Patents Assigned to Toyo Engineering Corporation
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Patent number: 12247002Abstract: In a urea synthesis process, temperature distribution in a submerged condenser is reduced. The process includes: synthesizing urea from NH3 and CO2 to generate a urea synthesis solution; by heating the solution, decomposing ammonium carbamate and separating a gaseous mixture containing NH3 and CO2 from the solution to obtain a solution higher in urea concentration than the solution obtained in the synthesizing; with use of a submerged condenser including a shell and tube heat exchange structure including a U-tube, absorbing and condensing at least a part of the gaseous mixture in an absorption medium on a shell side, and generating steam on a tube side with use of heat generated during the condensation; and recycling at least a part of liquid, obtained from the shell side, to the synthesizing, wherein water is supplied to the tube side of the condenser at a mass flow rate that is three times or more of the steam generation rate.Type: GrantFiled: March 14, 2019Date of Patent: March 11, 2025Assignee: Toyo Engineering CorporationInventor: Keigo Sasaki
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Patent number: 12128379Abstract: A fluidized bed or fluidized bed/spouted bed granulator into which urea seed particles, an aqueous urea solution and air are introduced to produce urea particles with an average particle size of 1 mm or more. The granulator includes a box-shaped granulation chamber with a bottom floor, a top and side surfaces. Inner wall surfaces of the chamber are of a metal plate material, an upper part of the side or top surfaces includes an exhaust outlet, the side surfaces or top surface includes an inlet for introducing the seed particles, the side surfaces include a collection port for the particles, the aqueous urea solution is introduced from the bottom floor or the side surfaces, the air is introduced from the bottom floor or the bottom floor and the side surfaces, and at least a portion of the inner wall surfaces of the granulation chamber is treated by surface roughening.Type: GrantFiled: February 8, 2021Date of Patent: October 29, 2024Assignee: TOYO ENGINEERING CORPORATIONInventors: Keishi Sano, Genshi Nishikawa, Kimihito Haruta, Katsunori Yagoh, Masashi Takahashi, Yuichiro Wakashima, Keiji Mase, Shozo Ishibashi, Tetsuya Kawabe
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Publication number: 20240344169Abstract: To provide a metal recovery method that has a low environmental impact and that can achieve metal recovery at low cost and with high efficiency. A metal recovery method including: mixing a liquid containing a metal ion with a yeast to adsorb the metal ion by the yeast in the resulting mixed liquid; separating the yeast from the mixed liquid obtained in the adsorption process; and recovering the metal ion from the yeast separated in the separation process, wherein the metal ion to be adsorbed by the yeast in the adsorption process is a rare earth ion and/or a precious metal ion.Type: ApplicationFiled: July 14, 2022Publication date: October 17, 2024Applicants: TOYO ENGINEERING CORPORATION, UNIVERSITY PUBLIC CORPORATION OSAKAInventors: Takuya ISHISAKA, Hiroshi TANAKA, Takaya MINAMI, Yasuhiro KONISHI, Norizou SAITOU
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Publication number: 20240327210Abstract: The present invention provides a radial flow reactor with less uneven temperature even when an endothermic reaction is performed, small pressure loss, and easy maintainability as well, and also provides a method for producing an ammonia decomposition mixture using the same. The reactor according to the present invention is a so-called radial flow reactor having a cylindrical reaction vessel disposed in an upright position and a reaction region inside the reaction vessel, in which a chemical reaction is performed, wherein the reaction region has a catalyst member, having a heating part that generates heat by being energized and a catalyst disposed to be heated by the heating part, which is concentrically disposed in a cross-section perpendicular to an axial direction of the reaction vessel.Type: ApplicationFiled: July 20, 2022Publication date: October 3, 2024Applicant: Toyo Engineering CorporationInventor: Satoshi OKAJIMA
