Integrated desolidification for solid-containing residues
AssigneeKellogg Brown & Root LLC
InventorsCassandra Schoessow, Douglas Piotter, Anand Subramanian
Life of this patent
Estimating the term…
Abstract
A desolidification process enables the isolation and extraction of solid additives from an unreacted petroleum residue stream. In a hydrocracking process that mixes a solid additive with a petroleum residue feedstock to convert the petroleum residue to higher-value distillates, the desolidification process enables the recovery of the unreacted petroleum residue for conversion to a saleable product. The desolidification process involves the mixture of one or more solvents with a slurry in which solids are integrated in the petroleum residue to generate a mixture having a decreased density and viscosity as compared to the slurry, which facilitates removal of the solids.
Claims19
A system comprising:
- a mix drum comprising a desolidification feed stream and a mix drum effluent stream;
- a solid separation drum configured to receive the mix drum effluent stream of the mix drum and comprising a solid separation drum effluent liquid stream;
- a level controller configured to regulate a removal rate of solids from the solid separation drum to maintain a solid-liquid interface level in the separation drum;
- and
- a vacuum feed drum configured to receive the solid separation drum effluent liquid stream from the solid separation drum, the vacuum feed drum comprising a vacuum feed drum effluent stream directed to a vacuum tower,
- wherein, the vacuum tower comprises a vacuum tower effluent stream, and wherein the desolidification feed stream comprises the vacuum tower effluent stream.
A system comprising:
- a first mix drum comprising a desolidifcation feed stream and a first mix drum effluent stream;
- a first solid separation drum configured to receive the first mix drum effluent stream and comprising a first solid separation drum effluent liquid stream;
- a second mix drum located downstream from and in flow communication with the first solid separation drum, the second mix drum comprising a second mix drum effluent stream;
- a second solid separation drum configured to receive the second mix drum effluent stream and comprising a second solid separation drum effluent liquid stream;
- and
- a vacuum feed drum configured to receive the second solid separation drum effluent liquid stream, the vacuum feed drum comprising a vacuum feed drum effluent stream directed to a vacuum tower,
- wherein, the vacuum tower comprises a vacuum tower effluent stream, and wherein the desolidification feed stream comprises at least a first portion of the vacuum tower effluent stream, and
- wherein the second mix drum is further configured to receive at least a second portion of the vacuum tower effluent stream as a combined feed with the first solid separation drum effluent liquid stream.
Dependencies are inferred from the claim text.