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Measuring Oil in Ammonia - OSS ClearShot Technology

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Measuring oil contamination in anhydrous ammonia can now be done quickly and accurately without the use of hazardous chemicals like hexane. OSS has developed a measurement system for oil contamination that allows small sample sizes and accurate results in minutes, saving your company time, money, and increasing safety for your employees. This green technology can be used in many applications, but this presentation demonstrates its use in ammonia as presented to the International Fertilizer Association, IFA.

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Measuring Oil in Ammonia - OSS ClearShot Technology

  1. 1. 1 Roland Sirois Orono Spectral Solutions, USA Safely, Quickly and Accurately Measuring Oil in Ammonia
  2. 2. 2 Summit Theme - SHE • Safety – reducing exposure to ammonia • Health – eliminating the use of a known extremely flammable, neurotoxin, n-Hexane. • Environment – no longer need to dispose of hazardous material Technology addresses all three areas of SHE principles
  3. 3. 3 Orono Spectral Solutions • Spinoff of University of Maine (US) Laboratory for Surface Science and Technology • Awarded 14 government projects ($8.6 M) • 2013 Tibbets Award & 2016 CF Safety Award Leading edge solid state surface technology driven organization
  4. 4. 4 Genesis of the Technology • Using solid state technology developed to test in any fluid system • Objectives - Speed, accuracy, safety and cost • Successes – Gulf of Mexico - Deep Water Horizon (BP) spill – Alberta Tar Sands – oil concentration Initial focus - a radical improvement to measuring oil in water
  5. 5. 5 Measuring oil in Ammonia • CF Industries looking for solutions to – Safely test oil contamination in ammonia – Quickly identify process control issues – Reduce corporate risk Request from a leading ammonia manufacturer led to application
  6. 6. 6 Materials Required to Measure Glassware, hot plate and dangerous chemicals
  7. 7. 7 Oil Determination – Process Evaporate Hexane Mass corresponds to concentration of extractable material Collect Large Sample Evaporate Ammonia Add Hexane Test Time: 8+ hours Tech Time: 3+ hours Current method is long, complex, dangerous and costly
  8. 8. 8 • Large sample size • Safety risk: carrying sample through the plant • Solvent (n-Hexane) & acid use • Complex process • Time consuming • One “shot” • Costly Issues with the Current Process Several factors with current method are driving development
  9. 9. 9 Materials Required to Measure No glassware, no chemicals, no heating
  10. 10. 10 New Process Summary Collect Small Sample Extract Sample Place in FTIR Time: < 20 minutes 0 .1 .2 .3 .4 .5 .6 .7 3050 3000 2950 2900 2850 2800 2750 Absorbance / Wavenumber (cm-1) Paged X-Zoom CURSOR File # 1 : BASELINE 11/5/2007 6:47 PM Res=8 disk 1 background after 10 ml ~30ppm oil in water Absorbance(a.u.) Wavenumber (cm-1) Simple, quick, accurate and less costly process address SHE
  11. 11. 11 FTIR Measurement A =- log10 = e l c l C, e Io I I Io Where: A = absorbance e = absorptivity l= pathlength c = concentration Infrared technology enables precise quantitative measurement Membrane
  12. 12. 12 Oil in Ammonia Output Oil absorbance at 2920 and height relates to concentration 0 .1 .2 .3 .4 .5 .6 .7 3050 3000 2950 2900 2850 2800 2750 Absorbance(a.u.) Wavenumber (cm-1)
  13. 13. 13 • Sample 10 mls for each test - triplicate • Place the extractor into the FTIR beam • Program provides operator with a ppm oil level • Permanent record of the results Summary of New Process Simple, accurate, safe and creates a permanent record 20 Min
  14. 14. 14 Measurement of Known Amount Spiking amount of mineral oil and measuring using technology Method Performance Summary Data Method Detection Limit 0.2 mg/L (ppm) Detection Range 0.2 – 20 mg/L (ppm) Precision at 3.5 mg/L 12%
  15. 15. 15 Benefits of the New Process Proven overwhelming advantages of new technology • Complicated • Fragile Glassware • 500+ mL Ammonia (1 sample) • Boiling Water, Hot Plate • Hexane, Hydrochloric Acid • 1-Day Turnaround Time • 3 Hours for Lab Technician • Hazardous Waste • Chemistry • Operating Cost • Simple • No Glassware • 30 mL Ammonia (3 samples) • No Heat Source Required • No Additional Chemicals • 20-Minute Turnaround Time • 20 Minutes for Lab Technician • Recyclable, Reusable Filters • EPA Green Chemistry • Operating Cost 25 – 30% less Old Method New Method
  16. 16. 16 • Oil in Water, UAN, Urea and Air • Development options – Water in ammonia 0.2 to 0.5% – Low water content < 30 ppm • Development for oil and gas industry • Aerospace System Opportunities Additional testing options for the technology
  17. 17. 17 Summary Sound science and proven SHE advantages • Safety – Significantly improve safety • Health – Eliminate hazardous chemical use • Environmental – No hazardous waste • Financial Impact – At lower operating cost and improves corporate sustainability
  18. 18. 18 End

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