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Flue gas decarburization and denitrification treatment system and method thereof

A technology for processing system and flue gas, which is applied in the field of flue gas purification, and can solve the problems such as the difficulty of perfect matching between decarbonization and denitrification

Active Publication Date: 2021-02-26
ZHONGYE-CHANGTIAN INT ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to fluctuations in actual working conditions and the nature of the catalyst itself, it is difficult to perfectly match decarburization and denitrification during project operation.

Method used

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  • Flue gas decarburization and denitrification treatment system and method thereof
  • Flue gas decarburization and denitrification treatment system and method thereof
  • Flue gas decarburization and denitrification treatment system and method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0122] Such as Figure 1-3 As shown, a flue gas decarbonization and denitration treatment system includes a CO reactor 1 and an SCR reactor 2 . According to the direction of the flue gas, the flue gas inlet pipe 9 is connected with the inlet of the CO reactor 1 . The exhaust port of the CO reactor 1 is connected with the gas inlet port of the SCR reactor 2 through a first pipeline L1. The exhaust port of the SCR reactor 2 is connected with a flue gas exhaust pipe 10 . The flue gas inlet pipe 9 is provided with a first heating device 5 , and the first pipe L1 is provided with a second heating device 6 .

Embodiment 2

[0124] Example 1 was repeated except that the system also included GGH heat exchanger 4 . The GGH heat exchanger 4 is connected to the flue gas inlet pipe 9 and the flue gas exhaust pipe 10 respectively. The flue gas transported through the flue gas inlet pipe 9 is transported to the gas inlet of the CO reactor 1 after heat exchange by the GGH heat exchanger 4 . The clean flue gas discharged from the SCR reactor 2 is then discharged through the flue gas exhaust pipe 10 after being heat-exchanged by the GGH heat exchanger 4. The first heating device 5 is located at the GGH heat exchanger 4 and is connected to the flue gas inlet pipe 9. downstream of the location.

Embodiment 3

[0126] Repeat Example 2, except that the CO reactor 1 is provided with two CO catalytic oxidation layers 101 . The SCR reactor 2 is provided with two SCR denitrification layers 201 .

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PUM

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Abstract

The invention discloses a flue gas decarburization and denitration treatment system and a method thereof. The system comprises a CO reactor and an SCR reactor. A flue gas inlet pipe is connected witha gas inlet of the CO reactor according to the trend of the flue gas. An exhaust port of the CO reactor is connected with a gas inlet of the SCR reactor through a first pipeline. The exhaust port of the SCR reactor is connected with a flue gas exhaust pipe. A first heating device is arranged on the flue gas inlet pipe, and a second heating device is arranged on the first pipeline. According to thescheme, organic combination is achieved when CO catalytic oxidation removal cooperates with SCR denitration, it can be guaranteed that a CO catalyst and a SCR catalyst are in an efficient catalytic working state for a long time, meanwhile, system heat is fully utilized, and unnecessary energy consumption is avoided. The reaction temperature of the system can be accurately regulated, the catalystis protected, and stable and efficient operation of the system is guaranteed.

Description

technical field [0001] The invention relates to flue gas treatment equipment technology, in particular to a flue gas decarbonization and denitrification treatment system and method, and belongs to the technical field of flue gas purification. Background technique [0002] The ultra-low emission transformation of the thermal power industry has been basically completed, and the non-electric field will focus on the ultra-low emission transformation of steel sintering flue gas. The dedusting and desulfurization process of sintering flue gas is relatively mature. The focus and difficulty of ultra-low emissions is denitrification. This is due to the low temperature of sintering flue gas. The medium and high temperature (200℃~350℃) SCR technology widely used in thermal power industry is applied to During the denitrification of sintering flue gas, the flue gas needs to be heated up, and a large amount of flue gas heating will bring huge energy consumption. [0003] The sintering fl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/75B01D53/76B01D53/86F23J15/08F23G7/07
CPCB01D53/75B01D53/8628B01D53/8631B01D53/864B01D53/76F23J15/08F23G7/07B01D2258/0283B01D2251/2062
Inventor 叶恒棣康建刚魏进超李俊杰
Owner ZHONGYE-CHANGTIAN INT ENG CO LTD