摘要:
A process for economically converting carbo-metallic oils to lighter products. The carbo-metallic oils contain 650.degree. F.+ material which is characterized by containing material which will not boil below about 1025.degree. F., a carbon residue on pyrolysis of at least about 2, and a nickel plus vanadium content of at least about 4 parts per million. This process comprises adding an additive to the feedstock consisting of a compound containing titanium, zirconium, or aluminum so as to restore cracking activity of high metal contaminated and deactivated, zeolite containing catalysts, resulting from processing of these carbo-metallic oils.
摘要:
A process for economically converting carbo-metallic oils to lighter products. The carbo-metallic oils contain 650.degree. F.+ material which is characterized by containing material which will not boil below about 1025.degree. F., a carbon residue on pyrolysis of at least about 2, and a nickel plus vanadium content of at least about 4 parts per million. This process comprises adding an additive to the feedstock consisting of a compound containing titanium, zirconium, or aluminum so as to restore cracking activity of high metal contaminated and deactivated, zeolite containing catalysts, resulting from processing of these carbo-metallic oils.
摘要:
An improved process and catalyst for economically converting carbo-metallic oils to lighter products. This process is practiced in accordance with effective metals management, carbon management and catalyst activity management combined with feed atomization-vaporization, efficient stripping of carbonaceous material from the coked catalyst, exothermic and endothermic removal of hydrocarbonaceous material to effectively maintain the RCC unit in heat balance. This reduced crude cracking process is practiced with a new and improved catalyst composition identified as RCCC-1 Special that is characterized by the following composition; at least 30 wt % rare earth exchanged "Y" faujasite crystalline zeolite with a silica to alumina ratio of at least 5 of a high lanthanum to cerium ratio and residual sodium content less than 0.30 wt %, is provided with a pore volume greater than 0.35 cc/gm. and comprises a clay matrix material that may or may not be acidic with pore size openings in the range of 500 to 2,000 angstroms. The RCCC-1 Special can contain metal promoters to catalyze the endothermic removal of coke and the partial removal of hydrogen present in the carbonaceous material with carbon dioxide. In addition, metal additives to passivate and immobilize vanadium are contemplated.
摘要:
An improved process and catalyst for economically converting carbo-metallic oils to lighter products. This process is practiced in accordance with effective metals management, carbon management and catalyst activity management combined with feed atomization-vaporization, efficient stripping of carbonaceous material from the coked catalyst, exothermic and endothermic removal of hydrocarbonaceous material to effectively maintain the RCC unit in heat balance. This reduced crude cracking process is practiced with a new and improved catalyst composition identified as RCCC-1 Special that is characterized by the following composition; at least 30 wt % rare earth exchanged "Y" faujasite crystalline zeolite with a silica to alumina ratio of at least 5 of a high lanthanum to cerium ratio and residual sodium content less than 0.30 wt %, is provided with a pore volume greater than 0.35 cc/gm. and comprises a clay matrix material that may or may not be acidic with pore size openings in the range of 500 to 2,000 angstroms. The RCCC-1 Special can contain metal promoters to catalyze the endothermic removal of coke and the partial removal of hydrogen present in the carbonaceous material with carbon dioxide. In addition, metal additives to passivate and immobilize vanadium are contemplted.
摘要:
A process is disclosed for economically converting carbo-metallic oils to liquid fuel products by bringing a converter feed containing 650.degree. F.+ material characterized by a carbon residue on pyrolysis of at least about 1 and by containing at least about 4 ppm of Nickel Equivalents of heavy metals, including nickel, into contact with a particulate cracking catalyst in a progressive flow type reactor having an elongated conversion zone. The suspension of catalyst and feed in the reactor has a vapor residence time in the range of about 0.5 to about 10 seconds, a temperature of about 900.degree. F. to about 1400.degree. F. and a pressure of about 10 to about 50 pounds per square inch absolute for causing a conversion per pass in the range of about 50 to about 90 percent while depositing nickel on the catalyst and coke on the catalyst in amounts in the range of about 0.3 to about 3 percent by weight. The coke-laden catalyst is separated from the resulting stream of hydrocarbons and regenerated by combustion of the coke with oxygen, the regenerated catalyst being characterized by deposited nickel in at least a partially oxidized state and a level of carbon on catalyst of about 0.25 percent by weight or less. The regenerated catalyst is contacted with a reducing gas under reducing conditions sufficient to reduce at least a portion of the oxidized nickel deposits to a reduced state and the regenerated catalyst with reduced nickel deposits is recycled to the conversion zone for contact with fresh feed. Water is also introduced into the reactor conversion zone and the amount of water and the amount of reduced nickel on the recycled catalyst are sufficient to provide a steam reforming reaction so that hydrogen deficient components of the feed are converted to products having higher hydrogen to carbon ratios and the amount of feed converted to coke is reduced. The amount of deposited nickel on catalyst is preferably in the range from about 2,000 to about 20,000 ppm and the mole ratio of water relative to feed in the conversion zone is preferably in the range from about 2 to about 14.
