A Static Mixer, Such as the Super Stainless SV Static Mixer

A static mixer, like the Super stainless SV static mixer, is an efficient mixing device without moving parts. It is widely used in various industries, including petroleum refining, chemical, medicine, food, mining, plastic extrusion, and environmental protection. Depending on specific corrosion resistance requirements, the static inline mixer can be a Stainless Static Mixer 304 or Stainless Static Mixer 316L, offering significant advantages over traditional mixing equipment like mixers, colloid mills, homogenizers, and Venturi tubes.

Compared to these traditional devices, the Super stainless SV static mixer boasts a simple process, compact structure, low energy consumption, low investment, high operational flexibility, no need for maintenance, and excellent mixing performance. The Stainless Static Mixer 304 and Stainless Static Mixer 316L are particularly chosen for their durability and resistance to various corrosive environments, making them suitable for a broad range of applications.

Any process involving the mixing, emulsification, neutralization, absorption, extraction, reaction, and enhanced heat transfer of liquid-liquid, liquid-gas, liquid-solid, and gas can benefit from the use of a Super stainless SV static mixer or other types of stainless static mixers, effectively replacing traditional related equipment. These mixers provide a reliable and efficient solution for achieving uniform mixtures in a wide array of industrial processes.

Operational Principle

The mixing process of a static mixer is carried out by a series of mixing units of different specifications installed in a hollow pipeline. Due to the action of the mixing unit, the fluid sometimes rotates left and sometimes turns right, constantly changing the flow direction. This not only pushes the central fluid towards the periphery but also pushes the peripheral fluid towards the center, resulting in a good radial mixing effect. At the same time, the rotational action of the fluid itself also occurs at the interface of adjacent components, and this perfect radial circulation mixing effect achieves the goal of uniform mixing of materials.

Static mixers can be applied to processes such as liquid-liquid, liquid-gas, liquid-solid, and gas-gas mixing, emulsification, neutralization, absorption, extraction, reaction, and enhanced heat transfer. They can achieve high viscosity and are applied in different flow regimes (laminar, transitional, turbulent) within the scope, for intermittent and continuous operations.

Application Scenarios

• Liquid-Liquid Mixture: From the flow layer to turbulence, fluids with viscosity within the range of 10 MPa·s can achieve good mixing. The minimum diameter of dispersed droplets can reach 1-2 µm, and the size distribution is uniform.
• Liquid-Gas Mixture: The static mixer can continuously update and fully contact the phase interface of the liquid-gas two-phase components and can replace the bubbling tower and sieve plate tower under certain conditions.
• Liquid-Solid Mixture: When a small amount of solid particles or powder (solid accounts for about 5% of the liquid area) is mixed with the liquid under turbulent conditions, a static mixer can be used to force the solid particles or powder to fully disperse, meeting the requirements of liquid extraction or decolorization.
• Gas-Gas Mixture: Can be used for mixing cold and hot gases, as well as mixing different gas components.
• Enhanced Heat Transfer: Due to the use of static mixers, the contact area of the fluid is increased, which in turn increases the heat transfer coefficient. Generally speaking, for gas cooling or heating, if a static mixer is used, the heat transfer system of the gas is enhanced by 8 times; for the heating of viscous liquids, the heating coefficient can be increased by 5 times; for gas condensation with a large amount of non-condensable gas, the heat transfer coefficient can be increased by 8.5 times; for high heat transfer of molecular melt, it can reduce the temperature and viscosity gradient on the cross-section of the tube.

Application Scope

A static mixer is an efficient mixing device without moving parts. In addition to being widely used in the petroleum refining and chemical industries, it is also widely used in sectors such as medicine, food, mining, plastic extrusion, and environmental protection. Compared with traditional mixing equipment such as mixers, colloid mills, homogenizers, and Venturi tubes, it has the advantages of simple process, compact structure, low energy consumption, low investment, high operational flexibility, no need for maintenance, and good mixing performance. Any process involving the mixing, emulsification, neutralization, absorption, extraction, reaction, and enhanced heat transfer of liquid-liquid, liquid-gas, liquid-solid, and gas can replace traditional related equipment.

ZQM static mixer continuous process ensures that the mixing process is not interrupted; minimal shear force does not damage the mixture, such as flocs; the mixing effect is computationally controllable (CoV deviation), with a maximum CoV range of 5% according to customer requirements. The concentration of the fluid across the entire cross-section is continuous and balanced, therefore the measured values have high representativeness and can effectively control the device; the mixing distance and installation space are very small, and the static mixer itself is a part of the pipeline, which can be regarded as a special pipeline, avoiding the shortcomings of traditional mixing tanks and so on; the mass transfer efficiency is very high, and the pressure drop and energy consumption are very low; there are no moving parts, no wear and tear, and almost no maintenance costs; it will not be blocked, and the installation method and material can be of any shape, size, and material; compulsory mixing of the entire process logistics can greatly reduce the volume of storage tanks, and static mixers can even eliminate the use of storage tanks.

The pressure drop calculation of the product is based on the hydraulic diameter and takes into account the influence of porosity and friction coefficient. The static mixer is used in pipelines and does not produce a significant pressure drop. When the system pressure using a static mixer is relatively high, the pressure drop generated by the static mixer can be ignored. If the system pressure using a static mixer is relatively low, it is necessary to verify the pressure drop of the static mixer. The pressure drop calculation method for static mixers varies depending on the model of the mixer.

Static Mixer Installation Model

• SV Gas-Liquid Phase: Vertical installation (parallel and counter flow)
• Liquid Gas Phase: Installed horizontally or vertically (from bottom to top), with similar device effects
• Gas Gas Phase: Horizontal or vertical (with small density difference in gas phase, no direction limit) installation
• SX Liquid Liquid Phase: Horizontal or vertical (from bottom to top) installation, device effect is similar to SL
• SH Liquid Solid Phase: Horizontal or vertical (bottom-up) installation
• SK Gas Liquid Phase: Flange dimensions at both ends are determined by enlarging the nominal diameter of the product by one grid, using SL type installation form

Installation Dimensions

Typical Applications

• Mixing gasoline, diesel, oil, salt water
• Neutralize acid
• Neutralize gas

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