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Overview of typical heteroatom specifications for fossil-based steam cracker feedstocks.
| Contaminant | Industrial limit | Reference |
|---|---|---|
| Nitrogen | Naphtha: 100 ppm Gas oils: 2000 ppm |
(Baumgartner et al., 2004) |
| Sulfur | 500 ppm | (Baumgartner et al., 2004) |
| Oxygen | 100 ppm | (Baumgartner et al., 2004) |
| Chlorine | 3 ppm | (Baumgartner et al., 2004, Sundaram and Stancato, 2018, Alanazi et al., 2017) |
| Phosphorus | 0.5 ppm | (Baumgartner et al., 2004) |
