Abnormal fluctuations in regenerator inventory
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The reserve in the regenerator suddenly decreased by 10 tons, then increased by a few tons after some time. The backflow path was unobstructed, the opening degree of the shut-off valves and the vertical pipes remained unchanged, and there were no fluctuations in the main air pressure. Has anyone encountered this situation? What could be the reason?
What is the total reserve? What is the approximate interval time for this phenomenon?
The total reserve in the regenerator is around 220 tons; the intervals between fluctuations are irregular, occurring at unpredictable times, with some intervals being quite long
Considering this phenomenon in conjunction with the question you raised on February 2nd, I suspect it is still caused by an issue with the main air distribution duct. Reserve measurement is achieved through the differential pressure in the pressure sensing tubes. An uneven distribution of the main air flow can cause fluctuations in the pressure difference across these tubes, leading to unstable measurements. If the main air flow is evenly distributed within the regenerator, the fluidization state remains relatively stable; whereas an uneven distribution will inevitably result in a disrupted fluidization state.
Has there been any change in the heat absorbed from the outside? Could it be that fluctuations in the pressurized air are causing changes in the amount of heat absorbed by the external heat exchanger? Additionally, there is the issue of uniformity in the distribution of the main air flow; fluctuations in the operating conditions of the bed layer lead to uneven pressure readings at the instrument connection pipes. That’s my personal opinion