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When the cooling water flow to the condenser is lost, what happens to the tower?Loss of feed is not an abnormal condition for distillation tower operation. The tower operation can continue to operate normally.
Which of the following is an abnormal condition in a distillation tower, which may necessitate shutdown of the tower?
When the reflux pump trips during normal operation, the reflux drum level continues to increase and eventually the condenser is flooded. What happens after this situation?
Wrong The correct answer is: The cooling effect of the condenser decreases, causing the tower pressure to increase When the reflux pump trips during normal operation, the reflux and the top product flows stop. The tower temperature:
When the reflux pump trips during normal operation, you must:
Wrong The correct answer is: Start the backup reflux pump When the reflux pump trips during normal operation, the liquid flow in the tower:
Wrong The correct answer is: Decreases When the reflux pump trips during normal operation, the control valve of the reflux flow controller:
When the reflux pump trips during normal operation, the reflux and the top product flows stop. The tower temperature:
Wrong The correct answer is: Increases When the reflux drum level transmitter fails, the tower may be upset. The corrective action is to:
When the reflux drum level transmitter fails by incorrectly sending a level signal much lower than the real level during normal operation, the reflux drum level controller acts to increase the level. The actual level as seen through the field level sight-glass of the reflux drum is:
When the feed to the tower is lost, a shutdown operation is not required in many cases. The corrective action is to:
Wrong The correct answer is: Place the tower in total reflux mode When the feed to the distillation tower is lost, it can be detected by:
Wrong The correct answer is: Feed flow low alarm When the cooling water to the condenser is lost, the tower temperatures:
Wrong The correct answer is: Increase When the cooling water flow to the condenser is lost, what happens to the tower?
Date: 2016-01-14; view: 1652
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