Mass flow and particle size monitoring of pulverised fuel vertical spindle mills

• Autorzy: Archary H. , Schmitz W. , Jestin L.

Identyfikatory

DOI

10.1515/cpe-2016-0016

• Języki publikacji: EN

Abstrakty

EN

The first step towards condition based maintenance of the milling plant is the implementation of on- line condition monitoring of the mill. The following paper pr esents and analyses methods of monitoring the key performance factors of a vertical spindle mill that is suited for implementation on older power stations, i.e. the quantity (mass flow rate) and quality (particle fineness) of the pulverised fuel produced by the mill. It is shown herein that the mill throughput can be monitored on-line using a simple mill energy balance that successfully predicts the coal the roughput within 2.33% as compared to a calibrated coal feeder. A sensitivity analysis reveals that the coal moisture is a critical measurement for this method to be adopted as an on-line mass flow monitoring tool. A laser based particle size analyser tool was tested for use in the power plant environment as an on-line monitoring solution to measure pulverised fuel fineness. It was revealed that several factors around the set-up and operation of the instrument have an influence on the perceived results. Although the instrument showed good precision and repeatability of results, these factors must be taken into account in order to improve the accuracy of the reported results before the instrument can be commissioned as an on-line monitoring solution.

Słowa kluczowe

EN

mill; pulveriser; condition; monitoring

PL

młyn; rozpylacz; monitorowanie

• Wydawca: Komitet Inżynierii Chemicznej i Procesowej Polskiej Akademii Nauk
• Czasopismo: Chemical and Process Engineering
• Rocznik: 2016
• Tom: Vol. 37, nr 2
• Strony: 175--197
• Opis fizyczny: Bibliogr. 20 poz., rys.

Twórcy

autor

Archary H.

• Eskom Holdings SOC Ltd., South Africa

autor

Schmitz W.

• University of the Witw atersrand, South Africa

autor

Jestin L.

• University of Cape Town, South Africa

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