Process and apparatus for recovering hydrocracked soft pitch
US10703992B2 · kind B2 · utility
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11References
14Claims
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Key dates
| Filing date | Dec 21, 2017 |
| Grant date | Jul 7, 2020 |
| Priority date | — |
| Expiry date | Dec 21, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2300/4081
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Settling unconverted pitch from a SHC reactor effluent before fractionation improves efficiency of fractionation of slurry hydrocracked products. The recycle of soft pitch to the SHC reactor results in improved reactor operation by avoiding the recycle of lighter products which vaporize in the reactor to occupy reactor space and the recycle of hard pitch which will not convert. The settling step facilitated by mixing with a solvent can achieve a separation between soft pitch and hard pitch not achievable in a fractionation column.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.