Bespoke

Algorithm

Adsorption

Process (computing)

Composite number

Engineering

Materials science

Pressure swing adsorption

Operating system

Hydrogen purifier

Computer science

Carbon fibers

Chemical engineering

Business

Hydrogen economy

Hydrogen

Organic chemistry

Advertising

Process engineering

Environmental science

Hydrogen fuel

Chemistry

Hydrogen production

International Journal of Hydrogen Energy

Hydrogen (H2) will play a key role in the future low-carbon energy society. The industrial production of hydrogen involves chemical reactions and purification steps. Pressure Swing Adsorption (PSA) is a versatile process able to produce ultrapure hydrogen (99.99+%) from various gas mixtures, resulting in the most widespread purification technology worldwide. In particular, the Polybed PSA system, having more than six beds and a complex cycle configuration, has proven to maximize H2 recovery and H2 throughput, exceeding 90% and 240 MMSCFD (265,000 Nm3 h−1) per single train, respectively. This paper systematically reviews the Polybed H2 PSA process for the first time, highlighting the latest technical advances and discussing its optimal integration in industrial clusters. A bespoke Polybed PSA process designed for simultaneous production of high-purity hydrogen and carbon dioxide (CO2) is also reviewed in light of the recent international directives aimed to reduce CO2 emissions and produce blue hydrogen.

Review of Polybed pressure swing adsorption for hydrogen purification