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This is the final report on work carried out under a research contract to address the specific practical problems encountered in the field of mechanical stoker combustion which were identified as having the common theme of aerodynamics. In particular, measures investigated were required to address problems involving inadequate combustion performance and excessive erosion wear of boiler surfaces. The strategy of the project was to operate in a way that would allow, without duplication, any potential solution to be studied, while focusing on the priority issues. In practice, three areas of work grew into major self-contained studies, while a further six technical areas were subject to smaller studies. Generic investigations were undertaken which related to all of the developments. The provision of well-characterized (in aerodynamic terms) test equipment and combustion plant for the developments involved full mass and energy balance tests both on a sprinkler static grate stoker and on a chain grate stokes; these units were subsequently used to demonstrate developments and operating practices relevant to the project objectives. A thorough theoretical consideration of boiler erosion wear was undertaken and allowed the development of a robust but simple mathematical model which was used in determining the potential effect of specific developments on aerodynamic parameters.

Additional information

Authors: BRITISH COAL CORPORATION, British Coal Corporation, Cheltenham (GB)
Bibliographic Reference: UR 15656 EN (1997) 367pp., FS, ECU 65.50
Availability: Available from the (2)
ISBN: ISBN 92-827-8909-8
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