Static mixer


Introduction


A static mixer is a precision engineered device for the continuous mixing of fluid materials.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. The energy needed for mixing comes from a loss in pressure as fluids flow through the static mixer.Common type consists of mixer elements contained in a cylindrical (tube) or squared housing. Mixer size can vary from about 6 mm to 6 meters diameter. Typical construction materials for static mixer components included stainless steel, polypropylene, Teflon, PVDF, PVC, CPVC and polyacetal. The latest design involve static mixing elements made of glass-lined steel.

Design

In the housed-elements design the static mixer elements consist of a series of baffles made of metal or a variety of plastics. Similarly, the mixer housing can be made of metal or plastic. The housed-elements design incorporates a method for delivering two streams of fluids into the static mixer. As the streams move through the mixer, the non-moving elements continuously blend the materials. Complete mixing depends on many variables including the fluids' properties, tube inner diameter, number of elements and their design. The housed-elements mixer's fixed, typically helical elements can simultaneously produce patterns of flow division and radial mixing:

Flow division: In laminar flow, a processed material divides at the leading edge of each element of the mixer and follows the channels created by the element shape. At each succeeding element, the two channels are further divided, resulting in an exponential increase in stratification. The number of striations produced is 2n where 'n' is the number of elements in the mixer.
Radial mixing: In either turbulent flow or laminar flow, rotational circulation of a processed material around its own hydraulic center in each channel of the mixer causes radial mixing of the material. Processed material is intermixed to reduce or eliminate radial gradients in temperature, velocity and material composition.

Basically 8 types of element as below

MA TYPE

MB TYPE

MC TYPE

MD TYPE

MU TYPE

MV TYPE

MX TYPE

 

MY TYPE

Applications

Today, static mixers are used for a wide range of different applications in many different market segments. A common application is mixing two-component adhesives (e.g., epoxy) and sealants (see Resin casting). Other applications include wastewater treatment and chemical processing. Static mixers can be used in the refinery and oil and gas markets as well, for example in bitumen processing or for desalting crude oil. In polymer production, static mixers can be used to facilitate polymerization reactions or for the admixing of liquid additives.

Ordering information

Products Nominal diameter (mm)
Element type
QTY of element
Housing material Element  material
ST

25-25mm

32-32mm

40-40mm

50-50mm

65-65mm

80-80mm

100-100mm

125-125mm

150-150mm

200-200mm

250-250mm

300-300mm

MA-MA TYPE

MB-MB TYPE

MC-MC TYPE

MD-MD TYPE

MU-MU TYPE

MV-MV TYPE

MX-MX TYPE

MY-MY TYPE

 

 

 

04- 4 elements

06-6 elements

08-8 elements

10-10 elements

12-12 elements

 

S4-Stainless steel 304

S6-Stainless steel 316L

UPVC-UPVC

PP-PP

CS-Carbon steel

FRP-FRP

 

S4-Stainless steel 304

S6-Stainless steel 316L

UPVC-UPVC

PP-PP

CS-Carbon steel

FRP-FRP