Regarding black smoke from the boiler
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The day before yesterday, the boiler at our refinery started emitting black smoke. It is said that the gas supplied from the catalysis unit contained water and impurities; whenever this gas was burned, black smoke was produced (not only from the chimney, but also from the manholes and relief valves). What do you think are the main reasons for this black smoke? What are some good solutions?
The water entrained in the gas will vaporize inside the furnace; at high temperatures, the water vapor reacts with the gas to produce other gases, resulting in pressure fluctuations that may cause uneven burning of the nozzles within the furnace； Impurities consume the oxygen in the combustion zone of the furnace, which can lead to uneven burning of the nozzles inside the furnace as a result of insufficient oxygen. Black smoke indicates incomplete combustion; the presence of smoke from the manholes and blast doors suggests that there is positive pressure inside the furnace, indicating a problem with the control of the gas inlet pressure (with instantaneous fluctuations in pressure). Adjust the conditions of the preceding process, stabilize the intake pressure, and improve the quality of the intake air.
Improper adjustment of air volume for the blower and exhaust fan
This post was last edited by Standing in the East on 2009-9-7 at 18:44. The master said that black smoke coming from the boiler is due to incomplete combustion, and as for why combustion is incomplete, it cannot be explained solely by issues related to air supply. It’s mainly a fuel issue; the smoke coming from the manway blast door is also due to incomplete combustion, with the chimney unable to expel the smoke in time, so it escapes through the manway blast door – at this point, there is positive pressure inside the furnace. But if we only consider the air distribution issue, and there is a problem with the fuel such that complete combustion is not possible, is it useful to improve air distribution? ? ? ? If the smoke exhaust doesn’t meet the standards, the environmental protection agency will keep a close eye on it! !