Gas-fired boiler low temperature plasma flue gas denitration method and device

Abstract

The invention provides a gas-fired boiler low temperature plasma flue gas denitration method and device. The denitration device comprises a low temperature plasma reaction section, an adsorption drying section, a flue gas inlet section and a flue gas outlet section, and the low temperature plasma reaction section is arranged below the adsorption drying section. The invention also provides the gas-fired boiler low temperature plasma flue gas denitration method completed by using the denitration device. The gas-fired boiler low temperature plasma flue gas denitration method and the device have the advantages of direct decomposition of NOX into N2, no secondary pollution products, low reaction temperature, no flue gas heating, stability and safety in running, small occupied area, and low investment cost.

Description

technical field [0001] The invention relates to a denitrification method and device, in particular to a gas boiler low-temperature plasma flue gas denitrification method and device, belonging to the technical field of flue gas denitrification. Background technique [0002] With the rapid development of modern industry, nitrogen oxides (NO X ) The problem of air pollution caused by the X Emission limits are becoming increasingly stringent. [0003] At present, the existing gas-fired industrial boilers in my country must undergo flue gas denitrification transformation, NO X emissions to meet the emission standards. Existing heating gas boilers have the characteristics of large load changes, low flue gas discharge temperature, and small capacity, and can be used for flue gas denitrification technologies in large coal-fired power plants, such as commercial SCR technology (Selective Catalytic Reduction, Selective Catalytic Reduction, SCR , the principle is that, under the act...

AI Technical Summary

Problems solved by technology

Existing heating gas boilers have the characteristics of large load changes, low flue gas discharge temperature, and small capacity, and can be used for flue gas denitrification technologies in large coal-fired power plants, such as commercial SCR technology (Selective Catalytic Reduction, Selective Catalytic Reduction, SCR , the principle is that, under the action of the catalyst, the reducing agent NH 3 Selectively convert NO and NO at 290°C-400°C 2 reduced to N 2 , while NH hardly occurs 3 with O 2 oxidation reaction, thereby increasing the N 2 selectivity, reducing the NH 3 Consumption), has the characteristics of stable load, high catalyst temperature, large capacity, large investment, etc.), but it is not suitable for small-capacity heating gas boilers

[0004] Lack of efficient, safe and compact denitrification technology and products for small-capacity heating gas boilers

Images