Simultaneous reduction of SO2 and NOx in an entrained-flow reactor

✍ Scribed by Wuyin Wang; Qin Zhong; Zhicheng Ye; Ingemar Bjerle

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 603 KB
• Volume: 74
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(95)92664-r

✦ Synopsis

Simultaneous SOz and NO, reduction in flue gas by the dry furnace sorbent injection process was simulated with an entrained-flow reactor. Several ammonium salts as well as urea were tested. Urea was found to give the highest NO, removal efficiency. By using urea-limestone sorbent, > 90% SOa removal and > 80% NO, removal were obtained at Ca/S and N/NO, ratios both equal to 2. The DeNO, process is more temperature-sensitive than the DeSO, process, and 900°C can be chosen as the overall optimum temperature. The N,O formed was < 10 ppmv at 2 s residence time. A reductive path from NOz or NO to N, is proposed to explain the experimental results.