Re: FCC Aeration Flows as MVs in DMC Controllers

Posted by Bob Ellis on January 26, 2004 at 17:42:01:

In Reply to: FCC Aeration Flows as MVs in DMC Controllers posted by Anonymous on November 25, 2003 at 11:32:56:

I have not seen standpipe aeration flows used as MVs. Besides looking at the pressures along the standpipe, calculating the catalyst Fluid density and Bulk density in the standpipe may tell you something about proper aeration from a process engineering standpoint. In general, I would resist the temptation to "monkey around" with the aeration once the catalyst circulation was steady.

Engelhard has written a few good articles on FCC catalyst circulation troubleshooting. They are posted on www.thefccnetwork.com. You will need to sign-up to enter the Technical paper section. I hope this helps. Good luck.

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Comments:
: I have not seen standpipe aeration flows used as MVs. Besides looking at the pressures along the standpipe, calculating the catalyst Fluid density and Bulk density in the standpipe may tell you something about proper aeration from a process engineering standpoint. In general, I would resist the temptation to "monkey around" with the aeration once the catalyst circulation was steady. 

: Engelhard has written a few good articles on FCC catalyst circulation troubleshooting. They are posted on www.thefccnetwork.com. You will need to sign-up to enter the Technical paper section. I hope this helps. Good luck.


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