Patent ID: 11926906
Assignee: AIR PRODUCTS AND CHEMICALS, INC.
Field: Surface technology, coating (Chemistry)
Classification: CPC C  F  Y | IPC C  F

Claim 28:
29. An apparatus for producing compressed hydrogen gas, the apparatus comprising:
a plurality of electrolysers arranged in parallel for electrolysing water to provide hydrogen gas;
an electricity generation system for generating electricity to power the plurality of electrolysers, the electricity generation system being in electrically conductive communication with the plurality of electrolysers;
a multistage compression system for compressing the hydrogen gas to provide a compressed hydrogen gas, the multistage compression system comprising a feed end, an outlet end and at least one centrifugal compression stage having a pre-determined feed temperature and pressure and wherein hydrogen gas is fed to the feed end having a pre-determined relative humidity, the feed end being in fluid flow communication with the plurality of electrolysers via a feed header;
a saturator for adding water and heat to the hydrogen gas upstream of the centrifugal compression stage as required for humidifying the hydrogen gas to the pre-determined relative humidity at the pre-determined feed temperature and pressure; and
a separator for removing excess liquid water from the hydrogen gas upstream of the centrifugal compression stage.