Patents by Inventor Fuyuki Yagi
Fuyuki Yagi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10556229Abstract: A lower olefin by using a zeolite catalyst, a composite catalyst capable of further extending the lifetime of catalytic activity, a method for producing the composite catalyst, a method for producing a lower olefin by using the composite catalyst, and a method for regenerating a composite catalyst in the method for producing a lower olefin are provided. The composite catalyst is a catalyst for producing a lower olefin from a hydrocarbon feedstock. This composite catalyst is constituted of a zeolite being a crystalline aluminosilicate containing gallium and iron or iron and further having a framework with 8- to 12-membered ring, and of silicon dioxide. By using the composite catalyst, a lower olefin can be continuously produced over a long period of time.Type: GrantFiled: July 31, 2015Date of Patent: February 11, 2020Assignee: CHIYODA CORPORATIONInventors: Shinya Hodoshima, Fuyuki Yagi, Azusa Motomiya, Shuhei Wakamatsu
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Patent number: 10549267Abstract: Provided are zeolite catalysts that allow reactions to proceed at temperatures as low as possible when lower olefins are produced from hydrocarbon feedstocks with low boiling points such as light naphtha, make it possible to make propylene yield higher than ethylene yield in the production of lower olefins, and have long lifetime. The zeolite catalysts are used in the production of lower olefins from hydrocarbon feedstocks with low boiling points such as light naphtha. The zeolite catalysts are MFI-type crystalline aluminosilicates containing iron atoms and have molar ratios of iron atoms to total moles of iron atoms and aluminum atoms in the range from 0.4 to 0.7. The use of the zeolite catalysts make it possible to increase propylene yield, to lower reaction temperatures, and to extend catalyst lifetime.Type: GrantFiled: May 3, 2019Date of Patent: February 4, 2020Assignee: CHIYODA CORPORATIONInventors: Shinya Hodoshima, Fuyuki Yagi, Azusa Motomiya, Shuhei Wakamatsu, Sachio Asaoka
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Publication number: 20190255516Abstract: Provided are zeolite catalysts that allow reactions to proceed at temperatures as low as possible when lower olefins are produced from hydrocarbon feedstocks with low boiling points such as light naphtha, make it possible to make propylene yield higher than ethylene yield in the production of lower olefins, and have long lifetime. The zeolite catalysts are used in the production of lower olefins from hydrocarbon feedstocks with low boiling points such as light naphtha. The zeolite catalysts are MFI-type crystalline aluminosilicates containing iron atoms and have molar ratios of iron atoms to total moles of iron atoms and aluminum atoms in the range from 0.4 to 0.7. The use of the zeolite catalysts make it possible to increase propylene yield, to lower reaction temperatures, and to extend catalyst lifetime.Type: ApplicationFiled: May 3, 2019Publication date: August 22, 2019Applicant: CHIYODA CORPORATIONInventors: Shinya Hodoshima, Fuyuki Yagi, Azusa Motomiya, Shuhei Wakamatsu, Sachio Asaoka
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Patent number: 10376864Abstract: This invention provides a carrier for a synthesis gas production catalyst that can suppress carbon depositions and allows to efficiently produce synthesis gas on a stable basis for a long duration of time when producing synthesis gas by carbon dioxide reforming. It is a carrier to be used for producing synthesis gas containing carbon monoxide and hydrogen from source gas containing methane-containing light hydrocarbons and carbon dioxide. The carrier contains magnesium oxide grains and calcium oxide existing on the surfaces of magnesium oxide grains. The calcium oxide content thereof is between 0.005 mass % and 1.5 mass % in terms of Ca.Type: GrantFiled: June 5, 2017Date of Patent: August 13, 2019Assignee: CHIYODA CORPORATIONInventors: Fuyuki Yagi, Atsuro Nagumo, Ryuichi Kanai
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Publication number: 20190030515Abstract: This invention provides a carrier for a synthesis gas production catalyst that can suppress carbon depositions and allows to efficiently produce synthesis gas on a stable basis for a long duration of time when producing synthesis gas by carbon dioxide reforming. It is a carrier to be used for producing synthesis gas containing carbon monoxide and hydrogen from source gas containing methane-containing light hydrocarbons and carbon dioxide. The carrier contains magnesium oxide grains and calcium oxide existing on the surfaces of magnesium oxide grains. The calcium oxide content thereof is between 0.005 mass % and 1.5 mass % in terms of Ca.Type: ApplicationFiled: June 5, 2017Publication date: January 31, 2019Applicant: CHIYODA CORPORATIONInventors: Fuyuki Yagi, Atsuro Nagumo, Ryuichi Kanai
