Double Heat Jacketed Mixing Tank With Stirrer

A jacketed mixing tank utilizes electric immersion heating rods inside an intermediate oil-filled jacket to deliver uniform heat across vessel walls during low-to-medium viscosity fluid blending. Flange heaters transfer thermal energy to the intermediate fluid medium, which circulates within the jacket envelope to conduct uniform heat through the inner vessel shell. Marine-type propeller blades generate continuous downward axial thrust, sweeping settled solids off the dished bottom and directing fluid streams upward along heated sidewalls to prevent localized scorching.

Boundary Layer Disruption Through High-Velocity Axial Circulation

Rapid thermal equilibrium depends upon continuous mechanical disruption across the liquid film boundary. Installing a jacketed tank with stirrer equipped with three-blade axial propellers produces high pumping rates per horsepower input, creating rapid fluid turnover across interior surfaces.

Downward discharge streams hit the lower vessel head, splitting radially before rising along heated side surfaces. This vertical turnover shears away the thermal boundary layer, accelerating convective heat transfer coefficients while maintaining uniform suspension of dense solids without vortex formation.

Performance Profile of Agitated Thermal Media

Surface Watt Density Control and Fluid Degradation Limits

Operating a heat jacketed mixing tank requires precise watt density management to prevent thermal oil breakdown and heating sheath failure. Immersion heating elements calibrated below twenty watts per square inch suppress fluid carbonization along heater sheaths.

External expansion chambers provide fluid expansion volume while isolating high-temperature media from air contact. This physical isolation prevents thermal oil oxidation, preserving viscosity profiles and heat absorption characteristics throughout rigorous manufacturing cycles.

Cladding Insulation Efficiency and Sanitary Fluid Evacuation

A mixing tank double jacket incorporates dense ceramic fiber insulation enclosed within an exterior stainless steel protective barrier. This exterior insulation cladding reduces radiative heat emission into processing zones, protecting facility personnel from high skin contact temperatures.

Precision-machined 316L interior surfaces finished to sanitary Ra standards eliminate crevices, preventing formulation residue retention during fluid discharge. Centrally positioned bottom drain ports ensure complete product evacuation, accelerating clean-in-place cycles across incompatible batches.

Technical Specifications

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