Static
Mixers

CPA Flo2Gether Static Mixers

When taking measurements or samples any fluid that contains multiple components, it is very important for the fluid to be properly mixed. Proper and complete mixing means that the fluid has consistent properties that are representative of the whole/average. The degree of mixing is even more important when taking finite samples since sample probes only extract a limited amount of fluid. This small amount of fluid is taken to represent the whole, and can go on to affect many things such as payments, operations planning, environmental compliance and future maintenance.

One of the biggest challenges in mixing applications occurs when the fluid components normally cannot be dissolved into each other. In these cases, the mixture will naturally tend to separate and stratify. Even when the fluid is agitated, the components will resist mixing together. A common example of this situation is water and oil.

The CPA Flo2Gether line of static mixers are cutting edge products offered by Canada Pipeline Accessories. They are designed and engineered completely in-house by CPA’s engineering team and leverage our extensive experience and knowledge of fluid dynamics. Our patented design is specifically optimized for mixing and dispersing immiscible fluids; fluid mixtures that strongly stratify and do not easily mix together, such as water and oil.

Multi Stage Mixer Assembly, CPA MSMA

• Dual plate construction designed to achieve full mixing within 5D of mixer outlet.
• Optimized for horizontal mixing applications when a vertical mixing loop is not being utilized.
• Specifically designed for use with fluids that do not readily mix together, IE, oil in water.
• Front “pre-mixer” plate creates large scale fluid movement to disrupt stratified flows.
• Rear main mixer plate creates multiple small scale fluid movements to disperse and mix fluid.
• Simple and compact construction requires very little space for installation.
• Can be installed in any available piping spool using ANSI RF flanges.
• Scalable construction for all pipe sizes including custom schedules and wall thicknesses.
• Multiple mixers can be installed in-line for even more aggressive flow mixing.
• Lower pressure drop than many multi-element mixers, K factor = 5-6.
• Designed to create mixed flow according to ISO 3171.
• Designed and validated using advanced CFD software, field tested with customer participation.

Single Stage Mixing Plate, CPA SSRVM

• Simple, machined single plate construction.
• Optimized for vertical mixing applications.
• Specifically designed for fluids with less stratification such gas mixing and hydrogen blending applications.
• Single mixer plate creates multiple small scale fluid movements to disperse and mix fluid.
• Even more compact construction requires even less space for installation.
• Can be installed in any available piping spool using ANSI RF flanges.
• Scalable construction for all pipe sizes including custom schedules and wall thicknesses.
• Multiple mixers can be installed in-line for even more aggressive flow mixing.
• Lower pressure drop than many other mixers, K factor = 2 – 3.
• Designed to create mixed flow according to ISO 3171.
• Designed and validated using advanced CFD software, field tested with customer participation.

Materials and Installation

In its standard configuration, the CPA Flo2Gether Static Mixers are installed between two standard ANSI raised face flanges.

Like all CPA products, CPA Flo2Gether can also be customized to accommodate your exact installation requirements including RTJ, Norsok, or any other flange styles. Available materials include carbon steel, stainless steel, aluminum, or custom specialty materials.

ISO 3171 Criteria

The CPA Flo2Gether static mixers are designed around the ISO 3173 specification, which is more stringent than the API 8.2 C1/C2 ratio requirements. The C1/C2 ratio compares mixture concentration at the top and the bottom of the pipe, this is not typically where a sample probe is installed. This also assumes that if the mixture concentration is the same at the top and bottom of the pipe, then it is the same across the entire pipe. ISO 3171 specifically aims to minimize mixing error at the center of the pipe, where the sampler is located in order to maximize sampling performance.

The ISO 3171 specification is much more precise in comparison. In the ISO specification, the center of the pipe must have a composition that is within 5% of the average for the whole fluid. The ISO standard is specifically designed around minimizing the mixing error at the centre of the pipe for maximum sampler performance.

For a sampler to achieve the best performance, it is not enough to simply look at the C1/C2 ratio. An effective mixer must be designed to meet the criteria in the ISO 3171 specification. This ensures that the sampler probe is extracting a fluid sample that is representative of the whole.

Hydrogen Blending

• Hydrogen injection and blending is becoming more common with natural gas transmission pipelines.
• Hydrogen is injected into natural gas streams in order to reduce the emissions of the natural gas as it’s being burned.
• The concern is that because hydrogen does not readily mix with natural gas, this results in high concentrations that sit against the pipe wall as the flow moves downstream.
• It is critical to move the high concentration away from the pipe wall to reduce the risk of pipe damage due to sulfide stress cracking from hydrogen exposure.
• Properly mixed hydrogen will also help generate a proper representative sample of the gas composition.
• Even in agitated, high swirl flow, turbulent flows, the mixing is still significantly dampened as the fluid movements are large, bulk scale movements. For mixing to occur, small scale micro movement must happen.

CPA Flo2Gether Mixers

• Canada Pipeline Accessories offers a revolutionary, patented mixer design that has been developed through ten’s of thousands of hours of Computational Fluid Dynamics (CFD) research and testing.
• Simple, single machined plate design maximizes durability and compactness. No welded fins that are at risk of failure.
• Stocked in 316SS, ANSI Raised Face, sizes 2 – 10”. Other sizes, installation styles and material options are available upon request!
• CPA’s mixers are designed to insert into any existing piece of pipe and flange, no additional piping is required.
• CPA recommends the mixer to be placed roughly 3D from the point of injection. 75% mixing will occur roughly 10D downstream of the mixer.

Hydrogen Injection, Straight Pipe with No Mixing

Hydrogen Injection, Straight Pipe with CPA Flo2Gether Plate Mixer

Please contact CPA for more information and to discuss your specific application in more detail!

CPA Flo2Gether Multi Stage Mixer Assembly

When using the CPA Flo2Gether Multi Stage Mixer Assembly, Canada Pipeline Accessories recommends 3 – 5 internal pipe diameters downstream (L1) of the mixer for optimal sampler placement.

CPA Flow Conditioner + Flo2Gether Multi Stage Mixer Assembly

When using a CPA Flo2Gether Multi Stage Mixer Assembly with a CPA Flow Conditioner (CPA 50E/55E/65E) a minimum of 3-5 internal pipe diameters is recommended between (UL2) the flow conditioner and static mixer, with 3-5 internal pipe diameters downstream (L1) of the mixer for optimal sampler placement.

CPA Flo2Gether Single Stage Mixing Plate

When using the CPA Flo2Gether Multi Stage Mixer Assembly, Canada Pipeline Accessories recommends 3 – 5 internal pipe diameters downstream (L1) of the mixer for optimal sampler placement.

CPA Flow Conditioner + Flo2Gether Single Stage Mixing Plate

When using a CPA Flo2Gether Single Stage Mixing Plate with a CPA Flow Conditioner (CPA 50E/55E/65E) a minimum of 3-5 internal pipe diameters is recommended between (UL2) the flow conditioner and static mixer, with 3-5 internal pipe diameters downstream (L1) of the mixer for optimal sampler placement.

CPA Static Mixer – Full Multi Stage Mixer Assembly, FMSMA

All dimensions are in inches. Custom sizes are available, please contact CPA for more information!

CPA Static Mixer – Single Stage Mixing Plate, CPA SSRVM

All dimensions are in inches. Custom sizes are available, please contact CPA for more information!