Helical design mixers are best for highviscosity 1,500 cp fluids, and when fluids are moving more slowly through the mixer. Continuous static mixer reactors will often require a high level of process monitoring and control. Static mixer design equations formulas calculator flowrate. General industrial static mixer series 100150 statiflo general industrial inline static mixers suitable for all process industries supplied with fixed or removable mixing elements. The second objective is to gain insight in the mixing mechanism in kenics static mixers under laminar flow conditions. Principles of operation of static mixers stamixco static. Mike day everything about concrete recommended for you. Standard designs are supplied with either six or twelve mixing elements in an assembly. Size permitting, all static mixers are both hot airwelded and solventcemented into the housing to create a high strength bond and edgeseal the mixer to the wall to prevent liquid from slip streaming around the mixing elements. Study of effects of design modification in static mixer. Series sms stainless steel specifications in line static. Droplet breakup liquid vaporization mixing enhancement mixing lengthtime increase larger surface area, small flow.
The functions of mixer are summarized in the following. Design features available as system addons include injection nozzles, heating and cooling jackets, removable and nonremovable elements. A static mixer is a precision engineered device for the continuous mixing of fluid materials, without moving components. V erdermix vml s eries similar to the vmv series but static mixers with retractable mixing elements for easy cleaning or unclogging. The nature of a static mixer in a pipeline unlike a mechanical mixer in a basin or tank or a pipe flocculator is that the mixing is short in nature 15 seconds and more aggressive. Static mixer selection guide stamixco static mixer products. Static mixer specifications static mixer features 2 vanes, 116 thick 3 vanes, 116 thick sample point optional static mixer material a53 grb carbon steel is standard. Komax static mixers are applied to problems that range from the blending of heavy slurries and pastes to the mixing of low viscosity materials such as petroleum distillates and water additives. Kenics static mixer installation, operation and maintenance. With sulzers static mixers you can produce small volumes with an excellent mixing reliability. The more highly viscous the fluid is, the more prominent the results are. Koflo produces a complete line of industrial grade schedule pvc static mixers in sizes ranging from 12 20. Usually supplied with so or wn flanged end connections, but could equally be supplied with plain or weld prepared ends.
Sizing the admixer static mixer admix sanitary mixers. The faster the fluid moves, the faster and more thorough the mixing. Blade design mixers are best for lowviscosity 1,500 cp fluids. Fundamental approach to the design and optimization of. Both flow division and radial mixing mechanisms are fundamental to the mixing of free flowing particulates.
Koflo static mixers are available instock for direct purchase or custom designed to meet your specific mixer requirements. The komax motionless mixer achieves high efficiency through triple action mixing. Excellent for combining products into fluids such as yogurt, mayonnaise, and ice cream. Great for mixing products into water or waterlike fluids. Make use of leading and pacemaking technology with the most energy efficient mixer designs for key markets. Design and assessment of a novel static mixer article pdf available in the canadian journal of chemical engineering 893. Normally the fluids to be mixed are liquid, but static mixers can also be used to mix gas streams, disperse gas into liquid or blend immiscible liquids. We have taken the liberty of pointing out the static mixer design geometric structure that in our opinion is best for. Another option is to use a slightly different style static mixer. Using a static mixer as a flash mixer with high levels of mixing and turbulence, a static mixer is a natural choice for flash mixing. Static mixers are widely used in various industrial applications to intensify the laminar mixing of nonnewtonian fluids. Low pressure drop static mixers for turbulent flow processes since static mixers rely on external pumps to move product across the mixer elements, pressure drop often serves as a basis for selecting the appropriate static mixer. Moreover, the conversion process of the static mixer switches the liquid between.
Westfalls 3050 static mixer generates 2 to 4 times less headloss than other mixing solutions. For the static mixer it is no problem to go over this limit. In this paper we mutually compare the global performance of all these mixers in the regime of laminar ow to nd the optimum design using both criteria, i. With no moving parts to wear out, it is completely trouble free, requires no maintenance and has an infinite life. A motionless mixer can increase the heat transfer rate of a viscous material flowing in.
