Optimum control of fluidised bed dryer by electrical capacitance tomography. Part 2: Control strategy and results

• Autorzy: Wang H. G. , Senior P. , Mann R. , Yang W. Q.
• Języki publikacji: EN

Abstrakty

EN

This paper presents closed-loop control of a fluidised bed drying process based on online moisture measurement by ECT. In this Part, the control strategy is discussed and some results from batch drying processes are given and compared with no feedback control. The fluidisation velocity is estimated by a semi-empirical function based on the measured water content and the information is sent to a controller to adjust the air flow rate of the fluidised bed. To evaluate the drying process, the thermal efficiency is given and results are compared based on this parameter.

Słowa kluczowe

EN

fluidised bed dryer; closed loop control; process optimization

• Wydawca: Wydawnictwo Politechniki Łódzkiej
• Czasopismo: Zeszyty Naukowe. Elektryka / Politechnika Łódzka
• Rocznik: 2009
• Tom: z. 114
• Strony: 29--33
• Opis fizyczny: Bibliogr. 5 poz.

Twórcy

autor

Wang H. G.

autor

Senior P.

autor

Mann R.

autor

Yang W. Q.

• School of Electrical and Electronic Engineering, The University of Manchester, UK

Bibliografia

• GINER S.A., DEMICHELIS A., (1988), Evaluation of the thermal efficiency of wheat drying in fluidized beds: influence of air temperature and heat recovery, Journal of Agriculture Engineering Research, Vol. 41, pp 11-23.
• KUNII D., LEVENSPIEL O., (1991), Fluidization Engineering, Butterworth-Heinemann, Boston, p 69.
• VAN SCHAGEN K., RIETVELD L., BABUŠKA R., BAARS E, (2008), Control of the fluidised bed in the pellet softening process, Chemical Engineering Sciences, in Press.
• VOUTETAKIS S.S., SEFERLIS P., PAPADONPOULO S., KYRIAKOS Y., (2006), Model-based control of temperature and energy requirements in a fluidised furnace reactor, Energy, Vol. 31, pp 2082-2091.
• WANG H.G., SENIOR P., MANN R., YANG W. Q. (2008), Optimum control of fluidised bed dryer by electrical capacitance tomography, Part 1: Moisture measurement, 5th International Symposium on Process Tomography in Poland, 25-26 Aug. 2008, Zakopane, Poland.