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| Number | Title | Issue Date |
| 7172686 | Method of increasing distillates yield in crude oil distillation Methods of separating components of a mixture, such as crude oil, are disclosed which increase the yield of individual components while decreasing the yield of residue. In one method, a heated mixture is fed to a column, a vapor stream is withdrawn from the column a... | 02/06/2007 |
| 6605208 | Process for reduction of emissions in asphalt production A process and apparatus are disclosed that relate generally to a process for reducing harmful or unwanted emissions during the production of asphalt, such as blue smoke. The process includes the introduction of a pump around of the wax oil fraction for re... | 08/12/2003 |
| 5814207 | Oil re-refining method and apparatus A method and apparatus for re-refining used oil, in which the used oil is processed in at least one cyclonic vacuum evaporator comprising a void evaporation chamber (4) into which feedstock is tangentially injected, and in which a fraction of the feedstoc... | 09/29/1998 |
| 5116485 | Apparatus and method for recovering diesel-quality fuel from produced crude oil An apparatus and process for recovering a diesel-quality fuel from produced crude oil is described. The diesel-quality fuel is produced by flashing the crude feedstock at high temperatures and recovering the diesel quality fuel as a liquid from a refluxin... | 05/26/1992 |
| 4824445 | Method for recycling in a crude oil stabilization installation, which improves the production of liquefied petroleum gas coming from the associated gases A method for recycling gas in an installation for the stabilization of crude oil (1) containing gas/liquid separation stages (2, 3, 4) whose gas removal pipes (12, 13, 14) are connected to the intake of a gas treatment installation (18) which provides a c... | 04/25/1989 |
| 4770747 | Vapro liquid deentrainment apparatus An inlet horn for reducing liquid entrainment of liquid in vapor products in distillation towers. The inlet horn has a tangential entry for the vapor-liquid feed which opens into a peripheral open bottomed horn with a number of deflector vanes angularly d... | 09/13/1988 |
| 4664784 | Method and apparatus for fractionating hydrocarbon crudes A method and apparatus are provided for distillation of hydrocarbon oil subject to coking threshold temperature limits. A hydrocarbon oil is heated to a first predetermined maximum temperature above which coking is likely to occur. The heated hydrocarbon ... | 05/12/1987 |
| 4606816 | Method and apparatus for multi-component fractionation Fractionation method and apparatus are provided, wherein heavy product is withdrawn from a first fractionator and introduced into a second fractionator, which operates in a predetermined moderate pressure range. The withdrawn heavy product is separated in... | 08/19/1986 |
| 4375387 | Apparatus for separating organic liquid solutes from their solvent mixtures Process and apparatus for extracting an organic liquid from an organic liquid solute/solvent mixture. The mixture is contacted with a fluid extractant which is at a temperature and pressure to render the extractant a solvent for the solute but not for the... | 03/01/1983 |
| 4321132 | Distillation of crude oil An entire crude oil stream is preheated by various sources of heat and brought to final temperature by a furnace. At this highest temperature, the stream is flashed into two portions, the heavier portion used only as a source of sensible heat for conserva... | 03/23/1982 |
| 4308130 | Crude oil distillation A novel crude oil fractional distillation process, characterized by improved regulation of reflux in the de-entrainment section of a fractional distillation column, is disclosed.... | 12/29/1981 |
| 4274944 | Fractionation process An improved two column crude oil fractional distillation process, characterized by transfer of top product from the second column to specified locations in the first column, is disclosed.... | 06/23/1981 |
| 4131538 | Method of separating a predetermined fraction from petroleum oil using multistage evaporators A method and apparatus for separating a predetermined fraction from a crude oil includes preheating the crude oil to vaporize a portion, and feeding the two-phase crude to a first stage flash evaporator. In the first stage evaporator, a vapor portion is s... | 12/26/1978 |
| 4082654 | Fractionation to remove a high-boiling material and a dissolved substance An improved method of simultaneously removing high-boiling materials and a volatile dissolved substance, such as carbon dioxide or hydrogen sulfide, from a hydrocarbon stream as is performed in feed preparation columns. About 25 to 75 percent of the feed ... | 04/04/1978 |
| 4082653 | Crude oil distillation process Heated hydrocarbon crude oil is passed into a first flash zone wherein it is separated into a first flash vapor and a first flash liquid. First flash vapor is water washed to remove soluble contaminants, and the resulting wash water and the first flash li... | 04/04/1978 |
| 4008150 | Fractionation to remove a high-boiling material and a dissolved substance An improved method of simultaneously removing high-boiling materials and a volatile dissolved substance, such as oxygen, from a hydrocarbon stream as is performed in feed preparation columns. About 25 to 75 percent of the feed stream is vaporized in a fla... | 02/15/1977 |
