Why is the feed inlet of the reactor located at the top rather than the bottom?
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Was the inlet of the propylene deacetylenation reactor placed at the top of the reactor rather than at the bottom to take residence time into account? (The reactor uses liquid-phase feeding) First post here; thanks to the seniors
Post the reactor diagram and I’ll take a look for you. I’m not an expert in this area, but I think you can consider the following points: 1. It helps to improve mass transfer efficiency ； 2. Contributes to increased heat transfer ； 3. If discharge is from the bottom, it is to increase the residence time ；
The reactor is a trickle-bed reactor, which helps to improve the efficiency of mass and heat transfer, extend the reaction time, and enable more complete reactions.
There’s one more important thing! The problem with hydrogen pairing! It is more conducive to uniform mixing when the material and hydrogen enter from the top. Assuming bottom feeding, since hydrogen is in the gas phase and the pressure is high, the residence time will **decrease, which affects the efficiency of acetylene removal! ! !
So, feeding from below would probably allow for a longer residence time, right? There’s the effect of gravity involved
Well, senior brother, this reason is really important. Thank you!
Senior, is it true that feeding from above causes channeling more easily?