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| Number | Title | Issue Date |
| 7431865 | Production of ammonia synthesis gas Ammonia synthesis gas production having a shift reaction stage employing a copper-based catalyst wherein the air supplied to the process is passed through an absorber that removes sulfur and/or halide contaminants, is described. The absorber has a support carrying a... | 10/07/2008 |
| 7371361 | Maximum reaction rate converter system for exothermic reactions An ammonia converter system and method are disclosed. The reactor can alter the conversion of ammonia by controlling the reaction temperature of the exothermic reaction along the length of the reactor to parallel the equilibrium curve for the desired product. The re... | 05/13/2008 |
| 7351751 | Autothermal reformer reactor processes A process for the startup of an ATR which does not contain an ignition means is provided. Also provided is a process to ascertain ATR catalyst activity prior to introduction of sufficient oxidant to form a flammable feed mixture. ... | 04/01/2008 |
| 7220505 | Autothermal reformer-reforming exchanger arrangement for hydrogen production Low-energy, low-capital hydrogen production is disclosed. A reforming exchanger 14 is placed in parallel with an autothermal reformer (ATR) 10 to which are supplied a preheated steam-hydrocarbon mixture. An air-steam mixture is supplied to the burner/m... | 05/22/2007 |
| 7172638 | Staged air autothermal reformer for improved startup and operation An autothermal reformer according to the principles of the present invention comprises a first stage that selectively receives a fuel flow, a first oxidant flow, and a steam flow. The first stage has a first portion of a catalyst bed. The fluids within the first sta... | 02/06/2007 |
| 7163648 | Method for manufacturing a hydrogen and nitrogen containing gas mixture The present invention relates to a method for manufacturing a hydrogen- and nitrogen containing gas mixture, where a mixture of steam and a carbon containing gas is fed to the retentate side of at least one hydrogen transport membrane syngas and sweep gas generator ... | 01/16/2007 |
| 7138001 | Partial oxidation reformer-reforming exchanger arrangement for hydrogen production Low-energy hydrogen production is disclosed. A reforming exchanger is placed in parallel with a partial oxidation reactor in a new hydrogen plant with improved efficiency and reduced steam export, or in an existing hydrogen plant where the hydrogen capacity can be i... | 11/21/2006 |
| 7118717 | Simplified article for carbon monoxide removal Provided are improved carbon monoxide removal articles and processes for treating hydrogen gas streams to achieve very low threshold levels of carbon monoxide. The articles have a substrate with an inlet end, an outlet end, a length extending between the inlet end t... | 10/10/2006 |
| 7094384 | Combined methane decomposition and ammonia formation cell An ammonia synthesis process and apparatus are provided which are energy efficient and minimize greenhouse-gas-emission during the processing of natural gas and air. In the process a stream of natural gas is divided into two streams, one of which is mixed with air a... | 08/22/2006 |
| 7090816 | Low-delta P purifier for nitrogen, methane, and argon removal from syngas A process for manufacturing ammonia from syngas with excess air for reforming and nitrogen removal with low pressure losses is disclosed. Auto-refrigeration for cooling the syngas for cryogenic hydrogen enrichment is provided by expansion of a hydrogen-lean waste fl... | 08/15/2006 |
| 7074347 | Process for the preparation of synthesis gas Process for the production of synthesis gas by catalytic steam reforming of a hydrocarbon containing feedstock in parallel in an autothermal steam reformer and in one or more steam reformers in series, the heat for the steam reforming reactions in the one or more st... | 07/11/2006 |
| 7052530 | Hydrogen purification membranes, components and fuel processing systems containing the same Hydrogen purification membranes, hydrogen purification devices, and fuel processing and fuel cell systems that include hydrogen purification devices. The hydrogen purification membranes include a metal membrane, which is at least substantially comprised of palladium... | 05/30/2006 |
| 7041272 | Systems and processes for providing hydrogen to fuel cells A process and system for providing a hydrogen-containing gas stream to a fuel cell anode that includes providing a hydrogen-containing gas stream that includes carbon monoxide, introducing the hydrogen-containing gas stream into a pressure swing adsorption module th... | 05/09/2006 |
