore may the brace grasp the running status of system effectively through the monitor pressure drop change, achieving to find the problem promptly, prompt processing.The pressure drop of WFGD system mist eliminator is requested to be smaller than generally 0.2KPa.

 

  The flue gas speed of flow excessively is high (surpasses critical flue gas speed) easy to produce the droplet two times to smuggle, causes the defogging efficiency to reduce, and causes the pressure drop markup, The energy consumption increases. The flue gas speed of flow excessively is low  disadvantageous to the gas spray separation, also can reduce the defogging efficiency, moreover can cause the absorption tower plan area to increase aggravates the investment cost.Therefore for achieves the good defogging effect to the mist speed of flow controlled in the appropriate scope. Usual design flue gas speed of flow in  3.5~5.5m/s.

 

  The corrugated plate spacing oversized flue gas changes becoming slower, but causes the droplet to improve easy to air current adhering to flow out the mist eliminator channel, reduced the defogging efficiency. The corrugated plate spacing excessively is small then the pressure drop increases, the flushing effect variations, the corrugated plate easy to jam.The most commonly used mist eliminator corrugated plate spacing is 20~50mm.

 

  Mist eliminator progression is closely related with the defogging efficiency and the pressure drop.The progression increase and the defogging efficiency enhances ,the pressure drop also to increase, the energy consumption and the cost all increase. Otherwise then the pressure drop reduces and the defogging efficiency to reduce.Therefore, the mist eliminator progression design must overall evaluation factors defogging efficiency, pressure drop, space, cost  and so on.At present the majority WFGD system all uses two level of defogging structures.

 

        

The installing scene of the 300MW unit WFGD system

 

  CNSM's patent product---Mist eliminator corrugated plate

 

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