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| Number | Title | Issue Date |
| 4646771 | One-step system for transforming a water-in-oil emulsion into an oil-in-water emulsion There is provided a process for the formulation of an oil-in-water emulsion from a produced hydrocarbon crude which includes a water-in-oil emulsion. A substantially oil insoluble nonyl phenol emulsifier is added with agitation to the crude when such crud... | 03/03/1987 |
| 4627458 | One-step process for transforming a water-in-oil emulsion into an oil-in-water emulsion There is provided a process for the formulation of an oil-in-water emulsion from a produced hydrocarbon crude which includes a water-in-oil emulsion. A surface-active chemical system is added with agitation to the crude when such crude is at a temperature... | 12/09/1986 |
| 4592901 | Method of removing suspended solids from phosphoric acid A process for removing impurities from phosphoric acid, especially concentrated wet process phosphoric acid, comprises filtering phosphoric acid through a filter cake (e.g., diatomite) on a porous member at a temperature in the range of about 57° C. to a... | 06/03/1986 |
| 4357802 | Geothermal energy production Process for recovery of energy from geothermal fluids such as geothermal brine in a geothermal formation by injecting a water immiscible working fluid, preferably organic, typically a hydrocarbon, e.g. isobutane, into the geothermal formation containing a... | 11/09/1982 |
| 4358344 | Process for the production and recovery of fuel values from coal A method of pyrolyzing and desulfurizing coal in a transport reactor to recover volatile fuel values and hydrogen by heating particulate coal entrained in a carrier gas substantially free of oxygen to a pyrolysis temperature in a zone within three seconds... | 11/09/1982 |
| 4341077 | Process and system for recovery of energy from geothermal brines and other hot water sources Process and system for recovery of energy from geothermal brines and other hot water sources, which comprises direct contact heat exchange between the brine or hot water, and a hydrocarbon working fluid, e.g. n-butane, in a heat transfer column, the heat ... | 07/27/1982 |
| 4334959 | Mixing method and apparatus Method of mixing particulate materials comprising contacting a primary source and a secondary source thereof whereby resulting mixture ensues; preferably at least one of the two sources has enough motion to insure good mixing and the particulate materials... | 06/15/1982 |
| 4326505 | Surgical procedure for embryo transplants on animals A method is disclosed for implanting an embryo transplant from a donor mammal into the uterus of a recipient mammal. The method comprises making an incision in the lateral wall of the vagina of a recipient mammal posterior of the cervix. The uterine horn ... | 04/27/1982 |
| 4322222 | Process for the gasification of carbonaceous materials Carbonaceous material is gasified in a first pyrolysis zone substantially in an absence of free oxygen by heating with a solid heating media. The carbonaceous material is conducted through the first pyrolysis zone in turbulent flow to provide for the rapi... | 03/30/1982 |
| 4276748 | Recovery of energy from geothermal brine and other hot water sources Process and system for recovery of energy from geothermal brines and other hot water sources, by direct contact heat exchange between the brine or hot water, and an immiscible working fluid, e.g. a hydrocarbon such as isobutane, in a heat exchange column,... | 07/07/1981 |
| 4277448 | Phosphoric acid process with high circulation rates Phosphoric acid is prepared from phosphate rock and sulfuric acid by using a reaction train comprising a dissolving slurry and a crystallization slurry maintained at different sulfate levels. Both inter and intra vessel circulation are used at high rates ... | 07/07/1981 |
| 4276155 | Method for recycling the water used in a process for recovering glass from municipal waste A process for efficiently recycling the water used in the various stages of a process for recovering glass from municipal trash. The invention comprises the separate treatment and recycling of the process water resulting from the first step separation of ... | 06/30/1981 |
| 4272960 | Process and system for recovery of working fluid for direct contact heat exchange In the recovery of energy from geothermal brines and other water containing or hot water sources, such brine or hot water under pressure is introduced into direct heat exchange contact with a working fluid such as isobutane, the resulting hot isobutane is... | 06/16/1981 |
