| 20120000821 | HYDROPROCESSING CATALYSTS AND METHODS FOR MAKING THEREOF - A method to reduce metal deposit in the hydroprocessing or upgrade of heavy oil feedstock is provided. The method comprises feeding an improved catalyst feed to the system, with the improved catalyst feed comprising a fresh slurry catalyst and a deoiled spent catalyst, with the deoiled spent catalyst being present in an amount of at least 10% the catalyst feed for the heavy oil upgrade system to have at least a 5% reduction in metal contaminant build-up compared to heavy oil upgrade system without the deoiled spent catalyst in the feed. | 01-05-2012 |
