Residue treatment methods
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For the residue oil produced through atmospheric and vacuum distillation, isn’t the investment in residue oil hydrogenation units very high? What is the approximate investment for a plant with a capacity of 500,000 tons per year? Is solvent deasphalting a viable option? Isn’t this investment much less? Is there any expert who can explain this?
The treatment of residue involves two techniques: one is to subject the residue to hydrogenation before feeding it into a catalyst, and the other is to produce asphalt through solvent extraction and viscosity reduction. Another option is to feed the residue directly into a coker; however, the best approach is to extract the light components first before sending the residue to the coker, as this should yield better results. However, due to environmental concerns, there is a preference for using hydrogenation processes for treatment, but the investment required is much higher.
The more economical methods are solvent deasphalting and FCC. Deasphalted oil is sent to FCC, while deoiled asphalt is blended with road asphalt.
Could you explain the advantages of catalysis after leaching? Thank you! ! !
Given the current market conditions, it is more cost-effective to sell; the processing costs for heavy oil are generally high.
Direct distillation vacuum residue goes to solvent deasphalting; DAO goes to FCC; DOA is used for coking or to produce road asphalt – it’s a good approach.
Currently, the costs associated with processing heavy oil are very high. We all produce coke, and each factory has its own approach
If a 500,000-ton capacity unit for residue hydrogenation is established, it seems too small; the investment payback period would be unreasonable, and the hydrogen source also needs to be taken into consideration