Progress of selective catalytic reduction denitrification catalysts at wide temperature in carbon neutralization

Dehai Lin; Longhui Zhang; Zilin Liu; Baodong Wang; Yifan Han

doi:10.3389/fchem.2022.946133

Progress of selective catalytic reduction denitrification catalysts at wide temperature in carbon neutralization

Front Chem. 2022 Aug 17:10:946133. doi: 10.3389/fchem.2022.946133. eCollection 2022.

Authors

Dehai Lin^{1

2}, Longhui Zhang¹, Zilin Liu¹, Baodong Wang¹, Yifan Han²

Affiliations

¹ National Institute of Clean and Low Carbon Energy, Beijing, China.
² College of Chemical Esngineering, Zhengzhou University, Zhengzhou, Henan, China.

Abstract

With the looming goal of carbon neutrality and increasingly stringent environmental protection policies, gas purification in coal-fired power plants is becoming more and more intense. To achieve the NOx emission standard when coal-fired power plants are operating at full load, wide-temperature denitrification catalysts that can operate for a long time in the range of 260-420°C are worthy of study. This review focuses on the research progress and deactivation mechanism of selective catalytic reduction (SCR) denitration catalysts applied to a wide temperature range. With the increasing application of SCR catalysts, it also means that a large amount of spent catalysts is generated every year due to deactivation. Therefore, it is necessary to recycle the wide temperature SCR denitration catalyst. The challenges faced by wide-temperature SCR denitration catalysts are summarized by comparing their regeneration processes. Finally, its future development is prospected.

Keywords: SCR denitration; carbon neutralization; deactivation mechanism; regeneration; wide- temperature catalyst.

Publication types

Review