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Low Flow in Pipes- posted in Ankur's blog

Cold Box

Started by faeezie, Jan 15 2013 12:45 AM

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#1 faeezie

Brand New Member

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8 posts

Posted 15 January 2013 - 12:45 AM

Hi im practical student at ethylene plant. There is cold box at my plant where the function of cold box is to cold down the cracked gas from 34oC to -34oC. But, the pressure inlet and outlet is still the same. I just dont get understand why is happen?? What i know, if we reduce the temperature, the pressure will be reduce too...is anybody can help me to explain this process...

#2 gegio1960

Gold Member

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518 posts

Posted 15 January 2013 - 02:24 AM

The temperature decrease is realized by subtracting heat with an external refrigeration cycle and not by expanding the stream.
This is a very basic point......
Good luck

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