Chemineer incorporates ad vanced technology into every kenics mixer to give you reli able,uninterrupted performance that you can depend on for the long term. Kenics ultratab kenics static mixer by national oilwell. Numerous independent studies have shown that kenics static mixers maximize mixing efficiency without the wasted energy and material blockage typically found in more restrictive motionless mixers. Engineers have extensive knowledge and experience to correctly design and specify mixers for fiscal mixing purposes. The smooth element geometry results in efficient mixing of miscible fluids in laminar or turbulent flow and dispersion of immiscible fluids or. The orca cfd package provides accurate solutions in a timely manner utilizing a novel solution technique in the area of mixing fluid dynamics. Bakker and laroche 1993 used the fluent software package to qualitatively.
The velocity fields and pressure drop reported in kenics static mixer comprise of 3, 9 and 25 kenics mixing elements over a wide range of reynolds number ranging from 1 to 25,000 using commercial cfd software fluent 6. Kenics static mixers have set the standard for inline mixing and heat transfer. Kenics static mixers are available with integral sampling ports for improved accuracy. Kenics kmx static mixer pumps seals valves process equipment.
Kenics wvm kenics static mixers by national oilwell. Kenics was the first static mixer produced and to this day is the leader in static mixer design and technology. Numerical simulation of granular mixing in static mixers. The numerical simulations were performed with the help of the commercial software fluent, version 5. The effect of varying the standard geometry is discussed for a broad range of reynolds numbers. The housedelements design incorporates a method for delivering two streams of fluids into the static mixer.
Twophase laminar flow simulations in a kenics static mixer. In these labs, the process of design technology goes through many stages. Pdf flow and mixing with kenics static mixers researchgate. The hev is ideal for processes where pressure loss mier length are critical. Another option is to use a slightly different style static mixer. Produces rapid mixing by inducing circular patterns that reverse direction at each element intersection. Solutions and designs are offered to accurately determine the water content in crude oil and hydrocarbon streams. By using kenics static mixer elements in each heat exchanger tube, the film buildup commonly associated with laminar flow empty tubes is significantly reduced. It features a low pressure drop through the mixing element. Kenics static mixer quick selection guide flow range gpm line size viscosity cp 1 10 100 500 0. We incorporate advanced technology into every static mixer to give. The plate type static mixer patent was issued on november 24. Kenics static mixer technology, available exclusively in kenics heat exchangers, offers the highest available coefficients for fast, uniform heat transfer.
The static mixer traces its origins to an invention for a mixing device filed on nov. Use of an areal distribution of mixing intensity to describe blending of nonnewtonian fluids in a kenics km static mixer using plif f. Designed for turbulent flow applications common in water treatment, desalination plants, and. Normally the fluids to be mixed are liquid, but static mixers can also be used.
Kenics static mixer design static mixers are a low energy and efficient mixing device that can handle a wide range of applications. Fundamental approach to the design and optimization of. In the present study, we will restrict our attention to the mixing of fluids in the kenics static mixer manufactured by chemineer, north andover, ma. Chemineer has designed and manufactured static mixers under the kenics. Use of an areal distribution of mixing intensity to. Agitators mixers reactors process equipment corporation. Typically sanitary static mixers have tri clamp ferrules for ease of installation flanged ends.
Optimization of a kenics static mixer for noncreeping. Six blade patterns including four twisted blades, four elliptical blades and other four combined geometries of. The comparison shows excellent agreement between the cfd and. Below you will find a short explanation of the segment shapes. This mixer design has been employed in the chemical process industry since the mid1960s, mainly for the inline blending of liquids under laminar flow conditions.
An animation clip, showing all five passes for simulation setup 2 see table 2, base design for kenics static mixer, can be found in the supplementary materials. The chinese administration branch, special equipment licensing office selo, awarded this prestigious manufacturers license. The comparison shows excellent agreement between the cfd and the experimental data. Highlights kenics km static mixer shows poor mixing performance with viscoelastic fluids. In this study, we proposed various designs of static mixer based on the blade geometry. Modelling of twophase liquid liquid flows through a kenics static mixer by means. Standard screw, helical or spiral shaped mixing element.
This is to be expected as the 6element mixer is a relatively short design, and is operating at the low end of industrial velocities. Chemineer greerco products feature a high shear rotorstator design. Analysis and optimization of kenics static mixers materials. Simulation of granular mixing in a static mixer by the. Kenics static mixer national oilwell varco nov pdf. Mixing performance of viscoelastic fluids in a kenics km inline static mixer. Mixing applications turbulent blending the km static mixer produces rapid mixing by inducing circular patterns that reverse direction at. This device was the housedelements type and was licensed to the kenics corporation and marketed as the kenics motionless mixer. The common limiting factor in static mixer design is the. The purpose of the mixer is to mix the 1% diluted sulfuric acid with the.
