Effect of catalyst properties on heavy feed hydroprocessing
During the past decade research and development studies on catalytic hydroprocessing of heavy petroleum fractions have emphasized the production of low sulfur fuels from vacuum gas oils and atmospheric residua. In recent years demands on catalytic hydroprocessing have intensified due to increasing crude oil cost and the need to convert heavy feeds to more useful products. This has resulted in the need to extend the capabilities of hydroprocessing catalysts and obtain a better understanding of their use with a wide range of feeds. In addition to treating feeds such as high metals, heavy crudes and vacum residua, there has also been a change in process objective. Hydrodesulfurization (HDS) is no longer the only key reaction; other reactions such as nickel, vanadium, and nitrogen removal, along with Conradson carbon residue conversion, are now also important. The ability of catalytic hydroprocessing to upgrade high sulfur, high metals residua from conventional crudes, and to effectively process heavy unconventional feedstocks, depends on the ability of the catalyst to treat the high molecular weight asphaltene fraction which contains the highest concentration of contaminants. In order to study the capability of catalysts to effectively hydrotreat asphaltenes, a special feedstock was prepared which contained a large portion of the total contaminants in the asphaltene fraction. The activity, selectivity, and kinetics of the various reactions occurring during hydroprocessing with Co--Mo on alumina catalysts have been studied with this feed. The effects of catalyst parameters such as pore size and Co--Mo level are discussed. Results of hydrodesulfurization activity are reported along with metals removal and denitrogenation. (JRD)
- Research Organization:
- Exxon Research and Development Labs., Baton Rouge, LA
- OSTI ID:
- 6354859
- Report Number(s):
- CONF-780305-P3
- Journal Information:
- Prepr., Div. Pet. Chem., Am. Chem. Soc.; (United States), Vol. 23:3; Conference: American Chemical Society conference, Anaheim, CA, USA, 12 Mar 1978
- Country of Publication:
- United States
- Language:
- English
Similar Records
ROSE{reg_sign} - A flexible process for upgrading heavy crude, atmospheric residue, or vaccum residue
Hydroprocessing of narrow-boiling gas oil fractions; Dependence of reaction kinetics on molecular weight
Related Subjects
ASPHALTENES
DEMETALLIZATION
DESULFURIZATION
HYDROCRACKING
ALUMINIUM OXIDES
CATALYSTS
COBALT
MOLYBDENUM
ALUMINIUM COMPOUNDS
ASPHALTS
BITUMENS
CHALCOGENIDES
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
ELEMENTS
METALS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PYROLYSIS
REFRACTORY METALS
SEPARATION PROCESSES
TAR
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS
020400* - Petroleum- Processing