Patent ID: 11946006
Assignee: LOGEN CORPORATION
Field: Biotechnology (Chemistry)
Classification: CPC C  Y | IPC C

Claim 19:
20. A method of producing a renewable fuel comprising:
a) filling a pressure vessel system with biogas to a pressure greater than 6.9 MPa and less than 13.8 MPa, the pressure vessel system having a nominal pressure rating greater than 6.9 MPa at 21° C., said filling comprising filling the pressure vessel system such that a density of the biogas therein is greater than the design density of natural gas;
b) transporting the pressure vessel system containing pressurized biogas from a first location to a second location;
c) unloading biogas from the pressure vessel system at the second location, said unloading reducing a pressure of the biogas and comprising controlling a flow rate to provide a total decant time greater than 1 hour so as to reduce risk of phase change resulting from the pressure reduction; and
d) feeding the biogas unloaded in step (c) into a biogas upgrading system, a fuel production process, or a combination thereof.