System for controlling the flow pattern of a recovery boiler

Details System for controlling the flow pattern of a recovery boiler System for controlling the flow pattern of a recovery boiler

2006-07-04

2006-07-04

Rinehart, Kenneth (Department: 3749)

Furnaces

Refuse incinerator

For liquid refuse

C110S297000, C110S348000

Reexamination Certificate

active

07069866

ABSTRACT:
The invention relates to a system for controlling the flow field in a soda recovery boiler, said soda recovery boiler comprising at least a furnace (1), primary air ports (4) in the lower part of the furnace, so-called secondary combustion air ports (5) disposed above these, black liquor spray nozzles (6) placed similiarly above these and combustion air ports (5b) disposed above the black liquor spray nozzles (6). According to the invention, the soda recovery boiler is provided with substantially thin jets (7, 7a,7b) supplying energy into the flow field and having a jet pressure in the nozzle equal to at least twice the jet pressure in the combustion air ports (5, 5b).

REFERENCES:
patent: 4940004 (1990-07-01), Jansen
patent: 5007354 (1991-04-01), Uppstu
patent: 5715762 (1998-02-01), Reilly
patent: 5724895 (1998-03-01), Uppstu
patent: 5771817 (1998-06-01), Olausson et al.

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