Flue gas denitration technology

SCR and SNCR flue gas denitration technology

 

Overview

 

There are two main technologies for flue gas denitration technology, selective catalytic reduction (SCR) and selective non-catalytic reduction (SNCR). Under special conditions, SCR+SNCR combined denitration can also be used. Due to its high denitration efficiency and stable performance, the SCR process accounts for more than 90% of the market share. SCR technology is used in most large units and pulverized coal furnaces. SNCR technology has low denitrification efficiency and is mainly used in circulating fluidized bed boilers or small boilers. SCR technology uses liquid ammonia, ammonia or urea as reducing agent to reduce nitrogen oxides in flue gas to nitrogen and water under the action of catalyst. SCR has mature technology, high denitration efficiency, stable operation, no secondary pollution, etc. Features: When the denitration efficiency requirement exceeds 70%, SCR technology is usually used. The denitration efficiency of SCR technology can reach more than 90%.

 

Technical advantage and technical level

 

The technical team of our company has the experience of total package of denitration devices, and fully masters the core technologies of SCR and SNCR. The master technologies include liquid ammonia gasification (urea or ammonia gasification) technology, gas ammonia distribution and mixing technology. Smoke flow field thermal field and chemical reaction dynamic analysis technology, ammonia escape control technology, catalyst selection technology for special working conditions flue gas, personalized old unit transformation technology, spray gun positioning and targeted injection technology.

 

 

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