Hydrogen with purity of purity of up to 99.99% extracted; uses ‘pressure swing adsorption technology’ for extraction.
Here’s an article posted in Market Screener that talks about the first hydrogen extraction system unveiled by Towngas (Hong Kong).
According to the article,
- Towngas sets up Hong Kong’s first hydrogen extraction system from gas network
- System is efficient, safe, and cost-effective
- Utilizes pressure swing adsorption technology for 99.99% hydrogen purity
- Integrated with existing underground gas pipeline network
The hydrogen extraction system here is unique; let us see how it works:
- Existing Gas Network: Towngas supplies a 50% hydrogen mix through its extensive underground pipeline network for household use. This gas mix is primarily composed of hydrogen, methane, and carbon dioxide.
- Pressure Swing Adsorption Technology: Towngas uses pressure swing adsorption technology to separate the hydrogen from the gas mixture. This process involves applying high pressure to the gas mixture, which causes the different molecular components to separate based on their molecular characteristics. Hydrogen is adsorbed onto a specific material, while the other components are released.
- Hydrogen Extraction: The hydrogen-rich gas is then subjected to a pressure swing adsorption cycle, where the pressure is alternately increased and decreased. This cycle allows the hydrogen to be desorbed from the material and collected as a high-purity gas.
The extracted hydrogen can achieve a purity level of up to 99.99%, making it suitable for use in hydrogen fuel cell applications, such as heavy vehicles like buses and ships.
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Overall, Towngas’ hydrogen extraction system leverages its existing infrastructure and expertise to provide a cost-effective and efficient solution for the production and distribution of high-purity hydrogen in Hong Kong.
