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| Number | Title | Issue Date |
| 7354560 | Process for the production of hydrogen Process for the removal of organic and/or inorganic sulfur from an ammonia stream by passing said stream through a fixed bed of sulfur absorbent in a sulfur absorber and withdrawing a sulfur-free ammonia stream, wherein said sulfur absorbent is a catalyst having a t... | 04/08/2008 |
| 6893482 | Method for improving metals recovery using high temperature pressure leaching The present invention is directed to a system for recovering metal values from metal-bearing materials. During a reactive process, a seeding agent is introduced to provide a nucleation site for the crystallization and/or growth of solid species which otherwise tend ... | 05/17/2005 |
| 6790247 | Compact fuel processor An apparatus for carrying out a multi-step process of converting hydrocarbon fuel to a substantially pure hydrogen gas feed includes a plurality of reaction zones arranged in an insulated, box-shaped, compact fuel processor. The multi-step process includes preheatin... | 09/14/2004 |
| 6733741 | Method and apparatus for activating a hydrogen-absorbing alloy The present invention provides a method and apparatus for activating a hydrogen-absorbing alloy. An embodiment of the present invention includes, compressing and supplying hydrogen from a first container in a hydrogen release condition to a second container in a hyd... | 05/11/2004 |
| 6626979 | Method for improving metals recovery using high temperature pressure leaching The present invention is directed to a process for recovering metal values from metal-bearing materials. During a reactive process, a seeding agent is introduced to provide a nucleation site for the crystallization and/or growth of solid species which oth... | 09/30/2003 |
| 6451088 | Method for improving metals recovery using high temperature leaching The present invention is directed to a process for recovering metal values from metal-bearing materials. During a reactive process, a seeding agent is introduced to provide a nucleation site for the crystallization and/or growth of solid species which oth... | 09/17/2002 |
| 6287529 | Method for selective catalytic oxidation of carbon monoxide In a method and apparatus for selective catalytic oxidation of carbon monoxide, the gas mixture and an additionally added oxidizing gas are conducted through a reactor containing the catalyst. Oxidizing gas is added at several points along the mixed gas f... | 09/11/2001 |
| 6206951 | Method for leaching nickel from nickel matte The invention relates to a method for leaching sulfidic nickel matte and particularly copper rich nickel matte, as well as for leaching said matte together with a metallic copper and/or copper-nickel matte. The leach of nickel matte is carried out as pres... | 03/27/2001 |
| 6117209 | Hydrometallurgical process for treating alloys and drosses to recover the metal components A hydrometallurgical method involves treating a dross source containing typically both antimony and tin and treating the dross to a series of chemical operations to yield a soft lead precursor, suitable for making soft lead for lead-based alloys for batte... | 09/12/2000 |
| 5773675 | Method for eliminating carbon oxides in the hydrogen feed to a butane isomerization process A method for isomerizing at least a portion of a butane stream using a hydrogen stream containing more than 0.1 ppmv of carbon monoxide, carbon dioxide or a mixture thereof, the method comprising: charging the hydrogen stream containing at least 0.1 ppmv ... | 06/30/1998 |
| 5770781 | Method for eliminating carbon oxides in feeds to a C5 and C6 paraffin isomerization process A method for reducing the benzene content and isomerizing at least a portion of a C5 /C6 paraffinic stream using a hydrogen stream containing more than 0.1 ppmv of carbon monoxide, carbon dioxide or a mixture thereof, the method comp... | 06/23/1998 |
| 5678167 | Method for dissolving nuclear fuels The powdered form of nuclear fuels such as uranium dioxide and plutonium dioxide are dispersed in an about 3N aqueous nitric acid solution, and irradiated by UV rays at a wavelength of approximately 300 nm in order to improve a dissolving rate of the nucl... | 10/14/1997 |
| 5300273 | Process for producing a vapor mixture of titanium tetrachloride and aluminum trichloride An improved process is provided for producing titanium tetrachloride vapor admixed with a desired particular amount of aluminum trichloride vapor for use in the production of rutile titanium dioxide. The vapor mixture is derived from a titanium tetrachlor... | 04/05/1994 |
