Hydrodesulfurization with caked catalyst removal
This patent describes a process for hydrosulfurization of heavy oil containing metal contaminants. It comprises contacting the heavy oil feed with hydrogen and catalyst particles comprising Group VI or Group VIII or both metals and an inorganic oxide refractory support at hydrodesulfurization conditions including an elevated temperature and pressure, the catalyst being disposed in a reactor vessel in a series of two- or more fixed catalyst beds, which beds are supported by support means extending across a substantially horizontal plane in the reactor, and wherein after a period of at least 100 hours of on-stream time the catalyst particles become caked together; periodically removing the catalyst from the reactor by a method comprising hydro drilling a central opening through the catalyst beds along an axis extending vertically along the length of the reactor vessel, hydro cutting the catalyst beds into catalyst chunks and particles, and passing the catalyst chunks and particles out through an opening in the lower part of the reactor and into spent catalyst receiving means; and recharging fresh catalyst to the reactor vessel.
- Assignee:
- Chevron Research Co., San Francisco, CA (United States)
- Patent Number(s):
- US 5028314; A
- Application Number:
- PPN: US 7-16806
- OSTI ID:
- 5789334
- Resource Relation:
- Patent File Date: 20 Feb 1987
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
HYDROCARBONS
HYDROCRACKING
PETROLEUM
VISCOSITY
PETROLEUM PRODUCTS
DESULFURIZATION
CATALYST SUPPORTS
CATALYTIC CRACKING
CHEMICAL REACTION KINETICS
HIGH PRESSURE
HYDROGENATION
PETROLEUM REFINERIES
TEMPERATURE RANGE 0400-1000 K
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
ENERGY SOURCES
FOSSIL FUELS
FUELS
INDUSTRIAL PLANTS
KINETICS
ORGANIC COMPOUNDS
PYROLYSIS
REACTION KINETICS
TEMPERATURE RANGE
THERMOCHEMICAL PROCESSES
020400* - Petroleum- Processing
020800 - Petroleum- Waste Management
400201 - Chemical & Physicochemical Properties
023000 - Petroleum- Properties & Composition