Compact Heat Exchangers, Part 2: Using Plate Exchangers in Heat Recovery Networks
Christopher Haslego, Graham T. Polley
Here's how to incorporate plate-and-frame exchangers into new plant design using pinch analysis.
Chemical Engineering Practice
Computationally Evaluate Self-Reactivity Hazards
Edward S. Shanley, Michelle R. Murphy, Surendra K. Singh
Here is a method that rates the tendency of new compounds to self-explode without the need to perform extensive laboratory tests.
Screen Your Facilities for Chemical Reactivity Hazards
Use this straightforward approach to check which of your sites are likely to have chemical reactivity hazards that need to be managed.
Production Modeling for Multimodal Operations
Jeffrey D. Kelly
Two new views for production modeling are introduced - production flow networks and production flow maps - that focus on unit operations and feedstocks, respectively.
Guidelines for Crystallizer Selection and Operation
Wayne Genck
Continuous crystallizers serve a wide range of applications in the chemical process industries. Optimize system performance by heeding these practical design and operating principles, which apply to the forced circulation (FC), draft-tube-baffle (...
Beware of Pitfalls of Carbon Dioxide Freezing Prediction
Steve Chafin , Tim Eggeman
Carbon dioxide freezing in a cryogenic system can result in plugging and other operational problems. This article offers insights into the carbon dioxide freezing phenomenon.
Improving the Reliability of Mechanical Seals
Michael Huebner
With a better understanding of seals, their selection, material considerations, and operation requirements, users can greatly improve equipment reliability and reduce operating costs.
Pipeline Pressure Drop: A New Design Correlation
Roger Gilmont
A linear equation has been derived to accurately calculate the flowrate of fluids in the laminar and turbulent regions, and to derive an equation for use in the transitional regions.
Streamlining the Validation Process
Robert Mackey, Tim Flanigan
Today, validation is no longer an afterthought for the design and construction of a new or renovated process or facility. It is, in fact, recognized as an integral part of the total project. Fully integrated services are now available to ensure a...
Assess the Performance of Positive-Displacement Pumps
AIChE's Equipment Testing Procedures Committee
Here's how to evaluate rotary pumps— gear, lobe, vane and multiple-screw designs— regardless of whether the material being handled is a Newtonian or non-Newtonian fluid.
Chemistry Simulation Drives Clean Technology Progress
Scott A. Drennan
Here's how to determine when to use computational fluid dynamics (CFD) to simulate the detailed chemistry of reacting flows for combustion and chemical processes.
Process Simulation from the Ground Up
David Hill
Today's process simulators produce graphical, data-filled and detailed results that can improve the effectiveness of the engineers who use them.
Cooling Towers, Part 2: Operating, Monitoring and Maintaining
Loraine Huchler
Process plants often use evaporative cooling towers to reject heat to the atmosphere.This article explains the basics of cooling tower operation.
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.
Developing Crystallization Processes
Christianto Wibowo
With solid-liquid equilibrium as its foundation, this systematic approach makes it easy to identify operating regions and theoretical yield to maximize the desired product.
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.
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