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Patent number: 9884998Abstract: A synthesis gas production apparatus (reformer) to be used for a synthesis gas production step in a GTL (gas-to-liquid) process is prevented from being contaminated by metal components. A method of suppressing metal contamination of a synthesis gas production apparatus operating for a GTL process that includes a synthesis gas production step of producing synthesis gas by causing natural gas and gas containing steam and/or carbon dioxide to react with each other for reforming in a synthesis gas production apparatus in which, at the time of separating and collecting a carbon dioxide contained in the synthesis gas produced in the synthesis gas production step and recycling the separated and collected carbon dioxide as source gas for the reforming reaction in the synthesis gas production step, a nickel concentration in the recycled carbon dioxide is not higher than 0.05 ppmv.Type: GrantFiled: June 1, 2016Date of Patent: February 6, 2018Assignees: JAPAN OIL, GAS AND METALS NATIONAL CORPORATION, INPEX CORPORATION, JX NIPPON OIL & ENERGY CORPORATION, JAPAN PETROLEUM EXPLORATION CO., LTD., COSMO OIL CO., LTD., NIPPON STEEL & SUMIKIN ENGINEERING CO., LTD., CHIYODA CORPORATIONInventors: Shuhei Wakamatsu, Fuyuki Yagi, Tomoyuki Mikuriya, Kenichi Kawazuishi
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Patent number: 9821301Abstract: Provided are zeolite catalysts that allow reactions to proceed at temperatures as low as possible when lower olefins are produced from hydrocarbon feedstocks with low boiling points such as light naphtha, make it possible to make propylene yield higher than ethylene yield in the production of lower olefins, and have long lifetime. The zeolite catalysts are used in the production of lower olefins from hydrocarbon feedstocks with low boiling points such as light naphtha. The zeolite catalysts are MFI-type crystalline aluminosilicates containing iron atoms and have molar ratios of iron atoms to total moles of iron atoms and aluminum atoms in the range from 0.4 to 0.7. The use of the zeolite catalysts make it possible to increase propylene yield, to lower reaction temperatures, and to extend catalyst lifetime.Type: GrantFiled: June 7, 2013Date of Patent: November 21, 2017Assignee: CHIYODA CORPORATIONInventors: Shinya Hodoshima, Fuyuki Yagi, Azusa Motomiya, Shuhei Wakamatsu, Sachio Asaoka
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Publication number: 20170282165Abstract: Provided are zeolite catalysts that allow reactions to proceed at temperatures as low as possible when lower olefins are produced from hydrocarbon feedstocks with low boiling points such as light naphtha, make it possible to make propylene yield higher than ethylene yield in the production of lower olefins, and have long lifetime. The zeolite catalysts are used in the production of lower olefins from hydrocarbon feedstocks with low boiling points such as light naphtha. The zeolite catalysts are MFI-type crystalline aluminosilicates containing iron atoms and have molar ratios of iron atoms to total moles of iron atoms and aluminum atoms in the range from 0.4 to 0.7. The use of the zeolite catalysts make it possible to increase propylene yield, to lower reaction temperatures, and to extend catalyst lifetime.Type: ApplicationFiled: June 19, 2017Publication date: October 5, 2017Applicant: CHIYODA CORPORATIONInventors: Shinya Hodoshima, Fuyuki Yagi, Azusa Motomiya, Shuhei Wakamatsu, Sachio Asaoka
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Publication number: 20170252731Abstract: A lower olefin by using a zeolite catalyst, a composite catalyst capable of further extending the lifetime of catalytic activity, a method for producing the composite catalyst, a method for producing a lower olefin by using the composite catalyst, and a method for regenerating a composite catalyst in the method for producing a lower olefin are provided. The composite catalyst is a catalyst for producing a lower olefin from a hydrocarbon feedstock. This composite catalyst is constituted of a zeolite being a crystalline aluminosilicate containing gallium and iron or iron and further having a framework with 8- to 12-membered ring, and of silicon dioxide. By using the composite catalyst, a lower olefin can be continuously produced over a long period of time.Type: ApplicationFiled: July 31, 2015Publication date: September 7, 2017Applicant: CHIYODA CORPORATIONInventors: Shinya HODOSHIMA, Fuyuki YAGI, Azusa MOTOMIYA, Shuhei WAKAMATSU
