PERFORMANCE WITH RESPECT TO FLUE GAS COMPOSITION OF A COMBINED DESULFURIZATION/DENITRATION PROCESS USING POWDER-PARTICLE FLUIDIZED BED

• 来源期刊: 中国化学工程学报(英文版)
• 学科: 地球科学
• 关键词: 脚印
• 年，卷（期）: 1999,（4）
• 页码范围: 17-28
• 页数: 12页
• 分类号: X701
• 语种: 中文

摘要

<正> A new combined desulfurization/denitration(DeSOx/DeNOx) process was tested in thisstudy.The process uses the so-called powder-particle fluidized bed(PPFB) as the major reactorin which a coarse DeNOx catalyst,several hundred micrometers in size,is fluidized by flue gasas the fluidization medium particles,while a continuously supplied fine DeSOx sorbent,several totens of micrometers in diameter,is entrained with the fiue gas.Ammonia for NOx reduction is fedto the bottom of the bed,thus,SOx and NOx are simultaneously removed in the single reactor.By adopting a model gas,SO2-NO-H2O-N2-air,to simulate actual flue gas in a laboratory-scalePPFB,simultaneous SO2 and NO removals were0explored with respect to various gas components offlue gas.It was found that the variations of SO2 removal with concentrations(fractions)of oxygen,water vapor,SO2 and NO in flue gas are little affected by the simultaneous NOx reduction.However,the dependencies of NO removal upon such gas components are closely related