Static Mixture

Static Mixer for Pulp and Paper Mills and Waste Water Treatment Plant

Vikas Static Mixer supplies static mixers to the pulp and paper industry in all sizes and materials of construction including stainless steel, SS 304 and SS 316.

Typical applications are:

  • acid dilution, caustic dilution and pH control
  • stock dilution
  • stock blending
  • chemical, filler and additive blending
  • low consistency bleaching
  • green liquor coagulant

Process Applications

A wide variety of process applications take advantage of static mixing technology including:

Laminar Flow

  • High Viscosity Mixing
  • High – Low Viscosity Mixing
  • Heat Transfer Enhancement
  • Plug Flow Reactors

Turbulent Flow

  • Low Viscosity Liquids Mixing
  • Gas Mixing
  • Dispersion of Immiscible Liquids
  • Gas-Liquid Contacting

Features & Benefits

  • Highly efficient mixing
  • Chemical savings
  • Low energy consumption
  • No moving parts for maintenance free operation
  • No direct motive power required
  • No need for tanks in most cases
  • Ease of installation
  • Minimal space requirement
  • Totally enclosed pipe designs
  • Optional injectors and sample poin
  • Available worldwide

Highly efficient mixiing

All Vikas Static Mixers, for both pipes and channels, have been carefully designed to provide highly efficient mixing. Our range of products includes the most efficient designs currently available, in terms of the highest degree of mix in the shortest time and with the lowest energy consumption (pressure drop).

Chemical savings

Efficient mixing and high mixture quality reduces the consumption of dosed chemicals by eliminating the need to overdose to compensate for poor mixing.

Low energy consumption

Highly efficient mixing results in low energy consumption - low pressure drop in pipes or low headloss in channels. Vikas Static Mixers are invariably installed in existing systems without reducing the capacity of existing pumps and, in most cases, can be installed on gravity flow systems. Vikas  Mixers will typically reduce power consumption by 90% when compared with dynamic mixers in stirred tanks.

No moving parts for maintenance free operation

Unlike dynamic mixers, Vikas  Static Mixers have no moving parts and are virtually maintenance free.

No direct motive power required

The energy required for mixing is efficiently extracted as pressure drop from the fluid flow through the elements. No electric motors and associated equipment are required.

No need for tanks in most cases

Most mixing objectives can be achieved inline in pipes or in channels without the additional requirement for tanks. Short circuiting, commonly associated with tanks, is avoided.

Ease of installation

No special skills are required other than normal engineering pipework skills.

Minimal space requirement

Vikas Static Mixers are both compact and efficient and, within reason, can be installed in the most restricted of spaces, including in bends in some cases.

Totally enclosed pipe designs

All Vikas  Static Mixers for pipe systems are totally enclosed and without the need for shaft seals necessary on stirred tanks. This virtually eliminates the risk of contamination both from and into the system. This feature is especially important when mixing dangerous and corrosive fluids and in the food and pharmaceutical industries where any amount of contamination cannot be tolerated.

Optional injectors and sample points

Integral injectors, both fixed and removable under pressure, and sample points are available for most mixers. Duty and standby designs are available. The short  distance (and time) between integral injectors and sample points ensures the most responsive process control with minimum time lag.

Optional heat transfer jacket

In many processes, mixing and heat exchange are closely linked, especially for viscous and heat sensitive products.




Principles of Operation

Liquid / Liquid laminar flow of miscible fluids

Flow Division

The main mechanism in laminar flow in a static mixer (Reynold's number < 2000) isflow division. Vikas Static  element styles are either helical or pseudo-helical and are arranged in a series of alternating left and right hand 180° twists. The leading edge of an element, which is on a diameter, is at 90° to the trailing edge of the upstream element.

In flow division, the leading edge of the first element splits the fluids entering the mixer into 2 streams, which are then rotated through 180°. The second element splits the flow again, this time into 4 streams, followed by a further rotation, in the opposite direction, through 180°. The third element repeats the process by splitting into 8 streams, and so on. As the number of streams or layers increases, the layer thickness decreases. Typically, 12 to 24 elements are required to provide a complete mix.

Mixture quality is a function only of mixer diameter and number of elements and, in laminar flow, is independent of flowrate and viscosity.

