Handling of difficult coals
This four-part study looks into the choice of criteria best suited to understanding and predicting the behaviour of coal when fed into thermal power plants of less than 50 MWth. Choice of criteria goes hand in hand with development of means to assess them and thus compare and classify them as to their handling. Part 1 covers what is already known about coal handling. In the literature two approaches are evident, coal being treated either as a soil or as a set of particles. Factors are examined which enable or might enable handling behaviour of coals to be characterised. Part 2 is devoted to tests, analyses and observations of industrial scale installations, resulting in better understanding of plugging and segregation. Part 3 is devoted to the design and development of two test installations to enable coal behaviour to be evaluated in a conveyor. These tests offer the advantage that they can be carried out on coal as it is, requiring a sample of only 2.5 tonnes for each percentage point of water content examined. Part 4 comprises laboratory and in situ tests to investigate the behaviour of pre-dried colliery sludge in the 2.8 m3 test hopper. Limits to the use of such tests or of products requiring particularly delicate handling are identified.
Bibliographic Reference: EUR 14131 FR (1992) 61 pp., MF, ECU 4, blow-up copy ECU 10.50
Record Number: 199210553 / Last updated on: 1994-12-02
Original language: fr
Available languages: fr