H2 dryer for power plant using electrolyzer

A method of drying hydrogen in a hydrogen production facility, the method comprising:

• producing a flow of hydrogen gas with an electrolyzer;
• drying the flow of hydrogen gas with a drying device;
• compressing the flow of hydrogen gas from the drying device with a compressor;
• and
• recirculating at least a portion of the flow of hydrogen gas from the compressor to the drying device to maintain pressure distribution within the drying device.

A controller for operating a hydrogen production facility comprising an electrolyzer, the controller comprising:

• a pressure sensor interface for receiving input signals from a compressor configured to receive a hydrogen output from the electrolyzer;
• a kickback valve interface for providing an output signal to a kickback valve that controls recirculation between output of the compressor an inlet of a hydrogen dryer;
• and
• memory having stored therein instructions for:
• operating the kickback valve based on compressor suction pressures received at the pressure sensor interface;
• operating the electrolyzer to produce the hydrogen output;
• and
• operating a drying device that receives the hydrogen output from the electrolyzer.

A controller for operating a hydrogen production facility comprising an electrolyzer, the controller comprising:

• a pressure sensor interface for receiving input signals from a compressor configured to receive a hydrogen output from the electrolyzer;
• a kickback valve interface for providing an output signal to a kickback valve that controls recirculation between output of the compressor an inlet of a hydrogen dryer;
• memory having stored therein instructions for:
• operating the kickback valve based on compressor suction pressures received at the pressure sensor interface;
• a first pressure sensor configured to sense pressure of hydrogen gas at an inlet of the compressor;
• and
• a second pressure sensor configured to sense pressure of hydrogen gas at an outlet of the compressor.