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Comprehensive waste incineration flue gas purification system and purification method thereof

A flue gas purification system, waste incineration technology, applied in chemical instruments and methods, separation methods, air quality improvement and other directions, can solve problems such as catalyst failure

Active Publication Date: 2013-01-30
BEIJING SPC ENVIRONMENT PROTECTION TECH
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Problems solved by technology

The heavy metals produced by waste incineration flue gas are easy to pollute the denitrification catalyst and make the catalyst invalid

Method used

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  • Comprehensive waste incineration flue gas purification system and purification method thereof

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Embodiment Construction

[0021] In order to illustrate the embodiment of the present invention or the technical solution in the prior art more clearly, the following will clearly and completely describe the technical solution of the present invention in conjunction with the accompanying drawings of the present invention. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. Based on these embodiments, all other embodiments obtained by persons of ordinary skill in the art without paying creative efforts, All belong to the scope of the present invention.

[0022] The present invention adopts a circulating fluidized bed reactor or similar semi-dry acid removal device (1), dust removal equipment (4), heat exchanger (5), carbon-based adsorption reaction system, induced draft fan (6), chimney ( 7) Composed of waste incineration flue gas purification system, implement waste incineration flue gas purification.

[0023] Adjust the temperature of ...

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Abstract

The invention relates to waste incineration flue gas purification equipment, which comprises a semi-dry deacidification device (1), a dust removing system (4), a heat exchanger (5), a carbon base adsorption reaction system, an induced draft fan (6) and a chimney (7), wherein the carbon base adsorption reaction system comprises a carbon base adsorbent bin (8), a carbon base adsorption tower (12), a carbon base adsorbent regeneration tower (11), a conveyor belt (2) and a sifter (3). According to the purification process, acidic gases HCl, HF, SO2 and the like can be pre-removed from an incineration flue gas to prepare for a carbon base adsorption process, the pre-treated flue gas is heated to more than 85 DEG C by the heat exchanger, fed into at least one layer of carbon base adsorption reactor, and reacted with sprayed NH3 and the like to remove NOx from the incineration flue gas. Tail gases generated by waste incineration can be fully purified, and harmful substances such as acidic substances, nitrogen oxides and heavy metal can be removed from the gases.

Description

technical field [0001] The invention belongs to a tail gas treatment equipment and process thereof, in particular to a garbage incineration flue gas comprehensive purification equipment and a purification process thereof. Background technique [0002] In 2004, China's urban waste was about 190 million tons, and the amount of waste generated surpassed that of the United States to become the world's largest. It is predicted that by 2030, it will increase to 480 million tons, and the Ministry of Construction has set a goal to increase the urban waste incineration rate to 30%. As a result, a large amount of waste gas, waste residue, etc. will be generated to be disposed of. [0003] my country's waste incineration flue gas purification system basically adopts the combined flue gas treatment process of "semi-dry deacidification + activated carbon injection adsorption of dioxins + bag filter dust removal". The semi-dry flue gas deacidification technology used in China mainly inc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/75B01D53/02B01D53/68B01D53/60B01D53/64B01D53/72
CPCY02A50/20
Inventor 张开元贾双燕秦省军
Owner BEIJING SPC ENVIRONMENT PROTECTION TECH
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