A Real-Time Approach to Process Control, 3rd Edition by William Y. Svrcek, Donald P. Mahoney, Brent R. Young

By William Y. Svrcek, Donald P. Mahoney, Brent R. Young

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Y. P. (1971) An experience in the selection of a computer simulation technique. Simulation, 17(6), 245–246. C. et al. (1967) The SCi Continuous System Simulation Language (CSSL). Simulation, 9(6), 281–292. D. (1986) Survey of existing systems for the dynamic simulation of industrial processes. Modeling, Identification, and Control, 7, 71–81. Ausain, A. (1986) Chemical Process Simulation, John Wiley & Sons, New York, pp. 201. Marquardt, W. (1991) Dynamic process simulation – recent progress and future challenges, in Proceedings of CPCIV (eds Y.

21 (a) Typical modern sliding stem control valve assembly; (b) single-acting spring return actuator and digital valve positioner for a modern sliding stem control valve (Reproduced by permission of Emerson Process Management). 22 Characterized cages for globe-style valve bodies (Reproduced by permission of Emerson Process Management). 4, Q is the volumetric flow rate and P is the pressure drop across the valve, SG is the relative density compared to water, and Cv is the valve coefficient. Cv is defined by convention in field or imperial units as the number of US gallons that will pass through a control valve in 1 minute, when the pressure differential across the valve is 1 psi.

Near infrared (NIR) spectroscopy has become very widely used as a general-purpose inferential composition measurement technique and nuclear magnetic resonance (NMR) spectroscopy looks like it could go the same way in a decade or so. The oil industry is also a big user of analysers for vapour pressure, flash point, distillation and cloud point. However, because of the specialized and detailed nature of these instruments, which are more the domain of physical chemistry, the reader is referred to the Process Industrial Instruments and Controls Handbooks by Considine [3] and McMillan and Considine [13] and the specialist book Process Analyzer Technology by Clevett [14] for further details.

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