A review of recent advances in selective catalytic NOx reduction reactor technologies--颗粒学报PARTICUOLOGY

Cheng, X., & Bi, X. T. (2014). A review of recent advances in selective catalytic NOx reduction reactor technologies. Particuology, 16, 1–18. https://doi.org/10.1016/j.partic.2014.01.006

A review of recent advances in selective catalytic NO_x reduction reactor technologies

Xingxing Cheng ^{a b}, Xiaotao T. Bi ^b *

a National Engineering Laboratory of Coal-Fired Pollutants Emission Reduction, School of Energy & Power Engineering, Shandong University, Jinan 250061, China
b Department of Chemical and Biological Engineering, The University of British Columbia, Vancouver V6T 1Z3, Canada

10.1016/j.partic.2014.01.006

Volume 16, October 2014, Pages 1-18

Received 17 August 2013, Revised 14 January 2014, Accepted 21 January 2014, Available online 24 April 2014.

E-mail: xbi@chbe.ubc.ca; Xbi@chml.ubc.ca

Highlights

• SCR catalysts and mechanism were briefly summarized.

• Structured, fluidized bed and moving bed reactors were reviewed.

• Multifunctional reactors coupling/decoupling reactions/adsorption were discussed.

• SCR reactor technology for emerging energy processes was also addressed.

Abstract

Research on NO_x treatment is extensive in recent years due to growing environmental awareness. Selective catalytic reduction (SCR) of NO_x, as a proven technology, offers higher NO_x control efficiency than many other NO_x treatment methods. The present work reviews the recent development of SCR reactor technologies. Firstly, catalysts and mechanism of different SCRs were briefly summarized. Different SCR reactors, e.g. structured reactor, fluidized bed reactor and moving bed reactor, were then discussed. As a more advanced technology, multifunctional reactors were also developed for SCR process and could be divided into two categories: decoupled adsorption-reaction process and combined SCR system. The mechanism and properties of these processes were discussed in detail. Some recommendations were given for the future work in SCR reactor design. SCR reactor technology for emerging energy processes was also addressed, such as oxyfuel combustion and biofuel conversion processes, which put forward new requirements for SCR technologies and also open new opportunities for advanced design of SCR reactors.

Graphical abstract

Keywords

SCR; Reactor design; NO_x control; Multi-functional reactor

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