Hydroconversion process with combined temperature and feed staging
Patent
·
OSTI ID:6542218
This patent describes a slurry hydroconversion process, for converting a heavy hydrocarbonaceous oil to lower boiling products, which process takes place in at least two zones, the process comprising the steps of: (a) adding a catalyst or a catalyst precursor to a chargestock comprising a first portion of fresh heavy hydrocarbonaceous oil to form a mixture, which hydrocarbonaceous oil contains materials boiling above about 1050F; (b) reacting the resulting mixture with a hydrogen-containing gas in a first hydroconversion zone at first hydroconversion conditions comprising a temperature range from about 780F to about 900F, and a hydrogen partial pressure from about 50 to about 5,000 psig, to produce a first hydroconverted oil which has a lower boiling range than the hydrocarbonaceous chargestock; (c) introducing at least a portion of the effluent of the first hydroconversion zone, including at least a portion of the first hydroconverted oil into a second hydroconversion zone at second hydroconversion conditions comprising the range of conditions of the first hydroconversion zone but with the proviso that the temperature of the second hydroconversion zone be at least about 10F higher than the first hydroconversion zone, to react with a hydrogen containing gas and produce a second hydroconverted oil which has a boiling range lower than the first hydroconverted oil, the improvement which comprises: (d) introducing a second portion of the fresh heavy hydrocarbonaceous oil to the second hydroconversion zone.
- Assignee:
- Exxon Research and Engineering Co., Florham Park, NJ
- Patent Number(s):
- US 4762607
- OSTI ID:
- 6542218
- Country of Publication:
- United States
- Language:
- English
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