How to find leaks in the regenerator and small flue when heating with lean gas
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Recently, black smoke will emit from the coke oven chimney for a few minutes after the exchange. It is initially estimated that it is caused by leakage in the regenerator or small flue, but it is impossible to investigate. What are your tips? How can I find the leakage location? This post was last edited by goudan020 on 2009-4-12 21:28 ]
Could you please tell me, is it during the exchange period or after the exchange? If it is during the exchange period, it may be a leakage in the carbonization chamber. As for after the exchange, I am not sure what the difference is during this time period? Is this true after swapping the fixed series or after swapping both series?
The smoke that emitted for several minutes during the exchange process should not be caused by leakage. The gas volume of the gas flow adjustment structure is too large, and the suction of the separate flue has not reached the set value. Caused by insufficient air volume
Is it flat gas or lean gas? What kind of gas is flat gas? Leakage of lean gas is difficult to detect, and it will not cause smoke from the coke oven. Blast furnace gas is used to heat the small flue, and the coal air will flow into each other, sometimes firing off blasts. Coke oven gas heating reversing smoke: 1. When the gas stroke of one of the coke ovens in a group is switched to the fully closed position, the pressure in the main pipe increases, and the flow rate of the other coke oven increases instantly, causing smoke. Reducing the pressure on the supervisor before changing direction can alleviate the problem. 2. If the interval between steps 1, 2, and 3 is short, smoke will emit. Allowing the interval to be slightly longer can solve the problem. 3. Turn off the gas in the first step of reversing direction. At this time, the flow rate should return to zero. If it does not return to zero, smoke will emit. It should be a stroke problem or some exchange cocks are not in the fully closed position. Adjust the stroke or handle.
Sorry, I made a typo. It's not "flat gas" but "poor gas". The black smoke from the chimney appeared about 5 minutes after the exchange, and disappeared within a few minutes. It is estimated to be caused by leakage, but the location of the leakage cannot be found. This makes it impossible to patch.
It should be a leakage between the carbonization chamber and the combustion chamber.
The problem is that there is no exchange at all times, but it occurs at half-time. It seems to have nothing to do with leakage in the carbonization chamber. Is it caused by leakage in the regenerator or small flue? If so, how to find it?
There is no exchange on the whole point, but it appears on the half-point exchange.: It means that during the half-point exchange, a certain furnace number in the downward direction leaked.