Liquid / Liquid turbulent flow of miscible fluids

At higher Reynold's numbers, much greater than 2000, a second mixing mechanism, acting simultaneously with flow division, becomes important to the overall mixing process:

Radial Mixing

In general terms, the fluid viscosity in turbulent flow is lower than in laminar flow. The element shape is now able to impart a rotational spin to the fluids, which changes direction with each succeeding element. Fluids are constantly moved from the pipe centre to the pipe wall and back again, with the interface between elements a particularly active zone. This mechanism is called radial mixing, which dominates the flow division mechanism in turbulent flow. It very rapidly eliminates radial differences in, for example, composition, colour, pH, temperature and velocity.

The number of mixing elements required to achieve a fully homogeneous mix in turbulent flow applications is much less than in laminar flow and is typically 1.5 to 4 elements.

Liquid / Liquid turbulent flow of immiscible fluids

The radial mixing mechanism is important in reducing radial differences in velocity and therefore shear rate. The even shear history results in a predictable average droplet size where approximately 80% of the dispersed phase is within ±20% of the average droplet size. An open pipe, without controlled mixing, provides a huge range of droplet sizes with far less surface area of contact between phases.

The average droplet size is velocity dependent, with the terminal droplet size approached after 4 elements.

Static Mixer for Water & Wastewater Treatment

Vikas Static has the most extensive range of Motionless Mixers, for pipes and open channels, suitable for blending, dosing and gas / liquid mass transfer applications in:

  • municipal and industrial water treatment
  • municipal and industrial wastewater treatment

Vikas Static unique customised approach to static mixer design provides the most effective mixing solutions for both new treatment plants and retrofits to existing plants in an industry wide trend away from continuously stirred tanks

  • Model Type -1 Blade design MixerType
    : SS – 316Material
    Viscosity range : less than 1500 cps
    Reynolds no. : greater than 500
    : ½ “ to 14”Size range
    Application : Mixing products into water or water like fluids.
  • SW-SMx-01 : using for low viscosity. The faster the fluid moves, the faster mixing. Great for mixing products into water or water like fluids.


  • Model Type – 2 : Helical design Mixer
    SW-SMx-02 : using for high viscosity blending application and when
    fluid moves more slowly through the mixer
    Material: SS – 316
    Viscosity range : greater than 1500 cps
    Reynolds no. : less than 500
    : ½ “ to 14”Size range
    Application : Epoxy blending, Fruits into yogurt, Cookies into ice cream, Thermal homogeneity, slurry suspension, Folding/stripping .


  • Customer Benefits
    Excellent mixing and dispersing even with widely differing fluid
    Compact designs
    Reduced product degradation due to very short residence time
    Mixing of sensitive products under minimal shear stress
    No deposits and blockages due to excellent cross-mixing


  • Static mixers deliver a high level of mixing efficiency, formation of byproducts can be dramatically reduced.
    Low energy consumption
    Installation is very easy
    Static Mixers are available in all standard pipe sizes and in the case of open channel designs, are available in any size with no upper limit.


  • Industry Served
    Pulp and Paper Processing
    Oil Refining
    Food Processing
    Natural Gas Processing
    Water and Waste Water Treatment


  • Design Calculation
    For calculating element following criteria used :
    Reynolds no.= Dvñ/µ
  • Re<10 = 24-36 element
    10 100 1000 Re>10000 = 4 element



  • Pressure Drop Calculation
    ?P =3.061×10 6 f nsmxpx(u)2 xE
    G value calculation
    G = v(hf gñ/ìt)
    Pipe diameter
    (D)in meter = v(4Q/pv)


 Pulsuation Dampener

How Pulsation Dampeners Work

Pulsation dampeners operate on the principle that volume is inversely proportional to pressure. Compressed air or gas is introduced into the air chamber of the dampener to a specified pressure. The gas is entrapped by the elastomeric bladder, which prevents contact between the process fluid and compressed gas. (Without the bladder, the gas would dissolve into the fluid and cause product contamination). During pump discharge, fluid enters the wetted chamber of the dampener, displacing the bladder, compressing the gas and absorbing the shock. During pump shift, liquid pressure decreases, the dampener gas expands, pushing fluid back into the process line, eliminating up to 99% of system shock and pulsation.

