Pilot Plant Evaluation of NOx Removal by Cobalt Ethylenediamine Solution. Issue 7 (12th May 2022)

• Record Type: Journal Article
• Authors: Yang, Jie; Yuan, Chongrui; Yang, Yiting; Zhao, Qiancheng; Jiang, Yi; Sun, Yujie; Chen, Li; Nengzi, Li-Chao; Liu, Shengyu
• Is Part Of: Chemical engineering & technology. Volume 45:Issue 7(2022)
• Page Start: 1231
• Page End: 1237
• Publication Date: 2022-05-12
• Subjects: Cobalt ethylenediamine -- NO removal -- SO2 removal; Chemical engineering -- Periodicals; Chemical processes -- Periodicals; 660.05
• DOI: 10.1002/ceat.202200039
• Languages: English
• ISSNs: 0930-7516

Abstract

Abstract: The removal of NOx by cobalt ethylenediamine solution has attracted much attention, but its reaction mechanism is still not clear. In this study, the reaction mechanism was analyzed experimentally and through practical engineering experiments for thirteen consecutive days. The results indicate that the removal of NOx by cobalt ethylenediamine solution can be divided into two steps. For industrial applications, the removal of actual flue gas NO by cobalt ethylenediamine absorbent was investigated by a gas‐liquid countercurrent and concurrent system in a glass fiber factory in Neijiang, Sichuan province in China, indicating that the average removal efficiency of NO and NOx reached 80 % and that of SO2 90 %. Abstract : The exact mechanism of cobalt ethylenediamine‐mediated NOx removal is still unclear. The removal of actual flue gas NO by cobalt ethylenediamine absorbent was examined in gas‐liquid concurrent and countercurrent reaction systems of a pilot plant to analyze the feasibility of industrial wet denitrification with cobalt ethylenediamine. High average removal efficiencies of NO, NOx, and SO2 were achieved.