摘要
对铜川贫煤进行了挥发份析出和燃烧试验。通过测取和分析挥发份燃烧后烟气中的 NO,对铜川贫煤挥发份中氮的赋存及迁移规律进行了探索和研究。研究表明 :铜川煤的挥发份中氮的赋存形态至少为 2种 ;随着挥发份燃烧温度的升高 ,NO浓度峰值的出现时间向前移动 ;挥发份燃烧温度上升到 1 673 K以后 ,虽然有利于热力型 NO的生成 ,但对燃料型 NO的形成有一定的抑制作用。研究结果为进一步完善煤燃烧理论 ,有效控制煤燃烧过程中氮氧化物的生成提供了必要的理论基础。图 1 4参 1
Proceeding from the knowledge of the functional forms of nitrogen in coal it should be possible to draw conclusions on the mechanism of its release during volatiles combustion. Combustion experiments were carried out with pulverized Tongchuan coal in a temperature range from 1173 to 1673K. The gases produced during volatiles combustion were sent into MSI Compact Analyzer and nitric oxidation concentration of gases was determined by the instrument too. It is found that the appearance time of concentration peak value of nitric oxidation resulted from volatile combustion of Tongchuan coal will be brought forward with the increasing combustion temperature. There are at least two types nitrogen functionalities existing in volatiles of Tongchuan coal. After 1573K, the continuous rise of combustion temperature will keep Fuel Nitric Oxidation from production though it is propitious to produce Thermal Nitric Oxidation. This investigation contributes to perfect further the theory of coal combustion and provides an essential base in theory for effectively controlling nitrogen oxide formation in the process of coal combustion. Figs 14 and refs 10.
出处
《动力工程》
CAS
CSCD
北大核心
2003年第1期2164-2167,2138,共5页
Power Engineering
基金
中国国家自然科学基金委员会资助(G19990 2 2 2 10 )
