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CHAPTER 9 [ T2 ]CHAPTER 9 [ T2 ]

AGITATION

and

MIXING

of

LIQUIDS

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TYPICAL AGITATION TYPICAL AGITATION PROCESS VESSELPROCESS VESSEL

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IMPLELLERS FOR LIQUIDS OF IMPLELLERS FOR LIQUIDS OF MODERATE VISCOSITY: (a) 3-MODERATE VISCOSITY: (a) 3-BLADE MARINE PROPELLERBLADE MARINE PROPELLER

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(b) SIMPLE STRAIGHT-(b) SIMPLE STRAIGHT-BLADE TURBINEBLADE TURBINE

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(c) DISK TURBINE(c) DISK TURBINE

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(d) CONCAVE-BLADE CD-6 (d) CONCAVE-BLADE CD-6 IMPELLERIMPELLER

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PITCHED-BLADE TURBINEPITCHED-BLADE TURBINE

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MEASUREMENTS OF MEASUREMENTS OF TURBINETURBINE

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MEASUREMENTS OF MEASUREMENTS OF TURBINETURBINE

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EQUIPMENT OPERATIONEQUIPMENT OPERATION

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IMPELLERS FOR HIGH-VISCOSITY LIQUIDS: IMPELLERS FOR HIGH-VISCOSITY LIQUIDS: (a) DOUBLE-FIGHT HELICAL-RIBBON (a) DOUBLE-FIGHT HELICAL-RIBBON IMPELLER; (b) ANCHOR IMPELLERIMPELLER; (b) ANCHOR IMPELLER

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SWIRLING FLOW PATTERN WITH A SWIRLING FLOW PATTERN WITH A RADIAL-FLOW TURBINE IN AN RADIAL-FLOW TURBINE IN AN

UNBAFFLED VESSELUNBAFFLED VESSEL

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FLOW PATTERN WITH OFF-FLOW PATTERN WITH OFF-CENTER PROPELLERCENTER PROPELLER

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DRAFT TUBE, BAFFLED DRAFT TUBE, BAFFLED TANK: (a) TURBINE; (b) TANK: (a) TURBINE; (b)

PROPELLERPROPELLER

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VELOSITY VECTORS AT TIP VELOSITY VECTORS AT TIP OF TURBINE IMPELLER OF TURBINE IMPELLER

BLADEBLADE

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TYPICAL VELOCITY PROFILE OF TYPICAL VELOCITY PROFILE OF FLOW FROM A STRAIGHT-BLADE FLOW FROM A STRAIGHT-BLADE

TURBINE, SHOWING DEFINITION OF TURBINE, SHOWING DEFINITION OF SHEAR RATESHEAR RATE

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RADIAL VELOCITY AND RADIAL VELOCITY AND VOLUMETRIC FLOW RATE IN VOLUMETRIC FLOW RATE IN TURBINE-AGITATED VESSELTURBINE-AGITATED VESSEL

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VELOCITY PATTERNS IN VELOCITY PATTERNS IN TURBINE AGITATORTURBINE AGITATOR

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POWER NUMBER VS REYNOLDS POWER NUMBER VS REYNOLDS NUMBER FOR TURBINES AND NUMBER FOR TURBINES AND HIGH-EFFICIENCY IMPELLERSHIGH-EFFICIENCY IMPELLERS

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POWER NUMBER VS REYNOLDS POWER NUMBER VS REYNOLDS NUMBER FOR MARINE NUMBER FOR MARINE

PROPELLER AND HELICAL PROPELLER AND HELICAL RIBBONSRIBBONS

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POWER CORRELATION FOR A POWER CORRELATION FOR A SIX-BLADE TURBINE IN SIX-BLADE TURBINE IN

PSEUDOPLASTIC LIQUIDSPSEUDOPLASTIC LIQUIDS

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MIXING TIMES IN AGITATED MIXING TIMES IN AGITATED VESSELS […UNBAFFELED; __ VESSELS […UNBAFFELED; __

BAFFELED TANKS]BAFFELED TANKS]

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TURBINE-AGITATED TURBINE-AGITATED BAFFLED VESSELBAFFLED VESSEL

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FLOW OF A SUBMERGED FLOW OF A SUBMERGED CIRCULAR JETCIRCULAR JET

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STATIC MIXER: (a) ELEMENT OF A STATIC MIXER: (a) ELEMENT OF A HALICAL-ELEMENT MIXERHALICAL-ELEMENT MIXER

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STATIC MIXER: (b) TURBULENT STATIC MIXER: (b) TURBULENT VORTEX MIXERVORTEX MIXER

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POWER REQUIRED FOR COMPLETE POWER REQUIRED FOR COMPLETE SUSPENSION OF SOLIDS IN SUSPENSION OF SOLIDS IN

AGITATED TANKS USING PITCHED-AGITATED TANKS USING PITCHED-BLADE TURBINESBLADE TURBINES

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POWER CONSUMPTION IN POWER CONSUMPTION IN AERATED TURBINE-AERATED TURBINE-AGITATED VESSELSAGITATED VESSELS

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RELATIVE POWER RELATIVE POWER CONSUMPTION IN AGITATED CONSUMPTION IN AGITATED

VESSELS VS ARETION NUMBER VESSELS VS ARETION NUMBER [ N[ NAeAe]]