Filter cake slurrying device

Abstract

The invention discloses a filter cake slurrying device including a beating tank (1) and a strip extruder (2), wherein the beating tank (1) is internally provided with stirring impellers; the end port of an extruding material outlet (22) of the strip extruder is provided with a screen (3) and extends into a tank body (11); a filter cake added from a feed inlet can be extruded into a filter cake extruded strip by the strip extruder; the extruded strip is dispersed via the screen at the extruding material outlet and then is further dispersed in the tank body via the water shearing force action, to form slurry under stirring of the stirring impellers. The stirring impellers can comprise a helical internal stirring impeller (7) and cage-shaped external stirring impellers (8), and the external stirring impellers radially alternately sleeve the exterior of the internal stirring impeller; a stirring motor (4) can respectively independently drive the internal stirring impeller and the external stirring impellers so as to achieve vertically lifting and falling, and can drive homonymous rotation or reverse rotation of the internal stirring impeller and the external stirring impellers. The filter cake slurrying device can fully crush the filter cake, has the advantages of good stirring effect and high slurrying efficiency, and can effectively relieve blocking of the discharge port and bottom deposition of the beating tank.

Description

technical field [0001] The invention belongs to the field of catalyst preparation, and in particular relates to a high-efficiency slurry-forming device and method for high-viscosity filter cake. Background technique [0002] In the catalyst preparation process, filter cake slurry is often an important process, and the filter cake usually needs to be fully stirred in a beating tank to form a slurry. [0003] For example, ZL201320342061.7 discloses a white carbon black filter cake beating tank (or beating tank), which includes a tank body, a power drive device and a pump. A stirring shaft is installed in the tank body, and the stirring shaft is connected with the power drive device. There is more than one stirring paddle installed on the shaft along the axial direction, and more than one fixed blade is installed on the inner wall of the tank body. Material circulation inlet, the lower part of the tank is provided with a material outlet and a slurry circulation outlet, the bot...

AI Technical Summary

Problems solved by technology

However, because the filter cake sometimes has a high viscosity (that is, a high-viscosity filter cake), after it is directly put into the beating tank, the crushing effect of the stirring paddle is limited after all, so it cannot be dispersed quickly after being added to the beating tank, and there will still be Large pieces of slurry quickly sink to the bottom due to their own gravity and block the discharge port. At the same time, setting fixed blades and baffles on the wall of the beating tank will also cause the filter cake to deposit on it and make its crushing and stirring effect become worse

Therefore, the existing beating tanks generally have problems such as poor stirring effect, long stirring time, difficulty in discharging slurry, and dead ends.

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