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本煤水浆喷嘴采用内混合式空气雾化喷嘴(图1)。煤水浆通道设计成形状简单的直通道。主流雾化空气高速旋转喷出,在内混合室与煤水浆混合,形成气浆薄液膜,它在内混合室出口处再与次流雾化空气相撞,进一步雾化破碎。 实验用煤粉成份为固体碳68.0％.挥发份23.2％,灰分7.8％和硫0.84％.实验用煤水浆按重量比为70％的磨细煤粉、1％的附加剂和29％的水组成。最大煤粒尺寸为250um。混
The coal slurry nozzle with mixed air atomization nozzle (Figure 1). Coal water slurry channel designed to form a simple straight channel. The mainstream atomizing air is spun at a high speed and the mixing chamber is mixed with the coal water slurry to form a gas-liquid thin film. It collides with the secondary flow atomizing air at the exit of the mixing chamber and is further atomized and broken. Experimental pulverized coal composition of 68.0% of solid carbon, 23.2% volatile matter, 7.8% ash and 0.84% sulfur Experimental coal water slurry by 70% by weight of pulverized coal, 1% additives and 29% Water composition. The largest coal size is 250um. mix