Triangular cycling occurs in a pressure loop

Install a flow meter in the recycle, cascade the flow set point with a pressure control loop. With proper tuning, the valve characteristics are lost in the flow control loop, which should be tuned fast with PI.

Simulation Improves Polyester Manufacturing

DuPont Polyester Technologies (DPT) realizes the benefit of CFX computational fluid dynamics (CFD) modeling software, which provides a multi-size bubble model and manages the complexities involved with modeling a rotating agitator.

Wireless | The brave new world of RFID | Chemical Processing

Radio-frequency identification (RFID) technology, writes Agnes Shanley, is not only being evaluated or implemented by more companies for supply-chain management and security, it lets companies spy on employees or customers.

Author: Agnes Shanley

Complex Fluids Engineering

Author: Alan E. Hodel, Internet Columnist

Get Up to Speed on Drives

Motor drives may be ubiquitous, but do you really understand how they work?

Avoid Assembly Hassles

Skid-mounted systems can minimize construction headaches and expedite projects.

Offshoring and Layoffs: How About A Little Decency?

Avoid Errors | Chemical Processing

You can reduce human error in chemical processing plant instrumentation and operation by understanding the types and sources of error.

More Guidance Needed On Dust Explosions | Chemical Processing

Avert Oxidation

Nitrogen can serve as an inert barrier to prevent heat-transfer fluid from contacting atmospheric air through the expansion tank

Author: Zak Shums,* Liquid Process Systems Inc.