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PFR vs CSTR

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Prp89

Prp89

Chemical
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Hi all...

I'm new to this forum. Can anyone clear my doubt.

Hydrotreater reactor, FCCU reactor- These fall under which category. PFR or CSTR?
 
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These are better conceptualized as plug flow. Ignore the catalyst. In pfr the composition changes through the reactor from inlet to outlet. In a cstr it is the same everywhere in the reactor.

Best wishes,
sshep
 
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