NIPPON STEEL ENGINEERING CO., LTD. Patent applications |
Patent application number | Title | Published |
20140322095 | METHOD FOR RECOVERING HYDROCARBON COMPOUNDS AND A HYDROCARBON RECOVERY APPARATUS FROM A GASEOUS BY-PRODUCT - There is provided a method for recovering hydrocarbon compounds from gaseous by-products generated in a Fischer-Tropsch synthesis reaction. The method includes absorbing light hydrocarbon compounds and a carbon dioxide gas from the gaseous by-products using an absorption solvent including liquid hydrocarbon compounds and a carbon dioxide gas absorbent, separating the absorption solvent which has absorbed the light hydrocarbon compounds and the carbon dioxide gas into the liquid hydrocarbon compounds and the carbon dioxide gas absorbent, heating the separated liquid hydrocarbon compounds to recover the light hydrocarbon compounds from the separated liquid hydrocarbon compounds, heating the separated carbon dioxide gas absorbent to strip the carbon dioxide gas from the separated carbon dioxide gas absorbent, and reusing the gaseous by-products from which the light hydrocarbon compounds and the carbon dioxide gas are absorbed as a feedstock gas for the Fischer-Tropsch synthesis reaction. | 10-30-2014 |
20140250946 | METHOD FOR RECOVERING HYDROCARBON COMPOUNDS AND A HYDROCARBON RECOVERY APPARATUS FROM A GASEOUS BY-PRODUCT - There is provided a method for recovering hydrocarbon compounds from a gaseous by-products generated in the Fisher-Tropsch synthesis reaction, the method comprising a pressurizing step in which the gaseous by-products are pressurized, a cooling step in which the pressurized gaseous by-products are pressurized to liquefy hydrocarbon compounds in the gaseous by-products, and a separating step in which the hydrocarbon compounds liquefied in the cooling step are separated from the remaining gaseous by-products. | 09-11-2014 |
20130171707 | ALCOHOLIC FERMENTATION YEAST AND METHOD FOR PRODUCING ETHANOL USING SAME - [Problem] To provide an alcoholic fermentation yeast having resistance to limonene, which is a fermentation inhibitor, and a method for producing ethanol using the alcoholic fermentation yeast. [Solution] An alcoholic fermentation yeast | 07-04-2013 |
20120317833 | METHOD FOR REMOVING SULFUR COMPOUNDS IN CASTABLE - A situation where sulfur compounds originating from a castable are mixed into synthesis gas produced by way of a reforming reaction and the mixed sulfur compounds are separated and collected with carbon dioxide and further fed into a reformer to thereby degrade the reforming catalyst of the reformer by sulfur poisoning is avoided. Purge gas that is steam or steam-containing gas is made to flow into the piping to be used for a synthesis gas production apparatus and dried out to remove the sulfur compounds contained in the castable prior to the start-up of operation of the synthesis gas production apparatus, in order to prevent the sulfur compounds from being released by hot synthesis gas. | 12-20-2012 |
20120316252 | METHOD FOR PRODUCING SYNTHESIS GAS - It is avoided that the sulfur compounds originating from the castable is mixed into produced synthesis gas, the mixed sulfur compounds are separated and collected with carbon dioxide, the collected carbon dioxide is recycled as raw material gas and then the sulfur compounds is directly supplied to the reformer to consequently degrade the reforming catalyst in the reformer by sulfur poisoning. The carbon dioxide separated and collected in the carbon dioxide removal step is introduced into the desulfurization apparatus of the desulfurization step or the sulfur compounds adsorption apparatus before being recycled to the reformer to remove the sulfur compounds. | 12-13-2012 |
20120183801 | FRICTION-JOINING STEEL PLATE AND FRICTION-JOINING STRUCTURE - The invention provides a friction joining structure comprising steel products, a friction joining steel plate inserted there between, and a fastening device, which are mutually friction joined by a compressive force derived from the fastening device. A portion of projected streaks on the friction joining steel plate is designed to have a Vickers hardness at least 3 times greater than the surface of the steel products, which allows the projected streaks to more easily enter the steel products thereby increasing the friction coefficient between the steel products. The friction joining structure is constituted by a slip resistance mechanism which can be easily validated from a theoretical or an experimental point of view and is also small in variance of the friction coefficient. Therefore, a friction coefficient used in design can be set at a high value with high accuracy to realize a rational design. | 07-19-2012 |
