D - Textiles – Paper – 21 – C
Patent
D - Textiles, Paper
21
C
D21C 11/12 (2006.01) F22B 31/04 (2006.01) F23G 5/46 (2006.01) F23G 7/04 (2006.01)
Patent
CA 2146561
A method and apparatus for use in the pulp industry for recovering heat in the spent liquor recovery boiler, whereby the boiler walls (12, 14) are formed of water- cooled tubes connected to the water/steam circulation system of the boiler. The lower section (22) of the boiler is defined by water tubes (28) connected to a separate water circulation system (23) of a forced type. Thus, heat is preferably recovered in the lower section of the boiler by a separate water circulation system having a lower pressure than in the water/steam circulation system of the boiler.
Andritz-Ahlstrom Oy
Gowling Lafleur Henderson Llp
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