摘要
煤的低尘燃烧是当今燃烧科学领域的一项重要课题。本文提出一种新型的液排渣粉煤燃烧装置，建立了冷态模型，并在此模型上进行了比较系统的冷态实验研究，对３种典型工况下的实验结果进行了较为详尽的探讨和研究，得出几个重要结论：（１）中心筒替代了传统旋风炉缩口的作用，增大了环室回流，因而提高了捕渣率；（２）实验过程中发现，各工况中存在着反向二次风气流，为实现分级燃烧模式创造了条件，这样可降低ＮＯｘ的产生及其排放量；（３）引入两级中心筒和二次分离室的装置结构，可进一步提高过程捕渣率。
At present, coal combustion with low pollution discharge is one of the most important research projects in combustion science field. A new type of coal combusting equipment with slagging discharge has been proposed. Its corresponding model under cold condition has been established and a series of systematic experimental research has been made. With fairly detailed study and analysis on the result from three typical working conditions, some important conclusions have been obtained as follows: (1) Central flue increases annular recirculating flow, then slag captured rate also increases; (2) Inverse secondary air flow as we called has been discovered in every experimental working condition. It makes stage combustion possible which can decrease the production and discharge of NO x . (3) The construction with secondary separating chamber and two central flues can make slag captured rate promoted further. It represents the optimum experimental working condition.
出处
《燃烧科学与技术》
EI
CAS
CSCD
1997年第1期97-104,共8页
Journal of Combustion Science and Technology
关键词
液排渣
排渣率
燃烧装置
煤粉
Slagging, Slag captured rate, Central flue, Secondary separating chamber
