An experimental facility has been built at Glasgow Caledonian University to investigate gassolid flow performance at elevated pressures. The system allows conveying conditions to be varied over a wide range of gas flow rates and conveying line pressure drops when feeding into a vessel at constant pressures ranging from atmospheric pressure to 20 bar,g. Recent work, in conjunction with the Coal Technology Development Division of British Coal, has focused on an investigation of conveying performance of coal and minimum conveying conditions. This paper reports on work carried out at Glasgow to analyse and model the conveying conditions under which coal can be conveyed when feeding into high pressures. Results from the test work and subsequent analysis and modelling are presented and discussed. The paper also discusses the relevance of the work particularly with regard to thermal power generation.
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