Removal of very acid gases
SPREX® is a new technology developed by TOTAL, IFP and PROSERNAT for the bulk removal of acid gases from highly sour natural gases, upstream of amine units.
SPREX® has been developed to meet the challenges of the development of very sour (>10% acid gases) natural gases:
- Reduced sweetening costs
- Sulfur market saturation
- Acid gas reinjection
Used as pre-treatment upstream conventional sweetening processes (e.g. amine process)
- H2S removal efficiencies up to 80% or 90%
- Direct treatment of water saturated feed gases under certain conditions
- Complete removal of mercaptans
- Acid gas produced as a pumpable liquid stream for reinjection.
- Significant savings on the overall treatment + reinjection scheme with Sprex®:
CAPEX – 17%; OPEX – 35% (energy savings mainly)
Sprex® demonstration pilot
A joint development between TOTAL, IFP and PROSERNAT
Prosernat scope
- Demonstration plant design, fabrication, on field installation
Demonstration main plant characteristics :
- Capacity: 2.5 MMSCFD
- Feed gas under 915 psig
- Feed gas composition: H2S 18 – 40% vol CO2 10.5 – 8.7% vol
- 5 different feed trays
- Variable reboiler duty
- Multiple on-line analysis points
Status
- Pilot test completed
