Highlights:
1. 5N High-Purity Helium: Produces 99.999% helium for reuse in optical fiber preform manufacturing.
2. Approximately 75% Recovery Rate: Recovers valuable helium from exhaust gas, reducing fresh helium consumption.
3. Four Years of Reliable Operation: Demonstrates proven process performance and long-term operational stability.
Enabling 5N Helium Recycling with Proven Recovery Technology
In the manufacturing of optical fiber preforms, helium is widely used as a carrier or protective gas, with purity requirements of 5N (99.999%) or higher. At Weihai Changhe Optical Fiber Technology Co., Ltd., the helium-containing exhaust gas generated during production originally contained approximately 60% helium and was discharged after use, resulting in significant helium resource loss.
To improve helium utilization and reduce gas consumption, LifenGas implemented a helium recovery and purification solution that enables the recovered helium to be recycled back into the production process.
Advanced Purification for High-Purity Helium Recycling
The system employs a multi-stage purification process tailored to the composition of the exhaust gas. The process includes alkaline scrubbing for chlorine removal, catalytic oxidation for hydrogen removal, cryogenic condensation for nitrogen removal, and cryogenic adsorption for final purification.
Through this integrated process, the system produces high-purity helium at 5N (99.999%), meeting the customer's requirements for reuse in optical fiber preform manufacturing.
Proven Performance and Resource Efficiency
The helium recovery system has been operating reliably for four years, achieving an overall helium recovery rate of approximately 75%. By recovering and reusing helium that would otherwise be lost, the solution helps reduce fresh helium consumption, improve resource efficiency, and support more sustainable manufacturing operations.
This project demonstrates LifenGas's expertise in helium recovery and purification, delivering practical solutions that combine high-purity gas production, resource conservation, and long-term operational reliability.
Post time: Oct-22-2026
