Will the water film inside the downcomer flow evenly?
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Under the influence of its own gravity and the syngas flowing downstream, could the water film in the downcomer become discontinuous in certain areas?
There is some pressure that prevents the water from flowing downward; generally, as long as there is no blockage, there will be no interruption in the flow. If you observe the water film in person, it will be easier to understand
Under normal conditions, the water film should be uniform, with a thickness of 6–8 mm; otherwise, local high temperatures can cause damage to the downcomer