Cyclone furnace denitration system and method

Abstract

The invention provides a cyclone furnace denitration system and method. The cyclone furnace denitration system comprises a cyclone cylinder combustor and a reducing agent storage tank which are connected with the cyclone furnace; an SNCR first nozzle is arranged at the upper part of a hearth of the cyclone furnace, and an SNCR second nozzle is arranged in the top of a hearth flue; the axial direction of the cyclone cylinder combustor is vertically mounted on the outer side wall of the lower part of the hearth of the cyclone furnace, the side wall of the cyclone cylinder combustor is provided with an amino reducing agent first nozzle, and an amino reducing agent second nozzle is arranged on the side wall of the hearth above the cyclone cylinder combustor; a primary air inlet is formed in the axial direction of the cyclone cylinder combustor, and a secondary air inlet is oppositely arranged in the tangential direction of the side wall; the reducing agent storage tank is correspondingly connected with the SNCR first nozzle, the SNCR second nozzle, the amino reducing agent first nozzle and the amino reducing agent second nozzle through a reducing agent conveying pipe. The cyclone furnace denitration system and method has the advantages that the process flow is simple, the storage and conveying equipment of the SNCR denitration reducing agent is fully utilized, a new reducing agentstorage and conveying device does not need to be added, so that a new combined denitration system is formed, and the low emission of NOx of the cyclone furnace is realized.

Description

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AI Technical Summary

Benefits of technology

This patented innovative nitridification technique involves combining two technologies - one called selective catalytic reducer (SCR) and another called ammoniating chemical reaction (SNCR). By utilizing this combination, it allows for effective control over emissions from various sources such as coal fired power plants without requiring expensive modifications like those previously mentioned. Additionally, by implementing these techniques separately within each specific location, there may also improve overall performance while minimizing costs associated with installation.

Problems solved by technology

This technical problem addressed by this patented describes how liquids from different sources contribute towards harmful emissions during the use of high-boiling (HB) coal in cyclones used for power generation. Cyclones require frequent cleanings because they tend to accumulate ash and slags onto their walls causing damage. Current methods like nitric acid injection cannot effectively remove these deposits without damaging the components inside the cycling machine itself.

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