【Daily Question】Chemical Engineering Principles 120: Liquid Flooding in Downcomers (July 25)
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The Chemical Engineering Theory section is launching the \"One Question per Day\" campaign starting today, aimed at helping everyone reinforce their basic knowledge in chemical engineering. Subsequent series will include those on \"Principles of Chemical Engineering\", \"Mass Transfer and Separation\", \"Thermodynamics in Chemical Engineering\", and \"Chemical Process Engineering\". We hope for your active support! Answers to the questions in the \"One Question per Day\" campaign can be viewed directly by replying, and this thread will be closed after 1 day ! You get 2 wealth points just for participating, and an additional 3 wealth points if you answer correctly~~~ Multiple-choice question: Which of the following is not a cause that can lead to the abnormal phenomenon of liquid flooding in the downcomer? A. The plate spacing is too small ； B. Severe leakage ； C. Excessive mist entrainment ； D. Excessive gas and liquid load ； B
My answer is B: Analysis of liquid flooding – the liquid inside the tower cannot flow smoothly down through each tray; as a result, the amount of liquid retained increases, the gas space shrinks, and a large amount of liquid overflows from the top of the tower along with the gas. Liquid entrainment flooding: It occurs when the plate spacing is too small, the amount of operating liquid is excessive, or the upward gas velocity is too high; the excessive amount of liquid foam entrained fills the space between the plates with a gas-liquid mixture, leading to flooding. Overflow flooding: Occurs when the liquid is hindered from flowing downward in the downcomer and accumulates on the tray
The reason that cannot cause the abnormal operation of liquid flooding in the downcomer is (B, severe leakage).
The reason that cannot cause the abnormal operation of liquid flooding in the downcomer is (B).
The reason that cannot cause the abnormal operation phenomenon of liquid flooding in the downcomer is ( ). C. Excessive mist entrainment ；
The reason that cannot cause the abnormal operation phenomenon of liquid flooding in the downcomer is ( ). C. Excessive mist entrainment
The reason that cannot cause the abnormal operation of liquid flooding in the downcomer is (B).
The reason that cannot cause the abnormal operation of liquid flooding in the downcomer is (B). A. The plate spacing is too small ； B. Severe leakage ； C. Excessive mist entrainment ； D. Excessive gas and liquid load ；