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Burner Inspection and Maintenance

By Mohammed H. Al-Hajji, Saudi Arabian Oil Co. (Saudi Aramco) |

Burners are mechanical devices that are utilized for mixing proper quantities of fuel and air, and also for maintaining a stable flame inside fired equipment. Burners are critical components that must be periodically maintained to ensure the reliability of fired equipment in the chemical process industries (CPI), as well as many other industries. This article discusses the internal components and applications for different types of burners (gas, oil and combination), as well as the maintenance procedures that are required to ensure the integrity and reliability of burners in the CPI.   Gas burners There are two principal types of gas-fired burners used in the CPI: raw gas and pre-mix. Raw-gas burners are used for most applications. In these burners, the fuel gas passes through orifices in the gas tip and is injected directly into the combustion zone, where it mixes with air. A stabilizer cone is located just below the gas to improve combustion stability. These burners are suitable for mounting in plenum chambers (the area where air enters the burner), and can be used with preheated combustion air. Pre-mix burners are sometimes used in specialized applications. In these burners, the kinetic energy made available by the expansion…
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