低负荷稳燃和高负荷防结渣复合型燃烧器研究开发

TEST AND STUDY ON DEVELOPING COMPOSITE BURNERS WITH CAPABILITY OF STABLE COMBUSTION UNDER LOW LOAD AND SLAGGING PREVENTION UNDER HIGH LOAD

针对电站燃煤锅炉实际存在的低负荷稳燃和高负荷防结渣的矛盾 ,设计了一种新型复合型燃烧器。为确切了解复合型燃烧器的气固两相流动情况 ,在单喷口冷模实验台和四角喷燃炉冷模实验台上 ,对不同结构型式和尺寸的复合型燃烧器进行了大量的冷模试验 ,推荐了合理的结构和尺寸 ,为复合型燃烧器在电站锅炉上的应用提供了依据。实炉试验结果表明 ,设计达到了预期设想。

Directing against the contradiction existing actually between stable combustion under low load and slagging prevention under high load of coalfiring utility boilers, the structure concept of a new type composite burner has firstly been expounded, and measures should be taken for the said burner to ensure stable combustion under low load and slagging prevention under high load being presented. In order to understand exactly the gassolid twophase flow dynamics of the said burner, a vast amount of cold model test and fireworks tracing for various structural type and dimensions of said burner have been carried out on a single jet cold model test stand and on a corner firing furnace cold model test stand, providing basis for using the said composite burner on utility boilers. The test results show that the prospective conception of design has been achieved.