catalytic reduction
Recently Published Documents





2022 ◽  
Vol 277 ◽  
pp. 125519
Ana Caroline Reis Meira ◽  
Bruna Ghellere Tremarin ◽  
Ana Cristina Trindade Cursino ◽  
Rodrigo Leonardo de Oliveira Basso ◽  
Alesandro Bail ◽  

Atmosphere ◽  
2022 ◽  
Vol 13 (1) ◽  
pp. 121
Ji-Hyeon Kim ◽  
Jin-Ho Kim ◽  
Hyo-Sik Kim ◽  
Hyun-Ji Kim ◽  
Suk-Hwan Kang ◽  

As climates change around the world, concern regarding environmental pollutants emitted into the atmosphere is increasing. The cement industry consistently produces more than 4000 million metric tons of cement per year. However, the problem of air pollutants being emitted from the calcination process is becoming more critical because their amount increases proportionally with cement production. Each country has established regulatory standards for pollutant emission. Accordingly, the cement industry is equipped with facilities to reduce air pollutants, one of which is the NOx removal process. NOx reduction processes under combustion conditions are modified to minimize NOx generation, and the generated NOx is removed through post-treatment. In terms of NOx removal efficiency, the post-treatment process effectively changes the combustion conditions during calcination. Selective non-catalytic reduction (SNCR) and selective catalytic reduction (SCR) processes are post-treatment environmental facilities for NOx reduction. Accordingly, considering the stringent NOx emission standards in the cement industry, SNCR is essential, and SCR is selectively applied. Therefore, this paper introduces nitrogen oxide among air pollutants emitted from the South Korean cement industry and summarizes the technologies adapted to mitigate the emission of NOx by cement companies in South Korea.

Yali Liu ◽  
Hongliang Dong ◽  
Haowei Huang ◽  
Wei Zong ◽  
Yue-E Miao ◽  

Sign in / Sign up

Export Citation Format

Share Document