The performance of industrially relevant static mixers that work via. Static mixer design calculator solving for flowrate given power dissipated, water specific weight and dissipated headloss. The dshape static mixer design is known for its lowcost, excellent mixing capability, ease of installation, reliability, and an exceptional service life. This design is offered in many materials of construction and to 48 inches diameter. These processes can be broadly grouped into the following mixing classifications. The statiflo static mixer behaves in the same manner as in the liquid liquid turbulent flow classification. A total of 54 cases were examined to consider the effect of mixer geometry and inertia on flow and mixing performance. As a result of these alterations in the fluid flow, mixture components are brought into intimate contact.
Kenics was the first static mixer produced and to this day is the leader in static mixer design and technology. Design of a water treatment mechanical mixer for a pre. The number of inline stages depends on the degree of mixing required estimated by flow rate, viscosity. Apr 16, 2004 mixing in the kenics static mixer is optimized using computational analysis and theoretical concepts. It is easily installed in new and existing pipelines and offers both low installation and low operating costs. Westfalls 2800 mixers have a slim profile and deliver full mixing within 10 diameters. Omoris static mixer company is established in 2008, after about 10 years development,omoris have serviced more than 3000 customers all of the world.
Static mixers are simple mixing devices effective in a variety of applications. The smx plus static mixer is the reference for homogenization and dispersing tasks in laminar flow. Static mixer selection guide stamixco static mixer. How to form, pour, and stamp a concrete patio slab duration. With high levels of mixing and turbulence, a static mixer is a natural choice for flash mixing. Eries the standard series of verdermix static mixers. Step 1 pick the mixer that meets your headloss requirements. Fundamental approach to the design and optimization of static. Llpd mixer 25, and the sulzer smx mixer including a recently developed new seriesof smx mixers, the smxn 26. Step 2 determine the space laying length available.
They can be easily installed, cleaned and maintained. Fundamental approach to the design and optimization of static mixers. The fluid moves through the mixer in an alternatingclockwise counterclockwise motion to ensure a homogeneous product. Pdf this paper examines the performance of a novel static mixer comprising a circular tube fitted with eight alternating equispaced. The vent lines will be of adequate size, and the safety of the venting system should be given special design consideration. This reflects the level of precision control required during the reaction. The most suitable static mixer design for a specific application is based on the flow regime of laminar, turbulent or twophase flow and other process and customer requirements. The objective of this research is to improve the mixing performance of static mixers by incorporating design modifications to the internal geometry. These are edge seal type spinning packs and pump locks that you can directly apply static mixers to. Determine the static mixer nominal diameter the mentioned liquid speeds are indicative.
It uniformly mixes liquids and gases, with various applications in foods, chemicals and more. Vdm series 316 schedule 40 stainless steel static mixers are based on the industry leading dshape static mixer design. Static mixers are simple mixing devices effective in a. The sms series of static mixers are high performance mixers designed to meet a wide range of mixing applications. The teflon static mixers are predominantly used for applications involving aggressive. They are designed for use where additives to the main pipeline flow have already been introduced upstream of the mixer. The jacketed static mixer is a special type of a mixer which is provided with a heating or a cooling jacket. Triple action mixing elements the komax triple action mixer provides the highest level of mixing of any static mixer by providing tow by two division, cross currentimpingement mixing and back mixing which produces highly efficient mixing in. The first objective is to explore the possibilities computationa l fluid dynamics offers in the analysis of mixing induced by helical elements. Mixer design mixer is widely used to enhance urea vaporization, mixing and avoid deposit.
