I’d like to ask for advice
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A heat exchanger is installed, with the shell side fed by high-octane gasoline that has been produced through reforming and then dehydrated in a stabilizer tower, while the tube side is fed by heavy gasoline from the bottom of the xylene tower. After heat exchange, the high-octane gasoline exiting the shell side enters the pentane removal tower. There is a constant humming sound at the outlet of the shell side, similar to the sound produced by a reciprocating pump; this sound can be heard all the way up to the feed inlet of the tower
Measure the temperature and pressure to see if it has vaporized.
It should be vaporization; how can this situation be resolved? a
It’s only partial vaporization; the temperature in the shell side is 50°C before heat exchange and 75°C after it, while on the tube side it’s around 200°C before heat exchange. This situation probably occurs at the outlet of the shell side and the inlet of the tube side. The amount involved isn’t large, but how can it be eliminated?
Pay special attention to the phenomenon of water hammer and tube vibration caused by excessive flow velocity!
This post was last edited by Looking at the Moon_HYPX on 2019-3-15 08:31. Consider optimizing the heat exchange process; the flow rate of light gasoline is low and the heat exchange temperature is high, which makes vaporization more likely. This is also related to the composition of the oil – it should be better when light gasoline accounts for a higher proportion in the gasoline mixture. Strictly speaking, your equipment is likely not capable of processing the current type of oil; you can try reducing the flow rate for the heavy gasoline. If there are pipes leading away from the heat exchanger for the heavy gasoline, those can be adjusted to an appropriate level.