Double Jacketed Mixing Tank Vessel With Agitator

A jacketed mixing tank regulates batch temperature through fluid circulation across an external vessel chamber, preventing thermal degradation during processing of viscous formulations. Hot water, thermal oil, or chilled glycol circulates through the perimeter envelope, transferring thermal energy across the internal metal barrier to maintain precise setpoints.

Sub-Atmospheric Evaporation and Gas Bubble Extraction

Integrating negative pressure extraction removes microscopic air entrapment from dense slurries. Vacuum conditions depress volatile solvent boiling points, accelerating moisture removal at lower operating temperatures while preventing product oxidation. Continuous gas extraction pulls vapor away from the slurry interface before micro-cavities cause batch instability.

Boundary Layer Shearing Across Heated Cylinder Walls

Viscous liquids adhering to interior metal develop stagnant films that restrict conductive transfer. Operating a jacketed mixing vessel equipped with perimeter Teflon scrapers continuously shears this static boundary layer. Direct mechanical wiping forces fresh fluid into bulk circulation, substantially elevating the overall heat transfer coefficient during demanding temperature cycles.

Structural Configurations for Heat Transfer Channels

Flow Regime Control and Double Mechanical Seals

Processing non-Newtonian mixtures requires precise torque transmission to balance turbulent shear and bulk axial turnover. A jacketed mixing tank with agitator prevents dead zones using counter-rotating impellers, while pressurized double mechanical seals maintain vacuum integrity below 50 torr without fluid contamination. Calibrated impeller tip speeds suppress cavitation risks around internal baffles.

Thermal Containment and Exterior Condensation Mitigation

A double jacketed mixing tank encloses high-density mineral wool insulation within a secondary stainless shell, eliminating radiant energy loss and shielding personnel from surface burns. This dual-annulus geometry restricts thermal radiation losses to ambient air, preventing exterior condensation during low-temperature crystallization cycles.

Metallurgical Standards and Clean-In-Place Integration

Internal contact surfaces utilize polished 316L stainless steel with surface finishes smoother than 0.4 micrometers Ra to suppress microbial adhesion. Sanitary spray balls provide complete coverage for clean-in-place procedures, ensuring rapid turnarounds between incompatible formulations without disassembling vacuum ports or heavy drive shafts.

Recommended Process

For mixing, dispersion, dissolving, and batch preparation of liquid and paste materials, followed by circulation or transfer, Heated Mixing System with Vacuum Extraction keeps the main process units and inlet/outlet connections closely arranged to reduce waiting between steps.

Visible Configuration

With the vacuum processing system, multiple-vessel arrangement, heating and temperature control, and vessel system as the core arrangement, Heated Mixing System with Vacuum Extraction can be adapted to different production scales, cleaning requirements, and installation methods.