| 4263124 | Process for minimizing solids contamination of liquids from coal pyrolysis In a continuous process for recovery of liquid hydrocarbons from a solid carbonaceous material by pyrolysis of the carbonaceous material in the presence of a particulate source of heat, particulate contamination of the liquid hydrocarbons is minimized. Th... | 04/21/1981 |
| 4260584 | Apparatus useful for wet process phosphoric acid production The invention comprises a multi-vessel reaction apparatus useful for reacting phosphate rock and sulfuric acid in which the reaction slurry undergoes intra- and inter- vessel circulation (preferably through a draft tube). The solution portion of the slurr... | 04/07/1981 |
| 4243637 | Uranium recovery from pre-treated phosphoric acid Impure phosphoric acid containing uranium values is pretreated with a water immiscible organic sulfonic acid, preferably in conjunction with a water immiscible organic acid phosphate compound, for extraction of ionic metallic impurities and organic impuri... | 01/06/1981 |
| 4243489 | Pyrolysis reactor and fluidized bed combustion chamber A solid carbonaceous material is pyrolyzed in a descending flow pyrolysis reactor in the presence of a particulate source of heat to yield a particulate carbon containing solid residue. The particulate source of heat is obtained by educting with a gaseous... | 01/06/1981 |
| 4239599 | Process for stripping oil from fluidized ash and char particles to prepare the particles for decarbonization A mixture of a high density particulate inorganic heat source and a low density particulate carbon containing residue formed in the pyrolysis of a solid waste is passed along with some entrained pyrolytic oil to a fluidized bed of particles, where a gas i... | 12/16/1980 |
| 4235854 | Method for purifying wet process phosphoric acid A method for removing impurities from wet process produced phosphoric acid and recovering phosphate values retained by the impurities is disclosed. The wet process produced phosphoric acid is filtered through a diatomite filter cake in a porous medium at ... | 11/25/1980 |
| 4234388 | Removal of chlorine from pyrolytic oils The gas stream obtained from the pyrolysis of solid organic wastes and containing chlorine in the form of hydrogen chloride is processed to obtain a substantially chlorine free pyrolytic oil. The gas stream is first contacted with a hydrocarbon immiscible with... | 11/18/1980 |
| 4229185 | Process for the gasification of carbonaceous materials Carbonaceous material is gasified in a first pyrolysis zone substantially in an absence of free oxygen by heating with a solid heating media. The carbonaceous material is conducted through the first pyrolysis zone in turbulent flow to provide for the rapi... | 10/21/1980 |
| 4225415 | Recovering hydrocarbons from hydrocarbon-containing vapors Values are recovered from a hydrocarbon-containing vapor by contacting the vapor with quench liquid consisting essentially of hydrocarbons to form a condensate and a vapor residue, the condensate and quench fluid forming a combined liquid stream. The comb... | 09/30/1980 |
| 4220630 | Hemihydrate type process for phosphoric acid manufacture using additive to improve filterability When sulfate ions and a solution of monocalcium phosphate are reacted under conditions which result in the formation of a slurry comprising calcium sulfate hemihydrate and phosphoric acid of about 35% to about 55% P2 O5, filtration i... | 09/02/1980 |
| 4218310 | Purification of particulate glass by mag separation of impurities The present invention relates to the purification of glass, obtained by froth flotation from shredded municipal trash; more particularly, the present invention relates to a process for removing aluminum oxide, especially corundum, and silicon carbide part... | 08/19/1980 |
| 4213302 | Process and system for recovery of energy from geothermal brines and other water containing sources Process and system for recovery of energy from geothermal brines and other water containing or hot water sources, which comprises direct contact heat exchange between the brine or hot water, and a working fluid, e.g. n-butane, in a heat transfer column, t... | 07/22/1980 |
| 4210438 | Ammoniated phosphoric acid fertilizer production Liquid ammonia, a reactant with superphosphoric acid in the process for fertilizer production, is passed through an annular jacket surrounding a tubular reaction zone where reaction occurs to maintain the interior surface of the tubular reactor at a tempe... | 07/01/1980 |