| 5059411 | Process and apparatus for the production of carbon monoxide Methanol is catalytically cracked (at 4) then the essential portion of the components other than CO is removed by washing with water (at 5), selective adsorption (at 7) and permeation (at 8). The process and apparatus has application to the production of ... | 10/22/1991 |
| 4553981 | Enhanced hydrogen recovery from effluent gas streams Effluent gas streams for steam reforming, partial oxidation or coal gasification operations are advantageously treated in shift conversion, scrubbing and pressure swing adsorption units for recovery of a purified, hydrogen-containing product gas stream. B... | 11/19/1985 |
| 4320100 | Purification of gas mixtures The invention concerns a process for the purification of a hydrogen-containing gas mixture comprising up to 45% by volume of hydrogen, together with carbon oxides, hydrogen cyanide and impurities including nitrogen oxides and/or oxygen. The process compri... | 03/16/1982 |
| 4313916 | Process for the purification of non-reacting gases A process is disclosed for the purification of an inert or non-reacting gas such as lower mono-olefins by the removal of trace amounts of reacting impurities such as carbon dioxide therefrom, comprising passing said gas through an essentially non-aqueous ... | 02/02/1982 |
| 4273748 | Process for removing harmful components from gas A reducing gas, such as a synthetic fuel gas, produced by gasification of a fossil fuel, containing ammonia or both ammonia and hydrogen sulfide, is purified by passing the reducing gas at first, through a first removing agent of iron or nickel system whe... | 06/16/1981 |
| 4254094 | Process for producing hydrogen from synthesis gas containing COS Process for treating synthesis gas to recover a purified essentially sulfur-free hydrogen-rich stream. The novel sequence of operations employed comprises initially removing from the feed gas, such as from a synthesis gas derived from partial oxidation of... | 03/03/1981 |
| 4216198 | Self-regenerating method and system of removing oxygen and water impurities from hydrogen gas Oxygen and water impurities are cleaned from hydrogen, which is to be stored in tanks containing a hydride-forming metallic alloy, using a novel, self-cleaning filter system. The impurity-containing hydrogen gas is first passed through a catalyst bed comp... | 08/05/1980 |
| 4139439 | Hydrogen isotope separation A method of separating isotopes of hydrogen which comprises subjecting a ture of methane and isotopes of hydrogen in a methane to hydrogen mole ratio from about 1000:1 to about 1:10 to a glow electrical discharge from about 10-3 to about 50eV ... | 02/13/1979 |
| 4137298 | Production of a hydrogen-rich gas from a hydrogen, carbon monoxide and carbon dioxide-containing fuel gas In a process for the production of hydrogen-rich gas from a gas containing hydrogen, carbon monoxide, carbon dioxide and other components by contacting the gas in a formate synthesis zone with an aqueous solution containing alkali metal carbonate and/or b... | 01/30/1979 |
| 4092405 | Separation of deuterium from hydrogen Method of and apparatus for non-equilibrium chemical kinetic separation of deuterium from hydrogen are described wherein hydrogen with its normal abundance of deuterium and an appropriate reactant, bromine, are supplied to a deuterium reaction vessel wher... | 05/30/1978 |
| 4087373 | Novel method for the production of hydrogen and hydrogen-carbon monoxide mixtures Calcium formate is heated to a temperature in the range of from 300° to 400° C to form calcium carbonate, hydrogen and carbon monoxide and the gases are bled off. The calcium carbonate is then heated to about 825° C whereby calcium oxide and carbon dio... | 05/02/1978 |
| 4048292 | CO purification process High purity CO is made quite efficiently with regard to energy consumption from CO2 -free gas streams containing at least 25% by volume CO and also containing H2 and small amounts of other gases such as N2 and CH4 | 09/13/1977 |
| 4036720 | Hydrogen isotope separation A method of separating isotopes of hydrogen which comprises subjecting a ture of nitrogen and isotopes of hydrogen in a H2 --N2 mole ratio from 1:4 to 10:1 to a glow electrical discharge from 10.sup.-3 to 10+.sup.1 | 07/19/1977 |
| 4008174 | Process for regenerating a solid copper-chromium reactant used in the removal of hydrogen sulfide from hydrogen recycle gas A process is disclosed for regenerating a solid reactant comprising a copper component and a chromium component disposed on a porous carbon support when the reactant has been expended by reaction with hydrogen sulfide contained in hydrogen recycle gas in ... | 02/15/1977 |
