Modularized integrated smoke purification system and method for removing plurality of pollutants

A flue gas purification system and pollutant technology, applied in the field of flue gas purification, can solve problems such as equipment corrosion, flue gas cannot be effectively lifted, diffused, and polluted

Active Publication Date: 2013-03-20
SHANGHAI LONGKING ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the flow velocity of the flue gas at the demister exceeds the design value, the effect of the demister will be greatly reduced, or even fail. As the flue gas is brought into the chimney, the phenomenon of pure flue gas with pulp is formed. The clean flue gas with pulp at the outlet of the absorption tower is partially condensed to form liquid droplets during the discharge process. After the flue gas is discharged from the chimney mouth, it cannot be effectively lifted and diffused to the atmosphere...

Method used

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  • Modularized integrated smoke purification system and method for removing plurality of pollutants
  • Modularized integrated smoke purification system and method for removing plurality of pollutants
  • Modularized integrated smoke purification system and method for removing plurality of pollutants

Examples

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Embodiment 1

[0111] In a 300MW thermal power generation unit, the sulfur content of the coal fired is 2.4%~3.0%, and the amount of flue gas produced by the boiler is 1 million to 1.3 million Nm 3 / h,SO 2 Content 5100~6800mg / Nm 3 , the flue gas is firstly denitrated by the SCR device, and then dust is removed by the dry electrostatic precipitator ESP, bag filter or electrostatic bag filter. The flue gas enters the absorption tower 1 from the flue gas inlet 9 through the flue gas channel 18, and the inlet temperature It is 115°C~145°C. After the flue gas enters the absorption tower 1, it is sprayed and absorbed, and the spray device 11 sprays out the absorbent slurry to absorb the SO in the flue gas. 2 and few SO 3 Absorb dust, metal oxides (mercury, etc.), fine particulate matter (PM) in the flue gas 2.5 / PM 10 ) and so on for wet conditioning and preliminary absorption, the water vapor in the flue gas reaches saturation, and the flue gas conditioning and conditioning are carried out f...

Embodiment 2

[0113] In the 660MW thermal power generation unit, the sulfur content of coal combustion is 2.0%~2.4%, and the flue gas volume produced by the boiler is 1.90~2.2 million Nm 3 / h, SO 2 Content 10400~15500mg / Nm 3 , the flue gas is firstly denitrated by the SCR device, and then dust is removed by the dry electrostatic precipitator ESP, bag filter or electrostatic bag filter. The flue gas enters the absorption tower 1 from the flue gas inlet 9 through the flue gas channel 18, and the inlet temperature It is 120°C~155°C. After the flue gas enters the absorption tower 1, it is sprayed and absorbed, and the spray device 11 sprays out the absorbent slurry to absorb the SO in the flue gas. 2 and few SO 3 Absorb dust, metal oxides (mercury, etc.), fine particulate matter (PM) in the flue gas 2.5 / PM 10 ) and so on for wet conditioning and preliminary absorption, the water vapor in the flue gas reaches saturation, and the flue gas conditioning and conditioning are carried out for th...

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Abstract

The invention discloses a modularized integrated smoke purification system and method for removing a plurality of pollutants. The system comprises an absorption tower, wherein a smoke inlet is arranged in the lower end of the absorption tower; the absorption tower is internally provided with a spraying device which is located above the smoke inlet and is used for spraying an absorbent, a first wet-type electric precipitation device located above the spraying device, and a second wet-type electric precipitation device located above the outer side of the absorption tower; and a smoke uniform distributor is arranged between the first wet-type electric precipitation device and the second wet-type electric precipitation device. The invention further discloses a method for carrying out smoke purification by using the system; the pollutants existing in an aerosol form, including SO2, NOX, superfine smoke dust, SO3 acid fog, mercury and the like in the smoke, can be intensively removed; gypsum rain is prevented and an environment is protected; and the smoke purification efficiency is improved.

Description

technical field [0001] The invention belongs to the field of flue gas purification, and in particular relates to a modularized integrated flue gas purification system for removing various pollutants and a method thereof. Background technique [0002] In recent years, with the improvement of people's living standards, the country has paid more and more attention to environmental protection. 2 , NO X In addition to taking effective control measures for dust and smoke, fine smoke, SO 3 The emission reduction of acid mist, mercury and other pollutants in the form of aerosols has been put on the agenda. The "National Environmental Protection "Twelfth Five-Year" Plan" was released. The plan pointed out that during the "Twelfth Five-Year Plan" period, ozone, PM 2.5 monitoring of pollutants. [0003] According to the latest "Emission Standards of Air Pollutants for Thermal Power Plants" promulgated and implemented by the state, the state will put forward higher requirements for ...

Claims

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Application Information

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IPC IPC(8): B01D50/00B01D53/75B01D53/18
Inventor 高继贤杨春琪阎冬李静洪小松
Owner SHANGHAI LONGKING ENVIRONMENTAL PROTECTION
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