1 / 16

DSI Options for MATS Compliance

DSI Options for MATS Compliance. Pat Mongoven ARIPPA Aug 2013. MATS Acid Gas Requirements. SO 2 < 0.2 lbs/MMBtu or HCl < 0.002 lbs/MMBtu. Can you meet MATS with just more stone?. If so – what will it cost? Stone Cost? Fuel Cost to Calcine?

kyrie
Download Presentation

DSI Options for MATS Compliance

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. DSI Options for MATS Compliance Pat Mongoven ARIPPA Aug 2013

  2. MATS Acid Gas Requirements SO2 < 0.2 lbs/MMBtu or HCl < 0.002 lbs/MMBtu Can you meet MATS with just more stone? If so – what will it cost? • Stone Cost? • Fuel Cost to Calcine? • Can you get the additional stone/fuelout of the bed fast enough? • O & M Costs (more handling, grinding, etc)? What other options do you have?

  3. CFB Boiler – General Schematic 110 MW’s Foster Wheeler Waste coal fuel Limestone in boiler with coal Tubular Airheater Baghouse for particulatecollection No FGD Injection locations Prior to Airheater Coal feeders - SO2 (FSI) Baghouse inlet - HCl (DSI) hydrate injection locations

  4. Furnace Sorbent Injection location For SO2 Capture Hydrate Feed Coal Feed

  5. Test Data 4/2013 SO2 lbs/MM Btu MATS Target Lbs/hr Hydrate

  6. 108 MW’s 1,500 lbs/hr hydrate 27,000 lbs/hr stone CFB Test Data 8/14/2013 FSI Started 0.35 lbs/MMBtu 0.15 lbs/MMBtu

  7. CFB Boiler – Burner Injection location For SO2 Capture Why does hydrate & stone work better than stone alone ?? Stone CaCO3 Lime CaO Gypsum CaSO4 + HEAT SO2

  8. CFB Boiler – Burner Injection location For SO2 Capture Why does hydrate & Stone work better than stone alone ?? Stone CaCO3 Lime CaO Gypsum CaSO4 + HEAT SO2 Lime CaO Lime CaO Lime CaO Lime CaO Lime CaO Lime CaO Lime CaO Lime CaO Lime CaO Lime CaO Gypsum CaSO4 Gypsum CaSO4 Gypsum CaSO4 Gypsum CaSO4 Gypsum CaSO4 Gypsum CaSO4 Gypsum CaSO4 Gypsum CaSO4 Gypsum CaSO4 Gypsum CaSO4 SO2 SO2 SO2 SO2 SO2 SO2 SO2 SO2 SO2 SO2 Stone CaCO3 Lime CaO + HEAT VERY high surface area CaO Hydrate Ca(OH)2 HEAT + VERY high surface area CaO

  9. CFB Boiler – Burner Injection location For SO2 Capture Why does hydrate & Stone work better than stone alone ?? Is a “Steel Curtain” Or Stone Enough ??

  10. CFB Boiler – Burner Injection location For SO2 Capture Why does hydrate & Stone work better than stone alone ??

  11. CFB Boiler - Baghouse Inlet injection location For HCl Capture Temperature ~ 3500 F Hydrate Feed

  12. HCl Control with Hydrated Lime • Reactivity (thermodynamic): • SO3 > SO2 > HF > HCl (thermodynamic) • Kinetic (collisions) are critical • Distribution in duct is key to good removal rates • In flight capture • Good coating on baghouse bags

  13. Full Scale CFB for HCl (2012 – just redone & awaiting lab results) (If you’d like an update when the lab work is completed, just leave me a business card)

  14. Hydrated Lime - Recommended System • Variable speed feed blower • Use Air-to-air heat exchanger for temperature control • Myrlen air sweeps on cone of weigh bin • Drop Through Rotary Valve • Hydrate: Air > 0.6 lbs hyd:lb air • Pickup velocity >3000 ft/min • Minimal bends; smooth unions • Piping/Lance diameter > 1.25” • Capital Costs ~ $1.5 - $2.0MM

  15. Waste Coal CFB Summary • Hydrated lime can achieve MATS compliance in EITHER HCl or SO2. • Removal of SO2 was better at the higher furnace temperatures - FSI • Removal of HCl was better at the lower temperature injection point (pre-bag house) - DSI • Hydrate did not have any negative effect on Bag House or fly ash. • Lowest cost MATS compliance – HCl or SO2 ?? Will be plant specific. • Mississippi Lime has a production facility in Weirton WV & we’d be happy to talk with ARIPPA members about future testing to better understand economics of hydrate feed for MATS compliance.

  16. Questions Questions – please stop by booth 14 Pat Mongoven Business Development Manager – FGT pgmongoven@mississippilime.com 314-378-0010 Mississippi Lime Company 3870 S. Lindbergh Blvd. Suite 200 St. Louis, MO 63127 www.mississippilime.com

More Related