Toyo Koatsu Co.

Nishi-Tokyo-shi, Japan

Toyo Koatsu Co.

Nishi-Tokyo-shi, Japan

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Patent
Chugoku Electric Power Co., Hiroshima University and Toyo Koatsu Co. | Date: 2014-03-05

A gasification apparatus heats and pressurizes a gasification feedstock to bring the gasification feedstock into a supercritical state, and performs decomposition-treatment on the gasification feedstock to obtain fuel gas. The gasification apparatus includes a heat exchanger, a gas-liquid separator, and a synthesizer. The heat exchanger introduces the gasification feedstock into a low-temperature-side flow channel and introduces treated fluid in a supercritical state into a high-temperature-side flow channel, so that heat exchange is performed between the gasification feedstock and the treated fluid. The gas-liquid separator extracts, from the high-temperature-side flow channel, the treated fluid that has been in a subcritical state due to heat exchange, performs gas-liquid separation on the treated fluid, and returns a separated liquid to the high-temperature-side flow channel. The synthesizer synthesizes a liquid fuel from fuel gas separated by the gas-liquid separator.


Patent
Chugoku Electric Power Co., Hiroshima University and Toyo Koatsu Co. | Date: 2014-03-05

A gasification apparatus heats and pressurizes a gasification feedstock to bring the gasification feedstock into a supercritical state, and performs decomposition-treatment on the gasification feedstock to obtain fuel gas. The gasification apparatus includes a heat exchanger, a gas-liquid separator, and a turbine. The heat exchanger introduces the gasification feedstock into a low-temperature-side flow channel and introduces treated fluid in a supercritical state into a high-temperature-side flow channel, so that heat exchange is performed between the gasification feedstock and the treated fluid. The gas-liquid separator extracts, from the high-temperature-side flow channel, the treated fluid that has been in a subcritical state due to heat exchange, performs gas-liquid separation on the treated fluid, and returns a separated liquid to the high-temperature-side flow channel. The turbine is powered by fuel gas separated by the gas-liquid separator.


Patent
Chugoku Electric Power Co., Hiroshima University and Toyo Koatsu Co. | Date: 2014-03-05

A gasification system includes a countercurrent type heat exchanger that includes a low-temperature side flow channel through which a gasification feedstock flows, and a high-temperature side flow channel to which treated water in a supercritical state is introduced. The treated water raises a temperature of the gasification feedstock by exchanging heat with the gasification feedstock. The system further includes a reactor that gasifies the gasification feedstock, whose temperature has been raised by the countercurrent type heat exchanger, by heating and pressurizing the gasification feedstock to be in a supercritical state. The reactor discharges the gasification feedstock as treated water in the supercritical state. The system further includes a treated water flow channel that introduces, to the countercurrent type heat exchanger, the treated water that has been discharged from the reactor, and a feedstock introduction port that introduces the feedstock to the low-temperature side flow channel.


Patent
Chugoku Electric Power Co., Hiroshima University and Toyo Koatsu Co. | Date: 2014-03-05

A double tube and the like includes: a cylindrical outer tube; a cylindrical inner tube including a helical protrusion in an outer circumferential surface, the inner tube being provided inside the outer tube; and a helical flow passage forming member that forms a helical flow passage inside the inner tube, the helical flow passage forming member being provided inside the inner tube.


Patent
Chugoku Electric Power Co., Hiroshima University and Toyo Koatsu Co. | Date: 2014-03-05

A heat exchanger includes: a flow passage unit arranged with a plurality of planar flow passage bodies each arranged with two flow passages adjacent to each other in a same plane. The plurality of the planar flow passage bodies are layered in an intersecting direction that intersects with the plane. In two of the planar flow passage bodies adjacent in the intersecting direction of the plurality of the layered planar flow passage bodies, each one of two flow passage ports in both ends of each of the flow passages of one of the planar flow passage bodies is connected to each one of two flow passage ports in both ends of each of the flow passages of another of the planar flow passage bodies. A high-pressure pipe covers an outside of the flow passage unit.


Patent
Chugoku Electric Power Co., Hiroshima University and Toyo Koatsu Co. | Date: 2017-01-11

A heat exchanger includes: a flow passage unit arranged with a plurality of planar flow passage bodies each arranged with two flow passages adjacent to each other in a same plane, the plurality of the planar flow passage bodies being layered in an intersecting direction that intersects with the plane, and in two of the planar flow passage bodies adjacent in the intersecting direction of the plurality of the layered planar flow passage bodies, each one of two flow passage ports in both ends of each of the flow passages of one of the planar flow passage bodies is connected to each one of two flow passage ports in both ends of each of the flow passages of another of the planar flow passage bodies; and a high-pressure pipe that covers an outside of the flow passage unit.