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Patent number: 9725656Abstract: A synthesis gas production apparatus (reformer) to be used for a synthesis gas production step in a GTL (gas-to-liquid) process is prevented from being contaminated by metal components. A method of suppressing metal contamination of a synthesis gas production apparatus operating for a GTL process that includes a synthesis gas production step of producing synthesis gas by causing natural gas and gas containing steam and/or carbon dioxide to react with each other for reforming in a synthesis gas production apparatus in which, at the time of separating and collecting a carbon dioxide contained in the synthesis gas produced in the synthesis gas production step and recycling the separated and collected carbon dioxide as source gas for the reforming reaction in the synthesis gas production step, a nickel concentration in the recycled carbon dioxide is not higher than 0.05 ppmv.Type: GrantFiled: March 22, 2012Date of Patent: August 8, 2017Assignees: JAPAN OIL, GAS AND METALS NATIONAL CORPORATION, INPEX CORPORATION, JX NIPPON OIL & ENERGY CORPORATION, JAPAN PETROLEUM EXPLORATION CO., LTD., COSMO OIL CO., LTD., NIPPON STEEL & SUMIKIN ENGINEERING CO., LTD., CHIYODA CORPORATIONInventors: Shuhei Wakamatsu, Fuyuki Yagi, Tomoyuki Mikuriya, Kenichi Kawazuishi
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Publication number: 20160272895Abstract: A synthesis gas production apparatus (reformer) to be used for a synthesis gas production step in a GTL (gas-to-liquid) process is prevented from being contaminated by metal components. A method of suppressing metal contamination of a synthesis gas production apparatus operating for a GTL process that includes a synthesis gas production step of producing synthesis gas by causing natural gas and gas containing steam and/or carbon dioxide to react with each other for reforming in a synthesis gas production apparatus in which, at the time of separating and collecting a carbon dioxide contained in the synthesis gas produced in the synthesis gas production step and recycling the separated and collected carbon dioxide as source gas for the reforming reaction in the synthesis gas production step, a nickel concentration in the recycled carbon dioxide is not higher than 0.05 ppmv.Type: ApplicationFiled: June 1, 2016Publication date: September 22, 2016Applicants: JAPAN OIL, GAS AND METALS NATIONAL CORPORATION, INPEX CORPORATION, JX NIPPON OIL & ENERGY CORPORATION, JAPAN PETROLEUM EXPLORATION CO., LTD., COSMO OIL CO., LTD., NIPPON STEEL & SUMIKIN ENGINEERING CO., LTD., CHIYODA CORPORATIONInventors: Shuhei Wakamatsu, Fuyuki Yagi, Tomoyuki Mikuriya, Kenichi Kawazuishi
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Publication number: 20150174565Abstract: Provided are zeolite catalysts that allow reactions to proceed at temperatures as low as possible when lower olefins are produced from hydrocarbon feedstocks with low boiling points such as light naphtha, make it possible to make propylene yield higher than ethylene yield in the production of lower olefins, and have long lifetime. The zeolite catalysts are used in the production of lower olefins from hydrocarbon feedstocks with low boiling points such as light naphtha. The zeolite catalysts are MFI-type crystalline aluminosilicates containing iron atoms and have molar ratios of iron atoms to total moles of iron atoms and aluminum atoms in the range from 0.4 to 0.7. The use of the zeolite catalysts make it possible to increase propylene yield, to lower reaction temperatures, and to extend catalyst lifetime.Type: ApplicationFiled: June 7, 2013Publication date: June 25, 2015Applicant: CHIYODA CORPORATIONInventors: Shinya Hodoshima, Fuyuki Yagi, Azusa Motomiya, Shuhei Wakamatsu, Sachio Asaoka
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Patent number: 9056772Abstract: 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.Type: GrantFiled: February 21, 2011Date of Patent: June 16, 2015Assignees: JAPAN OIL GAS AND METALS NATIONAL CORPORATION, INPEX CORPORATION, JX NIPPON OIL & ENERGY CORPORATION, JAPAN PETROLEUM EXPLORATION CO., LTD., COSMO OIL CO., LTD., NIPPON STEEL ENGINEERING CO., LTD., CHIYODA CORPORATIONInventors: Shinya Hodoshima, Fuyuki Yagi, Shuhei Wakamatsu, Kenichi Kawazuishi
