Patent ID: 11883780
Assignee: CALIFORNIA BIOENERGY LLC
Field: Chemical engineering (Chemistry)
Classification: CPC B  C  A  G  H  Y | IPC A  B  C  G  H

Claim 21:
22. A biogas collection, purification and delivery system comprising:
a plurality of remote sources of biogas from digesters of organic animal waste, the plurality of biogas sources each having a flexible roof, and each configured either,
with sensors to detect an availability of biogas at the respective ones of the plurality of remote sources and transmitters to transmit data about availability to a controller or
to permit an estimation of biogas availability by human inspection;

a network of conduits configured to convey biogas from the plurality of remote sources of biogas;
a central processing facility receiving biogas conveyed from the plurality of sources of biogas and processing the biogas into combustible biomethane, the central processing facility having:
a biogas feed compressor controlledly charging biogas to the central processing facility;
a biogas hydrogen sulfide removal stage;
an activated carbon scrubber;
a carbon dioxide removal stage;
a cooler positioned between the activated carbon scrubber and the carbon dioxide removal stage, wherein the cooler is configured to lower a temperature of the biogas; and
a biomethane compressor positioned downstream from the carbon dioxide removal stage and configured to compress the biomethane;
wherein each of at least some of the remote biogas sources include a fuel cell configured to convert biogas directly to electricity;
wherein a central controller is configured to control biogas compressors at each of the plurality of remote sources, to control the biogas feed compressor of the central processing facility, and to control the biomethane gas compressor, based on data including biogas availability at respective ones of the plurality of remote sources.