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A flue gas treatment system and method based on hydrogen peroxide

A flue gas treatment system, hydrogen peroxide technology, applied in the direction of gas treatment, separation methods, chemical instruments and methods, etc., can solve the problems of secondary pollution, volatilization, limited free radical generation efficiency, etc., and achieve the effect of simplifying the composition

Active Publication Date: 2018-09-14
KEYON PROCESS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The free radicals excited by the pulse voltage excitation of ammonia water mainly come from water, the generation efficiency of free radicals is limited, and the NH 3 Volatile, causing secondary pollution, has a certain risk

Method used

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  • A flue gas treatment system and method based on hydrogen peroxide

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1 discloses a preferred embodiment of the hydrogen peroxide-based flue gas treatment system of the present invention, the SO in the flue gas it treats 2 The concentration range is 100ppmV~8000ppmV, NO X The concentration range is 100ppmV~1400ppmV, and the concentration range of dust particles is 50mg / Nm 3 ~2000mg / Nm 3 .

[0043] The flue gas treatment system based on hydrogen peroxide in the present embodiment comprises absorption tower 10, and the gas inlet 11 of absorption tower 10 is positioned at the bottom of absorption tower, and gas outlet 12 is positioned at the top of absorption tower, and the gas inlet 11 of absorption tower 10 and A first shower 21 and a second shower 31 are arranged between the air outlets 12 .

[0044] The first sprayer 21 communicates with the first oxidant storage tank, and the first oxidant storage tank is a hydrogen peroxide storage tank 22, the first sprayer 21 is used to spray the first oxidant solution into the flue gas...

Embodiment 2

[0082] Embodiment 2 discloses a method for applying the flue gas treatment system based on hydrogen peroxide disclosed in Embodiment 1, including steps:

[0083] S10: Make the first oxidant solution absorb SO in the flue gas 2 and NO 2 ;

[0084] S20: Exciting the second oxidant solution to generate multiple hydroxyl radicals;

[0085] S30: NO in the flue gas reacts with hydroxyl radicals to generate HNO, which is easily soluble in the second oxidant solution 2 and NO 2 ;

[0086] S40: make the second oxidant solution absorb HNO 2 and NO 2 ;

[0087] S50: the second oxidant solution traps dust and heavy metals in the flue gas to obtain droplets;

[0088] S60: Charge the droplets carrying dust and heavy metals to form an easy-to-collect water film.

[0089] Exemplary, such as figure 1 As shown, the specific application of the specific embodiment of the flue gas treatment system based on hydrogen peroxide of the present invention is as follows:

[0090] 1. The dust co...

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Abstract

The invention discloses a flue gas treatment system and method based on hydrogen peroxide. The flue gas treatment system comprises an absorbing tower, and a first sprayer and a second sprayer are disposed in the absorbing tower. The first sprayer is communicated with a first oxidant storage tank and sprays a first oxidant solution used for absorbing SO2 and NO2 in flue gas to the flue gas. The second sprayer is communicated with a second oxidant storage tank, a discharge electrode and a dust collection electrode are arranged below the second sprayer, the second sprayer sprays a second oxidant solution to flue gas passing through the discharge electrode and the dust collection electrode, and dust and heavy metal in the flue gas are trapped. A high-voltage electric field is loaded between the discharge electrode and the dust collection electrode and used for exciting the second oxidant solution to form a large number of hydroxyl free radicals and oxidizing NO in the flue gas to form HNO2 and NO2, and finally N2 and CO2 are generated. The flue gas treatment system based on hydrogen peroxide is simple in structure, small in occupied area, capable of effectively removing SO2, NOX, dust and heavy metal particles in the flue gas and free of secondary pollution.

Description

technical field [0001] The invention relates to the technical field of flue gas purification system and method design, in particular to a flue gas treatment system and method based on hydrogen peroxide. Background technique [0002] With economic development, the dust and SO emitted from fuel combustion 2 , NO X , heavy metals and other pollutants have had a huge impact on my country's ecological environment. In recent years, problems such as smog, acid rain, and greenhouse effect have emerged continuously, and ordinary people's demands for environmental protection have become increasingly high. In this context, relevant industrial fields such as electric power, petrochemicals, steel, coal, ceramics, and metallurgy have successively released pollutant discharge standards within the industry. According to the latest release of "GB31571-2015 Petrochemical Industry Pollutant Discharge Standard", from July 1, 2015, new enterprises will 2 , NO X Emission indicators are 20, 1...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/78B01D53/79B01D53/50B01D53/56B01D53/64B01D50/00
CPCB01D50/00B01D53/507B01D53/56B01D53/64B01D53/78B01D53/79B01D2251/106B01D2258/0283Y02A50/20
Inventor 乔英杰费斌斌王小健马强
Owner KEYON PROCESS