The liquid or suspension flows longitudinally through the static mixer and is repeatedly divided into several partial flows by the static mixer elements. Due to the very high partial flow generation with respective remixing, a very high homogeneity is achieved with at the same time gentle conditions such as low shear forces and pressure losses. After the static mixer, the piping is continued in the inlet diameter with a homogeneously mixed medium.
In many applications a specific length Lm/D of 5 is sufficient, see orange curve, to achieve a homogeneous mixture. Due to the short specific length and the design, the pressure loss can be minimized at the same time, see blue curve for a yeast homogenization application. In laminar processes (Re <100), the resulting shear forces are sometimes significantly lower than in upstream and downstream pumps and valves.
CIP/SIP: The CIP is carried out lengthwise through the static mixer. In the case of lateral feed dosage, it is recommended to clean the feed inlet with the CIP solution via a bypass and then sterilize it with steam (SIP). The hygienic design ensures long CIP/SIP-free intervals.