Process for converting wax-containing hydrocarbon feedstocks into high-grade middle distillate products
US5730858A · kind A · utility
24Cited by
3References
1Claims
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Key dates
| Filing date | Mar 18, 1997 |
| Grant date | Mar 24, 1998 |
| Priority date | — |
| Expiry date | Mar 18, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G65/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The wax-containing hydrocarbon feedstocks are pre-treated by contacting them with a homogeneous solution containing 1-5 vol. % of an acid diluted in an alcohol/water mixture (preferably containing 60-90 vol. % alcohol). The pre-treated feedstock is then contacted, in the presence of hydrogen, with at least two catalysts in sequence and with no intermediate separation, comprising at least one hydrodewaxing catalyst and one hydrocracking catalyst, to recover high-grade middle distillates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.