空气预热器就是锅炉尾部烟道中的烟气通过内部的散热片将进入锅炉前的空气预热到一定温度的一种设备，可以用来提高锅炉的热交换性能，降低能量消耗。按空预器的传热方式可以分为导热式和再生式两大类，那我们怎么预防火灾这种突发情况呢?
Air preheater is a flue at the tail of the boiler flue gas through the internal heatsink will enter boiler air preheating to a certain temperature equipment, can be used to improve the boiler heat exchange performance, reduce energy consumption. It can be divided into two major categories of heat conduction and regenerative air pre heater according to the heat transfer, then how do we prevent this kind of fire emergency?
尽量减少在空预器上沉积未燃尽可燃物的现象，关键是使燃料完全燃烧。首先，用油点火及低负荷投油时，油温、油压、汽压应合适，使油雾化良好，配风正确油枪不堵塞，不漏油燃烧稳定、充分，以尽量减少未燃尽的可燃物。其次，加强对空预器的监视机组启动前应对空预器全面检查，若发现或判断空预器有较多未燃尽的可燃物堆积时，决不能投入热态运行，一定要进行水清洗，然后烘干。还应保证吹灰器能正常投入，吹灰介质参数合格。
To reduce in air pre heater deposited on the unburned combustible phenomenon, the key is to make the fuel burn completely. First, when the dosage of oil ignition and low load oil, oil temperature, oil pressure, air pressure should be appropriate, good atomizing oil, air distribution is correct no blockage of the oil gun, no leakage combustion stability and sufficient, to minimize unburned combustible material. Secondly, strengthen the monitoring unit of air preheater start before the deal with air pre heater comprehensive inspection, if found or to judge more not burn the combustible material accumulation air pre heater, must not be put into running hot, be sure to cleaning water, and then dried. Sootblowers shall also ensure that the normal input, qualified blowing medium parameters.
，在运行过程中，特别是启动、热备用后再启动以及空预器突然停转和停炉后，应严密监视空预器的端点温度空预器烟风进、出口温度。若其中的一点或多点温度不正常升高，则应立即分析研究，以便及时发现着火。
Finally, in the operation process, especially after the start, hot standby after restart and air preheater suddenly stops rotating and stopping furnace should be closely monitored air preheater of endpoint temperature air pre heater smoke wind inlet and outlet temperature. If one or more temperature abnormal increase, they should immediately study, in order to discover the fire.
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