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Waste to Clean Energy in Robeson County

Waste to Clean Energy in Robeson County. Paul Grylls – GraniteFuel Engineering Cody Hunt – Hunt Environmental Harrell “Gene” Walters – Robeson County Landfill. April 5th, 2017. Field Evaluation Robeson County Landfill – Installation February 2016 Dual Vessel Regeneration. What is Siloxane?.

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Waste to Clean Energy in Robeson County

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  1. Waste to Clean Energy in Robeson County Paul Grylls – GraniteFuel Engineering Cody Hunt – Hunt Environmental Harrell “Gene” Walters – Robeson County Landfill April 5th, 2017

  2. Field EvaluationRobeson County Landfill – Installation February 2016Dual Vessel Regeneration

  3. What is Siloxane? Man-made organic compounds Frequently used in a range of personal hygiene products, food ingredients and industrial products. Added to increase ease of spreading, absorption, flexibility in plastics and heat resistance. Used as a low-cost oil substitution in various food ingredients such as salad dressings and potato chips. Anti foamingagentused in fast food, cheeseand beerproduction.

  4. Impacts of Siloxane on WTE Projects • Loss of Revenue • More Downtime • Loss of Power • IncreasedCost • Increased Maintenance • IncreasedRepair

  5. Impacts of Siloxane on WTE Projects Effects of extensive Siloxane damage to catalyst White Granular Ash Plugged Channels The catalyst was plugged after three days of running time.

  6. Design of SRT Media lifespan of over 10 years No annual downtimeor media changeover Minimal maintenance Minimal regeneration energy consumption

  7. Design of SRT

  8. Operation of SRT • Design Criteria • System automaticallyregenerateswithout shutting down or bypassing. • Regeneration intervalsbetween 24-72 hours • System canallowfutureexpansion • Regeneration airtobeventedthroughflare. • Greatlyimprovedmaintenanceschedules • Piston cleaningmostlyeliminated & pistonreplacementatmanufacturerrecommendedintervals • Si level in lubeoilnolongerdecisivefactor in lubeoilreplacement

  9. Operation of SRT

  10. Operation of SRT

  11. Operation of SRT

  12. Effects of SRTRobeson County Landfill – Oil Analyses With the installation of the SRT, the Si levels in the lube oil were no longer the deciding factor in requiring oil replacement.

  13. Effects of SRT No downtime caused by SRT Longer maintenance intervals Spark plugs look relatively clean during former change out period Engine parts much cleaner during de-coating

  14. Summary Siloxanes cause loss of production and increased maintenance and repair Regenerative Siloxane Removal Technology is cost effective solution over the long term • Beneficial ROI Dual vessel system continuously adsorbs siloxanes • Long media life 10+ years between exchanges Periodic regenerations keep the system active Silicon levels in oil dramatically reduced Engine parts observed to be much cleaner during regular maintenance

  15. Paul Grylls – GraniteFuel Engineering Cody Hunt – Hunt Environmental Harrell “Gene” Walters – Robeson County Landfill

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