| 脱硝系统新型涡流喷氨混合装置流场数值模拟 |
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| 引用本文： | 罗俊杰,宋文吉,陈金发,黎涛,于亮,冯自平.脱硝系统新型涡流喷氨混合装置流场数值模拟[J].热力发电,2011,40(11). |
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| 作者姓名： | 罗俊杰 宋文吉 陈金发 黎涛 于亮 冯自平 |
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| 作者单位： | 中国科学院广州能源研究所,广东广州,510640 |
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| 摘 要： | SCR脱硝系统的性能取决于进入脱硝反应器的氮氧化物与还原剂氨气混合的均匀程度和烟气速度分布。提出了一种新型的涡流喷氨混合装置,并对其流场进行了三维数值模拟。分析表明,涡流喷氨混合装置能够使进入第1层催化剂的烟气与氨气均匀混合,催化剂入口截面氨气浓度偏差小于10%,混合效果良好;在2个烟道转弯处等距离布置4块导流板,反应器上部等距离布置11块导流板后,烟气速度场达到偏差小于15%的设计要求,因此该新型涡流喷氨混合装置完全能够替代传统的喷氨格栅。
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| 关 键 词： | SCR脱硝反应器 涡流喷氨混合装置 氨气浓度分布 速度分布 数值模拟 |
NEW TYPE VORTEX AMMONIA-SPRAYING AND MIXING FACILITY USED FOR DENITRIFICATION SYSTEM AS WELL AS NUMERICAL SIMULATION OF THE FLOW FIELD |
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| LUO Junjie,SONG Weiji,CHEN Jinfa,LI Tao,YU Liang,FENG Ziping.NEW TYPE VORTEX AMMONIA-SPRAYING AND MIXING FACILITY USED FOR DENITRIFICATION SYSTEM AS WELL AS NUMERICAL SIMULATION OF THE FLOW FIELD[J].Thermal Power Generation,2011,40(11). |
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| Authors: | LUO Junjie SONG Weiji CHEN Jinfa LI Tao YU Liang FENG Ziping |
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| Affiliation: | LUO Junjie,SONG Weiji,CHEN Jinfa,LI Tao,YU Liang,FENG Ziping Guangzhou Energy Research Institute under Chinese Academy of Science,Guangzhou 510640,Guangdong Province,PRC |
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| Abstract: | The performance of SCR denitrification system is depend on the uniformity of mixing the nitrogen oxides entered into the denitrification reactor with the reducing agent ammonia and the distribution of flue gas velocity.A new type vortex ammonia-spraying and mixine facility has been put forward,and the three dimensional numerical simulation of its flow field being carried out.The analysis shows that the vortex ammonia-spraying and mixing facility can uniformly mixing the flue gas entered into the first layer... |
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| Keywords: | SCR denitrification reactor vortex ammonia-spraying and mixing facility ammonia gas concentration distribution velocity distribution |
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