| 6979504 | Fuel cell system automatic power switching method and apparatus A fuel cell system includes a fuel cell stack, a battery, and a control system. A power circuit couples the fuel cell system selectively between the fuel cell stack and the battery. The power circuit includes a battery supply switch responsive to a voltage across th... | 12/27/2005 |
| 6969493 | Apparatus for producing a hydrogen-rich and low carbon monoxide gas A process for generating a high-hydrogen, low-carbon monoxide gas comprises generating a product gas in a gas generating device. The product gas contains hydrogen and carbon monoxide that are generated from catalytic water vapor reforming of a water/fuel mixture and... | 11/29/2005 |
| 6953630 | Fuel cell anomaly detection method and apparatus A respective bipolar junction transistor is coupled across pairs of fuel cells in a fuel cell stack to monitor the voltage across each fuel cell pairs for a drop in voltage below a threshold voltage. A respective optoisolator coupled to each of the transistors produ... | 10/11/2005 |
| 6726850 | Catalytic partial oxidation using staged oxygen addition A multistage catalytic partial oxidation (CPO) process for oxidizing a hydrocarbon feedstream comprising C1-C4 hydrocarbons, with an oxygen-containing feedstream to produce a product comprising CO and H2, also known as synthesis gas ... | 04/27/2004 |
| 6685754 | Method for the production of hydrogen-containing gaseous mixtures A method for the production of a hydrogen-containing gas composition, such as a synthesis gas including hydrogen and carbon monoxide. The molar ratio of hydrogen to carbon monoxide (H2 :CO) in the synthesis gas can be well-controlled to yield a... | 02/03/2004 |
| 6395243 | Catalytic or non-catalytic processes with enriched oxygen as a reactant A method is provided for performing catalytic or non-catalytic processes which uses oxygen supplied from the permeate side of a mixed oxygen ion and electron conducting membrane by means of a sweep gas at an elevated temperature. The sweep gas is formed b... | 05/28/2002 |
| 6254807 | Control of H2 and CO produced in partial oxidation process A process for enhancing H2 or CO production in a partial oxidation reaction by feeding H2 O or CO2 with the feed hydrocarbon and oxygen over a transition metal monolith catalyst such as unsupported Ni monolith or alternati... | 07/03/2001 |
| 6224789 | Process and reactor system for preparation of synthesis gas Process for the preparation of hydrogen and/or carbon monoxide rich gas by catalytic steam reforming of a hydrocarbon feedstock, wherein a first stream of the feedstock is autothermally steam reformed in parallel with a second stream of the feedstock bein... | 05/01/2001 |
| 6162267 | Process for the generation of pure hydrogen for use with fuel cells A process and apparatus are disclosed for the operation of a fuel cell to generate electric power from a feed stream comprising a hydrocarbon or an alcohol. The fuel cell comprises a proton exchange membrane which produces electric power from a hydrogen p... | 12/19/2000 |
| 6159395 | Process and plant for reforming hydrocarbonaceous feedstock The present invention provides a process for the production of a synthesis gas mixture containing carbon oxides and hydrogen from a hydrocarbon feedstock material comprising: providing a reforming zone having a plurality of chambers charged with a catalys... | 12/12/2000 |
| 6129861 | Membrane reactor for producing CO- and CO2 -free hydrogen In a reactor and a method for the conversion of methanol to hydrogen wherein the reactor comprises first and second chambers divided by a membrane which is permeable for hydrogen and CO but not for CO2, the methanol is converted in the first ch... | 10/10/2000 |
| 6123873 | Method for soot-free start-up of autothermal reformers Method for initiating operation of an autothermal reformer including the steps of preparing a hot gas which is rich in hydrogen by contacting a methanol and steam containing feed gas with a methanation catalyst and introducing the hot gas into the autothe... | 09/26/2000 |
| 6077459 | Process and process unit for the preparation of ammonia synthesis gas Process and process unit for the preparation of ammonia synthesis gas from a hydrocarbon feedstock comprising sequentially primary and secondary catalytic steam reforming of the feedstock in a primary heat exchange steam reformer and in a subsequent secon... | 06/20/2000 |
