Hydrogen gas compression system

A hydrogen gas compression system comprising:

• a primary gas inlet through which to receive hydrogen gas;
• a compression stage having:
• an intake that receives gas from the primary gas inlet,
• at least one rotary compressor that has:
• a working chamber,
• one or more rotating elements housed internally of the working chamber that are driven via an input shaft to compress gas passing through the working chamber, and
• a liquid water inlet through which liquid water is delivered into the working chamber to provide lubrication to the rotating elements, and sealing of the working chamber, and
• a compression stage discharge that is in communication with the working chamber, through which to discharge a fluid stream containing at least compressed hydrogen gas and water;
• a separation stage that is in communication with the compression stage discharge and includes at least one separator that is configured to separate a liquid component from the fluid stream and thereby discharge a gas stream;
• a drying stage that is in communication with the separation stage and includes at least one adsorption-type gas dryer that is configured to adsorb and thereby remove water vapour from the gas stream;
• a primary gas outlet that is in communication with the drying stage, and through which to discharge dry compressed hydrogen gas;
• and
• an encapsulating vessel defining a cavity within which the separation stage and drying stage are located, the encapsulating vessel having a port in communication with the primary gas outlet.