Inderbitzin, Martin David (2006) Design review and analysis of Collinsville power station coal handling plant. [USQ Project]
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Abstract
Collinsville Power Station is a 190 MW coal fired power station in Northern
Queensland. The station consists of 5 generating units. Collinsville power station has
been experiencing large problems with wet coal in its coal handling plant. These
problems have led to a reduction in plant availability due to blockages. Wet coal
with a high level of fines is adhesive and consequently sticks and builds up on items
of plant. The blockages caused by wet coal can lead to generator unit trips.
The identification and subsequent reduction or elimination of problems associated
with wet coal is highly desirable as it would also result in a reduction in the number
of unit trips and present a significant financial benefit to Collinsville Power Station
as unit trips are a significant cost.
A detailed review of the coal handling plant was carried out. Significant problems
that were identified included the coal sampling, testing and reporting procedures as
well as plant repairs and maintenance issues. It was found that particular items of
plant were more susceptible to coal blockage. Part of the solution process was the
use of Computational Fluid Dynamics to analyse coal flow within a specific item of
plant.
The review of the plant discovered numerous issues which need to be addressed so as
to gain increased plant performance. Both materials handling and plant management
solutions have been recommended within this dissertation. The CFD analysis was
very expensive in terms of time and computational power.
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