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Method and device for purifying dust-containing flue gas

A technology for flue gas and dust, applied in the field of purifying flue gas containing dust, can solve the problems of small and medium-sized enterprises, such as making ends meet, impact of dust removal efficiency, and operation with diseases

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%. Although the efficiency of good equipment such as electrostatic dust removal can be as high as 99%, it also has its fatal disadvantages: (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 dust whose specific resistance is less than 104-105 ohms per centimeter or greater than 1010-1011 ohms per centimeter will be affected if certain measures are not taken.
(3) It does not have the function of off-line inspection and maintenance. Once the equipment fails, or runs with a disease, or can only be shut down for inspection and 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 dust-containing flue gas
  • Method and device for purifying dust-containing flue gas
  • Method and device for purifying dust-containing flue gas

Examples

Experimental program
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Embodiment 1

[0070] Embodiment 1: a kind of method for processing the flue gas that contains dust, it is characterized in that comprising the following steps:

[0071] (1) add water in the pretreatment container;

[0072] (2) 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;

[0073] The mass percentage of described solution configuration hydrogen peroxide and water is 5%;

[0074] The molar ratio of hydrogen peroxide to metal system is about 30:1;

[0075] (3) According to the light absorption peak of the metal system, an illumination system is set in the reaction vessel;

[0076] (4) Pass the exhaust gas into the pretreatment container, fully contact with the liquid, so that the solid particles with a diameter greater than 10 microns remain in the liquid;

[0077] (5) Leading...

Embodiment 2

[0122] A method for treating flue gas containing dust, characterized in that it comprises the following steps:

[0123] (1) add water in the pretreatment container;

[0124] (2) 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;

[0125] The mass percentage of described solution configuration hydrogen peroxide and water is 4%;

[0126] The molar ratio of hydrogen peroxide to metal system is 10:1;

[0127] (3) According to the light absorption peak of the metal system, an illumination system is set in the reaction vessel;

[0128] (4) Pass the exhaust gas into the pretreatment container, fully contact with the liquid, so that the solid particles with a diameter greater than 10 microns remain in the liquid;

[0129] (5) Leading the liquid containing solid particles wi...

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Abstract

The invention discloses a method and a device for purifying dust-containing flue gas. The method comprises a washing process and an oxidation / catalytic reaction process; the device comprises a pretreatment bin and an optical energy bin, wherein the pretreatment bin has the capability of removing PM10, and the optical energy bin is a PM2.5 removing device. Under the condition that additional charges are not needed, the method and the device can achieve the purpose of removing the PM10 and the PM2.5; the method is a most economical and effective PM removing method nowadays.

Description

(1) Technical field: [0001] The invention relates to a purification method and device, in particular to a method and device for purifying flue gas containing dust. (two) background technology: [0002] The impact of PM2.5 on health has aroused widespread concern nowadays. What is particulate matter 2.5 (PM2.5)? They refer to small pieces of solid or liquid matter less than 2.5 microns in diameter bound together in the Earth's atmosphere. Particulate matter compositions can cause noticeable visual effects such as smoke, which consists of sulfur dioxide, nitrogen oxides, carbon monoxide, mineral dust, organic matter and elemental carbon, also known as black carbon or soot. The particles are hygroscopic due to the presence of sulfur, and SO 2 Will convert to sulfuric acid at high humidity and low temperature. This will result in reduced visibility, yellow air, ozone and a stinging inhalation sensation. The effects of inhaled particulate matter in humans and animals have be...

Claims

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Application Information

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IPC IPC(8): B01D50/00B01D53/86B01D53/74B01D53/72
CPCB01D50/00B01D53/72B01D53/74B01D53/86
Inventor 傅国琳
Owner 林小晓
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