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Patent number: 12055324Abstract: A heat pump has an internal heat-absorbing section that receives heat and an internal heat-releasing section that releases heat. Heat is transferred between the internal heat-absorbing section and the internal heat-releasing section using a magnetic particle dispersion circulating between the internal heat-absorbing section and the internal heat-releasing section. The heat pump may include: an external heat-absorbing section in which a secondary working fluid receives heat from a heat-giving fluid; an external heat-releasing section in which the secondary working fluid releases heat to a heat-receiving fluid; and a circulation channel that allows the secondary working fluid to circulate.Type: GrantFiled: November 1, 2021Date of Patent: August 6, 2024Assignee: TOYO ENGINEERING CORPORATIONInventor: Hiroshi Takase
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Patent number: 12044642Abstract: A device for estimating an outer surface temperature of a radiant coil which is provided in an cracking furnace for ethylene production including a convection coil that preheats hydrocarbons as raw materials and steam, a radiant coil that thermally decomposes the preheated hydrocarbons and steam, and a housing for accommodating them, and which includes an imaging camera that images a region to be imaged of the radiant coil, and an image analyzer that processes an output signal from the imaging camera and estimates an outer surface temperature of the radiant coil.Type: GrantFiled: April 21, 2021Date of Patent: July 23, 2024Assignee: TOYO ENGINEERING CORPORATIONInventors: Kenichi Tominaga, Michiko Nakajo, Noritaka Sakaguchi
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Publication number: 20240200869Abstract: To provide a process for separating hydrocarbons capable of recovering ethane or propane, including improved cold heat recovery enabling a reduction in compressor power.Type: ApplicationFiled: March 1, 2024Publication date: June 20, 2024Applicant: TOYO ENGINEERING CORPORATIONInventors: Keisuke SASAKURA, Taisei YAMAMOTO, Shoichi YAMAGUCHI
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Publication number: 20240035715Abstract: A heat pump has an internal heat-absorbing section that receives heat and an internal heat-releasing section that releases heat. Heat is transferred between the internal heat-absorbing section and the internal heat-releasing section using a magnetic particle dispersion circulating between the internal heat-absorbing section and the internal heat-releasing section. The heat pump may include: an external heat-absorbing section in which a secondary working fluid receives heat from a heat-giving fluid; an external heat-releasing section in which the secondary working fluid releases heat to a heat-receiving fluid; and a circulation channel that allows the secondary working fluid to circulate.Type: ApplicationFiled: November 1, 2021Publication date: February 1, 2024Applicant: TOYO ENGINEERING CORPORATIONInventor: Hiroshi TAKASE
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Patent number: 11878957Abstract: Provided is a novel process and a novel apparatus for urea production capable of performing heat recovery from a relatively low-temperature fluid. A process for urea production includes a synthesis step, a high-pressure decomposition step and a condensation step and includes a) a step of heat-exchanging steam condensate whose temperature is higher than 90° C. with another fluid to cool this steam condensate to 90° C. or less, b) a step of, by heat-exchanging the steam condensate obtained from the step a with a further fluid having a temperature lower than a temperature of the low-pressure steam, heating the steam condensate obtained from the step a, and c) a step of supplying the steam condensate obtained from the step b to the condensation step as the steam condensate for generating the low-pressure steam. An apparatus for performing the process.Type: GrantFiled: June 20, 2019Date of Patent: January 23, 2024Assignee: TOYO ENGINEERING CORPORATIONInventor: Keigo Sasaki
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Publication number: 20230392884Abstract: Heat pump 10 has heat-absorbing section 12 that receives heat from an outside and heat-releasing section 13 that releases heat to the outside, for transferring heat between heat-absorbing section 12 and heat-releasing sectioning 13 by reinforcing and reducing a magnetic field applied to a primary working fluid circulating between heat-absorbing section 12 and heat-releasing section 13, wherein the primary working fluid is magnetic particle dispersion 11 containing magnetic particles 11 dispersed in a dispersion medium.Type: ApplicationFiled: October 14, 2021Publication date: December 7, 2023Applicant: TOYO ENGINEERING CORPORATIONInventors: Hiroshi TAKASE, Masaki TOGO, Toshihiro WAKABAYASHI
