Adsorptive Bulk Separation for Upgrading Gas Streams

A displacement purge adsorptive bulk separation fuel gas upgrading system for hydrogen recovery/CO2 transfer from an anode exhaust of an molten carbonate fuel cell containing low quality hydrogen, comprising:

• a displacement purge adsorptive bulk separator having an air side and a hydrogen feed side;
• and
• a fuel cell having an anode and a cathode, the anode being fluidly coupled to a feed inlet for the hydrogen feed side of displacement purge adsorptive bulk separator, the anode providing low quality hydrogen at a relatively low pressure to the displacement purge adsorptive bulk separator, which provides an upgraded hydrogen feed from the displacement purge adsorptive bulk separator to the anode feed, the cathode being fluidly coupled to the air side of the displacement purge adsorptive bulk separator to receive a fluid stream comprising carbon dioxide.

A method for providing a gas product, comprising:

• providing a system comprising a bulk displacement purge adsorption separator fluidly coupled to at least one additional fluid stream processing device selected from an adsorptive fluid separator, an engine, or both;
• and
• supplying a feed gas stream to the system to produce an upgraded product gas.