GB1255541A - Method for the automatic control of a process - Google Patents

Method for the automatic control of a process

Info

Publication number
GB1255541A
GB1255541A GB1238169A GB1238169A GB1255541A GB 1255541 A GB1255541 A GB 1255541A GB 1238169 A GB1238169 A GB 1238169A GB 1238169 A GB1238169 A GB 1238169A GB 1255541 A GB1255541 A GB 1255541A
Authority
GB
United Kingdom
Prior art keywords
variables
alternative
flow
automatic control
march
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1238169A
Inventor
Jacobus Johannes De Jong
Jacobus Snoek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Publication of GB1255541A publication Critical patent/GB1255541A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B15/00—Systems controlled by a computer
    • G05B15/02—Systems controlled by a computer electric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/42—Regulation; Control
    • B01D3/4211—Regulation; Control of columns
    • B01D3/4227—Head- and bottom stream

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Control Of Non-Electrical Variables (AREA)
  • Feedback Control In General (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

1,255,541. Automatic control systems. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. March 10, 1969 [March 12, 1968], No.12381/69. Heading G3R. A method for the automatic control of a number of process variables by a digital computer in response to measured values of the variables is characterized by the provision of at least one alternative programme for use in the event of a disturbance in the operation of the process equipment or a part thereof. Change-over to the alternative programme may be automatic, and it may be designed to provide reduced normal product and/or a gradual termination of the process. The invention is described in relation to two alternative processes, a distillation system, Fig.1 (not shown) and a catalytic reforming process for hydrocarbons, Fig.2 (not shown). In the first of these pressure, fluid-flow and liquid level are measured at various points and if any of them are outside upper and lower limits the alternative programme is used to adjust e.g. the feed, condenser coolant flow, the flow in re-circulatory loops &c. until the variable is restored to within the limits. In certain cases a second and different correcting action is made if the first is insufficient. The system includes means for keeping the ratio between certain quantities constant so that corrective action is applied to both. The second system uses similar control arrangements of these same variables, and in addition the temperature in reactor vessels is kept constant by adjustment of heater fuel supply, and if the temperature drops below a minimum value the set point of a feed control system is lowered. The normal operation of these systems is not described in detail, and neither is the computer.
GB1238169A 1968-03-12 1969-03-10 Method for the automatic control of a process Expired GB1255541A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6803525A NL6803525A (en) 1968-03-12 1968-03-12

Publications (1)

Publication Number Publication Date
GB1255541A true GB1255541A (en) 1971-12-01

Family

ID=19803011

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1238169A Expired GB1255541A (en) 1968-03-12 1969-03-10 Method for the automatic control of a process

Country Status (5)

Country Link
CA (1) CA950561A (en)
DE (1) DE1912061A1 (en)
FR (1) FR2003701A1 (en)
GB (1) GB1255541A (en)
NL (1) NL6803525A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4775949A (en) * 1986-06-27 1988-10-04 K-Tron International, Inc. Weigh feeding system with stochastic control
US4893262A (en) * 1986-06-27 1990-01-09 K-Tron International, Inc. Weigh feeding system with self-tuning stochastic control
US4954975A (en) * 1988-08-10 1990-09-04 K-Tron International, Inc. Weigh feeding system with self-tuning stochastic control and weight and actuator measurements
WO2012020154A1 (en) * 2010-07-29 2012-02-16 Universidad De Malaga Monitoring and control system and method for a distillation column

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1404761A (en) * 1970-05-26 1975-09-03 Toyoda Automatic Loom Works Method of controllig a spinning operation
DE2360757C2 (en) * 1973-12-06 1986-12-04 Metallgesellschaft Ag, 6000 Frankfurt Automatic control of a process for the thermal gasification of hydrocarbons with oxygen and water vapor
FR3109104B1 (en) 2020-04-14 2022-10-14 Psa Automobiles Sa Structural glue spray nozzle covered by a protective layer against the accumulation of structural glue residue

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4775949A (en) * 1986-06-27 1988-10-04 K-Tron International, Inc. Weigh feeding system with stochastic control
US4893262A (en) * 1986-06-27 1990-01-09 K-Tron International, Inc. Weigh feeding system with self-tuning stochastic control
US4954975A (en) * 1988-08-10 1990-09-04 K-Tron International, Inc. Weigh feeding system with self-tuning stochastic control and weight and actuator measurements
WO2012020154A1 (en) * 2010-07-29 2012-02-16 Universidad De Malaga Monitoring and control system and method for a distillation column
ES2374931A1 (en) * 2010-07-29 2012-02-23 Universidad De Málaga Monitoring and control system and method for a distillation column

Also Published As

Publication number Publication date
FR2003701A1 (en) 1969-11-14
DE1912061A1 (en) 1969-10-02
NL6803525A (en) 1969-09-16
CA950561A (en) 1974-07-02

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