公开(公告)号：US20240117531A1

公开(公告)日：2024-04-11

申请号：US18275326

申请日：2022-02-01

Applicant: TEIJIN LIMITED

Inventor： Yoshinori SUZUKI ,  Hiroaki ZUSHI ,  Jun-ichi SUGIYAMA

IPC: D01F9/32 ,  F27D11/12

CPC classification number: D01F9/32 ,  F27D11/12 ,  D10B2101/12 ,  F27D2003/0057

Abstract: The present invention provides a microwave heating unit formed by comprising: a furnace body in which a fiber inlet and a fiber outlet are formed in a tube wall of a waveguide; and a microwave oscillator which guides microwaves into the waveguide. The microwave heating unit is characterized in that: continuous fibers to be heated are configured to have an inclination of an angle θ° with respect to the tube shaft of the waveguide and to travel therein; the angle θ° is 0.

公开(公告)号：US20240084482A1

公开(公告)日：2024-03-14

申请号：US18147870

申请日：2022-12-29

Applicant: Hyundai Motor Company ,  Kia Corporation ,  Ulsan National Institute of Science and Technology

Inventor： Seo Hyun Yoon ,  Han Gi Chae ,  Chang Beom Jeon ,  Hye Jin Ju

IPC: D01D1/02 ,  D01D5/06 ,  D01F9/24 ,  D01F9/32

CPC classification number: D01D1/02 ,  D01D5/06 ,  D01F9/24 ,  D01F9/328

Abstract: Proposed is a method of manufacturing a carbon precursor fiber for a gas diffusion layer having excellent tensile properties (e.g., strength and modulus) by controlling the cross-sectional shape of carbon fiber. The method includes preparing a polyacrylonitrile-based copolymer, preparing spinning products by spinning a spinning solution containing the polyacrylonitrile-based copolymer in a coagulation bath, and obtaining a carbon precursor fiber by drawing the spinning products through heat treatment. The coagulation bath includes an amount of about 60% to 90% by volume of methanol and an amount of about 10% to 40% by volume of dimethylformamide based on the total volume of the coagulation bath.

公开(公告)号：US20230193522A1

公开(公告)日：2023-06-22

申请号：US17911776

申请日：2021-03-15

Applicant: Toray Industries, Inc.

Inventor： Takuya Kataoka ,  Naoto Hosotani ,  Takamitsu Hirose ,  Yusuke Kuji

IPC: D01F9/21 ,  D01F9/32 ,  F27B9/04 ,  F27B9/40 ,  F27D7/02

CPC classification number: D01F9/21 ,  D01F9/32 ,  F27B9/047 ,  F27B9/40 ,  F27D7/02 ,  F27D2007/023

Abstract: A method for manufacturing a carbon fiber bundle includes a stabilization process of subjecting an acrylic fiber bundle to a heat treatment within a range of 200° C. to 300° C. in an oxidizing atmosphere; a pre-carbonization process of performing a heat treatment within a range of 300° C. to 1,000° C. using a heat treatment furnace having at least one inert gas supply port on each of an incoming side and an outgoing side of the fiber bundle and at least one exhaust port between the incoming-side and outgoing-side inert gas supply ports, the heat treatment being performed with a temperature of an inert gas supplied being higher on the outgoing side than on the incoming side; and a carbonization process of performing a heat treatment at a temperature of 1,000° C. to 2,000° C. in an inert gas atmosphere, in which from a position at which an atmospheric temperature in the heat treatment furnace is 300° C., the position being closest to the outgoing side in a machine length direction, up to the inert gas supply port on the incoming side, a flow of an inert atmosphere within the heat treatment furnace in the pre-carbonization process consists only of a flow in a parallel flow direction with respect to a travel direction of the fiber bundle in the machine length direction. Provided is a method for manufacturing a carbon fiber bundle by which manufacturing can be performed continuously for a long time by preventing entry into a temperature zone causing deposition of a gasified decomposition product, such as tar, that is generated at the time of the pre-carbonization treatment in manufacturing of carbon fibers and that stays within the heat treatment furnace.

公开(公告)号：US11598029B2

公开(公告)日：2023-03-07

申请号：US16794658

申请日：2020-02-19

Applicant: TEIJIN LIMITED

Inventor： Yosuke Nakamura ,  Fumio Akiyama

IPC: D01F9/14 ,  D01F9/22 ,  D02J1/08 ,  D01F6/18 ,  D02J13/00 ,  D06M11/78 ,  B29C65/00 ,  B29C65/78 ,  B65H69/06 ,  D01F9/32 ,  D06M101/28 ,  D06M101/40

Abstract: A manufacturing method and an apparatus enable high productivity. A method for manufacturing an oxidized fiber bundle includes joining an upstream precursor fiber bundle and a downstream precursor fiber bundle together with a joining fiber bundle, and oxidizing the joined precursor fiber bundles by feeding the joined precursor fiber bundles through an oxidization furnace. The joining includes applying an oiling agent to a joint area of a joining target precursor fiber bundle before joining the joining target precursor fiber bundle and the joining fiber bundle together. A quantity of the oiling agent adhering to the joint area is 0.15 to 0.85 wt %.

