Method and arrangement in cooling medium circulation of a recove

Details Method and arrangement in cooling medium circulation of a recove Method and arrangement in cooling medium circulation of a recove

1996-03-19

2000-04-11

Bennett, Henry A.

Furnaces

Process

Incinerating refuse

110234, 110238, 162 47, F23G 704

Patent

active

060476494

ABSTRACT:
The object of the present invention is a method in cooling medium circulation, whereby the recovery boiler comprises a furnace limited by wall tubes provided with cooling medium circulation and substantially horizontal floor tubes; a supply system for combustion air; and a supply system for black liquor, whereby a so-called smelt layer is formed in a combustion process on the floor composed of the floor tubes. At least in some of the floor tubes, at least on a section of their length, is arranged a longitudinal flow--particularly a spiral flow--for mixing the liquid and steam phases of the cooling medium.

REFERENCES:
patent: 2249587 (1941-07-01), Tilghman et al.
patent: 2279548 (1942-04-01), Bailey
patent: 3088494 (1963-05-01), Koch et al.
patent: 5007354 (1991-04-01), Uppstu
patent: 5478440 (1995-12-01), Paju
patent: 5603803 (1997-02-01), Raak

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