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US 7,070,174 B2Granted
Mixing apparatus for mixing gas in a closed reactor
AssigneeOutokumpu Technology Oy
InventorsStig-Erik Hultholm, Mikko Juusela, Launo Lilja, Bror Nyman
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AssigneeOutokumpu Technology Oy
InventorsStig-Erik Hultholm, Mikko Juusela, Launo Lilja, Bror Nyman
Estimating the term…
The invention relates to a mixing apparatus and a method for mixing gas in a closed mixing reactor, which uses gas as a process chemical with a high efficiency and where the content of pulverous solids in the solution is great. The aim is to obtain a flow in the reactor which sucks gas from above the surface of the liquid using rotating mixing devices in the centre of the reactor, and to mix said gas throughout the reactor capacity. The mixing apparatus of the invention comprises at least two mixers located at different heights, and on the same shaft. The upper mixer is equipped with a central plate attached to the shaft, with essentially vertical inner blades rising upwards and downwards and outer vanes directed outwards from the central plate, which are inclined from the horizontal. The lower mixer is equipped with a central plate attached to the shaft with vertical blades located on the outer edge.
A mixing apparatus for the suction of gas from above the surface of a liquid and for mixing it in a closed, vertical reactor equipped with baffles, said mixing apparatus comprising at least two mixers located at different heights on a mixer shaft, an upper mixer being equipped with a central plate attached to the mixer shaft, with essentially vertical inner blades rising upwards and downwards from the central plate and outer vanes directed outwards from the central plate, which are inclined from the horizontal, wherein inner edges of the vertical inner blades of the upper mixer above the central plate narrow outwards, and a lower mixer being equipped with a central plate attached to the mixer shaft with vertical blades located on the outer edge of said central plate.
Dependencies are inferred from the claim text.