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Publication number: 20230358485Abstract: Clamping device 20 is a clamping device for clamping and fixing core 10, whose interior is divided into multiple flow channels F1, F2 by plates 11 that are stacked, of stacked heat exchanger 1 in stacking direction Z of plates 11, including: two end plates 21, 22 placed on both sides of core 10 in stacking direction Z; connecting member 23 connecting two end plates 21, 22 to keep two end plates 21, 22 apart by a distance greater than a length of core 10 in stacking direction Z; and bolts 24 inserted respectively into thread through-holes 21a, 22a formed on each of end plates 21, 22 for pressing core 10 in stacking direction Z.Type: ApplicationFiled: August 26, 2021Publication date: November 9, 2023Applicant: TOYO ENGINEERING CORPORATIONInventors: Takeshi SATO, Satoshi NAGATA, Kenji SAKAI
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Patent number: 11807460Abstract: A chute tube for facilitating particle transfer and distribution. The chute tube for transferring particles has a charging chute tube with a charge inlet of particles, a discharging chute tube and an intermediate chute tube slantingly connected between the charging chute tube and the discharging chute tube. The intermediate chute tube includes a groove without steps formed by a combination of a first inclined surface and a second inclined surface, and the groove is of a cross-sectional shape corresponding to two adjacent sides of a triangle.Type: GrantFiled: May 19, 2020Date of Patent: November 7, 2023Assignee: TOYO ENGINEERING CORPORATIONInventor: Keishi Sano
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Patent number: 11692771Abstract: A process for obtaining a product gas and product LNG having pressure P1 close to the atmospheric pressure from lean LNG, includes: a) branching the lean LNG to obtain a first flow and a second flow; b) cooling the second flow by using a refrigerant; c) branching a liquid flow derived from the cooled second flow to obtain refrigerant LNG and remaining LNG; d) subjecting the remaining LNG to pressure reduction and gas-liquid separation to obtain a gas phase flow and a liquid phase flow (product LNG) having pressure P1; e) subjecting the refrigerant LNG to pressure reduction; f) using a flow from the step e as the refrigerant; g) joining, before or after the step f, the gas phase flow having pressure P1 to a flow from the step e; h) liquefying a flow resulting from the steps f and g by pressure increase and cooling (through heat exchange with the first flow); i) increasing the first flow in pressure before the step h; j) obtaining the product gas by regasifying the first flow after the steps h and i; and k) joiType: GrantFiled: August 12, 2020Date of Patent: July 4, 2023Assignee: TOYO ENGINEERING CORPORATIONInventors: Taisei Yamamoto, Yasuyuki Yamamori
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Publication number: 20230197996Abstract: Redox flow battery 1 include cell frame 20 having recess 21, 22, at least one sheet-like electrode 11, 13 received in recess 21, 22, membrane 15 stacked on cell frame 20 to cover recess 21, 22, and bipolar current collecting member 40 penetrating cell frame 20 at recess 21, 22 and electrically connected to at least one electrode 11, 13, wherein cell frame 20 has flow channels 31-38 communicating with recess 21, 22 so as to allow a fluid containing an active material to flow through recess 21, 22 parallel to membrane 15, and wherein at least one electrode 11, 13 is disposed in recess 21, 22 at an angle where at least one electrode 11, 13 intersects membrane 15.Type: ApplicationFiled: April 23, 2021Publication date: June 22, 2023Applicant: TOYO ENGINEERING CORPORATIONInventor: Takato Nakao
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Patent number: 11498895Abstract: There is provided a process and an apparatus for urea production in which preheating of raw material ammonia or heating in a medium-pressure decomposition step can be performed at a relatively low pressure while preventing decrease in an overall heat transfer coefficient. A process for urea production includes: a synthesis step of generating a urea synthesis solution; a high-pressure decomposition step of heating the urea synthesis solution to separate a gaseous mixture containing ammonia and carbon dioxide from the urea synthesis solution; a condensation step of condensing the gaseous mixture; a medium-low-pressure steam generation step of reducing a pressure of medium-pressure steam condensate obtained in the high-pressure decomposition step to a medium-low pressure to generate medium-low-pressure steam and medium-low-pressure steam condensate; and one or both of a medium-pressure decomposition step and an ammonia preheating step.Type: GrantFiled: July 2, 2019Date of Patent: November 15, 2022Assignee: TOYO ENGINEERING CORPORATIONInventors: Kenji Yoshimoto, Keigo Sasaki
