JACKIE CARROLL WATTS
Pilots at Salina St, Borger, TX
License number
Texas A2010718
Issued Date
May 2015
Expiration Date
May 2017
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
203 Salina St, Borger, TX 79007
Professional information
Nonlinear Model Based Distillation Control
US Patent:
5343407, Aug 30, 1994
Filed:
Nov 1, 1991
Appl. No.:
7/786670
Inventors:
Martin H. Beauford - Borger TX
Jackie C. Watts - Borger TX
Jackie C. Watts - Borger TX
Assignee:
Phillips Petroleum Company - Bartlesville OK
International Classification:
G06F 1560
US Classification:
364501
Abstract:
In a fractional distillation process which performs a binary or limited multicomponent separation, and in which it is desired to maintain composition set points for dual product streams, a computer is programmed for applying model based control. Multivariable, noninteracting control of the distillation process is achieved by utilizing a nonlinear model, which calculates process vapor and distillate flow rates required to maintain product set points. The model, which applies tray-to-tray calculation essentially derived from a McCabe-Thiele analysis, is periodically updated by adjusting tray efficiency based on steady state composition measurements to keep the model in pace with changing process conditions. Guards to exceeding distillation process constraints, while keeping the distillation column running are provided by detecting the constrained condition, specifying which of the dual products is more valuable and then substituting constrained values for certain normally measured process variables used in the model calculations. In this manner, normal control actions are overridden when a process constraint is encountered.
Nonlinear Model Based Distillation Control
US Patent:
5260865, Nov 9, 1993
Filed:
Apr 1, 1991
Appl. No.:
7/678775
Inventors:
Martin H. Beauford - Borger TX
Jackie C. Watts - Borger TX
James B. Riggs - Lubbock TX
Jackie C. Watts - Borger TX
James B. Riggs - Lubbock TX
International Classification:
G06F 1546, G05B 1304
US Classification:
364151
Abstract:
In a fractional distillation process which performs a binary or limited multicomponent separation, and in which it is desired to maintain composition set points for dual product streams, a computer is programmed for applying model based control. Multivariable, noninteracting control of the distillation process is achieved by utilizing a nonlinear model, which calculates process vapor and distillate flow rates required to maintain product set points. The model, which applies tray-to-tray calculation essentially derived from a McCabe-Thiele analysis, is periodically updated by adjusting tray efficiency based on steady state composition measurements to keep the model in pace with changing process conditions.