F - Mech Eng,Light,Heat,Weapons – 27 – B
Patent
F - Mech Eng,Light,Heat,Weapons
27
B
F27B 1/10 (2006.01) F22B 31/00 (2006.01) F23L 1/00 (2006.01)
Patent
CA 2622163
A combustion air system particularly useful for Kraft process recovery boilers or soda process recovery boilers has a level of liquor air ports located above the black liquor guns, and multiple levels of tertiary air formed by substantially vertically aligned tertiary air ports located above the black liquor guns. The liquor air ports and the tertiary air ports are on the same opposing walls of the furnace and are substantially vertically aligned with air ports in the same wall at different levels. The liquor air ports are located just above the black liquor guns, within a range of about 1/2 foot to about four feet. The tertiary air ports are laterally offset with respect to the tertiary air ports on the opposing wall of the furnace. The first tertiary air level is located a vertical distance in the range of about four feet to twelve feet above the elevation of liquor air ports, and the second and any additional tertiary air levels are located and spaced from an adjacent tertiary air level at regular spaced vertical intervals in the range of about four feet to eight feet. The vertically aligned and laterally offset tertiary air ports form a combustion air pattern of vertical sheets which travel across the width of the furnace to the opposing wall to carry smaller liquor particles to the walls of the furnace and reduce carryover and improve combustion efficiency.
Babcock & Wilcox Company The
Ridout & Maybee Llp
LandOfFree
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