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Patent number: 8832967Abstract: 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.Type: GrantFiled: February 21, 2011Date of Patent: September 16, 2014Assignees: Japan Oil, Gas and Metals National Corporation, Inpex Corporation, JX Nippon Oil & Energy Corporation, Japan Petroleum Exploration Co., Ltd., Cosmo Oil Co., Ltd., Nippon Steel Engineering Co., Ltd., Chiyoda CorporationInventors: Shinya Hodoshima, Fuyuki Yagi, Shuhei Wakamatsu, Kenichi Kawazuishi
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Publication number: 20140021094Abstract: Heavy hydrocarbons contained in FT off gas of a GTL process are removed by bringing the FT off gas into contact with absorption oil, by introducing the FT off gas into a distillation tower, by cooling the FT off gas or by driving the FT off gas into an adsorbent. A burner tip for heating a reformer tube, using FT off gas as fuel, is prevented from being plugged by the deposition of heavy hydrocarbons contained in the FT off gas.Type: ApplicationFiled: March 31, 2011Publication date: January 23, 2014Applicants: JAPAN OIL, GAS AND METALS NATIONAL CORPORATION, INPEX CORPORATION, JX NIPPON OIL & ENERGY CORPORATION, CHIYODA CORPORATION, COSMO OIL CO., LTD., NIPPON STEEL & SUMIKIN ENGINEERING CO., LTD., JAPAN PETROLEUM EXPLORATION CO., LTD.Inventors: Kenichi Kawazuishi, Fuyuki Yagi, Shuhei Wakamatsu, Tomoyuki Mikuriya
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Publication number: 20140018450Abstract: A synthesis gas production apparatus (reformer) to be used for a synthesis gas production step in a GTL (gas-to-liquid) process is prevented from being contaminated by metal components. A method of suppressing metal contamination of a synthesis gas production apparatus operating for a GTL process that includes a synthesis gas production step of producing synthesis gas by causing natural gas and gas containing steam and/or carbon dioxide to react with each other for reforming in a synthesis gas production apparatus in which, at the time of separating and collecting a carbon dioxide contained in the synthesis gas produced in the synthesis gas production step and recycling the separated and collected carbon dioxide as source gas for the reforming reaction in the synthesis gas production step, a nickel concentration in the recycled carbon dioxide is not higher than 0.05 ppmv.Type: ApplicationFiled: March 22, 2012Publication date: January 16, 2014Applicants: JAPAN OIL, GAS AND METALS NATIONAL CORPORATION, INPEX CORPORATION, JX NIPPON OIL & ENERGY CORPORATION, CHIYODA CORPORATION, COSMO OIL CO., LTD., NIPPON STEEL & SUMIKIN ENGINEERING CO., LTD., JAPAN PETROLEUM EXPLORATION CO., LTD.Inventors: Shuhei Wakamatsu, Fuyuki Yagi, Tomoyuki Mikuriya, Kenichi Kawazuishi
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Patent number: 8354456Abstract: 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.Type: GrantFiled: March 25, 2009Date of Patent: January 15, 2013Assignees: Japan Oil, Gas and Metals National Corporation, Inpex Corporation, JX Nippon Oil & Energy Corporation, Japan Petroleum Exploration Co., Ltd., Cosmo Oil Co., Ltd., Nippon Steel Engineering Co., Ltd., Chiyoda CorporationInventors: Fuyuki Yagi, Kenichi Kawazuishi
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Patent number: 8338495Abstract: 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.Type: GrantFiled: September 18, 2008Date of Patent: December 25, 2012Assignees: Japan Oil, Gas and Metals National Corporation, Inpex Corporation, Nippon Oil Corporation, Japan Petroleum Exploration Co., Ltd., Cosmo Oil Co., Ltd., Nippon Steel Engineering Co., Ltd., Chiyoda CorporationInventors: Fuyuki Yagi, Kenichi Kawazuishi
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Publication number: 20120317833Abstract: 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.Type: ApplicationFiled: February 21, 2011Publication date: December 20, 2012Applicants: JAPAN OIL, GAS AND METALS NATIONAL CORPORATION, INPEX CORPORATON, JX NIPPON OIL & ENERGY CORPORATION, CHIYODA CORPORATION, COSMO OIL CO., LTD., NIPPON STEEL ENGINEERING CO., LTD., JAPAN PETROLEUM EXPLORATION CO., LTD.Inventors: Shinya Hodoshima, Fuyuki Yagi, Shuhei Wakamatsu, Kenichi Kawazuishi
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Publication number: 20120316252Abstract: 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.Type: ApplicationFiled: February 21, 2011Publication date: December 13, 2012Applicants: JAPAN OIL, GAS AND METALS NATIONAL CORPORATION, INPEX CORPORATON, JX NIPPON OIL & ENERGY CORPORATION, CHIYODA CORPORATION, COSMO OIL CO., LTD., NIPPON STEEL ENGINEERING CO., LTD., JAPAN PETROLEUM EXPLORATION CO., LTD.Inventors: Shinya Hodoshima, Fuyuki Yagi, Shuhei Wakamatsu, Kenichi Kawazuishi