Combustion air system for recovery boilers, burning spent...

Details Combustion air system for recovery boilers, burning spent... Combustion air system for recovery boilers, burning spent...

2007-04-24

2007-04-24

Rinehart, Kenneth (Department: 3749)

Furnaces

Refuse incinerator

For liquid refuse

C110S348000, C162S031000

Reexamination Certificate

active

10747293

ABSTRACT:
An arrangement is disclosed for supplying an air jet form to the furnace of a recovery boiler, where the furnace has a front wall, a rear wall and side walls. Black liquor spraying devices are disposed on the furnace walls at one or several levels of the furnace. A plurality of air ports are located at several horizontal levels for introducing air into the furnace from an air supply. In the arrangement for the secondary air flows, two horizontal air levels at different elevations are arranged above the lower primary levels and below the black liquor sprayer. Secondary air is supplied from two opposite walls and the air ports from each of the two levels are located so that the air jets are introduced in an interlaced pattern having an even number of jets on one opposite wall and an uneven number of jets on the other opposite wall. The air jets of said at least two air levels are located substantially one above each other in substantially vertical rows.

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International Search Report dated Jul. 8, 2002.

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