| 6051162 | Process for the generation of a low dew-point, oxygen-free protective atmosphere for the performance of thermal treatments A process for the generation of a protective nitrogen-based atmosphere for the performance of heat treatments of metal articles in three phases, including an initial phase in which a gaseous hydrocarbon feed and an oxidant containing oxygen react on a fir... | 04/18/2000 |
| 6048473 | Process for operating a system for the water vapor reforming of methanol A process for operating a system for water vapor reforming of methanol includes a mixture preparation step for preparing a water vapor/methanol mixture from water and methanol, which mixture is subsequently introduced into a reforming reactor in a quantit... | 04/11/2000 |
| 5929286 | Method for making hydrogen rich gas from hydrocarbon fuel A method of forming a hydrogen rich gas from a source of hydrocarbon fuel in which the hydrocarbon fuel contacts a two-part catalyst comprising a dehydrogenation portion and an oxide-ion conducting portion at a temperature not less than about 400° C. for... | 07/27/1999 |
| 5925328 | Steam reforming process A process for the preparation of ammonia synthesis gas includes supplying a feedstock gas, optionally mixed with a flue gas, to at least one pair of reforming reactors. Each reactor has a process and fuel side and a combustion side. Each pair of reactors ... | 07/20/1999 |
| 5744067 | Production of H2 -rich gas This invention relates to the production of hydrogen-rich gas by the partial oxidation of a saturated gaseous hydrocarbonaceous fuel or a mixture of saturated gaseous hydrocarbonaceous fuel and a liquid hydrocabonaceous fuel in a gas generator. In the pro... | 04/28/1998 |
| 5211880 | Process for the preparation of ammonia synthesis gas A process for the preparation of ammonia synthesis gas by steam reforming and/or partial oxidation of a hydrocarbon feedstock comprises the further steps of catalytically converting a part of the synthesis gas to methanol, liquifying and separating the pr... | 05/18/1993 |
| 5202057 | Production of ammonia synthesis gas Nitrogen is economically recovered from the flue gas evolved in a hydrocarbon steam reforming furnace by hydrogenation of free oxygen therein and removal of carbon dioxide and other minor impurities from the flue gas by pressure swing adsorption with reco... | 04/13/1993 |
| 5122299 | Autothermal steam reforming process Synthesis gases are produced by reaction of steam, oxidant, and a major portion of fresh hydrocarbon feed in an exothermic catalytic reforming zone to a first reformed gas having very low methane content. The balance of the fresh feed is reacted with stea... | 06/16/1992 |
| 5068058 | Production of ammonia synthesis gas A method is disclosed for producing ammonia synthesis gas by splitting a methane stream, combusting a portion of the methane with steam and oxygen-enriched air, converting a second portion of the methane with steam in a reformation heated by the combustio... | 11/26/1991 |
| 5039510 | Steam reforming The endothermic reaction of a hydrocarbon feedstock with steam and/or carbon dioxide is carried out using a double-tube reactor. In one preferred form of the reactor the catalyst is present as a coating on the outside of the inner tube. In another form in... | 08/13/1991 |
| 5011625 | Autothermal steam reforming process Ammonia synthesis gas is produced by reaction of steam, an oxidant, and a major portion of fresh hydrocarbon feed in an exothermic catalytic reforming zone to a first reformed gas having very low methane content. The balance of the fresh feed is reacted w... | 04/30/1991 |
| 5004592 | Steam reforming process The endothermic reaction of a hydrocarbon feedstock with steam and/or carbon dioxide is carried out using a double-tube reactor. In one preferred form of the reactor the catalyst is present as a coating on the outside of the inner tube. In another form in... | 04/02/1991 |
| 4988490 | Adsorptive process for recovering nitrogen from flue gas Nitrogen is economically recovered from the flue gas evolved in a hydrocarbon steam reforming furnace by hydrogenation of free oxygen therein and removal of carbon dioxide and other minor impurities from the flue gas by pressure swing adsorption with reco... | 01/29/1991 |
| 4981669 | Ammonia synthesis gas Ammonia synthesis gas is prepared by primary and secondary reforming followed by shift and carbon oxides removal. So that the process can use naphtha and methane, e.g. natural gas, as alternative feedstocks, at least the initial part of the primary reform... | 01/01/1991 |
