煤粉直接点火燃烧器技术及其进展

Directly Ignited Pulverized Coal Burner Technology and Its Development

煤粉直接点火燃烧器应是我国电站煤粉锅炉燃烧器改进的主要方向。提出把直接点火技术与稳燃技术相结合来设计直接点火燃烧器的思路，对该类燃烧器做了较合理的分类。指出了少油煤粉直接点火燃烧器及无油煤粉直接点火燃烧器两大系列燃烧器发展状况及存在的问题，并指出目前应大力开发无油煤粉直接点火系列燃烧器，对电站锅炉煤粉直接点火燃烧器的研究有指导意义。

In improving the pulverized coal burners of utility boilers the main focus of attention should be accorded to directly ignited pulverized coal burners. Based on an integration of direct ignition techniques with combustion stabilization technology the authors have designed a directly ignited pulverized coal burner. Such burners can be rationally classified into two types: directly ignited pulverized coal burners without using any fuel oil and directly ignited pulverized coal ones using only a small quantity of fuel oil. Presented in this paper are the current status of development of these two kinds of burners and their respective drawbacks. It is recommended that main efforts should now be directed to the improvement of directly ignited pulverized coal burners using no fuel oil. The paper can offer some guidelines during the study of directly ignited pulverized coal burners for utility boilers.