Single-stage hydrotreating process

Details Single-stage hydrotreating process Single-stage hydrotreating process

C - Chemistry, Metallurgy

10

G

196/136

C10G 45/08 (2006.01) C10G 65/04 (2006.01)

Patent

CA 1272153

A B S T R A C T SINGLE-STAGE HYDROTREATING PROCESS A process for catalytically hydrotreating hydrocarbon oils having a tendency to deactivate hydrotreating catalysts by coke formation, in the presence of hydrogen at elevated temperature and pressure which comprises passing: a) oils having a final boiling point greater than 538 °C and containing less than 2 %w of heptane asphaltenes, b) oils having a final boiling point from 343 °C - 538 °C, or c) mixtures thereof, downwardly with a hydrogen-containing gas into a hydrotreating zone over a stacked-bed of hydrotreating catalysts under conditions suitable to convert more than 25% of the sulphur compounds present to H2S; wherein said stacked-bed comprises an upper zone containing 15-85 %v, basis total catalyst, of a hydrotreating catalyst comprising a component from Group VIB, a Group VIII metal, metal oxide or metal sulphide and a phosphorus compound and a lower zone containing 15-85 %v, basis total catalyst, of a hydrotreating catalyst comprising a component from Group VIB, a Group VIII metal, metal oxide or metal sulphide, and less than 0.5 %w phosphorus and separating the reaction product from said hydrotreating zone into a hydrogen-rich gas and a liquid hydrocarbon oil having reduced sulphur and/or heavy metal content.

488159

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