CySim - Applications

1. Zero Length Column (ZLC)

  • Small amount of sample required
  • Rapid ranking of materials by capacity
  • Determination of equilibrium isotherms
  • Measurements of kinetics including very slow kinetics
Parameter estimation from desorption curves
  • Simulate the ZLC system with adsorption simulator: valves, ZLC and detector
  • Apply an optimisation routine to minimise the least-square error between the experimental data and the simulation
  • First, fit the blank, then fit multiple experiments at once
  • Investigate different equilibrium and mass transfer models

2. Dual-Piston PSA system (DP-PSA)

  • Different piston configurations: stroke lenghts, phase angle and cycle shapes
  • Fast cycles times up to 2 Hz
  • Different starting pressures: 0.1 to 20 bar
  • Different initial temperatures: 20 °C to 200 °C
Analysing the experimental pressure and temperature curves
  • Test materials at fast cycles
  • Analyse the mass and heat transfer kinetics

3. Carbon Capture and Storage interactive (CCSi)

Configuration
  • 6 step Skarstrom cycle
  • One sided pressure equalisation (PE) and product purge
  • HiSiv 3000 silicalite adsorbent from UOP
Optimisation of the cycle configuration
  • Systematic study over various cycle parameters: adsorption time, vacuum pressure, purge rate, feed composition, ...
  • Investigate influence on purity, recovery and energy consumption

4. Modular multi-bed PSA/VSA

Configuration
  • Up to six beds
  • Single or multi-stage configuration
  • Layered beds
  • Variety of steps: light and heavy reflux, pressure equalisation, ...
Simulation with the unibed approach
  • All columns cycle through the same steps
  • Steps with interaction between two columns
    • Output of one column is input of the other column
    • Add a buffer unit for each interaction pair
  • Data in buffer unit is half a cycle out of date
  • Same result at CSS
Plot showing the experimental and fitted ZLC desorption curves.
Plot showing the experimental and fitted ZLC desorption curves.
Plot showing the experimental and simulated DP-PSA pressure profile from Wang, Friedrich, Brandani: Characterisation of an automated Dual Piston Pressure Swing Adsorption (DP-PSA) system. Energy Procedia, in press.
Plot showing the experimental and simulated DP-PSA pressure profile from Wang, Friedrich, Brandani: Characterisation of an automated Dual Piston Pressure Swing Adsorption (DP-PSA) system. Energy Procedia, in press.
Plot showing the purity and recovery as a function of the adsorption feed time.
Plot showing the purity and recovery as a function of the adsorption feed time.