The sulfur hexafluoride (SF₆) membrane is a high-performance separation material developed using advanced gas membrane technology. It is specifically designed for the recovery and purification of SF₆ gas.
Using a selective permeation mechanism, the membrane system efficiently separates SF₆ from gases such as nitrogen and oxygen. It offers high recovery rates, high purity, and low operating costs, making it widely applicable in gas recovery and environmental protection processes.
The SF₆ membrane system operates based on a pressure difference across the membrane, which drives gas separation. The separation is achieved through differences in gas solubility and diffusion rates within the membrane material.
Due to its higher molecular weight and boiling point, SF₆ has greater solubility and permeability in the membrane, allowing it to preferentially pass through. The feed gas is separated into permeate and retentate streams. The permeate stream is enriched in SF₆, while the retentate stream contains the purified remaining gases, enabling efficient separation and recovery.
l High Recovery Rate: SF₆ recovery can exceed 90%.
l High Purity: Achieves up to 99% SF₆ concentration after separation.
l Flexible Operation: Stable performance across a load range of 50% to 200%.
l Fast Return on Investment: Low system investment with a typical payback period of 3 to 12 months.
l Low Operating Cost: No moving parts in the membrane unit; energy consumption mainly comes from the compressor.
l Compact Design: Skid-mounted system with a small footprint, easy to install and maintain.
l Scalable System: Supports flexible capacity expansion for different processing needs.
l Environmentally Friendly: Clean operation with no pollution, enabling near-zero emissions.
l Chemical Production: Recovery and separation of monomer gases in processes such as polypropylene and polyethylene production.
l Silicone Industry: Recovery and reuse of raw gases such as chloromethane.
l Oil & Gas Industry: Vapor recovery at fuel stations and storage tanks, as well as natural gas dew point control.
l Reforming Gas Treatment: Recovery and utilization of light hydrocarbons from catalytic reforming off-gas and fuel gas streams.
| Item | Performance |
| Inlet Pressure | Up to 35 bar |
| SF₆ Recovery Rate | ＞90% |
| SF₆ Volume Fraction | ＜5% |
| Flow Rate Range | 1 ~ 1500 Nm³/h |
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