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US 2013/0240407 A1Published application
Integration of solvent deasphalting with resin hydroprocessing and with delayed coking
AssigneeFoster Wheeler USA Corporation
InventorDaniel B. Gillis
Life of this patent
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Abstract
The invention is directed to a process that combines the solvent deasphalting with resin hydrotreatment and coupled with delayed coking so as to reduce the costs associated with performing each of the steps separately. The integrated process of the invention permits higher product yields coupled with lower energy and transportation costs.
Claims21
A process for deasphalting a solvent comprising:
- introducing a hydrocarbon oil feedstock to a reactor;
- introducing a solvent to the feedstock;
- separating an asphaltene-containing fraction from the feedstock to form an asphaltene depleted feedstock;
- separating a resin-containing fraction in a resin recovery section from the asphaltene separated feedstock to form a resin depleted feedstock;
- separating a deasphalted oil-containing fraction from the resin depleted feedstock;
- integrating the resin recovery section with a hydroprocessing process;
- hydroprocessing the resin-containing fraction in the hydroprocessing process to generate a hydroprocessed residue product;
- and
- processing the hydroprocessed residue product in a delayed coker
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A method for integrating a solvent deasphalting process and a resin selection process comprising:
- adding a solvent to a heavy hydrocarbon stream comprising asphaltenes, resin, and oil;
- removing the asphaltenes from the heavy hydrocarbon stream so as to produce a substantially solvent-free asphaltene stream and a substantially asphaltene-free solvent solution comprising the solvent, the resin, and the oil;
- heating the solvent solution so as to precipitate the resin;
- separating the resin from the solvent solution, producing a resin product and a mixture comprising the oil and the solvent;
- applying heat to the mixture so as to vaporize a fraction of the solvent;
- removing the vaporized solvent fraction from the mixture leaving a resin-free deasphalted oil product;
- subject the resin product to thermal cracking so as to produce a residue product;
- and
- subjecting the residue product to processing in a delayed coker.
6 more elements
Dependencies are inferred from the claim text.