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Patent number: 11465069Abstract: Diabatic distillation column 1 includes first and second cooling devices 11, 12 configured to indirectly cool fluid in rectifying section 2 with a circulating working fluid, first and second heating devices 21, 22 configured to indirectly heat fluid in stripping section 3 with the circulating working fluid, first compressor 31 configured to compress the working fluid from first cooling device 11 on first circulation path P11-P14 between first cooling device 11 and first heating device 21, second compressor 32 configured to compress the working fluid from second cooling device 12 on second circulation path P21-P24 between second cooling device 12 and second heating device 22, first expansion device 41 configured to expand the working fluid from first heating device 21 on first circulation path P11-P14, and second expansion device 42 configured to expand the working fluid from second heating device 22 on second circulation path P21-P24.Type: GrantFiled: November 30, 2018Date of Patent: October 11, 2022Assignee: TOYO ENGINEERING CORPORATIONInventors: Toshihiro Wakabayashi, Masaki Togo
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Patent number: 11408678Abstract: The claimed invention provides a method and an apparatus for separating hydrocarbons, wherein the method and the apparatus are used for separating a hydrocarbon having 3 or more carbon atoms including at least propane (hereinafter sometimes called “C3+ NGL”. NGL: Natural Gas Liquid) from liquefied natural gas (LNG).Type: GrantFiled: October 23, 2018Date of Patent: August 9, 2022Assignee: TOYO ENGINEERING CORPORATIONInventors: Yasuyuki Yamamori, Xiaoxue Zhang
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Publication number: 20220238904Abstract: Redox flow battery includes cell frame 20 including frame body 21 and bipolar plate 23, frame body 21 having rectangular opening 22 divided into a plurality of small openings 22a-22c along first direction X parallel to a longitudinal direction of opening 22, bipolar plate 23 divided into a plurality of regions 23a-23c, each of regions 23a-23c disposed within each of small openings 22a-22c to form a plurality of recesses, and electrode 11 divided into a plurality of regions 11a-11c, each of regions 11a-11c received in each of the recesses, wherein each of small openings 22a-22c has a rectangular shape whose longitudinal direction is parallel to first direction X.Type: ApplicationFiled: May 28, 2020Publication date: July 28, 2022Applicant: TOYO ENGINEERING CORPORATIONInventor: Takato NAKAO
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Publication number: 20220185772Abstract: In a urea synthesis process, temperature distribution in a submerged condenser is reduced. The process includes: synthesizing urea from NH3 and CO2 to generate a urea synthesis solution; by heating the solution, decomposing ammonium carbamate and separating a gaseous mixture containing NH3 and CO2 from the solution to obtain a solution higher in urea concentration than the solution obtained in the synthesizing; with use of a submerged condenser including a shell and tube heat exchange structure including a U-tube, absorbing and condensing at least a part of the gaseous mixture in an absorption medium on a shell side, and generating steam on a tube side with use of heat generated during the condensation; and recycling at least a part of liquid, obtained from the shell side, to the synthesizing, wherein water is supplied to the tube side of the condenser at a mass flow rate that is three times or more of the steam generation rate.Type: ApplicationFiled: March 14, 2019Publication date: June 16, 2022Applicant: TOYO ENGINEERING CORPORATIONInventor: Keigo SASAKI
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Publication number: 20220144763Abstract: Provided is a novel process and a novel apparatus for urea production capable of performing heat recovery from a relatively low-temperature fluid. A process for urea production includes a synthesis step, a high-pressure decomposition step and a condensation step and includes a) a step of heat-exchanging steam condensate whose temperature is higher than 90° C. with another fluid to cool this steam condensate to 90° C. or less, b) a step of, by heat-exchanging the steam condensate obtained from the step a with a further fluid having a temperature lower than a temperature of the low-pressure steam, heating the steam condensate obtained from the step a, and c) a step of supplying the steam condensate obtained from the step b to the condensation step as the steam condensate for generating the low-pressure steam. An apparatus for performing the process.Type: ApplicationFiled: June 20, 2019Publication date: May 12, 2022Applicant: TOYO ENGINEERING CORPORATIONInventor: Keigo SASAKI