Air Liquide Engineering & Construction uses pressure swing adsorption (PSA) technology to recover and purify hydrogen from various hydrogen-rich streams. This technology leverages the differential adsorption characteristics of molecular sieve adsorbents for different gases and specialized hydrogen production equipment to separate them at specific pressures, making it an efficient method for producing high-purity hydrogen.
Automated Processes
The feed gas for PSA can be raw hydrogen from a wide variety of sources, including steam methane reforming, partial oxidation, cryogenic purification, methanol plant purge gases, ethylene offgas, styrene offgas, gasification and ammonia plants.
During the PSA process, the hydrogen is recovered and purified at a pressure close to the feed pressure, while adsorbed impurities are removed by lowering the pressure. The PSA tail-gas, which contains the impurities, can then be sent back to the fuel system even without a tail-gas compressor. The entire process is automatic.
Air Liquide Engineering & Construction uses the most advanced adsorbents on the market with patented cycles that are optimized for recovery and productivity rates. The units are made for outdoor and unmanned operation, and are designed to be both compact and fully skid-mounted.
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Advantages & Key Figures
- Produces hydrogen of up to 99.9999% purity
- On-stream factor is typically more than 99.9%
- Operates with a wide variety of feed gases
- Features patented cycles and advanced adsorbents
- Designed for unmanned, outdoor use
- Units are compact and skid-mounted.
- Capacity: 5 000 to 200 000 normal cubic meters per hour (Nm3/h)
- H2 recovery rate: 60 to 90%
- Turndown: as low as 25%
Xintao Molecular Sieve for Hydrogen Purification
Xintao 5A Molecular Sieve for hydrogen production, is a special hydrogen molecular sieves for H2 production by pressure swing adsorption. It has the characteristics of large adsorption capacity, fast adsorption and desorption rate, and high mechanical strength, which is beneficial to the long-term stable operation of customer equipment or products. Xintao provides various molecular sieve specifications and parameters to meet your hydrogen production needs.
