Greenlane Renewables Inc. has filed a patent application for a Linear Nitrogen Rejection Unit (NRU) as part of its Cascade LF product line, the company’s landfill gas upgrading technology which produces renewable natural gas (RNG).The Linear NRU lets the Cascade LF system recover more methane at less cost, the Burnaby, B.C.-based company said.“This patent filing marks another important milestone in our commitment to customer-focused innovation and relentless pursuit of improving the state-of-the-art of technology in our industry,” said Brad Douville, CEO of Greenlane.Douville said the innovation was a direct result of customer feedback. The company is now selling Cascade LF products that incorporate the Linear NRU, with the aim of having the first system delivered before the end of 2026.The Linear NRU technology is based on equilibrium pressure swing adsorption (PSA) principles. Conventional equilibrium PSA NRUs use multiple adsorption beds and internal recycling of recompressed gas.Greenlane’s innovation is a step-wise gas enrichment process that eliminates wasteful internal gas recycling while also using fewer and smaller adsorption beds. The result is lower operating and capital costs and higher methane recovery.For landfill gas containing increasingly higher levels of nitrogen, Greenlane’s modular product design employs additional adsorption beds plus compression in a staged configuration that preserves the linear approach and high methane recovery over the range. The best results are achieved when Cascade LF is paired with landfill wellfield monitoring and controls to maximize methane collection and minimize fugitive methane emissions and nitrogen levels in the landfill gas.“As landfill gas remains the largest and most technically challenging feedstock for RNG production, we continue to focus on developing solutions that make upgrading simpler, more reliable, and more cost-effective – all while increasing performance,” added Douville. “Our Linear NRU may also have applications beyond biogas.”Greenlane has been operating since 1986 and has installed more than 355 systems in 28 countries.  (ICE TORONTO)

Fonte notizia: https://wasterecyclingmag.ca/