What are the five feeding conditions in the distillation tower?
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Dear friends, I am not engaged in oil refining. I read the information and found that the distillation tower has five feed conditions. Which five are they? Can you tell me?
There are five feeding conditions: Cold feed, bubble point feed, gas-liquid mixed feed, saturated steam feed, superheated steam feed.
The answer above is 100 points!
Cold liquid, saturated liquid, saturated steam, gas-liquid mixture, superheated steam
The flow relationship of each stream in the rectification section and stripping section is related to the feed thermal conditions. The raw material liquid added to the distillation tower during production may have the following five thermal conditions:: (a) Cold liquid feed ； (b) Saturated liquid feed ； (c) Gas-liquid mixture feed ； (d) Saturated steam feed ； (e) Superheated steam feed. Due to different thermal conditions of the feed, the amount of steam rising from the feeding plate and the amount of liquid descending change. Their flow rates can be obtained through the material balance and heat balance of the feed.
Cold feed, bubble point feed, gas-liquid mixed feed, saturated steam feed, superheated steam feed. According to production needs, some are stripping towers, some are distillation towers, and some are flash towers.
The five feed conditions affect the vapor-liquid phase distribution in the distillation tower and affect the reflux ratio.