Remove up to 99% of System Shock

Positive Displacement (PD) pumps create pulsation and hydraulic shock due to the reciprocating nature of their stroking action, potentially damaging piping and system components.

Vikas Pulsation Dampeners and Surge Suppressors remove virtually all system shock, enhancing the performance and reliability of fluid flow in municipal, industrial, sanitary and chemical transfer applications.

How Vikas Dampener Works

Vikas Pulsation Dampeners use a compressed gas separated by a bladder from the process fluid like a shock absorber. During the pump's discharge stroke, fluid pressure displaces the bladder, compressing the trapped gas. During the pump's next cycle, fluid flow stops momentarily causing expansion of the compressed gas, forcing the bladder to push accumulated fluid back into the discharge line. This fills the void created by cycle shift and dampens pulsation up to 99%.

Protect Pumps, Valves and Instrumentation

  • Protects pumps, piping, valves, fittings, meters and in-line instrumentation from damaging pulsations, cavitation, thermal expansion, hydraulic shock and water hammer.
  • Prevent destructive pressure surges caused by pump startup and shutdown.
  • Prevent hydraulic shock resulting from emergency valve closure and other equipment shutdown.
  • Prevent agitation, foaming, splashing and degradation of product.
  • Ensure accuracy, longevity and repeatability of flow meters and gauges.
  • Ensure a smooth, steady flow in metering and chemical injection processes.
  • Ensure uniform and continuous application in spraying and coating processes.
  • Ensure proper measurement, flow and filling applications of food and pharmaceutical products.
  • Ensure consistent flow when dosing, blending or proportioning process additives.
  • Ensure a smooth transfer of viscous or abrasive fluids.

Protect Inlet System Components

Positive displacement pumps contain an inlet valve that alternately opens and closes, creating an acceleration and deceleration of fluid into the pump. Inlet Stabilizers minimize these pressure fluctuations and acceleration head losses by preventing fluid column separation at the pump's inlet. The "J" Model air control allows for pressure or vacuum settings and is adjustable for suction lift or positive inlet pump conditions.

  • Protect pumps, valves, diaphragms and pistons from excess stress and strain.
  • Protect inlet system components from vibration and fatigue.
  • Prevent premature system component failure and cavitation.
  • Prevent gauge damage due to vibration.
  • Ensure steady inlet flow conditions to extend diaphragm life.
  • Ensure complete chamber fill to maximize component service life.
  • Ensure accuracy of inlet side gauges.

Technical Specifications

Vikas Pulsation Dampeners, Surge Suppressors and Inlet Stabilizers come in a full range of chemically resistant materials for even the most corrosive applications. The simple, reliable design allows for quick installation and easy in-line maintenance. All  housings are made at our workshop, and each unit is tested at design pressure or higher to assure proper function and leak-free operation.

Vikas  Surge Suppressors use a compressed gas separated by a bladder from process fluid to suppress hydraulic surge or "water hammer" created by quick-closing valves, back surge, and pump startup and shutdown. Without suppression, shock waves created will continue to oscillate back and forth until dissipated by friction or system component failure.

Benefits of Surge Suppression:

  • Protects pipes, valves, fittings, meters, and in-line instrumentation from destructive pulsations, surges, cavitation, thermal expansion, and water hammer.
  • Creates steady and continuous flow when dosing, blending or proportioning additives.
  • Ensures accuracy, longevity, and repeatability of in-line meters.
  • Enables uniform application of material in spraying and coating systems.
  • Reduces agitation, foaming, splashing and degradation of product.
  • Provides liquid energy storage for emergency valve closure and other equipment shutdown.
  • Reduces overall energy cost with continuous flow, rather than start/stop flow.
  • Operates as a reservoir for make-up fluid.

Vikas Surge Suppressor Features:

  • Sizes available for all positive displacement pumps with discharge sizes from 0.125" (3.18mm) to 6" (152.4mm).
  • Simple, reliable design and quick installation.
  • Easy in-line maintenance.
  • Temperature ranges from -60°F to +400°F (-51°C to +205°C) available from stock.
  • Bodies available in a full range of chemically resistant materials.
  • Bladders available for even the most corrosive applications.
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       Fan Pump With Minimum Pulsuation


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