Hydrodesulphurization case study
Customer objective
Target sulphur content diesel: 10 ppm (ULSD)
- Catalyst testing under (most) ideal conditions
- Isothermal conditions
- Plug flow conditions
- No catalyst bypassing
- Limited pressure drop
- Fully automated screening equipment ensures controlled reproducibleprocess conditions
- Gas liquid separation / stripping for each individual reactor
Our approach
Testing conditions:
- 16 reactors filled with reference catalyst (extrudate 1.6 mm)
- Catalysts bed length 30 cm
- Feed ~ 2% sulphur content
- Hydrogen feed ratio: 250 Nl/kg
- Diesel flow Low LHSV
- Pressure 40 bar
-
2 weeks of continuous testing
A satisfied customer
- Good control of flows, pressure and temperature.
- Bandwidth T required is 4 °C (SD = 1 °C).
- Liquid yields within 100% ± 2.5%.
- Reproducible sulphur conversion.
- Standard deviation sulphur levels 1 ppm.
- HDS catalysts can be screened accurately even on 2 ppm S (2 - 3 °C) differences.
- Reduction of waste and replace toxic metals or metal oxides incurrent catalysts.
Accurate condition control
Excellent performance measurement
Effluent sulfur content Arrhenius plot
Assumed first order in Sulfur (n=1)
B = -11060, Ea=8.314x11.06 = 92 kJ / molS
