LIST TECHNOLOGY AG

The LIST KneaderReactor Technology fills the gab and successfully combines the benefits of conventional process equipment, e.g.… Extruder Thin-Film Reactor Continuous Stirred-Tank Reactor (CSTR) Rotary Disc Reactor …with many other process characteristics which are unique for LIST. It provides an exceptional toolbox for developing new innovative and economical products and processes helping our customers to stay up to date with process technology. Your benefits Effective self-cleaning to minimize dead zones, product accumulation and product degradation Excellent kneading and mixing for better homogenization Effective heat transfer High surface renewal efficiency Large free vapour volume Precise and uniform temperature control due to large heat transfer areas Continuous or batch processing Process intensification Processing of sticky and highly viscous products Residence time is independent from agitator speed Wide and flexible range of average residence times Wide turndown...

The extremely versatile LIST Single Shaft KneaderReactors are in successful operation in a wide range of industrial-scale process applications, e.g. Crystallization Drying Dissolving Main Evaporation Devolatilization Torrefaction and others The inovative design features a single mixing shaft whose kneading elements intermesh with counter-hooks attached to process housing providing a self-cleaning effect. The rotation speed and geometry of the mixing shaft and kneading elements are customized designed to optimize the prozess efficiency. With an operating volume up to 20 m3, it provides the capacity to handle largest production capacities. Typical design specifications: Volume: 7 … 20´000 l Operating pressure: 0.001 ... 16.0 ... 100 bar (a) Operating temperature: -100 ... +400 °C Operation mode: Batch or Continuous Installed Power: ... 2.5 MW Torque: ... 500 kNm Drive: Hydraulic drive units or electric motor with or without frequency converter Shaft seal: Stuffing box or...

Compared to the single-shaft units, LIST Twin-Shaft KneaderReactors offer even better mixing and kneading behavior, more effective self-cleaning properties and the more efficient renewal of boundary layers. These and many other features make the LIST Twin-Shaft KneaderReactor the best choice for processes such as, Bulk polymerization Polycondensation Drying Dissolving Sublimation and others In a LIST Twin-Shaft KneaderReactor, the high-torque shafts are designed to rotate in either the same direction or in counter-direction. In both cases, the kneading elements on the shafts intermesh to generate intensive surface renewal and mixing. At the same time, shear rates remain low. LIST Twin Shaft KneaderReactors are also nearly 100% self-cleaning. Typical design specifications: Volume: 3 … 10´000 l Operating pressure: 0.001 ... 10.0 bar (a) Operating temperature: -100 ... +400 °C Operation mode: Batch or Continuous Installed Power: ... 1.5 MW Torque: ... 500 kNm Drive: Hydraulic...

The LIST KneaderReactors are also available as laboratory or pilot plant sizes. During the development phase of a new product, many tests must be made. With a laboratory size LIST KneaderReactor with a volume of about 3 l, which is always available in your research center, this development is significantly accelerated. Innovative ideas can be tried out immediately and the feasibility confirmed. This approach helps our customers to take the right path at an early stage, thus saving uncountable costs and time. For further test at your pilot plant center, which will confirm the industrial maturity of the new product and the process, pilot plant size KneaderReactors are also available. The design of these customized units incorporates all findings of the previous development work. Typical design specifications: Volume: 3 ... 180 liters Operating pressure: 0.001 ... 16.0 bar (a) Operating temperature: -20 ... +400 °C Operation mode: Batch and/or Continuous Drive: Hydraulic drive...

Besides the KneaderReactors LIST provides customized auxiliary equipment for the feeding and discharging of products and vapor. Some examples of typical equipment: Pre-Mixing Units Feed Flash-Valves Feed Single- or Twin-Screws Discharge Single- or Twin-Screws Discharge Valves Dust Filters Buffer and Vacuum-Lock Vessels etc.