Even challenging mixing applications such as dosing a small amount of low viscous additive into a highviscous main stream can be performed very efficiently. Static mixer design calculator wastewater treatment mixing equations. Static mixer static inline mixers motionless mixer. The objective of this research is to improve the mixing performance of static mixers by incorporating design modifications to the. Static mixer the membrane resistance of the tube wall region decreases by conversion process of the flow of the static mixer, and heat exchange efficiency is largely 35 times improved. Pdf design and assessment of a novel static mixer researchgate. For more than 40 years, static mixers also known as motionless mixers have been successfully used as inline mixers for the mixingdispersing, reaction and heatingcooling of high and low viscosity liquids, slurries, gases and the multiphase contacting of gases, solids and liquids. Static mixers are a low energy and efficient mixing device that can handle a wide range of applications.
The effect of varying the standard geometry is discussed for a broad range of reynolds numbers. Triple action mixing elements the komax triple action mixer provides the highest level of mixing of any static mixer by providing tow by two division, cross currentimpingement mixing and back mixing which produces highly efficient mixing in a short lay length with low pressure losses. Low cost, economic design reduces static mixer costs. Static mixers are therefore utilized not only for strictly mixing. The static mixer sm is a unique line mixer that does not require an actuator. These mixers are used in applications where heat is required to be provided or taken away during the mixing operation. Cfd design simulation static mixer komax systems, inc. Mixing in the kenics static mixer is optimized using computational analysis and theoretical concepts. Stamixco manufactures a broad range of static mixer designs with different geometric structures. Furon static mixer, efficient mixing of liquid media with no moving parts keywords high purity accessories, furon brand, furon, semiconductor, microe, fl6282, mixing two or more chemistries, minimal pressure loss, inline design, photovoltaic wet process, versilon hp pfa pipe, oring free design. Abdurrahman, 3,isyaku umar 1,department of mechanical engineering college of engineering kaduna polytechnic and applied science department college of science and technology. The optimum design of a static mixer reactor should be considered in terms of the full system and not just an optimised reactor design. It is design ed to be an accurate yet simple method for obtaining the. Motionless mixer is an exceptionally efficient inline mixer that contains no moving parts.
Since the first year of establishment,we applied iso9001. Design of a water treatment mechanical mixer for a prechlorination tank as an effective algae control, aeration and coagulation processing. Bring acture velocity to find head loss from pwa graph. Step 3 pick the right materials for your application. These cost effective solutions offers consistent mixing results. It is design ed to be an accurate yet simple method for obtaining the correct static mixer for various liquid applications. Sizing the admixer static mixer and sanitary static blender introduction this article provides the necessary information for sizing an admixer for liquid liquid single phase mixing. Principles of operation static mixers helical static mixer. The available mixer designs include the lpd, a lowpressure model typically used for low viscosity turbulent flow mixing of fluids and for gasliquid mixing. Static inline mixers inline static mixers are specialty mixers installed in the line and mix fluids as you pump them through a pipeline. Jacketing a motionless mixer can be valuable in many cases. On the performance of static mixers eindhoven university of. In this paper we mutually compare the global performance of all these mixers in the regime of laminar ow to nd the optimum design using both criteria. The simple, three step design procedure shown below allows the rapid choice of line size, number of mixing elements and pressure drop.
Mixing in the kenics static mixer is optimized using computational analysis and theo. The llpd consists of semielliptical plates like the lpd design, but the plates are 120 degrees relative to each other instead of 90 degrees. Offering big advantages over motor driven mixers and competitive static mixers the komax design offers continuous processing of liquids, gases and solids with predictable blending, uniform temperature. A check valve will be installed in the vent line in order to prevent air from being drawn back into the system. However, this classification is complex due to the large number of parameters affecting flow and. In fluid mechanics a liquid speed of 2,5msec is general advised as a maximum liquid speed. Benefit from our longlasting experience and broad application knowhow. Nonnewtonian fluids can be categorized into 1 timeindependent, 2. Static mixer designs and applications static mixers.
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