摘要:
A process is disclosed for the conversion of a hydrocarbon oil feed having a significant content of vanadium to lighter oil products by contacting the feed under conversion conditions in a conversion zone with a catalyst containing a metal additive to immobilize vanadium compounds. Conversion conditions are such that coke and vanadium are deposited on the catalyst in the conversion zone. Coked catalyst is regenerated in the presence of an oxygen containing gas at a temperature sufficient to remove the coke and regenerated catalyst is recycled to the conversion zone for contact with fresh feed. The metal additive is present on the catalyst in an amount sufficient to immobilize the vanadium compounds in the presence of oxygen containing gas at the catalyst regeneration temperature. A catalyst composition comprises a crystalline alumino-silicate zeolite dispersed in an amorphous inert solid matrix containing the metal additive, which may be introduced into the catalyst during the conversion process or during catalyst manufacture. Metal additives include water soluble inorganic metal salts and hydrocarbon soluble inorganic metal salts and hydrocarbon soluble organometallic compounds of select metals.
摘要:
A catalyst nominally containing zeolite, clay and silica-alumina gel. The zeolite is preferably partially exchanged with high La/Ce ratio solution in a wetting step. The catayst and processes for its manufacture and use are disclosed. The catalyst is excellent for processing heavy oils, generally produces higher LCO/slurry oil ratio and has high metals tolerance.
摘要:
A catalyst nominally containing zeolite, clay and silica-alumina gel is disclosed. The zeolite is preferably partially exchanged with high La/Ce ratio solution in a wetting step. The catalyst and processes for its manufacture and use are disclosed. The catalyst is excellent for processing heavy oils, generally produces higher LCO/slurry oil ratio and has high metals tolerance.
摘要:
A process is disclosed for the treatment of a hydrocarbon oil feed having a significant content of vanadium to provide a higher grade of oil products by contacting the feed under treatment conditions in a treatment zone with sorbent material containing a metal additive to immobilize vanadium compounds. Treatment conditions are such that coke and vanadium are deposited on the sorbent in the treatment zone. Coked sorbent is regenerated in the presence of an oxygen containing gas at a temperature sufficient to remove the coke, and regenerated sorbent is recycled to the treatment zone for contact with fresh feed. The metal additive is present on the sorbent in an amount sufficient to immobilize the vanadium compounds in the presence of oxygen containing gas at the sorbent regeneration temperature. A sorbent composition disclosed comprises a kaolin clay containing the metal additive, which may be introduced into the clay during the treatment process or during sorbent manufacture. Metal additives include water soluble inorganic metal salts and hydrocarbon soluble organo-metallic compounds of select metals.
摘要:
A process is disclosed for the conversion of a hydrocarbon oil feed having a significant content of vanadium to lighter oil products by contacting the feed under conversion conditions in a conversion zone with a catalyst containing a metal additive to immobilize vanadium compounds. Conversion conditions are such that coke and vanadium are deposited on the catalyst in the conversion zone. Coked catalyst is regenerated in the presence of an oxygen containing gas at a temperature sufficient to remove the coke and regenerated catalyst is recycled to the conversion zone for contact with fresh feed. The metal additive is present on the catalyst in an amount sufficient to immobilize the vanadium compounds in the presence of oxygen containing gas at the catalyst regeneration temperature. A catalyst composition comprises a crystalline alumino-silicate zeolite dispersed in an amorphous inert solid matrix containing the metal additive, which may be introduced into the catalyst during the conversion process or during catalyst manufacture. Metal additives include water soluble inorganic metal salts and hydrocarbon soluble inorganic metal salts and hydrocarbon soluble organometallic compounds of select metals.