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Method and device for purifying flue gas by utilizing photochemical Fenton reaction

A Fenton reaction and flue gas technology, applied in chemical instruments and methods, combined devices, separation methods, etc., can solve the problems of high investment, high steel consumption, huge maintenance costs, etc., and achieve the effect of less consumption and large surface area

Active Publication Date: 2014-07-30
林小晓 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the efficiency of cheap dust removal equipment is very low, usually less than 80%; good equipment such as electrostatic dust removal, although the efficiency can be as high as 99%, but it also has its fatal shortcomings: (1) The equipment is huge, consumes a lot of steel, and requires high voltage transformers. Electricity and rectification equipment, so the investment is high
(2) The dust removal efficiency is restricted by the specific resistance of the dust. Generally, the specific resistance of dust is less than 104-105 ohms per centimeter or greater than 1010-1011 ohms per centimeter. If certain measures are not taken, the dust removal efficiency will be affected. (3) Not available Off-line maintenance function, once the equipment fails, or runs with a disease, or can only be shut down for maintenance
However, the huge maintenance fee does make small and medium-sized enterprises unable to make ends meet.

Method used

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  • Method and device for purifying flue gas by utilizing photochemical Fenton reaction
  • Method and device for purifying flue gas by utilizing photochemical Fenton reaction
  • Method and device for purifying flue gas by utilizing photochemical Fenton reaction

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Embodiment 1

[0075] Embodiment 1: a kind of method utilizing light to assist Fenton reaction to purify flue gas is characterized in that comprising the following steps:

[0076] (1) Adding a solution containing Fenton’s reagent and adjusting the pH value to less than or equal to 3 by using an α-hydroxy acid in the reaction vessel, the Fenton’s reagent comprising a metal system capable of photo-assisted Fenton reaction and hydrogen peroxide;

[0077] The mass percentage of described solution configuration hydrogen peroxide and water is 5%;

[0078] The molar ratio of hydrogen peroxide to metal system is about 30:1;

[0079] (2) According to the light absorption peak of the metal system, the lighting system is set;

[0080] (3) The flue gas is passed into the reaction vessel, so that the pollutants in the flue gas fully contact and react with the Fenton reagent;

[0081] (4) The solution after the reaction is exported, and the concentration of the Fenton's reagent in the derivation solutio...

Embodiment 2

[0113] A method for purifying flue gas by light-assisted Fenton reaction, characterized in that it comprises the following steps:

[0114] (1) Adding a solution containing Fenton’s reagent and adjusting the pH value to less than or equal to 3 by using an α-hydroxy acid in the reaction vessel, the Fenton’s reagent comprising a metal system capable of photo-assisted Fenton reaction and hydrogen peroxide;

[0115] The mass percentage of described solution configuration hydrogen peroxide and water is 4%;

[0116] The molar ratio of hydrogen peroxide to metal system is 10:1;

[0117] (2) According to the light absorption peak of the metal system, the lighting system is set;

[0118] (3) The flue gas is passed into the reaction vessel, so that the pollutants in the flue gas fully contact and react with the Fenton reagent;

[0119] (4) The solution after the reaction is exported, and the concentration of the Fenton's reagent in the derivation solution is regularly monitored, and ac...

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Abstract

The invention discloses a method and a device for purifying flue gas by utilizing photochemical Fenton reaction. The method comprises the steps of converting particle powder into carbon dioxide and converting sulfur dioxide into sulfuric acid by utilizing the photochemical Fenton reaction. The device comprises a luminous energy bin and a purifying bin, so that the sulfuric acid recycling benefit of the device exceeds the running cost of the device, and users can obtain the relatively large profit. Additionally, the method is very flexible, can be accepted in existing systems of coal combustion boilers for improving the effectiveness of the coal combustion boilers, or can completely replace the original old system. The method and the device for purifying the flue gas by utilizing the photochemical Fenton reaction can be suitable for being used in any coal combustion boiler industrial market comprising cement plants, iron and steel plants, municipal government rubbish combustion plants, medical treatment rubbish combustion plants, chlorine manufacturers, paper pulp and paper production factories and the like.

Description

(1) Technical field: [0001] The invention relates to a light energy purification method and device, in particular to a method and device for purifying flue gas by utilizing light-assisted Fenton reaction. (two) background technology: [0002] In the form of China's sustained and rapid economic development, the demand for energy consumption has risen sharply; taking coal as an example, the annual increase in demand for coal since the reform and development has been about 8-12%, and the biggest problem resulting from this is serious air pollution. Pollution. [0003] China today is one of the countries with the worst air pollution in the world (after India). Not long ago, at the regular meeting of the State Council of China, the theme of "eliminating people's heart and lung problems" was specifically raised; combining pollution control with public attitudes and livelihoods, we are determined to get rid of the hat of a big polluting country. The Chinese government has decided...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/74B01D53/50B01D50/00
CPCB01D53/00B01D53/50B01D53/74B01D53/86
Inventor 傅国琳
Owner 林小晓
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