DESL Experience-MSW WTE Conversion Technologies


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DESL Experience-MSW WTE Conversion Technologies

  1. 1. DESL Experience-MSW WTEConversion Technologies Presented at ‘Asia Energy Security Summit’ organised by IPPAI , India Bangkok, March 01, 2013Dr G C Datta RoyCEO, Development Environergy Services Limited (DESL)New Delhi
  2. 2. Presentation Outline DESL in Waste-to-Energy Critical technology issues DESL experience Key learning & conclusions 2
  3. 3. DESL & Alternate EnergyEnabled energy Designed andsaving of approx Due Diligence Engineered Designed and 400,000 LPD 200 MW in & Project over 500 MW engineered solar water commercial development buildings, of biomass 22 MW solid heating in for 250 MW industries and based power waste to industrial of municipal plants and energy plant processes hydropower facilities cogeneration 3 million tons of GHG emissions off-set 3 Introducing DESL
  4. 4. DESL MSW WTE Project portfolio Projects Commissioned • 16 MW Incineration based, Continuous operation since Feb, 2012 -Delhi Project under Commissioning • 10 MW pyrolysis/reformation based, currently one module operating-Pune Project under installation • 12 MW RDF based-Delhi Feasibility Study • 5 MW Biomethanation based-Jamshedpur
  5. 5. Key Technology Issues MSW Charaterisation • Physical • Thermal • Chemical Fuel preparation technologies Conversion technologies • Biomethanation • Combustion • Gasification 5
  6. 6. Physical & Thermal Characteristics MSW Characterization 4500 100 GCV (kCal/kg) 4000 90 3500 80 VM, FC, TM & AC (%) 70 3000 60 2500 50 2000 40 1500 30 1000 20 500 10 0 0 GCV on as Received Basis Volatile Matter (VM) Fixed Carbon (FC) Total Moisture (TM) Ash Content (AC) Extremely wide variation-reasons for failure of many WTE plants in India 6
  7. 7. Moisture Content Wide Variation-Zonal & Seasonal 7
  8. 8. Technology-MSW Quality ComplianceTechnology Compatibility Restrictive/HarmfulBiomethanation Food wastes, green Non-paper fibres, wastes, excrements, plastics, metals, glass, paper, higher CN ratio inertsPyrolysis, gasification All fibres, Metals extremely moisture<15%, harmful, inerts consistencyRDF All fibres, low moistures Plastics particularly PVC, inertsIncineration Flexible PVC, inerts PVC, moisture & inerts are the common problems-need for preparatory technology; simple for incineration to highly sophisticated for gasification 8
  9. 9. Preparatory Devices-Fundamentals Size reduction Receipt & handling Manual removal-recyclable Screening Density separation Pre & post drying Metal removal Inert reduction Primary Shredder Removing metals Trommel Ballistic separator Secondary Shredder 9 Cost ratio for different systems has been as high as 1:10
  10. 10. Drying Hot Air Generator Dryer Finished RDF Preparatory need different for different conversion technologies RDF, a commercial fuel for many applications (Boilers, Kilns, pellets)03/04/2013 10
  11. 11. Biomethanation MSW Pre-processing (Separation of non-biodegradable) Add water Shredding & crushing Add water Slurry preparation Digester Dewatering Heater Compost Gas gin En e G Lowest specific cost, garbage management practices, compost market, segregation, land requirement 11
  12. 12. ArrowBio Biomethanation Project-Tel Aviv Processing capacity-70000 TPA (250 TPD) Electricity output-630 KW Electricity export-370 KW 12
  13. 13. Incineration Storage, handling, homogenization & feeding crane High capacity grab bucket Remote operation of grab crane Furnace monitoring for feed control Minimum investment on fuel preparation, most flexible, proven technology, 13 high cost of incinerator, higher chances of harmful pollution
  14. 14. New Technology-Gasification 2 7 14 Heater Gas Clean 3 6 8 Up 11 GE Syngas GMedia Reformer 9 Steam MSW Hot gas WHR HAG 4 5 12 15 Pyrolyser RDF MSW Pre-processing 13 Char Comb 17 16 1 ustor Inert, Recyclable, Lichette 10 14
  15. 15. Technology Evaluation-Gasification Overall cycle efficiency of upto 2 times of other technologies, 3 commercial plants (USA, Japan & India), high end technology 15
  16. 16. India Gasification Plant under Commissioning MSW preparatory system DryerDry RDF conveyor Fuel silo Gasifier Flare tower Engine generator 16
  17. 17. Emerging Technologies High temperature pyrolysis/cracking Micro digesters/home systems 17
  18. 18. DESL Learning & Conclusions Parameters RDF Biometh Incinera Gasifica Remarks anation tion tion Output- 1100 175 1300 1600 Internal consumption high in KW/100 TPD* RDF CV of plastics not counted Technology Matured Matured Matured Developi BM technology yet to find status as fuel ng success in India-garbage quality Land need Medium High Low Low Need for land for fuel preparatory low in incineration Low for power block in gasification Investment High Lowest Medium High Even at higher level, cost in cost India is less than half/one third global benchmark Environmental Medium Medium High Low High risk perception for concerns incineration technology*Garbage GCV of 1500 kCal/Kg DESL believes that all the technologies would have their applications depending upon garbage quantity & quality, land availability & societal willingness to pay for the services 18
  19. 19. Thank YouG C Datta RoyChief Executive OfficerDevelopment Environergy Services Limited(Formerly Dalkia Energy Services Ltd)# 819, 8th Floor, Antriksh Bhawan22, Kasturba Gandhi Marg, New Delhi - 110001Tel-+91 11 4079 1107 Fax-+91 11 4079 1101Mob-+91 95829 19