Flue gas denitrification device of coal-fired boiler

A coal-fired boiler and denitration technology, applied in the field of flue gas denitration equipment and coal-fired boiler flue gas denitration device, can solve problems such as hazards, and achieve the effects of reducing environmental pollution, low energy consumption, and long service life

Inactive Publication Date: 2017-12-19
无锡市曜通环保机械有限公司
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  • Application Information

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Problems solved by technology

With the continuous development of industry, the harm caused by atmospheric compound pollutants to the environment is becoming more and more serious. The existing technology for removing compound pollutants in flue ga

Method used

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  • Flue gas denitrification device of coal-fired boiler
  • Flue gas denitrification device of coal-fired boiler
  • Flue gas denitrification device of coal-fired boiler

Examples

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Example Embodiment

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] like figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11As shown, the present invention is a coal-fired boiler flue gas denitrification device, comprising a coal-fired boiler 1, a bag filter 2, a fan 3, an SCR reactor 4, an ammonia gasifier 8, and a wet electrostatic precipitator 6, characterized in that : the coal-fired boiler 1 is connected to the bag filter 2, the fan 3, the SCR reactor 4, the ammonia gasifier 8, and the wet electrostatic precipitator 6 through pipelines, and a catalyst layer 5 is arranged in the middle of the SCR reactor 4, and the SCR reaction The upper part of the device 4 is connected with the ammonia / air mixer 9, and the ammonia / air mixer 9 is connected with the diluted ammonia blower 7 one way, and the other way is connected with the outlet of the amm...

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Abstract

The invention discloses a flue gas denitrification device of a coal-fired boiler. The flue gas denitrification device comprises a coal-fired boiler, a bag-type dust collector, a fan, an SCR reactor, an ammonia vaporizer and a wet electric precipitator, and is characterized in that the coal-fired boiler is with the bag-type dust collector, the fan, the SCR reactor, the ammonia vaporizer and the wet electric precipitator through pipelines; a catalyst layer is arranged in the middle of the SCR reactor; the upper part of the SCR reactor is connected with an ammonia/air mixer; one path of the ammonia/air mixer is connected with an ammonia diluting fan; the other path of the ammonia/air mixer and an ammonia buffer slot outlet are connected with the ammonia vaporizer. The flue gas denitrification device can remove pollutants, such as NOx, mercury, dioxin and flue dust, in flue gas of the coal-fired boiler, the removal efficiency of fine particles and aerosol in the flue gas through the wet electric precipitator is 99 to 99.99 percent, and efficient removal of combined pollutants, such as fine dust particles and SO3 acid mist, in the flue gas is realized; up-to-standard discharge of the flue gas is realized, and environmental pollution is reduced.

Description

technical field [0001] The invention relates to a flue gas denitrification device, in particular to a coal-fired boiler flue gas denitrification device, which belongs to the technical field of environmental protection. Background technique [0002] At present, for the treatment of flue gas from coal-fired boilers, the denitrification process mainly uses ammonia water as a reducing agent to react with nitrogen oxides in the flue gas; the above method has many disadvantages: [0003] (1) The denitrification process mainly uses ammonia water as a reducing agent to react with nitrogen oxides in flue gas; its disadvantage is that ammonia water and liquid ammonia are dangerous goods and are not convenient for transportation and storage. [0004] The traditional flue gas denitrification device has a certain effect on the removal of NOx in the flue gas, but it has a certain effect on fine dust, SO 3 The removal efficiency of complex pollutants such as acid mist is very low; [000...

Claims

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Application Information

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IPC IPC(8): B01D46/02B01D53/86B03C3/017B03C3/16
CPCB01D46/02B01D53/8625B01D2257/2064B01D2257/302B01D2257/60B01D2258/0283B03C3/017B03C3/16Y02A50/2351Y02C20/10
Inventor 戴顺国
Owner 无锡市曜通环保机械有限公司
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