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Ts Pws Biogasupgrading Bremen 2010 V1

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The best utilisation of biogas is upgrading to natural gas quality. The best way to do this is with pressurized water scrubbing. This presentation shows 4 innovations in the field of biogas upgrading with the PWS system, making it the ultimate upgrading technology. (presented at Bremen, waste to energy fair).

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Ts Pws Biogasupgrading Bremen 2010 V1

  1. 1. “ Making pressurized water scrubbing the ultimate biogas upgrading technology with the DMT TS-PWS ® system” R. Lems M.Sc. , R&D Manager DMT Environmental Technology
  2. 2. Why biogas upgrading? Gas treatment (desulphurisation) Gas Treatment (upgrading) Green gas (CBG: Compressed BioGas) Mobility Power 40% Biogas Heat 60% CHP Natural gas grid Digester
  3. 3. Biogas as Vehicle Fuel
  4. 4. Why upgrading Biogas? Substance % Methane, CH 4 45-75 Carbon dioxide, CO 2 25-45 Carbon monoxide, CO 0-0,3 Nitrogen, N 2 1-15 Water, H 2 O Saturated Hydrogen sulfide, H 2 S 0,1-0,5 Oxygen, O 2 Siloxane, R 2 SiO traces
  5. 5. Choice for large-scale? <ul><li>PSA: Pressure Swing Absorption </li></ul><ul><li>- complex/ high operational costs </li></ul><ul><li>+ N 2 removal </li></ul><ul><li>CA: Catalytic absorption </li></ul><ul><li>- chemicals and heat needed </li></ul><ul><li>+ very low methane slip (if no CHP is used for heat) </li></ul><ul><li>MS: Membrane Separation </li></ul><ul><li>- High methane loss (10-20%) </li></ul><ul><li>+ simple system </li></ul><ul><li>CL: Cryogenic liquefaction. </li></ul><ul><li>- complex/ expensive/ no proven technology/ low energy efficiency </li></ul><ul><li>+ liquid CO 2 </li></ul><ul><li>PWS: Pressurized Water Scrubbing </li></ul><ul><li>- high towers </li></ul><ul><li>+ No chemicals, simple system, high energy efficiency </li></ul>
  6. 6. Choice for Full-scale? ISET 09-09-2009
  7. 7. Choice for Full-scale? ISET 09-09-2009
  8. 8. Choice for Full-scale? <ul><li>PWS: Pressurized Water Scrubbing </li></ul><ul><ul><li>High energy efficiency </li></ul></ul><ul><ul><li>Low operational cost </li></ul></ul><ul><ul><li>Low methane slip (but still oxidisable) </li></ul></ul><ul><ul><li>Robust system </li></ul></ul><ul><ul><li>Most flexible system </li></ul></ul><ul><ul><li>No chemicals </li></ul></ul>
  9. 9. Flash vessel Pump Compressor H 2 S removal Absorber Stripper Air blower Dryer Chiller 4 Innovative improvements
  10. 10. <ul><li>Sterilization biogas at compressor (160 º C) </li></ul><ul><li>UV disinfection circulation water </li></ul><ul><li>Dehydration Dryer unit </li></ul><ul><li>Hepa filter Last defence </li></ul>Bacteria barriers. Bacteria defense system DMT-TS-PWS ®
  11. 11. H 2 S + O 2 => H 2 SO 4 T=30C pH= 0.5-1.5 Biological desulphurization DMT-TS-PWS ® No Chemical use!
  12. 12. Power 15kWe cooling 52.5 kWq Heat 67.5 kWq Heat Pump technology Chiller DMT-TS-PWS ® Heat pump power
  13. 13. CO 2 Recovery DMT-TS-PWS ® -25 to -30C and 12-15 bar Food grade:>99.99% pure
  14. 14. <ul><li>Quadruple integrated Bacterial barrier. </li></ul><ul><li>Desulphurization without chemical consumption </li></ul><ul><li>>100% energy efficiency </li></ul><ul><li>Eliminating CO 2 emmisions </li></ul>“ Making pressurized water scrubbing the ultimate biogas upgrading technology
  15. 15. Plant Examples
  16. 17. Utilisation of Biogas
  17. 18. “ Making pressurized water scrubbing the ultimate biogas upgrading technology with the DMT TS-PWS® system” R. Lems M.Sc. , R&D Manager DMT Environmental Technology: RLems@dmt-et.nl
  18. 22. 550Nm 3 /hr biogas 65% CH 4
  19. 23. Direct catalytic regenerative oxidation 99.9% removal of CH 4 + H 2 S Heat recovery from the CH 4 CH 4 emision control DMT-TS-PWS ®
  20. 24. Plant examples

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