| NIPPON STEEL ENGINEERING CO., LTD. Patent applications |
| Patent application number | Title | Published |
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| 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 |
