Process Control

Save Energy Through Automation

January
2010
Instrumentation
Douglas C. White
Identifying the right automation investments — those with low costs and high impacts — can result in millions of dollars in energy savings for petrochemical plants. <br>

Take the Tedium Out of Writing Process Descriptions

February
2001
Instrumentation
Michael J. Gentilcore
Setting up a special function and a shorthand system on a spreadsheet can improve the descriptions needed for implementing a process control system, while minimizing the monotony in writing them.

Applying Bus Technologies in Process Control

December
2002
Instrumentation
Ed Smigo
Fieldbus technologies have become increasingly popular in process control applications. This article highlights the practical applications and economics of various buses, so that an engineer can choose the best one for his or her process.

Easily Assess Complex Safety Loops

March
2001
Instrumentation
Lawrence  Beckman
Many safety instrumented systems rely on dissimilar redundant field devices, and this can complicate required analyses. These equations will enable field personnel to handle such situations readily.

Control and Optimize Nonlinear Systems

February
2003
Instrumentation
Roberto Z. Tantalean, Andrew C. Burden, Pradeep B. Deshpande
Turbocharging a contrained model predictive controller (CMPC) with fuzzy logic allows CMPCs to be applied over nonlinear systems

Tune Control Loops for Minimum Variability

January
2002
Instrumentation
Lanny A. Robbins
The Robbins tuning rules can reduce the variability of control loop response to about 60% of that observed with Ziegler-Nichols tuning rules.

Process Control for Microreactors

August
2001
Instrumentation
Don  Humbert, Lech  Znamirowski, Sarma Vrudhula, Olgierd A. Palusinski
Field-programmable analog arrays coupled with microreactor technology promise to change the way plants are built, as well as the methods by which their processes are designed and controlled.

Matching Your Process Constraints Using Dynamic Simulation

December
2003
Information Technology
Miquel A. Alos, Jose J. Macias-Hernandez, Iban Grau
A rigorous dynamic process simulator can be used to evaluate alternative control strategies for an exothermic reacting process in order to improve its safety and product quality.

Step into the Virtual Plant

February
2002
Instrumentation
Mark S Sowell III, Gregory K McMillan, Michael M Mansy
The ability to warehouse process and control system knowledge offers a vast potential for improved operations by sharing a common source of information and avoiding data duplication.

Use Model-Predictive Control to Improve Distillation Operations

January
2008
Instrumentation
Robert J. Conroy, Daniel R. Webb, Robert D. Rounding, Umesh Mathur
This methodology, based on steady-state and dynamic simulation, can be used to develop the necessary models— and avoid disruptive and costly step testing to the extent feasible.

Teach Yourself the Basics of Aspen Plus

January, 2011
Aspen Plus is on of the most popular process simulation software programs used industrially and academically. Though the software is available at many corporations and universities, there are no textbooks which are dedicated to teaching the step-by-step use of the software. This book is designed to...

Reactive Distillation Design and Control

October, 2008
After an overview of the fundamentals, limitations, and scope of reactive distillation, this book uses rigorous models for steady-state design and dynamic analysis of different types of reactive distillation columns and quantitatively compares the economics of reactive distillation columns with...

Distillation Design and Control Using Aspen Simulation

April, 2006
As the world continues to seek new sources of energy, the distillation process remains one of the most important separation methods in the chemical, petroleum, and energy industries. And as new renewable sources of energy and chemical feedstocks become more universally utilized, the issues of...
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