20120181140 | LOADING DEVICE - A charging device capable of moving a distribution chute with a simple structure and easy control is provided. The charging device includes: a frame; a rotation axis set in the frame; a rotor supported by the frame and being rotatable around the rotation axis; an adjustment axis set in the rotor and intersecting with the rotation axis at a first angle; a holder supported by the rotor and being rotatable around the adjustment axis; a distribution chute fixed to the holder and extending in a direction intersecting with the adjustment axis at a second angle; a rotation drive motor fixed to the frame and rotating the rotor against the frame; a transmission-side bevel gear supported by the frame and being rotatable around the rotation axis; a holder-side bevel gear fixed to the holder and being meshed with the transmission-side bevel gear; and an adjustment drive motor fixed to the frame and rotating the holder against the rotor by rotating the transmission-side bevel gear. | 07-19-2012 |
20120144644 | METHOD OF DEMOLISHING FURNACE OF MULTILAYERED-REFRACTORY STRUCTURE - A method for dismantling a furnace having a multilayered refractory structure including: a furnace shell; a containing layer that is formed of a containing refractory that contains asbestos, and covers the inner side of the furnace shell; and a multilayered non-containing layer that is formed of a non-containing refractory that contains no asbestos, and covers the inner side of the containing layer, the method includes: a primary dismantling process; and a secondary dismantling process conducted after the primary dismantling process. In the primary dismantling process, the non-containing layer is dismantled from a furnace-core side thereof but the containing layer and at least one layer of the layers forming the non-containing layer, which is in contact with the containing layer, are left as a remnant. In the secondary dismantling process, the remnant is dismantled while asbestos measures are implemented. | 06-14-2012 |
20120037261 | STEEL PIPE PILE AND METHOD OF INSTALLING THE STEEL PIPE PILE - To provide a steel pipe pile capable of ensuring pile bearing capacity without disturbing the surrounding ground during installation. Characterized by comprising a first steel pipe pile | 02-16-2012 |
20120010304 | Method and System for Synthesizing Liquid Hydrocarbon Compounds - Provided is a method for synthesizing liquid hydrocarbon compounds wherein synthesizing liquid hydrocarbon compounds from a synthesis gas by a Fisher-Tropsch synthesis reaction. The method includes a first absorption step of absorbing a carbon dioxide gas, which is contained in gaseous by-products generated in the Fisher-Tropsch synthesis reaction, with an absorbent, and a second absorption step of absorbing a carbon dioxide gas, which is contained in the synthesis gas, with the absorbent which is passed through the first absorption step. | 01-12-2012 |
20110015282 | PRODUCTION METHOD OF LIQUID HYDROCARBONS FROM NATURAL GAS - In a so-called GTL process for producing liquid hydrocarbons containing fuel oil by producing synthesis gas from natural gas, subsequently producing Fischer-Tropsch oil from the obtained synthesis gas by way of Fischer-Tropsch synthesis and upgrading the produced Fischer-Tropsch oil, the synthesis gas produced from a synthesis gas production step is partly branched at a stage prior to getting to a Fischer-Tropsch oil production step and high-purity hydrogen is separated and produced from the synthesis gas entering the branch line. All the separated high-purity hydrogen is supplied to an upgrading reaction step and consumed as hydrogen for an upgrading reaction. Additionally, the synthesis gas entering the branch line is subjected to a water gas shift reaction to raise the hydrogen concentration before the step of separating and producing high-purity hydrogen and the residual gas left after the separation may be circulated to the synthesis gas production step as raw material for producing synthesis gas. | 01-20-2011 |
