Understand Freeze-Condensation Vacuum Systems
James R. Lines
Placing a freeze-condenser ahead of an ejector system offers several advantages. Here's a look at what such units can do.
Chemical Engineering Practice
Avoid Internet Pitfalls
Tim Headley
When developing your website, take these preventative measures to steer clear of any potential lawsuits.
Ensure Proper Design and Operation of Multi-Pass Trays
Mark Pilling
To function properly at optimum capacity and efficiency, multi-pass trays must be designed so that the liquid and vapor flows are properly balanced. This article provides guidance on how to achieve that.
Safe Handling of Heat-Transfer Fluids
Gaston Arseneault
Options abound, but operators need to balance performance and safety considerations.
Reduce Risk When Sourcing Abroad
Gregory T. Benz, Ling Du
Purchasing lower-cost process equipment from vendors in developing nations can be an attractive proposition in times of economic austerity. When sourcing outside local channels, keep the points discussed here in mind to avoid costly problems that go...
Design Reactors via CFD
Ahmad H. Haidari, Andre Bakker, Elizabeth M. Marshall
Using computational fluid dynamics to design commercial-size batch and continuous reactors can eliminate subjective experience and empiricism, leading to better-designed, more-efficient units.
Get More Out of Single-Stage Distillation
Ernest A. Perkins , Ryan C. Schad
Try these practical ways to boost capacity, increase product quality or reduce cycle time in batch and continuous systems.
Ease Control Valve Selection
Kiran Nair, Liyakat Jaffer, Meredith Chapeaux, Sheetal Patel, Trevor Bishop
With so many types and options available, choosing the right control valve can seem daunting. Selection can be simplified by considering the process fluid, the service requirements, how the various valves function, and seeing how each valve will...
Reduce Dust Explosions the Inherently Safer Way
A. G. Dastidar, Faisal I. Khan, P. R. Amyotte
This article is aimed at the development of a framework for dust explosion prevention and mitigation that explicitly incorporates the principles of inherent safety. As distinguished from engineered and procedural safety features, inherent safety...
From Bench to Plant: Scale Up Specialty Chemical Processes Directly
Ron Leng
Many batch operations can be scaled up directly from the bench to the plant by developing the process and performing lab testing with the scaleup in mind.
Maximize the Performance of Your Spray Nozzle System
Christine Pagcatipunan, Rudi Schick
Use these techniques to select, troubleshoot and maintain spray nozzles for optimal results.
Dividing-Wall Columns Find Greater Appeal
Gerald Parkinson
Conceived more than seven decades ago, dividing-wall columns are now only gaining widespread acceptance. The reasons— the drive to save energy and advances in computer technology that have overcome the burden of doing complex column internal designs.
Form Nanoparticles via Controlled Crystallization
Robert J. Fisher, Thomai Panagiotou
This continuous bottom-up approach allows precise control of the crystallization process to achieve size, distribution and quality goals, as well as realize the benefits of process intensification.
Save Energy Through Automation
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>
Select Heat-Transfer Fluids for Low-Temperature Applications
Satish C. Mohapatra
Consider such factors as thermophysical properties, toxicity, environmental concerns, and economics when choosing a fluid.
Evaluate Temperature Gradients in Fired Heaters
Alan Cross
Use this method to predict the temperature of the flue gas leaving the radiant section of a direct-fired process heater.
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