Research Development
- Mixing and agitation tests
- Determination of mixing times
- Local velocity profiles
- Optimization of the impeller selection
- Setting / adjustment of temperatur profiles
- Solid draw down / stirring in of solids
- Dissolving tests
- et cetera
CFD – Computational Fluid Dynamics
By means of the innovative method CFD – Computational Fluid Dynamics – predeterminations of mixing results are possible without complex and expensive trails and tests. Those data help to optimize difficult mixing and heat transfer tasks.
Calculation example:
- Local flow velocities
- Energy dissipation / power consumption
- Wall velocities
- Dead bands / dead spaces
- Concentration profile
- Mixing time
- Temperature distribution in the reactor
- Flow stress / load of installation components
- Heating-/ cooling time
- Heating load/ - cooling load calculations
FEM – Fenite Element Method
FEM – Finite Element Method – is a modern method which is used by STC for the mechanical design of equipment with regard to stress and vibration behaviour, as well as for resonance problems by means of complex modal analysis, if analytic methods are not precise enough.
Calculation example:
- Deformation of the system, e.g. agitator on vessel top
- Local stress maxima e.g. by shock-cooling of tube bundle heat exchanger
- Dynamic stress analysis e.g. impellers
- Vibration behaviour e.g. natural frequency of agitator on vessel top
- Baffle loads
Process calculations
We perform calculations of:
- Agitator- and mixing technology
- Mixing time
- Solid sedimentation velocity
- Solving time
- Power consumption
- Power drop under gassed conditions
- OTR-Oxygen transfer rate
- kLA –Volumetric mass transfer coefficient
- Impeller flooding point
- Pumping rate of draft tube applications
- Density distribution in the vessel
- heating- / cooling technology
- Traverse / support frames
- Nozzle loads while operation
- Baffle
- Cavitation
- Notch root stress analysis
- Shaft deflection
- Starting behaviour of agitator systems
- Critical Speed
- Machine dynamics / vibration analysis
- Strength calculation
- Machine components, e.g.
- Bolts
- Bearings (life time)
- Pins, studs
- Springs
- Couplings
- Belts, chains
- Pressure vessels
- AD 2000 / EN ISO
- BS 5500
- ASME, u. a.
Up-scaling from laboratory to production scale
| Laboratory Scale | Industrial Scale | Large Scale |
|---|---|---|
| 1 Litre – 1.000 Litre | 1 m³ - 100 m³ | >100 m³ - 5.000 m³ |
| 0,25 kW – 3 kW | 4 kW – 1.000 kW | 55 kW – 2.500 kW |
Failure analysis
- Wear analysis
- Material analysis
- Stress analysis
- Vibration analysis
- Load analysis
- Welding engineering
- Production technology / surface engineering
- Mixing technology
Process development
STC as partner for developing new methods or optimize existing processes
- Idea
- Concept
- Valuation of theoretical approaches - feasibility analysis
- Practical test
- CFD
- Laboratory system
- Pilot plant system
- Production system
- Process optimization