布朗气对煤粉低氧燃烧催化影响  

Catalytic Effect of Brown Gas on Low Oxygen Combustion of Pulverized Coal

作　　者：胡斌彬 冯兆兴 郭强 徐有宁[2] 傅玉栋 HU Binbin;FENG Zhaoxing;GUO Qiang;XU Youning;FU Yudong(School of Energy and Power,Shenyang Institute of Engineering,Shenyang 110136,Liaoning Province;Institute of Engineering Technology,Shenyang Institute of Engineering,Shenyang 110136,Liaoning Province;Liaoning Lvyuan Energy Environmental Protection Technology Group Co.,Ltd.,Yingkou 115004,Liaoning Province)

机构地区：[1]沈阳工程学院能源与动力学院,辽宁沈阳110136 [2]沈阳工程学院工程技术研究院,辽宁沈阳110136 [3]辽宁绿源能源环保科技集团有限公司,辽宁营口115004

出　　处：《沈阳工程学院学报（自然科学版）》2024年第1期33-38,共6页Journal of Shenyang Institute of Engineering:Natural Science

摘　　要：低氧燃烧技术是降低NOx排放的方法之一,但该技术降低了氧气浓度,导致燃烧不充分,造成了水冷壁被腐蚀等故障。为解决此类问题,通过管式炉实验平台,在低氧浓度环境下掺入不同配比的布朗气,观察烟气中各气体的浓度、反应后的煤粉失重率及固体残渣中固定碳占比。结果表明:当掺入1%布朗气后,煤粉的失重率增加了9.82%,残渣固定碳的含量减少了47.06%;当掺入2%布朗气后,煤粉的失重率增加了10.36%,残渣固定碳的含量减少了49.16%,且在反应前期还原性气体CO和CH_(4)的析出值达到峰值的时间分别提前了4 min和3 min,在反应前期营造了还原性燃烧气氛。由此可见,通入布朗气有利于煤粉低氧燃烧技术的实际应用。Low oxygen combustion technology is one of the means to reduce NOx emission.However,due to the reduction of oxygen content,the technology leads to insufficient combustion and water wall corrosion.In this paper,through the tubular furnace experimental platform,brown gas with different proportions was mixed in the low oxygen concentration environment to observe the gas concentration of the flue gas,the weight loss rate of pulverized coal after reaction and the fixed carbon content in the solid residue.The experimental results show that when 1%Brown gas is added,the weight loss rate of pulverized coal increases by 9.82%and the fixed carbon content of residue decreases by 47.06%.When 2%Brown gas is added,the weight loss rate of pulverized coal increases by 10.36%and the fixed carbon content of residue decreases by 49.16%.In the early stage of the reaction,the time when the precipitation value of the reducing gases CO and CH_(4) reached its peak value is 4 minutes and 3 minutesearlierrespectively,creating a reducing combustion atmosphere in the early stage of the reaction.It can be concluded that the introduction of brown gas is beneficial to the low oxygen combustion of pulverized coal.

关 键 词：低氧燃烧 管式炉 布朗气 

分 类 号：TQ534[化学工程—煤化学工程]