Fluidised bed temp control - by use of fuel/air supply lines - in base of bed

摘要

Liquid or gaseous fuel is introduced and burnt at various points distributed over the base of the fluidised bed furnace, the inlet points being at the level of the base. Pref. outlet of each fuel/air supply line opens into a recessed trough of refractory material, entering through one vertical wall opposed by a curved upwards sloping surface. System is suitable for high temp. units, e.g. for calcining Ca phosphate, and gives improved temp. uniformity.