Hydrogen purification system and method

A hydrogen purification system comprising:

• a dryer system including a plurality of dryers, each dryer including an adsorption bed for drying hydrogen gas, the dryer configured to adsorb moisture in the adsorption bed from the hydrogen gas in an adsorption mode, the dryer configured to remove moisture from the adsorption bed in a regeneration mode, the plurality of dryers include a first dryer group including a first dryer and a second dryer;
• a conduit system including pipes and control valves, the conduit system configured to connect the plurality of dryers to a hydrogen gas feed and to a hydrogen gas discharge;
• and
• a controller operably coupled to the conduit system to control the control valves to control flow of gas through the pipes;
• wherein the first dryer and the second dryer are arranged in parallel in the adsorption mode allowing parallel flow of gas through the first dryer and the second dryer;
• and
• wherein the regeneration mode includes an independent regeneration mode and a series regeneration mode, the controller operating the conduit system to supply regeneration gas flow to the first dryer independent of the second dryer in the independent regeneration mode, the controller operating the conduit system to supply regeneration gas flow from the first dryer to the second dryer in series in the series regeneration mode.