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AssigneeBASF SE
InventorsUwe Stueven, Leo Van Miert, Dominicus van Esbroeck, Oskar Stephan, Annemarie Hillebrecht, Huanmin Wei
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The invention relates to a mixing kneader comprising at least two shafts (2,3) configured as hollow shafts, on whose surfaces kneading bars (4) are disposed on elements (5). The construction of the shafts is selected in such a way that the resonant frequencies of the shafts have a separation of at least 5% from the excitation frequencies. At least one of the shafts is preferably flowed through by a temperature-control medium, the inlet being disposed on one side and the outlet on the other side of the shaft. The mixing kneader preferably comprises at least one orifice above the shafts which is configured as a dome, the dome being closed by a displacer (22). In addition, at least one orifice for product withdrawal is provided, whose orifice cross section is adjustable during operation.
A mixing kneader comprising at least two shafts (2, 3) on whose surfaces are disposed kneading bars (4) on elements (5) and which are enclosed by a casing (6), in which at least one orifice (10) above the shafts and at least one orifice (11) for product removal are formed, the shafts (2, 3) being mounted so as to be rotatable at the same or different rates and in the same or opposite sense at both ends and being driven at at least one end, wherein the orifice (11) for product removal is configured as a weir (14) in a side wall of the casing and is adjustable during operation to adjust a fill level in the mixing kneader.
Dependencies are inferred from the claim text.