Dynamic modelling of vacuum circulation process for steel decarburization

1995 ◽  
Vol 92 (4) ◽  
pp. 493-502
Author(s):  
B. Kleimt ◽  
S. Köhle
Keyword(s):  
Process Control ◽  
Good Accuracy ◽  
Dynamic Modelling ◽  
Important Process ◽  
Ladle Slag ◽  
Plant Construction ◽  
Oxygen Pickup ◽  
Steel Decarburization ◽  
Equilibrium Content

A dynamic matbematical model of the vacuum circulation process for steel decarburization was developed. [t comprises the process parts of steel circulation decarburization reaction, adjustment of vessel pressure with its influence on the carbon equilibrium content, and the oxygen pickup from the ladle slag. The model allows to simulate the behaviour of all important process values with good accuracy and can be used for optimization of plant construction and operation as well as for improvement of process control.

Dynamic Modelling and Process Control of ZnS Precipitation

2006 ◽  
Vol 41 (6) ◽  
pp. 1025-1042 ◽  
Author(s):  
J. König ◽  
K. J. Keesman ◽  
A. Veeken ◽  
P. N. L. Lens
Keyword(s):  
Process Control ◽  
Dynamic Modelling

Global Simulation of CZ and FZ Bulk Crystal Growth: from Quasi-Dynamic and Dynamic Modelling to Process Control and Crystal Quality Optimization

2019 ◽  
Vol 18 (1) ◽  
pp. 935-943 ◽  
Author(s):  
Francois Dupret ◽  
Roman Rolinsky ◽  
Liang Wu ◽  
Fabrice Loix ◽  
Arnaud De Potter ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Process Control ◽  
Dynamic Modelling ◽  
Bulk Crystal ◽  
Crystal Quality ◽  
Quality Optimization ◽  
Bulk Crystal Growth ◽  
Global Simulation

scholarly journals User-Initiated Notification: A Concept for Aiding the Monitoring Activities of Process Control Operators

1996 ◽  
Vol 40 (4) ◽  
pp. 283-287 ◽  
Author(s):  
Stephanie Guerlain ◽  
Peter Bullemer
Keyword(s):  
Working Memory ◽  
Process Control ◽  
Memory Load ◽  
Control Environment ◽  
Important Process ◽  
Working Memory Load ◽  
Plant Personnel ◽  
Monitoring Activities ◽  
Set Up ◽  
Control Operators

Monitoring activities in a process control environment are quite unique depending on the current situation and the operator's current understanding of that situation. Furthermore, the operator may be required to monitor multiple simultaneous events over potentially long periods of time. Currently, operators must periodically scan displays to gather such information, or manipulate the alarm or control system in ways not originally intended in order to gather that information as appropriate. Furthermore, if the monitoring activities span multiple operating shifts, then there is the potential for operators to forget to communicate these requirements at shift change. Despite the uniqueness of the situations that will require process events to be monitored, it is hypothesized that there is a limited set of conditions that can be pre-defined in a tool that will allow operators to set up their own monitoring “agents” according to their current diagnostic needs. Such a tool is predicted to decrease the working memory load of operators, and reduce the time it takes them to detect important process changes (or lack of them). Furthermore, it is proposed that this concept is extensible to other plant personnel and to other domains that have similar monitoring requirements. Although some potential pitfalls can be predicted with the introduction of this tool, the number of predicted benefits warrant the further exploration of this concept. This will be the next step in our design process.

INSTRUMENTATION - Mass Spectrometry Process Control

1956 ◽  
Vol 48 (2) ◽  
pp. 81-84
Author(s):  
William Priestley ◽  
B. Dudenbostel, Jr.
Keyword(s):  
Mass Spectrometry ◽  
Process Control
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