Publication Name: Energy, Economics and Environment - Gippsland Basin Symposium (June 1992)
Authors: R.M. Borsaru, N.G. Cutmore, A.L. Ottrey, B.D. Sowerby
Date Published: June 1992
Number of Pages: 8
Abstract:
Moisture and ash are the two most significant coal quality parameters for combustion. They determine the energy content which can be derived from the coal and the problems arising from the presence of ash in the process (eg ash fouling, corrosion, erosion, particulate emissions and ash disposal). Extensive pilot-scale testing and full-scale experience has shown that specific coal/ash constituents (eg Na20/ash ratio, acid-soluble aluminium, silica, sulphur contents, etc.) are also important for the behaviour of Latrobe Valley brown coal during combustion, ash formation, deposition and removal of ash in precipitators and furnace ash hoppers. This paper discusses the range of on-line analysis techniques which have been investigated and their application to low rank coal analysis. Preliminary results from a joint SECV/CSIRO project which aims to develop two separate advanced instrument systems are also presented.