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Tank Mixing
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Tank Mixing

Tank Mixing

Tank Jet Mixing is a process whereby Tank Jet Mixers act as mass momentum exchange devices. These use the energy of pressurised liquid to entrain, mix and pump a secondary liquid. The principle is used for many process applications including blending, solids suspension, dilution, heat distribution, pH control, temperature control and homogeneity.

 

Our core capabilities

  • In-house process design, mechanical design and manufacture of Jet Mixers
  • In-house CFD Analysis to determine the optimum mixing arrangement
  • Various material options including plastics, metals and exotics
  • Manifold design and supply
  • Support design and supply

Gasoline Tanks

Operation

In operation, pressurised motive liquid is discharged through the jet nozzle into the suction chamber. The change from pressure energy to kinetic energy (velocity) creates a region of low pressure that entrains liquid from within the process vessel via the open suction ports. The motive and suction liquid streams combine and mix under high shear conditions in the venturi diffuser. The resulting intimately mixed fluid is then discharged into the bulk of the process liquor as a high velocity turbulent jet.

 

Standard Transvac Tank Mixing systems entrain 3 parts suction liquid for every 1-part motive liquid.

 

Design

Each Tank Mixing system is designed to suit the process mixing requirement and single Mixers or a number of mixers mounted on an in-tank manifold are available. Transvac can offer the Jet Mixer and any manifold designs.

Materials of construction

Tank Mixers can be manufactured in virtually any material, carefully chosen to suit the process conditions;

  • Stainless steel
  • Carbon steel
  • Polypropylene
  • PVCu
  • PTFE
  • GRP

Hygienic designs are also available for the food / pharmaceutical industry as required.

Advantages of Transvac Tank Mixers

 

  • No moving parts inside the tank
  • Virtually maintenance free once installed
  • Quick mixing times (3-Parts Suction within the tank to ever 1-Part Motive fluid)
  • Custom designed to suit specific fluid properties and tank geometry
  • Suitable for suspension of solids and mixing sludges
  • No limitation on tank size, multiple mixers can be installed
  • Can be ‘through-the-wall’ designs, so no access required for installation
  • Available in metallics, plastics and exotics

Typical Applications

  • General Mixing / Blending
  • Municipal and Industrial Sludges – Digesters mixed to promote ideal process conditions. Pre and post digestion sludge holding tanks mixed to prevent stratification
  • Odour control – Municipal / Industrial sludge balance tanks mixed to prevent anaerobic conditions (optional atmospheric air entrainment to assist process)
  • Radioactive waste mixed on Nuclear Power stations and waste processing centres (exotic material used)
  • Mix corrosive / hazardous waste on effluent treatment plants
  • Homogenisation of epoxy liquid in paint production
  • Mixing of food products including wine, soft drinks, sauces etc
  • Blending of lube oils on petroleum plant
  • Blending effluent containing Glycol on pharmaceutical process
  • Neutralisation mixing duties using phosphoric, hydrochloric and sulphuric acids on water treatment
  • Agitation of resin beads for water treatment
  • Mixing styrene without generating static

Computational Fluid Dynamics (CFD)

To prove design concepts for Tank Mixing applications, our team of inhouse engineers often perform advanced computational fluid dynamics (CFD) studies at our state-of-the-art Ejector Centre of Excellence. These studies are used as a proof of concept, to model the required system and verify the necessary mixing and flow regime for critical applications.

 

Visit our Computational Fluid Dynamics page to learn more.