System for producing energy at a pulp mill

Details System for producing energy at a pulp mill System for producing energy at a pulp mill

2003-06-06

2010-02-16

Rinehart, Kenneth B (Department: 3743)

Furnaces

Process

Supplying fluid

C110S238000, C110S208000, C110S295000, C122S00700A

Reexamination Certificate

active

07661376

ABSTRACT:
A spent liquor recovery boiler system including a boiler having a water/steam circulation system with superheaters and a furnace for recovering energy and chemicals from spent liquor combusted therein, the walls of the boiler are formed of a plurality of water-cooled tubes connected to the water/steam circulation system. The system is provided with at least one cavity having walls formed of water-cooled tubes connected to the water/steam circulation system, means for combusting a fuel and at least one outlet for discharging combustion gases to the boiler, the interior of the at least one cavity being provided with heat exchanger means for final superheating of the steam generated in the boiler, said heat exchanger means being connected to the superheaters of the boiler.

REFERENCES:
patent: 2606103 (1952-08-01), Hamm
patent: 4676177 (1987-06-01), Engstrom
patent: 5454980 (1995-10-01), Schlueter et al.
patent: 5509997 (1996-04-01), Kuusio et al.
patent: 5855736 (1999-01-01), Pikkujämsätet et al.
patent: 0 614 500 (2007-01-01), None
patent: 60-105802 (1985-06-01), None
patent: WO 92/18690 (1992-10-01), None
patent: WO 03/095738 (2003-11-01), None
International Search Report dated Sep. 1, 2003.
Johan Nygaard, Sodapanna med extern overhettare (Kraft Recovery Boiler With External Superheater), Mar. 1998, 69 pages total, (English Summary at pp. 5-7).

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