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A novel integrated rotary reactor for NOx reduction by CO and air preheating: NOx removal performance and mechanism
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  • Peiliang Sun,
  • Jianjie Li,
  • Xingxing Cheng,
  • Xiangdong Li,
  • Xiaotao Bi,
  • Zhiqiang Wang
Peiliang Sun
Shandong University
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Jianjie Li
Shandong University
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Xingxing Cheng
Shandong University
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Xiangdong Li
Shandong University
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Xiaotao Bi
The University of British Columbia
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Zhiqiang Wang
Shandong University
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Abstract

A novel integrated rotary reactor for NOx reduction by CO and air preheating (iNA reactor) was proposed. NOx removal performance was investigated in a fixed-bed reactor, which was used to simulate the working conditions change in iNA reactor. Lab-synthesized Cu/FeCeOx were used as catalyst. Two different modes were tested with iNA reactor: short cycles and long cycles. Excellent NOx removal efficiencies of over 95% and 90% for short cycles and long cycles were observed in iNA reactor. Moreover, compared with the constant-temperature rotary reactor, better H2O and SO2 resistances were also found in iNA reactor. The reaction mechanism was proposed based on in-situ DRIFT study. NOx was stored as nitrates in the adsorption zone, and then decomposed rapidly by both high temperatures and CO, leading to the deep catalyst regeneration. Therefore, temperature swinging and the feed of CO were key to having high iNA reactor performance for NOx removal.

Peer review status:IN REVISION

16 Apr 2021Submitted to AIChE Journal
22 Apr 2021Assigned to Editor
22 Apr 2021Submission Checks Completed
06 May 2021Reviewer(s) Assigned
01 Jun 2021Editorial Decision: Revise Minor