Application background
The plant experienced total-sulfur breakthrough spikes into the reformer, driving reduced hydrogen yield and premature LT-shift catalyst deactivation.
Feed gas & process conditions
| Gas | Desulfurized natural gas (post-HDS) |
|---|---|
| Flow | 30 000 Nm³/h |
| Pressure | 3.5 MPa (g) |
| Temperature | 350 °C |
| Inlet impurities | Residual H₂S 5 ppm, COS 2 ppm, mercaptans 1 ppm |
| Outlet requirement | Total S < 0.1 ppm (v) |
Main impurity challenge
Consistent sub-0.1 ppm total sulfur at high space velocity, with long service life between change-outs and no pressure drop increase.
Recommended product
Desulfurizers
Kaiteli ABS-S220 Mid-Temperature Desulfurizer
Copper-promoted ZnO absorbent with bimodal pore structure and 28 wt% sulfur capacity.
Technical result
- Total outlet S consistently < 0.1 ppm across 24-month operating campaign.
- Pressure drop stable throughout run; no premature change-out required.
- LT-shift catalyst life restored to design.
Customer value
Restored full hydrogen production capacity, extended downstream catalyst life and doubled the guard-bed change-out interval.