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consists in removing sulfur from the gas stream by using two vertical static carbon towers to scrub hydrogen sulfide . From there , the gas is chilled to remove moisture , before being pressurized as polymeric membranes separate carbon dioxide from the balance of the gas . Subsequently , nitrogen is eliminated using a pressure swing adsorption system while the gas flows through a series of vessels that are alternately pressurized and rapidly depressurized . The resulting gas , comprising only methane and oxygen , is recompressed and passed through a deoxygenating process . Once oxygen-free , the gas is dried to meet moisture requirements and injected into the local gas distribution network . This network serves customers in North America who are connected to the natural gas distribution grid ,” he enlightens .
Paving the way
Reflecting on the impact of the RNG plant at Walker ’ s site , Graham shares his thoughts on what other businesses should rethink to tackle the energy transition . “ There has been considerable hype surrounding hydrogen in the energy sector , but the reality is that this technology is still years , if not decades , away from impactful widespread deployment . While the industry works towards solving the challenges posed by hydrogen , the RNG market offers valuable insights . It can be used as a roadmap for technology readiness , market development , regulatory framework ,
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