A "static mixer," often called an inline mixer, is a device used frequently in water treatment to create an injection point for chemicals like chlorine and soda ash into a water line. Its purpose is to create turbulence that enhances the rapid mixing of the injected chemical into the water stream.
Can a static mixer be used to mix liquid?
Static mixers can be used for liquid, liquid mixing or gas dispersion into a liquid. Static Mixers are not used for Mixing Powders or Solids into Liquids because the mixing element obstructs the flow and a powder or solid could build up on the mixing elements and block the mixer.
What is the difference between stirred tanks and static mixers?
Static mixers have gained in popularity, as unlike stirred tanks the complete water flow and chemicals are subject to complete and thorough mixing in a relatively short period of time. The required energy for mixing is taken from the main water flow.
How does a chemical mixer work?
It's a simple device. The service flow of the water is from left to right in the picture. The chemical is injected through the threaded pipe extension on the left of the mixer body. As water passes through the mixer, it is churned by the metal baffles seen in the picture and the chemical is mixed with the water.
What is head loss in a static mixer?
When the mixture circulates through a channel, insufficient energy is imparted to the mixture as head loss. In order to rectify this situation, the channel mounted static mixer uses pressurised dilution water at a flow rate that represents 2 to 10% of the raw water flow rate.
What is the purpose of static mixer?
A static mixer is a precision engineered device for the continuous mixing of fluid materials, without moving components. 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.
Which is static mixer?
A static mixer is made up of a housing (pipe) and mixing elements or tabs but it has no moving parts, the flow through the mixer will mix the product. Static mixers can be used for liquid, liquid mixing or gas dispersion into a liquid.
How do inline mixers work?
Inline mixers feed and output material in a continuous stream, allowing material to often be perfectly hydrated, emulsified or homogenized in a single pass. They differ from other types of homogenization wherein large amounts of ingredients are mixed in a standalone unit before going through the homogenization process.
What is kenics static mixer?
Kenics static mixers and heat exchangers utilize process specific elements in a housing for continuous flow applications. The elements use the energy from the process stream to provide blending, dispersion, and heat transfer with minimal energy loss.
How do you calculate static mixer length?
The mixer length will be based on the number of elements required. An approximate length can be determined by multiplying the number of elements by 1.5.
What are the static motionless mixers and their different types?
Motionless Static Mixer: An OverviewCO2 Mixer.Crude oil metering.Desuperheater.Direct steam heating.Heat Exchanger.Inline static mixer.Inline steam heater.Liquid liquid mixer.More items...•
Do I need a static mixer?
Static mixers are ideal for blending liquid/liquid compounds or dispersing gases into liquids. Disintegrating and dissolving solids, however, can be more demanding, and for this process or for creating fine emulsions or suspensions, an inline mixer may be more appropriate.
What is an inline mixer?
Static Mixers are highly-engineered motionless mixing devices that allow for the inline continuous blending of fluids within a pipeline. With no moving parts, static mixers utilize the energy of the flow stream to generate consistent, cost-effective, and reliable mixing.
What is a homogenizer mixer?
A homogeniser is a high Shear mixer for mixing solids, powders and for mixing liquids of different densities into a homogenous mix. The Rotor stator sucks the product from below the mixing head and forces it through the Rotor Stator. Homogenisers are designed for different Tank Capacities.
Which of the following is example of static mixer Mcq?
Clarification: A correct example of static mixer is Ribbon blender and Mortar Pestle. A fluidized mixer is an air mixer.
Inline Static Mixers are used in the Municipal and Industrial Water Treatment Process
Inline Static Mixers & Inline Mixing: The demands for precise and responsive chemical dosing in the treatment of drinking water is growing. Applications such as disinfection, flocculation, fluoridation, plumbosolvency, control of taste and odour, ph correction, turbidity, ozonation to name but a few require precise metering of chemicals.
Gas dispersion system for the ozonation of drinking water
Gas Dispersion System: The inline dispersion of a gas in a large volume of liquid very often requires relatively expensive equipment. A classic example is the ozonation of drinking water.…
Dechlorination & pH Trim
Problem Dechlorination & pH Trim: Public water treatment plant required highly effective control to dechlorinate and pH trim in difficult access situation. Southern Water’s Weirwood Treatment Works supplies direct to…
Disinfection of Drinking Water
Problem Effective disinfection of drinking water supplies is essential for safe operation. Relying on natural turbulence alone in a pipeline will not guarantee complete mixing of injected sidestream at all…
Replacing Inefficient Dynamic Mixer
Problem As part of their policy of constant improvement and updating, Southern Water had identified that an opportunity existed to improve consistency of performance, energy consumption and maintenance costs at…
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the simple mixer with injection pipe
This system normally comprises an injection pipe followed by a diaphragm and is used to inject reagents that are easy to mix. Standard models are available for 100 to 400 mm diameter pipes. Head loss will be equal to at least 0.3 m of WC.
the packing mixer
This system is used to inject mineral reagents and polymers. Packing usually consists of vanes, lamella or reverse pitch screws. Their pressure drop also ranges from 1 to 5 m of head. This system is used to inject concentrated solutions having an output that only represents 0.01% of the raw water flow rate.
the radialmix radial mixer
This is a hydraulic radial diffusion mixer used to inject mineral reagents, polymers… It comprises a nozzle centred along the pipeline's axis and a plate with peripheral apertures (figure 2).
the MSC sludge mixer
This cyclonic type mixer is ideal for sludge conditioning (figure 3). It comprises a cylindrical section which receives incoming sludge and the reagents, followed by a conical section in which thorough mixing takes place in a spinning motion. The cylindrical section comprises two adjustable baffles.
What is a static mixer?
Static Mixers. Static mixers can be applied to a wide range of process operations, including dosing, dispersion, laminar flow heat exchange and emulsion formation. They offer many key benefits for combining liquids, gases and powders and they are tried, tested and trusted in many different industries.
What is channel mixer?
Channel mixers cover a wide range of flowrate s and are ideal for efficient chemical dosing.
How is energy extracted from mixing?
The energy required for mixing is efficiently extracted as pressure drop from the fluid flow through the elements. Mixers are invariably installed in existing systems without reducing the capacity of existing pumps. The installation is very easy, no special skills are required other than normal engineering skills.
Do mixers have moving parts?
Mixers have no moving parts and are virtually maintenance free. 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. Each Static Mixer is carefully designed to meet the specific requirements of each application.
What is a static mixer?
A static mixer is made up of a housing (pipe) and mixing elements or tabs but it has no moving parts, the flow through the mixer will mix the product. Static mixers can be used for liquid, liquid mixing or gas dispersion into a liquid. Static Mixers are not used for Mixing Powders or Solids into Liquids because the mixing element obstructs ...
Why are static mixers not used?
Static Mixers are not used for Mixing Powders or Solids into Liquids because the mixing element obstructs the flow and a powder or solid could build up on the mixing elements and block the mixer.
What is a static mixer with an injection port?
What is a “static mixer with injection port” used for? A Static Mixer with an Injection port is used for the addition of a chemical into the main flow through the mixer, the Injection Port is called the side flow.
Can you flange a mixer?
Static Mixers can be Flanged to fit into a Pipe System , they can also come with plain ends and the customer supplies the end fittings, they can also come with Tri-Clamp Ends for the Pharmaceutical and Food Industries, the Tri-Clamp End Connections mean that they can be easily removed for the Pipe Line for Cleaning, you do not have to remove bolted Flanges.
