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| Number | Title | Issue Date |
| 4036740 | Hydrocarbon catalytic cracking process An improved hydrocarbon catalytic cracking process which comprises determining the concentrations of carbon dioxide and carbon monoxide in the gaseous effluent from the catalyst regeneration zone and adjusting the rate of addition of a selective treating ... | 07/19/1977 |
| 4035284 | Method and system for regenerating fluidizable catalyst particles A hydrocarbon conversion-catalyst regeneration operation is described which relies upon a dense fluid catalyst bed superimposed by a dispersed catalyst phase operation to effect elevated temperature regeneration of the catalyst providing low CO levels les... | 07/12/1977 |
| 4031002 | Passivating metals on cracking catalysts with antimony compounds Metals on a cracking catalyst are passivated by contacting the catalyst with at least one compound selected from the group of compounds having the general formula ##STR1## WHEREIN THE R groups which can be the same or different consist of hydroc... | 06/21/1977 |
| 4031031 | Method for treating catalyst used for catalytic reactions of hydrocarbons at the time of catalyst removal A method of removing a catalyst used for catalytic reactions of hydrocarbons from a reaction system for exchange or otherwise comprising treating the catalyst with water or a mineral oil in the presence of a surface active substance or both a surface acti... | 06/21/1977 |
| 4026821 | Catalyst regeneration A process for reactivating or regenerating catalysts which have become inactivated due to accumulation of carbon deposits or sulfur-containing carbon deposits on the catalyst surface during the course of use in catalytically refining various petroleum oil... | 05/31/1977 |
| 4025458 | Passivating metals on cracking catalysts Metals on a cracking catalyst are passivated by contacting the catalyst with at least one compound selected from the group of compounds having the general formula ##STR1## WHEREIN THE R groups which can be the same or different consist of hydroc... | 05/24/1977 |
| 4022675 | Filtering process A process for separating finely divided, electrically conductive materials from hot liquid hydrocarbon feed stock for a fixed bed catalytic process such as hydrodesulfurization of gas oils or heavier petroleum fractions or hydrocracking. The feed stock is... | 05/10/1977 |
| 3997428 | Vaporization of oil feed by addition of regenerated catalyst In the catalytic cracking of oil, especially in a riser-type of transport pipe reactor, feedstock in the liquid state is added to the reactor together with sufficient regenerated catalyst to effect essentially complete vaporization of the oil but with min... | 12/14/1976 |
| 3977963 | Method of negating the effects of metals poisoning on cracking catalysts A method of negating the effects of metals poisoning on a cracking catalyst which comprises contacting the catalyst containing metal contaminants with a bismuth or manganese compound.... | 08/31/1976 |
| 3960707 | Simulation of catalytic cracking process The specific disclosure is directed to a catalytic cracking model wherein the reactant and product species are lumped according to molecular type and boiling range. The specific invariant lumping scheme includes paraffins, naphthenes, aromatic rings, and ... | 06/01/1976 |
| 3960708 | Process for upgrading a hydrocarbon fraction A process for upgrading a hydrocarbon fraction by contacting the hydrocarbon fraction with a dense-water-containing fluid at a temperature in the range of from about 600°F. to about 900°F. in the absence of externally supplied hydrogen and of pretreatme... | 06/01/1976 |
| 3959117 | Fluid catalytic cracking of hydrocarbons A transport type fluid catalytic cracking reactor comprising a riser conduit, a flow reversal means and a downcomer conduit, wherein the flow reversal means has a closable top such that a shorter or longer residence time of catalyst and oil vapor in the t... | 05/25/1976 |
| 3954600 | Catalytic cracking process for producing middle distillate A catalytic cracking of hydrocarbons in the presence of an added olefin-containing naphtha increases the selectivity and yield of middle distillate.... | 05/04/1976 |
| 3948757 | Fluid catalytic cracking process for upgrading a gasoline-range feed A fluid catalytic cracking process for simultaneously cracking a gas oil feed and upgrading a gasoline-range feed to produce high quality motor fuel. The gasoline-range feed is contacted with freshly regenerated catalyst in a relatively upstream portion o... | 04/06/1976 |
