锅炉燃用残渣油时,因设计(如炉膛出口烟温)的限制,不可避免地会有一定的固定损失。这些固定损失包括完全燃烧的干烟气的显热和使水蒸汽蒸发的潜热,以及它们共同地使辅助设备,主要是风机消耗动力。附加损失是由于运行工况失常和原有表计不便于运引人员去控制而引起的。这些损失包括:1)由于可燃气体和固体物质未完全燃烧造成的损失。2)由于需要过剩空气包括风机容量较大增加了动力消耗造成的损失。图1表示了改变过剩空气来控制这些损失的途 Boiler burning residual oil, due to the design (such as the furnace exit smoke temperature) restrictions, will inevitably have a fixed loss. These fixed losses include the sensible heat of completely combusted dry flue gas and the latent heat that causes water vapor to evaporate, and they collectively power auxiliary equipment, primarily fans. Additional loss is due to operating conditions and the original meter is not easy to control the movement caused by the staff. These losses include: 1) Loss due to incomplete combustion of combustible gases and solid substances. 2) Loss due to power consumption due to the need for excess air, including large fan capacity. Figure 1 shows the way to change excess air to control these losses