Method and arrangement in cooling medium circulation of a...

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

F - Mech Eng,Light,Heat,Weapons

23

M

F23M 5/08 (2006.01) D21C 1/00 (2006.01) D21D 1/00 (2006.01) F23G 7/04 (2006.01)

Patent

CA 2170924

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.

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