【作者】 徐华；

【导师】 武立云；

【作者基本信息】 北京工业大学 ， 材料学， 2002， 硕士

【摘要】 高温空气燃烧技术是新兴的先进燃烧技术，具有高效节能和低污染排放的双重优越性，受到世界科学界和工业界的广泛关注，更符合我国可持续发展战略目标。当前高温空气燃烧技术的发展方兴未艾，人们在其应用方面已经对该技术的先进性达成共识，把高温空气燃烧技术提到了一个重要的地位。 本课题为国家973项目，在自身设计的小型实验炉上进行燃烧实验，选取不同的实验参数：一次空气系数0.15、0.3、0.45；二次空气系数1.2、1.4、1.8；换向时间60秒、90秒、120秒、360秒；不同构型，燃气不换向、空气与燃气同向换向、空气与燃气逆向换向。利用烟气成分分析仪进行烟气成分测量。为了测量温度在炉膛内与管道中布置了31根直径为0.5毫米的裸偶。利用自行编制的测温软件进行温度测量。对实验数据进行整理分析，寻求符合自身条件的污染物排放最低的最佳工况。 为了进一步提高烟气余热回收率，进行了将排烟温度降低到60℃的实验。计算了陕北天然气露点为85℃—110℃。因此将排烟温度降低到60℃后，考虑了低温腐蚀的问题。对比了不同空气系数下，不同排烟温度时的余热回收温度效率，探讨了利用燃烧过程中生成水的冷凝热及其对污染物的吸收作用。 从理论上分析了氮氧化物产生的机理，从影响氮氧化物生成的因素上分析了换向过程对氧气浓度、炉温的影响。对比不同构型对高温空气燃烧的影响。分析了不同构型下温度变化的特点，对氮氧化物生成的影响，在空气与燃气逆向给进的构型中，氮氧化物生成量明显低于其它方式。初步探讨了产生这些特点的原因。为今后的工作打下基础。关于涉及换向过程对高温空气燃烧的影响的内容在相关文献中还未见到。更多还原

【Abstract】 High temperature air combustion (HTAC) technology, which is a new type combustion technology with advantages of both highly energy saving and low pollutant emissions, is more attended in the fields of science and industry. To develop this technology accords with the situation of our country.This project is a national 973 item. Studied on a set of self-designed regenerative combustion system, choosing several parameters: primary air 0.15, 0.3 andO. 45; secondary air 1.2, 1.4 and 1.8; switching time 60s, 90s, 120s and 360s. Observed and measured in the three configurations that are fuel (and primary air)/2nd air parallel flow, counter flow and fuel-steadiness on the kiln. Arranged 31 thermal couples, diameter 0. 5mm. Measured temperature with self-program software. Calculated system heat exchanging and measured pollutant emission in order to get optimal work situation.The temperature of waste fume are reduced from 200℃ to 60℃ in order to increasing recovery rate of waste heat further In HTAC. Because calculated dew point of gas is about from 85℃ to 110℃, so we should consider low temperature corrosion. Discussed taking advance condensation heat of water in waste fume. At the same time, the water can absorbed several pollutants in waste fume.Emphases on reducing nitrogen oxide emission. Analyzed switching process affect on oxygen content, temperature in HTAC. Compared different on oxygen content, temperature under three configurations. Discover that nitrogen oxide emission is lower outstanding in the fuel /2nd air counterflow configuration than other two configurations and try to discuss this reason. This study is brought forward to guide the work for the future.更多还原