Showing papers in "Chemical Engineering in 2010"

Recover Waste Heat From Fluegas

Abstract: The widespread use of recuperative burners to preheat combustion air has boosted efficiency throughout most of the heat processing industry. The savings in gas consumption pays for the equipment and the “carbon footprint” is reduced. However, for most industrial users, opportunities still exist for recuperating and putting to use much of the waste heat currently being exhausted from their facilities.

Improving Control Valve Performance

Abstract: I mprovements to the performance of basic, regulatory control systems have a great return on investment and are some of the least expensive control improvements to make [1]. Control valves have a major impact on control loop performance and, therefore, improvements in valve performance can have significant economic benefits. This article shows how poor control-valve performance can be identified and corrected to achieve these benefits. A plant example is used to demonstrate these methods. In addition to corrective actions, comprehensive control-valve specifications, based on process requirements for new applications, can provide quicker plant startups and immediate economic savings.