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

Claim 20:
21. A method of producing a renewable fuel comprising:
a) identifying a plurality sites, each site comprising a source of biogas;
b) at each site,
(i) removing one or more components from the biogas to provide partially purified biogas, wherein said one or more components includes water, hydrogen sulfide, carbon dioxide, or any combination thereof;
(ii) feeding the partially purified biogas into a pressure vessel system to a pressure greater than 6.9 MPa;

c) transporting the pressure vessel system containing the partially purified biogas from each site directly to a central processing site;
d) unloading partially purified biogas from each pressure vessel system at the central processing site, wherein said unloading reduces a pressure of the partially purified biogas and is conducted so as to reduce risk of phase change resulting from the pressure reduction, and wherein said unloading comprises heating gas within at least one pressure vessel in one of the pressure vessel systems, and controlling a flow rate of gas leaving each pressure vessel system to provide a total decant time greater than 30 minutes; and,
e) feeding the biogas unloaded in step (d) into a biogas upgrading system, a fuel production process, or a combination thereof.