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| Number | Title | Issue Date |
| 7288685 | Production of olefins from biorenewable feedstocks A process for producing olefins from biorenewable feedstocks has been developed. The process comprises first pretreating the feedstock, e.g. vegetable oil, to remove contaminants such as alkali metals and then cracking the purified feedstock in a fluidized catalytic... | 10/30/2007 |
| 6905593 | Method for removing calcium from crude oil A calcium-containing hydrocarbonaceous material is treated with an aqueous mixture, comprising acetate ion and an alkaline material and having a pH in the range of 3.0 to 5.0, in order to extract at least a portion of the calcium from the hydrocarbonaceous material ... | 06/14/2005 |
| 5160603 | Catalytic cracking with sulfur compound added to the feed A catalytic cracking process for heavy metals and asphaltene containing feed is disclosed. A reactive sulfur compound, preferably H2 S, is dissolved in the heavy feed and then kept at a temperature and for a time sufficient to at least partiall... | 11/03/1992 |
| 4846957 | Precipitation of asphaltene Asphaltenes are separated from hydrocarbon oil by bringing the oil into contact with formic acid or a water-soluble organic acid consisting of carbon, hydrogen and oxygen and having at least two functional groups.... | 07/11/1989 |
| 4790930 | Two-step heterocyclic nitrogen extraction from petroleum oils A process is disclosed for the removal of basic heterocyclic nitrogen compounds from a petroleum crude oil or fraction thereof which comprises first treating the petroleum crude oil or fraction thereof rich in basic heterocyclic nitrogen compounds in a tw... | 12/13/1988 |
| 4552646 | Dearsenating of shale oil with metal chlorates Arsenic impurities and, optionally, iron impurities are removed from a hydrocarbon-containing feed stream, preferably shale oil, by contacting it with an aqueous solution of a metal chlorate and an acid having a pKa of less than 3.... | 11/12/1985 |
| 4338186 | Shale oil process A process for converting the raffinate from an HCl-treated shale oil to a suitable feedstock for a hydrocracking reactor for making fuels from the raffinate by hydrotreating the raffinate and thereafter water quenching the hydrotreated product.... | 07/06/1982 |
| 4256567 | Treatment of petroleum stocks containing metals Petroleum crudes, residual stocks, gas oils and the like which contain metals are pretreated with a sulfonating agent and the mixture separated into two fractions of which the lesser in volume has a greater concentration of metal and Conradson Carbon comp... | 03/17/1981 |
| 4088566 | Transformer oil processing A transformer oil processing sequence is disclosed which produces a superior oil without the use of large doses of sulfuric acid and the resultant sludge problems. The process comprises contacting a naphthenic based oil with an oxygen-containing gas in th... | 05/09/1978 |
| 4081351 | Conversion of coal into motor fuel This invention provides an improved process for deriving motor fuel from coal which involves the steps of solubilizing coal in a liquefaction solvent; separating undissolved solids from the liquefaction solution; fractionating the liquid phase by distilla... | 03/28/1978 |