Additional velocity reversal and flow division results from combining alternating right and lefthand elements, thus increasing mixing efficiency. To meet the requirements for mixing purpose, a proper design of the static mixer is important. With internal elements that feature concave blade construction, the kmx creates strong crossstream mixing and flow splitting to achieve very rapid blending. Mixing in the kenics static mixer is optimized using computational analysis and theoretical concepts.
Kenics has renewed its accreditation to design, manufacture, and export heat exchangers as well as pipeline static mixers into the peoples republic of china. One of the first commercial units was the kenics device. The mapping approach is applied to study the distributive mix ing in the, widely industrially used, kenics static mixer. The llpd consists of semielliptical plates like the lpd design, but the plates are 120 degrees relative to each other instead of 90 degrees. Depending on the setup of the static mixers, the time of a single pass was between 1. Performance of kenics static mixer over a wide range of. Alternating helical elements of the km static mixer continually divide, stretch and reorient the flow stream to produce complete mixing with.
Design our static mixers are highly effective at creating homogeneous liquidliquid or gasliquid dispersions. Chemineerkenicsprochemgreerco mixing products hayes pump. In the kenics mixer, a set of twisted elements with left and righthand twists caused the material to move from the wall to the center and from the center to the wall. The results attained form orca are validated against two detailed experimental studies using the smx mixer and kenics mixer.
A static mixer is a precision engineered device for the continuous mixing of fluid materials, without moving components. Flanged end connections allow for easy mounting of the static mixer into the process pipeline. Bakker and laroche 1993 used the fluent software package to qualitatively analyze the flow patterns, pressure drops, and mixing characteristics of kenics static mixers. Early cfd work on static mixers dates back to the 1990s. The kenics ultratab static mixer has a compact installation space requirement and can perform complete blending operations in short distances downstream of the mixer. Designed for turbulent flow applications common in water treatment, desalination plants, and chemical processing, the ultratab delivers a high degree of mixing in a compact space. The design of static mixer heat transfer equipment for adhesives, sealants, resins and polymers by neil cathie, kenics global. Kenics km static mixers pumps seals valves process equipment. Capable of reliable operation in a wide range of process applications, including those in the polymer, plastic, and food and beverage industries, kenics heat exchangers require less space, less energy and less. The first static mixer kenics the first to use particle image velocimetry piv and computational fluid mixing cfm to visualize flow patterns the first expert design software agdesign, agdraw, agorder, maestro and sm design the first highefficiency gas dispersion impellers cd6, bt6. The design of static mixer heat transfer equipment for. Study of effects of design modification in static mixer.
Kenics ultratab static mixer by national oilwell varco. Lowest pressure drop available per degree of mixing. Static mixers are a low energy and efficient mixing device that can handle a wide range of applications. In all kenics km series static mixers, a patented helical mixing element directs the flow of material radially toward the pipe walls and back to the center. Kenics heat exchangers pumps seals valves process equipment.
Kenics kenics heat exchangers by national oilwell varco. A static mixer is a fidelity engineered device for the continuous mixing of fluidsolid materials. Kenics static mixers have set the standard for inline mixing and heat transfer performance. You can contact primix for more information about the segment shapes that have been used in the static mixers. Hayes pump represents chemineer mixers, agitators, impellers and auxiliaries. As a result, kenics heat exchangers provide predictable, controlled mixing, and the most efficient form of thermal transfer available today. Static mixer with flat blades covcov 0 laser induced fluorescence lif images showing crosssectional uniformity 0246 8 10 12 14 ld t he kenics kmx static mixer is the choice for demanding mixing applications, such as those involving fluids with extreme viscosity or volume ratios.
It features a design that generates superior mixing per unit length for laminar flow and highlow viscosity ratio applications. This study analyses the performance of four static mixers, namely, kenics, smx, komax, and a new static mixer proposed by the authors. Kenics km kenics static mixers by national oilwell varco. New products are constantly coming out of the chemineer research and development labs as their engineers are consistently looking for the most efficient and costeffective impellers, impeller systems, static mixers. A total of 54 cases were examined to consider the effect of mixer geometry and inertia on flow and mixing performance. A common application is mixing nozzles for twocomponent adhesives e. The kenics km series static mixers feature a patented helical mixing element which. Each tube is filled with kenics static mixer elements to prevent any possibility of. Mixing performance of viscoelastic fluids in a kenics km.
Capable of reliable operation in a wide range of process applications, including those in the polymer, plastic, and food and beverage industries, kenics heat exchangers require less space, less energy and less residence time than standard designs. Kenics static mixer design the housedelements design incorporates a method for delivering two streams of fluids into the static mixer. Today, the kenics brand is owned by national oilwell varco. Static mixers for the inline pipeline mixing and heating of liquids, suspensions, slurries, pastes and gases, have been developed by four different companies in the united states, but only one.
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