适用于无烟煤燃烧的新型涡流拱特性的研究

提出一种能够用于链条炉燃用无烟煤的涡流拱新技术。通过模化试验对涡流拱特性进行了试验研究，分析了其工作机理，获得确定涡流拱最佳结构尺寸的要素。结果表明，涡流拱能有效地增加后拱气流向前拱的卷吸输送量，有助于提高前洪温度。在首次应用实践中，对于燃用Ⅲ类末煤型无烟煤的炉膛能够及时着火、强化燃烧，取得了满意效果。

A Study of the Features of a Novel Vortex Arch Suited for the Combustion of Anthracite Coal

Presented is a kind of new technology incorporating a vortex arch suited for the burning of anthracite coal in a traveling grate boiler. Through modeling tests an experimental investigation was conducted of the features of the vortex arch along with an analysis of its working mechanism. As a result, identified are the key conditions to be met for achieving the optimum structural dimensions of a vortex arch. The results of study indicate that the vortex arch can effectively increase the suction and transport quantity of gas flow from a rear arch to a front one, contributing to an increase in the front arch temperature. During its practical use for the first time it has been found that the vortex arch is conducive to the timely ignition of a furnace firing flaxseed coal of category III accompanied by an intensified combustion.