Butane removal tower (LPG): Why is the C5 content too high?
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This post was last edited by Green Lotus on 2018-5-13 at 17:03, with 4 answers provided. 1. High bottom temperature, C5 component exceeds limit ； 2. Low tower top temperature ； 3. The reflux flow at the tower top is low, and the C5 component level is excessive ； 4. The tower top pressure is high, and the C5 component level is excessive. Why are it the 2nd and 4th?
Which question? There must be a mistake in the question.
Answers to the CNPC technician questions; I didn’t understand questions 2 and 4. What do you think the answer is?
This is a question related to gas phases, right? Both the 2nd and 4th options are likely incorrect. The fourth can be explained as tower ramming.
Article 4 states that high pressure at the top of the tower leads to a high C5 content; should the pressure in the liquefied gas reflux tank be reduced accordingly? ~~~The answer is wrong, right? ? ?
It’s not really about choosing the right or wrong questions, but about analyzing the essay questions. This is the answer provided by the person who set the question. I’m very skeptical and confused about answers 2 and 4, so please help me figure out whether these answers are incorrect
I am operating this LPG separation tower unit, and situations like 2,4 have not occurred yet.
In other words, answers 2 and 4 are incorrect. Apart from 1 and 3, are there any other factors that contribute to an excessive level of C5? ? Help!