| 4196172 | Hemihydrate type phosphoric acid process Phosphate rock and sulfuric acid are reacted under conditions which result in the formation of calcium sulfate hemihydrate and phosphoric acid of about 35% to about 55% P2 O5. A two vessel reaction system is used in which the reactio... | 04/01/1980 |
| 4188191 | Process for reducing the sulfur content of coal and coal char and the ignition temperature of coal char This invention covers a process for reducing the sulfur content of coal and coal char and the ignition temperature of coal char. Coal is converted into char at temperatures not in excess of about 1600° F. The char is introduced into a caustic system whic... | 02/12/1980 |
| 4167099 | Countercurrent direct contact heat exchange process and system Recovery of energy from geothermal brines and other hot water sources by direct contact heat exchange with a working fluid, such as a hydrocarbon working fluid, e.g. isobutane. The process and system consists of a plurality of stages, each stage including... | 09/11/1979 |
| 4166786 | Pyrolysis and hydrogenation process In a continuous process for recovery of values from a solid carbonaceous material, the carbonaceous material is pyrolyzed in the presence of a particulate source of heat to yield a particulate carbon containing residue of pyrolysis and volatilized hydroca... | 09/04/1979 |
| 4163693 | Fluidizing a mixture of particulate coal and char Method of mixing particulate materials comprising contacting a primary source and a secondary source thereof whereby resulting mixture ensues; preferably at least one of the two sources has enough motion to insure good mixing and the particulate materials... | 08/07/1979 |
| 4162959 | Production of hydrogenated hydrocarbons In a continuous process for recovery of values from a solid carbonaceous material, the carbonaceous material is pyrolyzed in the presence of a particulate source of heat to yield a particulate carbon containing residue of pyrolysis and volatilized hydroca... | 07/31/1979 |
| 4162943 | Slot pyrolysis reactor and method of pyrolysis Apparatus for conducting the flash pyrolysis of a primary material, particularly coal, and employing a secondary material, particularly hot char, as a heat source, comprising a rectangular slot for injection of a stream of particulate coal, which communic... | 07/31/1979 |
| 4155715 | Process for reducing the organic sulfur content of char This invention covers an improved hydrodesulfurization process which significantly reduces the organic sulfur content of char by first magnetically or electrostatically removing iron sulfides and precursors of iron sulfides from char and then hydrodesulfu... | 05/22/1979 |
| 4153514 | Pyrolysis process for solid wastes A process for the recovery of chemical values from waste solids, wherein shredded waste solids are intermixed with hot char and a carrier gas in turbulent flow and passed through a pyrolysis zone under turbulent conditions at a temperature ranging from ab... | 05/08/1979 |
| 4147593 | Flash pyrolysis of organic solid waste employing ash recycle Essentially carbon free inorganic particles formed from the decarbonization of a carbon containing solid residue of pyrolysis of comminuted organic solid waste is employed as the prime heat source for the pyrolysis of the comminuted organic solid waste.... | 04/03/1979 |
| 4146359 | Method for reacting nongaseous material with a gaseous reactant This invention relates to a new and novel method and apparatus for reacting nongaseous material with a gaseous reactant comprising introducing a first stream containing a nongaseous material into a reaction zone; simultaneously introducing a second stream... | 03/27/1979 |
| 4145274 | Pyrolysis with staged recovery In a continuous process for recovery of values contained in a solid carbonaceous material, the carbonaceous material is comminuted and then subjected to flash pyrolysis in the presence of a particulate heat source fed over an overflow weir to form a pyrol... | 03/20/1979 |
| 4141794 | Grid-wall pyrolysis reactor A carbonaceous material is pyrolyzed by introducing the carbonaceous material to a fast fluidized bed contained by a perforated wall and introducing a particulate source of heat through the perforations of the wall at an angle inclined to the path of trav... | 02/27/1979 |
| 4140748 | Hemihydrate type phosphoric acid process with crystal modifier Phosphate rock and sulfuric acid are reacted to produce phosphoric acid and calcium sulfate by means of the hemihydrate wet process. In this improved process, the calcium sulfate hemihydrate is crystallized from solution in the presence of an organic sulf... | 02/20/1979 |
