锅炉煤炭燃烧过程NO_x释放规律及累积转化率影响因素  

Study of NO_x Release Rule and the Influencing Factors of Cumulative Conversion Rate in the Process of Coal Burning about Industrial Boiler

作　　者：单云霞[1] 杨柳[1] 王圣[2] 谭月[1] 王宗爽[3] 

机构地区：[1]南京师范大学地理科学学院,江苏南京210023 [2]国电环境保护研究院,江苏南京210098 [3]中国环境科学研究院标准研究所,北京100012

出　　处：《环境监测管理与技术》2013年第5期48-51,共4页The Administration and Technique of Environmental Monitoring

基　　金：国家科技支撑计划基金资助项目(2012BAC20B1003);环保公益性行业科研专项基金资助项目(201209001)

摘　　要：选用某电厂的实际用煤及焦炭,模拟燃煤电厂的煤炭燃烧过程,在不同温度、助燃气体流量、煤粉粒径和氧含量等多种条件下分别进行实验,得出不同燃烧条件下NO x的释放规律。实验表明,相同条件下,挥发分越大,氮的转化率也相对越大;煤的粒径越小,氮的转化效率越低;随着助燃气体流量的增加,燃料N转化为NO x的总转化效率增加;氧含量增加缩短了反应时间,但燃料N总效率变化不大。The release rule of the NOx under different combustion conditions was researched with choosing the actual coal and coke of a power plant to simulate the coal combustion process in fired power plants at various factors with different temperatures, combustion gas flow, and oxygen content of coal. It showed that the more vol- atile, the greater of the rate of nitrogen conversion under the same conditions. The smaller the particle size of coal, the lower the conversion efficiency of nitrogen. As the combustion gas flow increases, the total conversion efficiency of fuel N into the NOx is increased and the oxygen content increased while the reaction time is shorten, but little change in the overall efficiency of fuel N.

关 键 词：锅炉 氮氧化物 释放规律 累积转化率 

分 类 号：X511[环境科学与工程—环境工程]