Title:
【発明の名称】炭素質燃料の脱硫
Document Type and Number:
Japanese Patent JP2967394
Kind Code:
B2
Abstract:
First, nitrogen oxides are reduced by firing coal in substoichiometric air conditions in a first stage oxidation unit of a combustor to reduce NOx from fuel bound nitrogen. Hydrated lime, Ca(OH)2, is introduced into the first stage oxidation unit to produce calcium sulfide. The calcium sulfide becomes tied up in a slag eutectic which is removed prior to entry of the fuel gas to a second stage oxidation unit at the entrance of a furnace where additional preheated air is added to the fuel gas.
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Inventors:
ROBAATO EE ASHUWAASU
Application Number:
JP27977194A
Publication Date:
October 25, 1999
Filing Date:
October 20, 1994
Export Citation:
Assignee:
FURORIDA PAWAA CORP
International Classes:
C10L9/00; C10L9/02; C10L10/00; F02M31/00; F23C99/00; F23D1/00; F23D14/20; F23J7/00; F23L7/00; (IPC1-7): F23C11/00; F23D1/00; F23D14/20
Attorney, Agent or Firm:
Fukuda Hideyuki