论文部分内容阅读
燃料燃烧必须有足够的空气来提供氧气,空气量不足,则燃料不能充分燃烧,浪费能源;空气过量,虽然燃料能充分燃烧,但过量的助燃空气会吸收热量,降低燃气温度,使燃气能级下降,(火用)值减少,不能发挥燃料的应有作用,同样浪费能源。通过鼓、引风量的调整等手段,合理控制空气消耗量,即控制空气消耗系数的大小,使燃料燃烧发挥最佳效益,得到燃气最大能级。充分发挥能源(燃料)的供能作用是十分必要的,对节约能源,降低能耗,提高企业经济效益是有重要意义的。从能量平衡的观点看,空气消耗系数的大小对燃烧的影响,只是反映排烟载热损失的大小和气体不完全燃烧损失的大小。但是从(火用)的观点看,通过燃料燃烧计算可以看出,空气消耗系数的大小对燃料燃烧的影
Fuel combustion must have enough air to provide oxygen, the amount of air is insufficient, the fuel can not be fully burned, waste of energy; excess air, although the fuel can be fully burned, but excessive combustion air will absorb heat, reduce gas temperature, gas level Decline, (exergy) value reduction, can not play the due role of fuel, the same waste of energy. Through the drum, the amount of air intake and other means of adjustment, reasonable control of air consumption, that is, control the size of the air consumption factor, so that the best fuel combustion play to get the maximum gas level. It is very necessary to give full play to the energy supply function of energy (fuel), which is of great significance to saving energy, reducing energy consumption and raising the economic efficiency of enterprises. From the energy balance point of view, the air consumption coefficient of the size of the impact on the combustion, only reflect the size of the exhaust heat loss and gas incomplete combustion loss size. However, from an exergy point of view, it can be seen from the fuel combustion calculation that the magnitude of the air consumption coefficient affects the fuel combustion