Title:
【発明の名称】石油残渣または重油を精製し、かつこれより軽質なフラクションに転換するための石油残渣または重油の水素化処理方法
Document Type and Number:
Japanese Patent JP2984946
Kind Code:
B2
Abstract:
Process for hydrotreatment, in at least two stages, of a heavy hydrocarbon fraction containing asphaltenes, sulphur-containing impurities and metal impurities, in which: a) in at least one first stage (26,27) known as hydrodemetallation, the hydrocarbon feedstock and hydrogen are passed over a hydrodemetallation catalyst, b) in at least one subsequent so-called hydrodesulphurising stage (28,29) the product from stage a) and hydrogen are passed over a hydrodesulphurising catalyst. The invention in which the hydrodemetallation stage consists of one or more zones, each containing a hydrodemetallation catalyst operating as a stationary bed is characterised in that this or these zone(s) are preceded by two protective zones arranged in parallel (24,25) each containing a stationary bed of a hydrodemetallation catalyst, these two protecting zones operating alternately.
Inventors:
PIEERU RUNAARU
Application Number:
JP6594491A
Publication Date:
November 29, 1999
Filing Date:
March 29, 1991
Export Citation:
Assignee:
ANSUCHI* FURANSE DEYU PETOROORU
International Classes:
C10G45/04; C10G65/04; C10G65/16; C10G67/06; (IPC1-7): C10G65/04; C10G45/04; C10G65/16
Domestic Patent References:
| JP5757790A | ||||
| JP51128305A | ||||
| JP50117803A |
Attorney, Agent or Firm:
Eisuke Kishimoto (3 others)
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