Integrated fuel production and electricity generation

A method of producing fuel and electricity from a gas stream of biogenic origin, the method comprising:

• providing a gas stream of biogenic origin;
• reducing a hydrogen sulfide content of the gas stream by passing the gas stream through a first media adapted to remove at least some hydrogen sulfide in the gas;
• reducing a quantity of particulates and free moisture entrained in the gas stream by passing the gas stream through a filtration stage;
• compressing the gas stream within a primary compression stage comprising a sealed scroll compressor;
• reducing a moisture content of the gas stream by passing the gas through a moisture removal stage configured to condense and separate remaining moisture from the gas stream;
• reducing a siloxane content of the gas stream by passing the gas stream through a second media adapted to remove at least some siloxanes from the gas stream;
• selectively directing the gas stream for at least one of fuel production, electrical generation, and direct use;
• and
• reducing a carbon dioxide content of the gas stream by separating carbon dioxide from the gas stream with a single-stage permeable membrane.

A system for producing fuel from a gas stream of biogenic origin, the system comprising:

• a gas inlet configured to convey a gas stream from a feed source to the system;
• a hydrogen sulfide removal stage operably connected downstream of the gas inlet, the hydrogen sulfide removal stage including a first vessel configured to receive a first media that removes hydrogen sulfide entrained in a gas stream;
• a filtration stage operably connected downstream of the gas inlet and configured to remove particulates and free moisture entrained in the gas stream;
• a primary compression stage operably connected downstream of the gas inlet and configured to elevate a pressure of the gas stream;
• a moisture removal stage operably connected downstream of the gas inlet and configured to condense and separate remaining moisture from the gas stream;
• a siloxane removal stage operably connected downstream of the gas inlet, the siloxane removal stage including a second vessel configured to receive a second media which removes at least some siloxanes from the gas stream;
• a carbon dioxide removal stage operably connected downstream of the gas inlet and including a single-stage membrane configured to divide the gas stream into a permeate gas stream and a residual gas stream;
• a secondary compression stage operably connected downstream of the carbon dioxide removal stage and configured to elevate a pressure of the residual gas stream to a level suitable for distribution to CNG-compatible vehicles;
• and
• a permeate discharge line operably connected downstream of the carbon dioxide removal stage and configured to supply the permeate gas stream for use in at least one of an electrical generator set and a direct-use component.

A method of producing fuel and electricity from a gas stream of biogenic origin, the method comprising:

• providing a gas stream of biogenic origin;
• reducing a hydrogen sulfide content of the gas stream by passing the gas stream through a first media adapted to remove at least some hydrogen sulfide in the gas;
• reducing a quantity of particulates and free moisture entrained in the gas stream by passing the gas stream through a filtration stage;
• compressing the gas stream within a primary compression stage with a first compressor;
• reducing a moisture content of the gas stream by passing the gas through a the moisture removal stage configured to condense and separate remaining moisture from the gas stream;
• reducing a siloxane content of the gas stream by passing the gas stream through a second media adapted to remove at least some siloxanes from the gas stream;
• reducing a carbon dioxide content of the gas stream with a single-stage membrane configured to divide the gas stream into a permeate gas stream and a residual gas stream;
• elevating a pressure of the residual gas stream to a level suitable for distribution to CNG-compatible vehicles with a secondary compression stage;
• and
• supplying the permeate gas stream to be used as a fuel in at least one of an electrical generator set and a direct-use component.