论文部分内容阅读
为调节炉内的给定温度,在增加燃料时,燃烧用空气量也要随之按比例的增减,要经常保持最佳空气量。若空气量不足,燃料中的可燃成份不能完全燃烧,在排出的废气中有未燃气体,由于燃烧效率的降低造成热量损失。相反供给的空气量超过了最佳空气量时,就要降低燃烧生成物的温度。从而也就降低了加热能力,增加了排出废气的热损失。一般在火焰炉中,供给低于最佳空气量时,则出现看不清炉内,且人的眼睛和鼻子有痛感,烟囱冒黑烟等明显现象。操作工人可立刻调正空气量。超过剩空气燃烧则是个问题,因为这个时候操作工人没有感观上的察觉而气体分析装置又不是炉子上的常设设备,因而常常看不到。所以从节约热能的角度,改进空燃比,实际上就是使得在最小限度的空气量情况下
In order to regulate the given temperature in the furnace, when increasing the fuel, the amount of air used for combustion should also increase or decrease proportionally, and the optimum air volume should be maintained frequently. If the amount of air is insufficient, the combustible components in the fuel can not be completely combusted, and there is an unburnt gas in the exhausted exhaust gas, resulting in loss of heat due to a decrease in combustion efficiency. If the amount of air supplied in the opposite direction exceeds the optimum amount of air, the temperature of the combustion product should be lowered. Thus reducing the heating capacity and increasing the heat loss of the exhaust gas. Generally in the flame furnace, when the supply is lower than the optimum air volume, the furnace can not see clearly, and the human eye and nose have a pain, black smokes and other obvious phenomena. Operators can immediately adjust the amount of air. Excess air burn is a problem because operators do not have a sense of perception at this time and gas analysis devices are not permanent equipment on the stove and are often not visible. Therefore, from the perspective of saving heat, to improve the air-fuel ratio, in fact, is to make the case of a minimum amount of air