20110003900 | PRODUCTION METHOD OF LIQUID HYDROCARBONS FROM NATURAL GAS - In a so-called GTL process of producing synthesis gas from natural gas, producing Fischer-Tropsch oil by way of Fischer-Tropsch synthesis of the obtained synthesis gas and producing liquid hydrocarbons containing fuel oil by upgrading, the synthesis gas produced from the synthesis gas production step is partly branched off prior to getting to the Fischer-Tropsch oil production step and the synthesis gas entering the branch line is subjected to a water gas shift reaction to raise the hydrogen concentration thereof. Subsequently, high-purity hydrogen is isolated from the synthesis gas and the residual gas left after the isolation is circulated to the synthesis gas production step and used as raw material for synthesis gas production. As a result, a significant improvement can be achieved in terms of raw material consumption per product of the entire process. | 01-06-2011 |
20100197814 | METHOD FOR EFFICIENT USE OF HEAT FROM TUBULAR REFORMER - In a GTL process of producing various kinds of hydrocarbon oils from natural gas, provided is improved heat efficiency in the case of using a steam reforming process or a carbon dioxide reforming process in the reforming. The process includes producing a synthesis gas by converting the natural gas and at least one of steam and carbon dioxide into a synthesis gas through a tubular reformer filled with a reforming catalyst, producing Fischer-Tropsch oil by subjecting the produced synthesis gas to a Fischer-Tropsch reaction, and upgrading in which the Fischer-Tropsch oil is subjected to hydrotreatment and distillation to produce various kinds of hydrocarbon oils, in which excess heat generated in the synthesis gas production is recovered, and the recovered heat is used as heat for at least one of hydrotreatment and distillation in the upgrading. | 08-05-2010 |
20090220389 | BUBBLE COLUMN-TYPE FISCHER-TROPSCH SYNTHESIS SLURRY BED REACTION SYSTEM - A bubble column-type slurry bed reaction system is provided in which an operating system, which synthesizes liquid hydrocarbons by the Fischer-Tropsch (FT) synthesis reaction and separates and derives a catalyst and liquid hydrocarbon products from a slurry composed of gas, liquid and solid phases, can be simplified, and deterioration of catalyst particles caused by attrition and so forth can be reduced. In this FT synthesis reaction system, a bubble column-type slurry bed Fischer-Tropsch synthesis reaction process, in which synthesis gas supplied continuously from the bottom of a reactor and suspended catalyst particles are contacted to form liquid hydrocarbons, gaseous hydrocarbons and water, a process in which a slurry of suspended liquid products formed in the Fischer-Tropsch synthesis reaction process and catalyst particles moves from the reactor to the lower portion of a separation vessel through a downwardly inclined transfer pipe to separate the catalyst particles and gaseous products, a process in which the liquid products formed in the Fischer-Tropsch synthesis reaction process is sent to the separation vessel through a horizontal connecting pipe installed above the downwardly inclined transfer pipe and derived from its apex, a process in which liquid products are derived from the separation vessel, and a process in which a | 09-03-2009 |
20090206529 | Hearth Carriage Coupling Structure of Rotary Furnace Hearth - A rotary furnace hearth wherein a hearth carriage carrying a hearth comprises a plurality of hearth carriages respectively having propulsion systems, wherein adjoining hearth carriages are coupled by coupling bolts and nuts via spacers interspaced in a single row in a horizontal plane, whereby even if the hearth carriages deform due to heat at the time of operation, they are structured to be able to freely deform without mutual constraint in the event of curved deformation, so the hearth carriages are maintained in individually stable states at all times. | 08-20-2009 |
20080222975 | SLIDING-TYPE LAMINATED PLATE BEARING AND STRUCTURE - The sliding-type laminated plate bearing is provided with a laminated portion at which a plurality of hard rigid members and a plurality of soft elastic members are laminated alternately in a state of being wholly or partially non-adhesive, a first smooth member of which the surface is made smooth and which is in contact at least with either end face of the laminated portion in the laminated direction, and a second smooth member which is in contact with the first smooth member and which is installed so as to be slidable with respect to the first smooth member. | 09-18-2008 |