Combined process of low degree solvent deasphalting and delayed coking
US6673234B2 · kind B2 · utility
6Cited by
3References
16Claims
0Family size
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Key dates
| Filing date | Sep 25, 2001 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | Dec 5, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G55/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A combined process of low degree solvent deasphalting and delayed coking, which comprises feeding a deasphalting stock and a solvent into an extractor and making the yield of the deasphalted oil 70 wt %-95 wt %, and introducing a part or all of the deasphalted oil and optionally a conventional coking stock into a delayed coker. This process increases the yield of liquid products, removes the heavy asphaltene which is prone to coke, extends the run length of the delayed coker, and at the same time, lowers the content of impurities in coke, enlarges the sources of the stocks for producing the needle coke.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.