Re: Pressure-Compensating TCs at Regulatory Level ?

Posted by Dan O'Connor on June 09, 1999 at 11:03:06:

In Reply to: Re: Pressure-Compensating TCs at Regulatory Level ? posted by Don Snowden on June 08, 1999 at 22:33:39:

Don,

It was a tray temperature in the bottom section of the tower, maybe 5-10 trays from the bottom. Reflux in auto, and Pressure in auto (3 mvs in the tower, no side draw)

: Dan
: In your DIB application of PCT at regulatory level, what was it adjusting (i.e. where you controlling top temp or bottoms temp). I can see, as in Jim Gunderman's depropanizer example, that a PCT would work good for holding upper tray temp via reflux. Reflux rate movement does little to the vapor loading on the condenser, thus little impact on overhead PIC.
: Thanks in advance
: Don

Follow Ups:

• Re: Pressure-Compensating TCs at Regulatory Level ? Don Snowden 00:12:13 6/10/99 (1)
  • Re: Pressure-Compensating TCs at Regulatory Level ? Doug B Robertson 17:08:41 6/17/99 (0)

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Comments:
: Don, 

: It was a tray temperature in the bottom section of the tower, maybe 5-10 trays from the bottom.  Reflux in auto, and Pressure in auto (3 mvs in the tower, no side draw)

: 
: : Dan
: : In your DIB application of PCT at regulatory level, what was it adjusting (i.e. where you controlling top temp or bottoms temp).  I can see, as in Jim Gunderman's depropanizer example, that a PCT would work good for holding upper tray temp via reflux.  Reflux rate movement does little to the vapor loading on the condenser, thus little impact on overhead PIC.
: : Thanks in advance
: : Don


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