Posts Tagged ‘lambda tuning’

Is Loop Tuning an Art or Science?

Posted in Support Services, Variability Management on Tuesday, February 17th, 2015. 2 comments so far
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This interesting question was posed in the LinkedIn Process Control group. You’ll need to join this 31,000+ member group to see it, but the exact question was: Process Control Tuning – is not just science but an art. The real talent to be process control engineer lies in the fact how deep he understands the […]

PID Control in 3-Phase Oil and Gas Separation

Posted in Oil & Gas on Tuesday, January 27th, 2015. 2 comments so far
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The PID controller entry in Wikipedia highlights the beginning of proportional+integral+derivative control going all the way back to the 19th century: PID controllers date to 1890s governor design.[2][3] PID controllers were subsequently developed in automatic ship steering. One of the earliest examples of a PID-type controller was developed by Elmer Sperry in 1911,[4] while the […]

Solving Thermal Oxidizer Interacting Loops

Posted in Chemical, Process Optimization, Variability Management on Tuesday, December 2nd, 2014. 3 comments so far
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Author: Sonal Gilani In an earlier post, Improving Energy Efficiency in Thermal Oxidizers, I highlighted how switching control loops from manual to automatic mode improved overall efficiency. Emerson’s James Beall shared a second story on this thermal oxidizer equipment, which is used to destroy the waste gases containing volatile organic compounds and hazardous air pollutants […]

Methodology for Solving Control Loop Problems

Posted in Control Strategies, Oil & Gas, Process Optimization, Variability Management on Friday, October 31st, 2014. 2 comments so far
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This time of year, after our big Emerson Exchange conference, I like to go back and see what sessions I missed to be able to be able to recap for you. I caught up with Emerson’s Mark Coughran, whom you may recall from many control performance-related posts. He co-presented a paper, Solve Control Loop Problems […]

Solving Boiler Drum Level Swings

Posted in Energy, Process Optimization, Variability Management on Tuesday, September 9th, 2014. 2 comments so far
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Effectively controlling the drum level in an industrial boiler helps to maximize overall energy efficiency. When the drum level varies it can not only impact boiler efficiency, but overall reliability due to unplanned shutdowns. Emerson’s Mark Coughran shared a story with me about a major North American university that was having difficulty with one of […]