R
Hi all,
In our plant, there are installed pressure compensated temp. controller in a column. It is cascaded to steam condensate flow control to control reboiler heat input to column in targeting desired bottom product composition. I found this control loop didn't work and never used by operators for a long time. They said when it worked cascaded, the condensate CV was frequently unstable. I am sure, there is something wrong with this control scheme. I hope for brief description of this control system work mechanism and how to troubleshoot the problem.
Regards,
R. Lakota
In our plant, there are installed pressure compensated temp. controller in a column. It is cascaded to steam condensate flow control to control reboiler heat input to column in targeting desired bottom product composition. I found this control loop didn't work and never used by operators for a long time. They said when it worked cascaded, the condensate CV was frequently unstable. I am sure, there is something wrong with this control scheme. I hope for brief description of this control system work mechanism and how to troubleshoot the problem.
Regards,
R. Lakota