At the recent ACHEMA trade fair in Frankfurt, specialty chemicals company, Evonik, presented its latest membrane product development, the SEPURAN NG for natural gas processing.
Sepuran NG is a strong, hollow-fibre membrane, based on a high-performance plastic that can withstand extreme pressure and temperatures. This enables particularly selective separation of the sour gases from the natural gas and high tolerance of the higher hydrocarbons contained in the natural gas. The company says that this new separation technology features significantly increased recovery of methane.
The modular structure of Sepuran NG has been designed for conventional, membrane-based natural gas processing plants so that, during the membrane exchange, no further adaptations are required to the existing equipment.
The membrane is designed for the challenging process conditions of natural gas processing with complex gas compositions and typical pressure and temperature conditions up to 70 °C. It can be used particularly effectively in natural gas sources with a high concentration of carbon dioxide because, under these conditions, the separating properties of the membrane remain intact.