New multi-injector design
ANDRITZ has developed a new multi-injector design for the primary stage in deinking flotation systems. The multi-injector is tailor-made for effective ink removal and consumes 50% less energy than previous designs. The new design optimizes the air intake in the injector as well as the distribution within the flotation cell. Furthermore, a newly developed pump series – which is more energy efficient – is utilized.
The new multi-injector was designed using computational fluid dynamics (CFD) for modelling an optimum air bubble size and distribution to obtain the best deinking performance. It is based on a reshaped nozzle geometry, which also reduces the risk of plugging.
- In new SelectaFlot systems
- Rebuild package of existing SelectaFlot cells, providing lowest ROI
- Rebuild of competitor cells for increased performance and lower operating costs
FoamEx: mechanical destruction of foam (especially flotation foam)
The foam generated in flotation deinking is collected and discharged into the foam tank. FoamEx sits on top of the foam tank and destroys foam by creating a partial vacuum through the rotation of the conically shaped rotor. The liquefied foam, which is heavily loaded with ink and dirt, is discharged at the top of the cone.