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Desulfurization and dedusting system capable of realizing emission of clean flue gas

A dust removal system and desulfurization system technology, applied in the field of flue gas desulfurization, can solve the problems of high operating cost, increased flue gas resistance, high energy consumption, etc., and achieve the effects of high dust removal rate, reduced emissions, and good desulfurization effect

Pending Publication Date: 2018-04-27
北京亿玮坤节能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN103406010B discloses a desulfurization, denitrification and dust removal device. This technology is a spray scattering tower. The desulfurization and dust removal effects can be significantly improved through this device, but the disadvantage of this technology is that the smoke resistance is increased and the energy consumption is relatively high.
This process also has good desulfurization and dust removal effects, but the secondary adsorption purification of this process uses activated carbon as the adsorbent. This method has high operating costs and requires replacement of the adsorbent.

Method used

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  • Desulfurization and dedusting system capable of realizing emission of clean flue gas
  • Desulfurization and dedusting system capable of realizing emission of clean flue gas
  • Desulfurization and dedusting system capable of realizing emission of clean flue gas

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Embodiment

[0032] see figure 1 , the desulfurization and dust removal system for clean flue gas discharge in the illustration is a preferred embodiment of the present invention, including a desulfurization system, a flue gas washing system and a flue gas discharge system. The desulfurization system is composed of an absorption tower, a desulfurizer preparation and a circulation system; The flue gas washing system consists of a cooling scrubber and a washing water supply system. The cooling scrubber is a water spray tower; the flue gas discharge system includes a chimney, and the cleaned flue gas is finally discharged through the chimney.

[0033] In this example, magnesium flue gas desulfurization is adopted, and the specific process is as follows:

[0034] After the purchased MgO powder is matured and digested, it is sent to the desulfurizer slurry tank 1, and the produced Mg(OH) 2 The emulsion (absorbing liquid) is sent to the absorbing liquid pool at the lower part of the absorption ...

example 1

[0047] Flue gas condition: 8000Nm3 / h; SO 2 The concentration is 800mg / L; the dust concentration is 50 mg / L; the boiler flue gas temperature: 120°C.

[0048] Measured after the steps of the foregoing examples:

[0049] Temperature after absorption tower: 55°C; Temperature after low-temperature washing tower: 30°C;

[0050] After the flue gas is cleaned, the SO 2 The concentration is 1.5mg / L; the dust concentration is 0.5 mg / L.

[0051] Desulfurization efficiency: 99.8% Dust removal efficiency: 99%

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PUM

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Abstract

The invention discloses a desulfurization and dust removal system for clean emission of flue gas, which comprises a flue gas washing system and a discharge system of the desulfurization system. The desulfurization system is composed of an absorption tower, a desulfurizer preparation and a circulation system; The water supply system is composed of the cooling washing tower as a water spray tower, and the flue gas is dedusted and cooled twice in the spray tower; the flue gas discharge system includes an exhaust flue and a chimney, and the cleaned flue gas is finally discharged through the chimney. The invention has good desulfurization and dust removal effects, and can eliminate the problem of "white smoke" caused by flue gas. The invention also solves the problem of secondary pollution in the desulfurization process, and provides help for reducing and eliminating smog.

Description

technical field [0001] The invention relates to the technical field of flue gas desulfurization, in particular to a desulfurization and dust removal system for clean emission of flue gas. Background technique [0002] In recent years, with the development of economy and industry, more and more serious air pollution has seriously troubled people's lives. For this reason, the state has become more and more stringent in monitoring the discharge of industrial emissions, and the discharge standards have become more and more stringent. According to the relevant regulations on environmental protection, the emission concentration of SO2 should be lower than 100mg / m3, the emission concentration of dust particles should be lower than 30mg / m3, the emission concentration of nitrogen oxides should be lower than 100mg / m3, and the discharge of pollutants into the atmosphere must meet the standards. This requires a high degree of purification of the flue gas produced by coal power, steel, ...

Claims

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Application Information

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IPC IPC(8): B01D53/60B01D53/78B01D53/96B01D50/00
CPCB01D53/60B01D50/00B01D53/78B01D53/96B01D2251/2062B01D2251/304B01D2251/306B01D2251/402B01D2251/404B01D2251/604B01D2251/606B01D2258/0283
Inventor 刘森
Owner 北京亿玮坤节能科技有限公司
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