| 摘要 |
In the operation of a slagging combustor, including an apertured baffle defining part of a cylindrical combustion chamber having a head end which includes a nozzle for injection of sulfur-containing particulate carbonaceous material to be combusted in a whirling oxidant flow field, there is injected a particulate sulfur sorbent at the aperture of the baffle towards the nozzle to react with released sulfur. The sulfur sorbent is injected into the combustion zone from a location near the exit end thereof. Fuel is injected near the center of the head end. A relatively fuel-rich recirculation zone is established and maintained along the longitudinal axis of the combustion chamber surrounded by a relatively oxygen-rich annular region. Sorbent mixes intimately with, and flows co-currently with, recirculating gases, generally toward the head end of the combustion zone, whereby the mixture of sorbent and gaseous products of combustion are maintained at temperatures and stoichiometric conditions favoring conversion of sulfur to compounds that dissolve in the molten slag.
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