Method and apparatus for forming controlled vortexes and for recirculating gas
AssigneeOutokumpu Engineering Contractors Oy
InventorsStig-Erik Hulthom, Launo L. Lilja, Valto J. Makitalo, Bror G. Nyman
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Abstract
The invention relates to a method for forming controlled vortexes and for circulating gas thereby in a reactor (1, 15) containing liquid or a suspension of liquid and solids. Into the reactor there is also fed gas, so that the liquid is set into a turbulent motion by means of mixers (4, 17, 18) and flow baffles (6, 17, 19). By means of adjustable flow baffles (6, 19), there are created in the reactor at least two vortexes (10), external to the mixer shaft, for sucking gas from the suspension surface into the liquid phase.
Claims12
A method for forming controlled vortexes and for recirculating gas thereby in a reactor containing liquid or a suspension of liquid and solids, into which reactor there also is fed gas, so that the liquid is set into a turbulent motion by means of a mixer member and flow baffles, characterized in that in the reactor there are formed, by means of the flow baffle members, at least two vortexes external to the shaft of the mixer member, the suction force of the said vortexes being adjustable, so that gas is sucked from the suspension surface into the liquid phase by means of the said vortexes.
An apparatus for forming controlled vortexes and for recirculating gas thereby in a reactor (1, 15) containing liquid or a suspension of liquid and solids, the said reactor comprising at least a bottom (2, 21) and a wall part (3, 22), so that the liquid is set into a turbulent motion by means of at least one mixer (4, 17, 18) suspended from an shaft (5, 16), and that the reactor is provided with essentially vertical flow baffles (6) located on the reactor walls, characterized in that the flow baffles (6, 19) arranged in the reactor (1) and extending from top to bottom at least to the height of the mixer, are installed to be adjustable.
Dependencies are inferred from the claim text.