Embed Size (px)
DESCRIPTION
Batch Profile Control. Presenter. - PowerPoint PPT Presentation
Citation preview
Standards
Certification
Education & Training
Publishing
Conferences & Exhibits
Batch Profile Control
22
Presenter
– Greg is a retired Senior Fellow from Solutia/Monsanto and an ISA Fellow. Greg was an adjunct professor in the Washington University Saint Louis Chemical Engineering Department 2001-2004. Presently, Greg contracts as a consultant in DeltaV R&D via CDI Process & Industrial and is a part time employee of Experitec and MYNAH. Greg received the ISA “Kermit Fischer Environmental” Award for pH control in 1991, the Control Magazine “Engineer of the Year” Award for the Process Industry in 1994, was inducted into the Control “Process Automation Hall of Fame” in 2001, was honored by InTech Magazine in 2003 as one of the most influential innovators in automation, and received the ISA Life Achievement Award in 2010. Greg is the author of numerous books on process control, his most recent being Advanced Temperature Measurement and Control. Greg has been the monthly “Control Talk” columnist for Control magazine since 2002. Greg’s expertise is available on the web site: http://www.modelingandcontrol.com/
3
Liquid Reactants (Jacket CTW) Liquid Product Basic Control
TT 1-4
TC 1-3
TC 1-4
AT 1-6
LY 1-8
FY 1-6
FT 1-2
FC 1-2
reactant A
reactant B
CAS
residencetime calc
CAS
ratiocalc
AC 1-6
makeup
return
LY 1-8
FY 1-6
reactant A
reactant B
residencetime calc LT
1-8 TT 1-3
LC 1-8
CAS
ratiocalc
product
vent FT 1-1
FC 1-1
FC 1-7
FT 1-7
CAS
PT 1-5
PC 1-5
FT 1-5
CTW
Residence time and composition control is for continuous reactors otherwise theflow, pressure, and temperature controlshown could be for batch or continuous.
4
Liquid Reactants (Jacket CTW) Liquid Product Optimization
TT 1-4
TC 1-3
TC 1-4
AT 1-6
LY 1-8
FY 1-6
FT 1-2
FC 1-2
reactant A
reactant B
CAS
residencetime calc
CAS
ratiocalc
AC 1-6
makeup
return
LY 1-8
FY 1-6
reactant A
reactant B
residencetime calc LT
1-8 TT 1-3
LC 1-8
CAS
ratiocalc
product
vent FT 1-1
FC 1-1
FC 1-1CAS
ZC1-4OUT
ZC 1-4
FC 1-7
FT 1-7
PT 1-5
PC 1-5
FT 1-5
CTW
ZC1-4 is an enhanced PID VPC
Valve position controller (VPC) setpointis the maximum throttle position. TheVPC should turn off integral action toprevent interaction and limit cycles. Thecorrection for a valve position less thansetpoint should be slow to provide a slow approach to optimum. The correction fora valve position greater than setpoint mustbe fast to provide a fast getaway from thepoint of loss of control. Directional velocitylimits in AO with dynamic reset limit in anenhanced PID that tempers integral actioncan achieve these optimization objectives.
5
Liquid Reactants (Jacket CTW) Gas & Liquid Products Basic Control
TT 1-4
TC 1-4
AT 1-6
LY 1-8
FY 1-6
FT 1-2
FC 1-2
reactant A
reactant B
residencetime calc
CAS
ratiocalc
AC 1-6
makeup
return
LY 1-8
FY 1-6
reactant A
reactant B
CAS
residencetime calc
LT 1-8
LC 1-8
CAS
ratiocalc
product
FT 1-1
FC 1-1
FC 1-7
FT 1-7
CAS
TC 1-3
TT 1-3
product
PC 1-5
FT 1-5
W
PT 1-5
TT 1-10
TC 1-10
CTW
Residence time and composition control is for continuous reactors otherwise theflow, pressure, and temperature controlshown could be for batch or continuous.
6
Liquid Reactants (Jacket CTW) Gas & Liquid Products Optimization
TT 1-4
TC 1-4
AT 1-6
LY 1-8
FY 1-6
FT 1-2
FC 1-2
reactant A
reactant B
residencetime calc
CAS
ratiocalc
AC 1-6
makeup
return
LY 1-8
FY 1-6
reactant A
reactant B
CAS
residencetime calc
LT 1-8
LC 1-8
CAS
ratiocalc
product
FT 1-1
FC 1-1
FC 1-7
FT 1-7
CAS
TC 1-3
TT 1-3
product
PC 1-5
FT 1-5
W
PT 1-5
TT 1-10
TC 1-10
ZC 1-4
ZC 1-10
ZC 1-5
ZY 1-1
FC1-1CAS
ZY1-1OUT
low signalselector
ZC-10OUT
ZC-4OUT
ZC-5OUT
ZY-1IN1
ZY-1IN2
ZY-1IN3
CTW
ZC1-4, ZC-5, & ZC-10 are enhanced PID VPC
7
Gas & Liquid Reactants (Jacket CTW) Liquid Product End Point Control
TT 1-4
PC 1-5
TC 1-3
TC 1-4
AT 1-6
LY 1-8
FY 1-6
FT 1-2
FC 1-2
gas reactant A
liquid reactant B
CAS
residencetime calc
CAS
ratiocalc
AC 1-6
makeup
return
LY 1-8
FY 1-6
residencetime calc
CAS
ratiocalc
product
purge FT 1-1
FC 1-1
FC 1-5
FT 1-5
LT 1-8
TT 1-3
PT 1-5
LC 1-8
CAS
FC 1-7
FT 1-7
CTW
Pressure control inherentlyprevents an excess of gas reactant providing endpointcontrol for liquid product in continuous andfed-batch reactors.
Residence time and composition control is for continuous reactors otherwise theflow, pressure, and temperature controlshown could be for batch or continuous.
8
Resource
Advanced Temperature Measurement and Control - 2nd Ed has a lot of detailson how to improve temperature sensoraccuracy and temperature control of heat exchangers, reactors, and kilns
Biological and Chemical Reactor Controlis an ISA book whose kernel is the ISAAutomation Week tutorial. The book will beavailable in December just in time for the holidays. Surprise your spouse with the bookas a “gift that keeps on giving.” Your spousewill never let you forget it.
