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Membrane Technology - Biocycle West Coast 2013

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Membrane Technology - Biocycle West Coast 2013

  1. 1. Biogas Upgrading to Renewable Natural Gas(RNG)Biocycle West Coast Conference 2013Thomas Gratz, Regional Sales Manager www.eisenmann.com www.eisenmann.us.com © Eisenmann AG 2013 © Eisenmann 2013
  2. 2. Agenda 1 Biomethane Incentives 2 Membrane Technology for Gas Upgrading 3 Case Study: Gas Upgrading 4 Membrane Technology and Anaerobic Digestion Integration 5 US Application 6 About Eisenmann 7 Conclusions and Questions 2
  3. 3. Agenda 1 Biomethane Incentives 2 Membrane Technology for Gas Upgrading 3 Case Study: Gas Upgrading 4 Membrane Technology and Anaerobic Digestion Integration 5 US Application 6 About Eisenmann 7 Conclusions and Questions 3
  4. 4. DriversMost biogas systems use CHP to generate electricity and heat  The thermal energy cannot always be utilizedIncentives to use biogas as biomethane or CNG for transportation fuel  More than 250,000 natural gas vehicles in the US (source: GE)  12-15% public transit buses in US use CNG (source: CNG Now)  A natural gas powered bus can displace 1,400 gallons of diesel fuel a year (source: CNG Now)  Natural gas vehicles reduce greenhouse gas emissions between 20-29% (source: Natural Gas Vehicle Association) 4
  5. 5. Advantages of Biomethane Decentralized production Independent, flexible and storable energy source Efficient use according to requirements Storage capability for when demand is higher Offsets non-renewable sources (coal, oil, fossil fuel derived natural gas) Production creates US jobs and benefits local economies 5
  6. 6. Agenda 1 Biomethane Incentives 2 Membrane Technology for Gas Upgrading 3 Case Study: Gas Upgrading 4 Membrane Technology and Anaerobic Digestion Integration 5 US Application 6 About Eisenmann 7 Conclusions and Questions 6
  7. 7. Highly Selective Membrane Technology Offgas Biomethane CO2 CH4 Biogas CH4 + CO2 Membrane Function 7
  8. 8. Flow diagram biogas cooling desulfurization compressor and drying temperature particle filter control filter control membrane membrane biomethane stage I stage II > 98% CH4 biogas production pre-treatment membrane offgas CO2 compression stage III < 0.5% CH4 purification gas separation purified gas offgas treatment 0.0% CH4 8
  9. 9. Advantages of Upgrading with Membrane TechnologyBiogas upgrading with selective and permeablemembranes offers advantages over other technologies Minimized gas recirculation rates Lower operating costs Low capital expenditure Compact modular design Rapid system start-up Easier system control Low methane leakage High energy efficiency No need for additional chemicals or water Injection into the natural gas grid without further compression 9
  10. 10. Agenda 1 Biomethane Incentives 2 Membrane Technology for Gas Upgrading 3 Case Study: Gas Upgrading 4 Membrane Technology and Anaerobic Digestion Integration 5 US Application 6 About Eisenmann 7 Conclusions and Questions 10
  11. 11. Case Study: Membrane TechnologyProject: Biogas Plant in SwitzerlandLimited success with previous biogas upgrading technologyInstalled Membrane Upgrading System in 2012Gas is used to fuel city buses 11
  12. 12. Site 12
  13. 13. Facts and FiguresBiogas plant: Volume flow biogas: 123 CFM Volume flow biomethane: 73 CFMhigh solids digestion of biowaste Concentration biomethane: > 96 vol.-%Utilization:grid injection and fuelfor public transportation fleetMembrane room Biogas upgrading plant 13
  14. 14. Measurement DataSuccessful test operation in December 2012Grid injection since January 26, 2013 concentration [vol.-%] concentration [vol.- concentration biomethane [vol.-%] concentration methane [vol.-%] concentration CO2 [vol.-%] concentration CO2 [vol.-%] %] Dec 3 Dec 4 Dec 5 Dec 6 Dec 7 Dec 3 Dec 4 Dec 5 Dec 6 Dec 7 2012 2012Biomethane to grid injection: methane > 96 % Offgas to atmosphere: methane leakage < 1.0 % 14
  15. 15. Operating DataSpecific energy consumption without peripheralsCompressor duty0.20 kWh/Nm³ biogasSpecific energy consumption with peripheralsCompressor dutyBlower, cooling and air conditioning0.29 kWh/Nm³ biogasOperationFast start-up and shut-downGood adjustabilityNo heat requirementNo operational supplementsEasy handling 15
  16. 16. Agenda 1 Biomethane Incentives 2 Membrane Technology for Gas Upgrading 3 Case Study: Gas Upgrading 4 Membrane Technology and Anaerobic Digestion Integration 5 US Application 6 About Eisenmann 7 Conclusions and Questions 16
  17. 17. Anaerobic Digestion and Biogas UpgradingTotal process chain from a single source. Plug flow digester CHP / biogas upgrading 17
  18. 18. ContainerCompact and modular design. Turn-key solution. 33 ft 10 ft 18
  19. 19. Pre-treatmentRequirements for grid injection concerning pollutant gas components and dew point reached. Heat exchangers Blower Activated carbon filters Cooling, condensation Pre-compression, drying Fine desulfurization T = 41°F p = 17.4 PSI, T = 86°F H2S < 10 ppm 19
  20. 20. CompressionEnsuring the required pressure difference for gas separation.Oil injected screw compressor Stable operation No pulsation Waste heat from engine used for container air conditioning Internal heat recovery Oil deposition Heat utilization for temperature controlp = 232 PSI and T = 131°F Detail oil circulation Construction compressor 20