Patent
Chugoku Electric Power Co., Hiroshima University and Toyo Koatsu Co. | Date: 2017-01-11

A double tube and the like includes: a cylindrical outer tube; a cylindrical inner tube including a helical protrusion in an outer circumferential surface, the inner tube being provided inside the outer tube; and a helical flow passage forming member that forms a helical flow passage inside the inner tube, the helical flow passage forming member being provided inside the inner tube.


Patent
Chugoku Electric Power Co., Hiroshima University and Toyo Koatsu Co. | Date: 2017-01-11

[PROBLEM] In a gasification apparatus that heats and pressurizes a gasification feedstock to bring the gasification feedstock into a fluid in a supercritical state and performs decomposition-treatment on the gasification feedstock to obtain fuel gas, energy possessed by the treated fluid can be effectively utilized. [SOLUTION] A gasification apparatus configured to heat and pressurize a gasification feedstock to bring the gasification feedstock into a supercritical state, and perform decomposition-treatment on the gasification feedstock to obtain fuel gas, the gasification apparatus including: a heat exchanger 31 configured to introduce the gasification feedstock into a low-temperature-side flow channel 31a and introduce treated fluid in a supercritical state into a high-temperature-side flow channel 31b, so that heat exchange is performed between the gasification feedstock and the treated fluid; a gas-liquid separator 51 configured to extract, from the high-temperature-side flow channel 31b, the treated fluid that has been in a subcritical state due to heat exchange, perform gas-liquid separation on the treated fluid, and return a separated liquid to the high-temperature-side flow channel 31b; and a synthesis device 52 configured to synthesize a liquid fuel from fuel gas separated by the gas-liquid separator 51.


Patent
Chugoku Electric Power Co., Hiroshima University and Toyo Koatsu Co. | Date: 2017-01-11

[PROBLEM] In a gasification apparatus that heats and pressurizes a gasification feedstock to bring the gasification feedstock into a fluid in a supercritical state and performs decomposition-treatment on the gasification feedstock to obtain fuel gas, energy possessed by the treated fluid is effectively utilized, and production of tar is suppressed. [SOLUTION] A gasification apparatus configured to heat and pressurize a gasification feedstock to bring the gasification feedstock into a supercritical state, and perform decomposition-treatment on the gasification feedstock to obtain fuel gas, the gasification apparatus including: a heat exchanger 31 configured to introduce the gasification feedstock into a low-temperature-side flow channel 31a and introduce treated fluid in a supercritical state into a high-temperature-side flow channel 31b, so that heat exchange is performed between the gasification feedstock and the treated fluid; a gas-liquid separator 51 configured to extract, from the high-temperature-side flow channel 31b, the treated fluid that has been in a subcritical state due to heat exchange, perform gas-liquid separation on the treated fluid, and return a separated liquid to the high-temperature-side flow channel; and a turbine 61 that is powered by fuel gas separated by the gas-liquid separator.


Patent
Chugoku Electric Power Co., Hiroshima University and Toyo Koatsu Co. | Date: 2017-01-11

An object of the present invention is to enhance heat exchange efficiency in a heat exchanger and to gasify a gasification feedstock efficiently. A gasification system 100 including a countercurrent type heat exchanger 30 configured to include a low-temperature side flow channel 36 through which a gasification feedstock flows, and a high-temperature side flow channel 37 to which treated water in a supercritical state is introduced, the treated water raising a temperature of the gasification feedstock, a gasification reactor 50 configured to gasify the gasification feedstock, whose temperature has been raised by the countercurrent type heat exchanger 30, by heating and pressurizing the gasification feedstock to be in a supercritical state, the gasification reactor 50 being configured to discharge the gasification feedstock as treated water in the supercritical state, and a treated water flow channel 55 configured to introduce, to the countercurrent type heat exchanger 30, the treated water that has been discharged from the gasification reactor 50, the gasification feedstock being introduced to the low-temperature side flow channel 36, the gasification system including an external heating means 35 configured to extract the introduced gasification feedstock from the middle of the low-temperature side flow channel 36, heat the extracted gasification feedstock, and return the heated gasification feedstock to a middle position on a feedstock downstream side of the extracted position.

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