The hazards of high oxygen pressure in one of the burners during multi-nozzle gasification operation
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During the operation of multi-nozzle gasification, the oxygen pressure at one burner becomes 0.5 MPa higher than that at the other three burners. What potential hazards might this pose?
1. If the pressure differences between a pair of opposing burners are large, combustion within the gasification furnace may not occur at its center point; as a result, the flame’s burning center shifts, and over time this can lead to severe wear on the refractory bricks on the side where the shift occurs； 2. High oxygen pressure and increased flow rate lead to more severe wear of the burner over time compared to other burners ；
Inferging from considering why it is high
It is recommended to inspect the oxygen tube after parking; with such a high level, there must be a problem. In fact, this question should be discussed later……
During the operation of multi-nozzle gasification, the oxygen pressure at one of the burners becomes 0.5 MPa higher than that at the other three burners. What potential hazards might this pose? Essentially, the combustion center inside the gasifier is no longer at the point designated in the original design, which makes it difficult to maintain a stable gasification reaction and prevents the gas components from remaining within the specified range.
Most likely to cause changes in the syngas composition
If the pressure of one burner increases, and the flame from that burner is counteracted by the flames from another pair of burners, the combustion point should not shift much; the most important thing is to determine the cause of the high pressure.
1. Oxygen flow is always under control; a high pressure difference is generally not possible, unless the pipe diameters differ. One can determine this by checking other pressure points or by inspecting the pressure measurement points. 2. If the pressure is indeed high, the system should be stopped for maintenance to identify the cause.
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If the pressure difference of a single burner is higher than that of the other three burners, the analysis should start with an examination of any changes in the composition of the process gas. At the same time, it is necessary to check whether there are any changes in the surface temperature of the gasifier. If there are no significant changes in the composition of the process gas and the surface temperature does not increase either, then it can be assumed that there is an error in the instrument readings; otherwise, the process burner should be stopped immediately for inspection. The above content is for reference only; further communication is expected.