  21. 21. PurificationFine purification in order to ensure a long lifetime of the membranes.Heat exchangers Control filter Particle filterTemperature control Activated carbon for fine cleaning ISO-filter for fine particulate matterT = 77 - 86°F Pollutant gas, oil Particles, aerosols (ISO 8573-1) 21
  22. 22. Gas separation with highly selective membranesSmall recirculation rate minimizing compressor dutyHigh selectivity facilitating a methane yield greater than 99.5%. compressor membrane membrane biomethane stage I stage II > 98% CH4 vacuum membrane offgas CO2 stage III < 0.5% CH4Two-staged upgrading to biomethane Third membrane stage to minimize methane leak 22
  23. 23. Process Control and VisualizationAutomated operation and process controlWalk-in switch cabinetProcess control Siemens S7Remote access Monitoring and operation through internet access Failure report notification via mobile phoneVisualization Touch-screen Biogas upgrading visualization 23
  24. 24. Agenda 1 Biomethane Incentives 2 Membrane Technology for Gas Upgrading 3 Case Study: Gas Upgrading 4 Membrane Technology and Anaerobic Digestion Integration 5 US Application 6 About Eisenmann 7 Conclusions and Questions 24
  25. 25. Business Study: Waste Collection VehiclesFuel costs for waste collection fleets are negatively impacted by Low miles per gallon Long service routes Increasing age of the fleetsCurrent Situation – 179,000 waste collection vehicles in America 91% are diesel-fuel 40% are over 10 years old Average 25,000 miles driven annuallyFuel Costs Average 3 miles to the gallon 8,600 gallons of fuel use on average per truck per year For a fleet of 100 trucks, the average annual fuel costs would be $3.44 Million (assuming $4/gallon cost of diesel) 25
  26. 26. Business Study: Waste Collection VehiclesBenefits of switching a fleet to natural gas Cleaner alternative fuel Significant cost savings At $2/gallon of CNG, on 100 truck fleet: daily savings is $4,800, annual savings is $1.75 M ROI: Just over a year with annual fuel savings (based on average cost of converting diesel engines) Cleaner, less noisy truck Non-corrosive, non-carcinogenic fuel is not a threat to soil, surface water or ground water Up to 90% less air pollution than diesel fuel 26
  27. 27. Business Study: Waste Collection VehiclesExample: Waste Management displaces 8 million gallons of petroleum and eliminates over45,000 metric tons of greenhouse gas emissions in just one year by operating 1,400 naturalgas trucks. 27
  28. 28. Business Study: Waste Collection Vehicles Assumptions: Diesel - $4 / gallon CNG - $2 / gallon Feed Rate of Biogas System 100 tons/day @ 350 days/yr Methane Production 540,933 SCF (CH4)/day Methane (HHV) 1,000 BTU/SCF Upgrading Slip (Loss) 1% Energy potential of upgraded RNG 535 MM BTU/day Equivalent Diesel Production 3938 DGE/day Trucks Fueled by System 164 Trucks per day Potential Fuel Savings (240 days collection) $ 2,873,000.-/year 28
  29. 29. Agenda 1 Biomethane Incentives 2 Membrane Technology for Gas Upgrading 3 Case Study: Gas Upgrading 4 Membrane Technology and Anaerobic Digestion Integration 5 US Application 6 About Eisenmann 7 Conclusions and Questions 29
  30. 30. Leading International Supplier  Environmental technology  General finishing  Material handling & conveyor systems  Process and high-temperature technology1 30
  31. 31. Offerings  Green, sustainable engineering  Top quality and reliability  Modular and custom solutions  Detailed system and process solutions  Dedicated industrial service team  Worldwide reference installations  Global services2 31
  32. 32. Facts and Figures  Established 1951; Stuttgart, Germany  12 locations worldwide  US location since late 70‘s; Crystal Lake, IL  3,600 employees  More than 90 biogas facilities Founding Member3 32
  33. 33. Eisenmann BiogasSince 2003 Since 2008 Since 2012Agricultural Biogas Systems Green Waste Biogas Systems Biogas-Upgrading Systems Germany, 55 in operation  Sweden, 1 in operation Switzerland, 1 in operation Italy, 28 in operation  Switzerland, 3 in operation Czech Rep., 1 in operation  Poland, 1 under construction  USA, 1 under construction 33
  34. 34. Agenda 1 Biomethane Incentives 2 Membrane Technology for Gas Upgrading 3 Case Study: Gas Upgrading 4 Membrane Technology and Anaerobic Digestion Integration 5 US Application 6 About Eisenmann 7 Conclusions and Questions 34
  35. 35. Conclusions There is a rising demand for biomethane to be used as CNG, especially as transportation fuel The use of biomethane has many advantages including being a lower cost and clean, alternative fuel Biomethane can be upgraded to pipeline grade natural gas by using highly selective and permeable membranes By using membrane technology, there is less methane slip 35
  36. 36. Questions Green EngineeringSustainability is in Our System 36
  37. 37. New WebsiteIntroducing Eisenmann’s New Websitewww.eisenmann.us.com/biocyclewc13Available for download: Today’s presentation CNG to Fuel your Fleet (white paper) Sustainability in an Urban Environment (white paper) 37
  38. 38. ContactThomas GratzRegional Sales ManagerPhone: (815) 477-8884E-Mail: thomas.gratz@eisenmann.com150 East Dartmoor Dr. Crystal Lake, IL 60014www.eisenmann.us.comFollow Us: Eisenmann Corporation Eisenmann Corporation @EISENMANNUSA 38

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