What is the maximum allowable value for residual carbon/% in delayed coking feedstock?
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The residual carbon content in the feedstock for delayed coking in our company ranges up to 30%; the residual carbon level in normal vacuum residue is around 15%. We can use residue with a lower residual carbon content for blending, but we’re not sure what level would be appropriate.
This question can help you shift to the petrochemical sector, allowing for more discussions @GongGongWenWen
20% is fine, but it’s best not to exceed 22%
It mainly depends on whether the residue in the residue oil has high gum content or high asphaltenes; if the gum content is high, the residue value can be increased, while if the asphaltenes content is high, the residue value needs to be decreased