Control and Optimize Nonlinear Systems
Andrew C. Burden, Pradeep B. Deshpande, Roberto Z. Tantalean
Turbocharging a contrained model predictive controller (CMPC) with fuzzy logic allows CMPCs to be applied over nonlinear systems
Chemical Engineering Practice
Is Your Cold Lime Softener Effective?
Loraine Huchler
If your plant's utility system is experiencing problems, the culprit may be the clarifier. Understanding how to diagnose and correct off-spec clarifier operation will allow downstream units to function more efficiently and reliably.
Use Oxygen to Improve Combustion and Oxidation
Nancy C. Easterbrook, Reed J. Hendershot, Timothy D. Lebrecht
Substituting oxygen for air is often a low-cost, easy-to-implement option that can reduce capital costs, lower emissions, and improve process flexibility and reliability.
Reduce Your Compressed Air Costs
Bill Scales, Ron Marshall
Annual operating expenses for compressed air systems can exceed the equipment’s purchase price. Follow these seven steps to implement efficiency measures that yield cost reductions.
Easily Assess Complex Safety Loops
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.
Optimize Control Room Communications
Brad A. Walker, James E. Lenhart, Karen D. Smith
Faced with more distractions than ever, operators need an environment that is conducive for dealing with abnormal, as well as normal, situations. Effective control room design can help.
Hydrogen: Liability or Asset?
Dennis Vauk, Ian Moore, Nick Hallale
In a petroleum refinery, viewing hydrogen as an asset rather than a liability can lead to increased profits. The key is in the mindset. A typical investor uses money to make money. This article shows you how to use hydrogen to make money.
Handling Flammable Liquids
James C. Mulligan
Identify electrostatic hazards associated with liquid processing and understand the precautions available to control them.
Rotating Equipment
Kazim Akhtar
Protect compressors and turbines by using piping strainers and following the line procedures outlined in this article.
Scaling Fixed-Bed Catalyzed Processes
Jonathan H. Worstell
The new parameter introduced here will yield more meaningful results when a fixed-bed reactor is scaled up for process development or scaled down for plant support.
Understanding Steam Traps
James R. Risko
Steam trap failure can affect process operations and reduce profits. Choosing the right steam traps can improve reliability and reduce cost.
Select the Right Spray Nozzle
Peter Welander, Terra L. Vincent
Finding the proper nozzle for specific applications doesn't have to be difficult. By applying basic concepts of nozzle technology, you can create a droplet profile that best suits your needs.
Solve the 5 Most-Common Pneumatic Conveying Problems
Paul E. Solt
Does your system suffer from plugging? Bottlenecking? Abrasion? Poor venting? Degraded product? Here are remedies.
Should You Use Enhanced Tubes?
Graham T. Polley, Mohamad R. Jafari Nasr
Following this procedure to identify a basic exchanger geometry without performing a full exchanger design and to evaluate where and when heat transfer enhancement can be of benefit.
Fermentation Goes Large-Scale
Alex Patist, Aristos Aristidou , J. J. Hahn , Pim van Hoek
Designing an economically competitive and environmentally sustainable fermentation route means considering the downstream separations needed to capture the final product during the initial process design.
Formulating Production Planning Models
Jeffrey D. Kelly
Optimize petroleum and petrochemical plant production by understanding the mathematical modeling behind nonlinear planning models.
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