Hydrocarbon Processing Applications Sulfur Compounds in Propylene (1 ppm)


Column: GS-GasPro 113-4332 30 m x 0.32 mm


Oven: 60°C for 2.5 minutes 60-250°C at 10°C/min


1


Injection: OI Analytical Volatiles Inlet Split ratio 5:1 200 µL gas sampling valve


Chromatogram courtesy of OI Analytical.


Detector: OI Analytical Model 5380 PFPD Sample: 1 ppm Sulfur compounds in Propylene


2 8 4 5 6 7 9 10 13 14 11 12 3


1. COS 2. H2S 3. Propylene 4. CS2 5. Methyl mercaptan 6. Ethyl mercaptan 7. Thiophene 8. Dimethyl sulfide 9. 2-Propanethiol 10. 1-Propanethiol 11. 2-Methyl-2-propanethiol 12. 2-Methyl-1-propanethiol 13. 1-Methyl-1-propnaethiol 14. 1-Butanethiol


2 46 8 10 Time (min) 12 14 16 18 GCPE020


Unleaded Gasoline


Column: DB-Petro 122-10A6 100 m x 0.25 mm, 0.50 µm


Carrier: Helium at 25.6 cm/sec Oven: 0°C for 15 min 0-50°C at 1°/min 50-130°C at 2°/min 130-180°C at 4°/min 180°C for 20 min


Injection: Split, 200°C Split ratio 1:300


Detector: FID, 250°C Nitrogen makeup gas at 30 mL/min


Sample: 1 µL of neat sample


1. Methane 2. n-Butane 3. Isopentane 4. n-Pentane 5. n-Hexane 6. Methylcyclopentane 7. Benzene 8. Cyclohexane 9. Isooctane 10. n-Heptane 11. Toluene * 12. 2,3,3-Trimethylpentane 13. 2-Methylheptane 14. 4-Methylheptane 15. n-Octane 16. Ethylbenzene 17. m-Xylene **


1 2 3 4 5 6 7 10 11, 12


16 17, 18


19 23 24, 25, 26


18. p-Xylene 19. o-Xylene 20. n-Nonane 21. Isopropylbenzene 22. Propylbenzene 23. 1,2,4-Trimethylbenzene 24. Isobutylbenzene 25. sec-Butylbenzene 26. n-Decane 27. 1,2,3-Trimethylbenzene 28. Butylbenzene 29. n-Undecane 30. 1,2,4,5-Tetramethylbenzene 31. Naphthalene 32. Dodecane 33. Tridecane


* Valley point with 12 = 78% ** Valley point with 18 = 87%


8 9 15 14 2021 130 min GCPE032 32 22 28 29 30


27 31 33


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