Metal wastage in fluidized beds for conventional and staged combustion
Stationary fluidised bed combustion is a clean and flexible technology for steam and power generation. For the success of this technology the erosion of the in-bed tubes must be low and controllable. The goal of this research was to reach a situation in which the in-bed tubes have a lifetime of at least five years. To reach this goal the project was divided into three interlinked phases concerned with: (i) the causes of the great difference in metal wastage between the British Renfrew installation and the TNO installation. Efforts were made to reduce gross circulation and develop techniques to give an accurate picture of particle streams in the fluidised bed; (ii) factors influencing erosion examined under conventional oxidising (super-stoichiometric) conditions; (iii) erosion under two-stage combustion. It has since been confirmed, at Hengelo, the Netherlands, that a fluidised bed boiler with a long-life tube bank can be suitable for different coals and limestone when attention is paid to the tube wall temperature and the gross circulation of bed material.
Bibliographic Reference: EUR 14372 EN (1993) 45 pp., MF, ECU 4, blow-up copy ECU 8.50
Record Number: 199310410 / Last updated on: 1994-11-29
Original language: en
Available languages: en