一种新型低污染燃煤装置的冷态研究

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，并在此基础上进行了比较系统的冷态实验研究，对３种典型工况下的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

A Research on a New Type of Coal Combusting Equipment with Low Pollution Discharge under Cold Condition

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.