SYSTEMS AND METHODS OF RENEWABLE NATURAL GAS PROCESSING

1 . A gas recovery system, comprising:

a source gas conditioning assembly fluidly coupled to an inlet source gas, and configured to condition and compress the inlet source gas to provide a conditioned source gas;

a first membrane assembly fluidly coupled to the conditioned source gas, and configured to separate the conditioned source gas into a hydrocarbon enriched stream and a recovery stream;

a second membrane assembly fluidly coupled to the hydrocarbon enriched stream, and configured to separate the hydrocarbon enriched stream into a hydrocarbon product stream and a recycle stream;

a carbon dioxide (CO 2 ) plant assembly fluidly coupled to the recovery stream, and configured to provide a carbon dioxide product stream and an enriched recycle stream;

a standalone membrane assembly fluidly coupled to the enriched recycle stream, and configured to separate the enriched recycle stream into a hydrocarbon enriched recycle stream and an effluent stream; and

wherein the source gas conditioning assembly is fluidly coupled to the recycle stream and the hydrocarbon enriched recycle stream.

2 . The system of claim 1 , wherein the hydrocarbon enriched recycle stream comprises a retentate of a standalone membrane of the standalone membrane assembly.

3 . The system of claim 2 , wherein the source gas conditioning assembly comprises a first fluid coupling to the hydrocarbon enriched recycle stream and a second fluid coupling to the recycle stream, and wherein the first fluid coupling is downstream of the second fluid coupling.

4 . The system of claim 3 , wherein the first fluid coupling comprises a higher average pressure position than the second fluid coupling.

5 . The system of claim 3 , wherein the first fluid coupling is downstream of a compressor component of the source gas conditioning assembly.

6 . The system of claim 1 , wherein the recycle stream comprises a permeate of a second membrane of the second membrane assembly.

7 . The system of claim 1 , wherein the recovery stream comprises a permeate of a first membrane of the first membrane assembly.

8 . The system of claim 1 , wherein the enriched recycle stream comprises non-condensable gases from the CO 2 plant assembly.

9 . The system of claim 8 , wherein the enriched recycle stream passes directly from the CO 2 plant assembly to the standalone membrane assembly without being pressurized.

10 . The system of claim 1 , wherein the CO 2 plant assembly comprises:

a carbon adsorption bed;

a gas compression component;

a gas dehydration component; and

a liquefaction component.

11 . An apparatus, comprising:

a standalone membrane assembly configured to:

receive a treated waste gas stream, the treated waste gas stream comprising a purge stream of a CO 2 plant;

separate the treated waste gas stream into a hydrocarbon enriched stream and an effluent stream; and

provide the hydrocarbon enriched stream to a waste gas recovery facility, wherein the hydrocarbon enriched stream is recycled to a position upstream of the CO 2 plant.

12 . The apparatus of claim 11 , wherein the hydrocarbon enriched stream comprises a retentate stream of a standalone membrane of the standalone membrane assembly.

13 .- 45 . (canceled)

46 . A gas recovery system, comprising:

a source gas conditioning assembly fluidly coupled to an inlet source gas, and configured to condition and compress the inlet source gas to provide a conditioned source gas;

a first membrane assembly fluidly coupled to the conditioned source gas, and configured to separate the conditioned source gas into a hydrocarbon enriched stream and a recycle stream;

a second membrane assembly fluidly coupled to the hydrocarbon enriched stream, and configured to separate the hydrocarbon enriched stream into a hydrocarbon product stream and a recovery stream;

a carbon dioxide (CO 2 ) plant assembly fluidly coupled to the recovery stream, and configured to provide a carbon dioxide product stream and an enriched recycle stream;

a standalone membrane assembly fluidly coupled to the enriched recycle stream, and configured to separate the enriched recycle stream into a hydrocarbon enriched recycle stream and an effluent stream; and

wherein the source gas conditioning assembly is fluidly coupled to the recycle stream and the hydrocarbon enriched recycle stream.

47 . The system of claim 46 , wherein the hydrocarbon enriched recycle stream comprises a retentate of a standalone membrane of the standalone membrane assembly.

48 . The system of claim 47 , wherein the source gas conditioning assembly comprises a first fluid coupling to the hydrocarbon enriched recycle stream and a second fluid coupling to the recycle stream, and wherein the first fluid coupling is downstream of the second fluid coupling.

49 . The system of claim 48 , wherein the first fluid coupling comprises a higher average pressure position than the second fluid coupling.

50 . The system of claim 48 , wherein the first fluid coupling is downstream of a compressor component of the source gas conditioning assembly.

51 . The system of claim 46 , wherein the recycle stream comprises a permeate of a first membrane of the first membrane assembly.

52 . The system of claim 46 , wherein the recovery stream comprises a permeate of a first membrane of the second membrane assembly.

53 . The system of claim 46 , wherein the enriched recycle stream comprises non-condensable gases from the CO 2 plant assembly.

54 . The system of claim 53 , wherein the enriched recycle stream passes directly from the CO 2 plant assembly to the standalone membrane assembly without being pressurized.

55 . The system of claim 46 , wherein the CO 2 plant assembly comprises:

a carbon adsorption bed;

a gas compression component;

a gas dehydration component; and

a liquefaction component.