Spray bubbling method all-in-one synergetic desulfurization, denitration, demercuration absorption liquid

A technology of absorbing liquid and bubbling method, applied in the field of absorbing liquid

Inactive Publication Date: 2008-11-26
BEIJING BOOTES ELECTRIC POWER SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, no SO in coal-fired flue gas 2 , NOx and elemental zero-valent mercury

Method used

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  • Spray bubbling method all-in-one synergetic desulfurization, denitration, demercuration absorption liquid
  • Spray bubbling method all-in-one synergetic desulfurization, denitration, demercuration absorption liquid
  • Spray bubbling method all-in-one synergetic desulfurization, denitration, demercuration absorption liquid

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Experimental program
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Embodiment 1

[0032] The integrated synergistic desulfurization, denitrification, and mercury removal absorption liquid of the present invention includes a limestone slurry with a mass concentration of 5%, and KMnO is added to the limestone slurry 4 , its addition is 0.02% of the limestone slurry mass, the technical scheme described in this embodiment can make the flue gas desulfurization efficiency reach more than 60%, the denitrification efficiency reaches more than 30%, and the elemental zero-valent mercury Hg 0 The removal efficiency can reach more than 40%.

Embodiment 2

[0034] The integrated synergistic desulfurization, denitrification, and mercury removal absorption liquid of the present invention includes a limestone slurry with a mass concentration of 10%, and KMnO is added to the limestone slurry 4 , its addition is 0.05% of the limestone slurry mass, the technical scheme described in this embodiment can make the flue gas desulfurization efficiency reach more than 70%, the denitrification efficiency reaches more than 40%, and the elemental zero-valent mercury Hg 0 The removal efficiency can reach more than 50%.

Embodiment 3

[0036] The integrated synergistic desulfurization, denitrification, and mercury removal absorption liquid of the present invention includes a limestone slurry with a mass concentration of 15%, and KMnO is added to the limestone slurry 4 , its addition is 0.10% of the limestone slurry mass, the technical scheme described in this embodiment can make the flue gas desulfurization efficiency reach more than 80%, the denitrification efficiency reaches more than 50%, and the elemental zero-valent mercury Hg 0 The removal efficiency can reach more than 60%.

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Abstract

The invention relates to an absorption liquid which is used for desulfurization, denitration and demercuration integrated and coordinated in a jet bubbling method, and comprises limestone slurry with the mass concentration of 5 percent to 30 percent. Furthermore, a strong oxidizer is added into the limestone slurry.

Description

technical field [0001] The invention relates to an absorbing liquid for purifying coal-fired flue gas, in particular to the absorbing liquid used for flue gas desulfurization, denitrification and mercury removal by jet bubbling. Background technique [0002] At present, the emission control of coal-fired flue gas pollutants has been paid attention to by countries all over the world, among which SO 2 , NOx has industrialized equipment to remove it, and the removal control of heavy metal Hg is still under study. Conventional limestone-gypsum wet flue gas desulfurization technology uses limestone as absorbent to remove SO from flue gas 2 gas, while for NOx and elemental mercury Hg in flue gas 0 powerless. The main component of NOx is NO, which accounts for more than 90% of NOx. The removal methods include reduction and oxidation. The reduction method is to use a reducing agent to reduce it to N 2 , the oxidation method is to oxidize it to NO 2 , and then absorbed by absor...

Claims

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Application Information

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IPC IPC(8): B01D53/80B01D53/60B01D53/64
Inventor 李永旺吴树志白云峰
Owner BEIJING BOOTES ELECTRIC POWER SCI & TECH
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