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径向浓淡旋流煤粉燃烧器直流二次风对流场及NO_x排放的影响
引用本文:孙锐,李争起,孙绍增,陈力哲,吴少华,秦裕琨.径向浓淡旋流煤粉燃烧器直流二次风对流场及NO_x排放的影响[J].环境科学学报,1999,19(4):368-373.
作者姓名:孙锐  李争起  孙绍增  陈力哲  吴少华  秦裕琨
作者单位:哈尔滨工业大学能源科学与工程学院,哈尔滨,150001
摘    要:针对径向浓淡旋流煤粉燃烧器直流二交风对出口冷态流动特性的影响进行了试验研究,并在一台220t/h锅炉和一台670t/h锅炉上进行了工业性试验。冷模试验表明,直流二次风对旋流燃烧器出口气流的流动和混合特性有重要影响。

关 键 词:旋流煤粉燃烧器  浓淡燃烧  空气动力特性  NOx控制
收稿时间:9/9/1997 12:00:00 AM
修稿时间:1998/1/12 0:00:00

Effects of the non swirl secondary air jet on the flow properties and NOx emission of radial bias combustion swirl burner
SUN Rui,LI Zhengqi,SUN Shaozeng,CHEN Lizhe,WU Shaohua and QIN Yukun.Effects of the non swirl secondary air jet on the flow properties and NOx emission of radial bias combustion swirl burner[J].Acta Scientiae Circumstantiae,1999,19(4):368-373.
Authors:SUN Rui  LI Zhengqi  SUN Shaozeng  CHEN Lizhe  WU Shaohua and QIN Yukun
Affiliation:SUN Rui, LI Zhengqi, SUN Shaozeng, CHEN Lizhe, WU Shaohua, QIN Yukun (School of Energy Science and Engineering,Harbin Institute of Technology,Harbin 150001)
Abstract:The isothermal experiments and pilot tests have been conducted to study the effects of the non\|swirl secondary air on the characters of the new type swirl burner\|radial bias combustion (RBC) swirl pulverized coal burner.The isothermal experiments show that the non\|swirl jet had great influence on the flow pattern and mixing characters of the flow issuing from the swirl burner.Pilot tests also showed that the formation of a large amount of NO x was related to the oxygen condition in the start stage of combustion.The increasing non\|swirl second air created a reducing condition downstream the burner inlet,so the emission of NO x was abated.In addition,as the mixing among jets was intense in the downstream,higher combustion efficiency was maintained.
Keywords:swirl pulverized coal burner  off\|stoichiometric combustion  aerodynamic properties  NO    x  control  
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