公开(公告)号：US20220162776A1

公开(公告)日：2022-05-26

申请号：US17438127

申请日：2020-01-29

Applicant: Toray Industries, Inc.

Inventor： Naoto Hosotani ,  Taku Yamamoto ,  Kazuyuki Gondo ,  Shigeki Chieda ,  Toru Nishikawa ,  Fumiyasu Nomura

IPC: D01F9/32 ,  D01F9/21

Abstract: There is provided an oxidation heat treatment oven including a heat treatment chamber configured to heat-treat a fiber bundle that is an aligned acrylic fiber bundle in an oxidizing atmosphere to form an oxidized fiber bundle; a slit-shaped opening configured to take the fiber bundle in and out of the heat treatment chamber; guide rollers installed at both ends of the heat treatment chamber and configured to turn the fiber bundle back; a hot air supply nozzle that has a longitudinal axis along the width of the fiber bundle traveling and that blows out hot air, in a direction substantially parallel to a traveling direction of the fiber bundle, above and/or below the fiber bundle traveling in the heat treatment chamber; and a suction nozzle configured to suck the hot air blown out from the hot air supply nozzle, in which the hot air supply nozzle satisfies disclosed conditions (1) to (3).

公开(公告)号：US20210222331A1

公开(公告)日：2021-07-22

申请号：US16755286

申请日：2018-10-12

Applicant: ONEJOON GMBH

Inventor： Lars Meinecke

IPC: D01F9/32 ,  F27D1/18

Abstract: The invention relates to a furnace for the treatment of material, in particular for the oxidative treatment of fiber material, in particular for producing carbon fibers, comprising a housing (12) having, a housing inner space (14), which is gas-tight with the exceptions of passage areas (18, 20) for the fibers (22), In the housing hiller space (14) of the housing (12), a process chamber (28) is located. A hot working atmosphere (40) can be generated by means of an atmosphere device (42). The atmosphere device (42) comprises a flow system (46) having flow channels (48), which are arranged in the housing inner space (14) each defining, one flow chamber (50), and are provided with flow passages such that the respective flow chambers (50) are fluidically connected to the process chamber (28) in such a way that hot working atmosphere (40) can he delivered to the process chamber (28) in at least one main flow direction (44) and can be discharged from the process chamber (28). A revision system (72) is provided, through which flow chambers (50) of flow channels (48) are accessible through the housing (12).

公开(公告)号：US10975501B2

公开(公告)日：2021-04-13

申请号：US15743793

申请日：2016-07-14

Applicant: Mitsubishi Chemical Corporation

Inventor： Manabu Yamatani ,  Tomoyuki Kotani ,  Tomoyoshi Yamashita ,  Kazunao Hareyama

IPC: D01F9/22 ,  C01B32/05 ,  D01F9/127 ,  D01F9/32 ,  D01F9/21

Abstract: A method for producing a carbon material, the method including a step of performing a carbonization treatment by heating an organic polymer material to a temperature higher than 400° C. in a non-oxidizing atmosphere containing a gaseous substance (A) composed of at least one of acetylene and an acetylene derivative.

公开(公告)号：US20210054540A1

公开(公告)日：2021-02-25

申请号：US16612261

申请日：2018-03-08

Applicant: Toray Industries, Inc.

Inventor： Kosuke Taki ,  Hiroomi Ueda ,  Hiroyuki Konishi

IPC: D01F9/32 ,  D01F9/22

Abstract: A carbon fiber production method includes a carbon fiber production step including an oxidation step and a carbonization step; and an exhaust gas processing step including a heat exchange step; an external air mixing step; and a mixed external air supplying step in which the mixed external air is supplied to at least one step that uses heated gas in the steps in the carbon fiber production step; and among the exhaust gases, a high heating value exhaust gas having a heating value of 250 kcal/Nm3 or higher is supplied to an inlet side of an exhaust gas combustion apparatus and a low heating value exhaust gas having a heating value lower than 150 kcal/Nm3 is supplied to an outlet side of the exhaust gas combustion apparatus, respectively.

公开(公告)号：US20210048249A1

公开(公告)日：2021-02-18

申请号：US17046343

申请日：2019-03-29

Applicant: ONEJOON GMBH

Inventor： Matthias Muck

IPC: F27B9/10 ,  D01F9/32 ,  F27B9/28

Abstract: A furnace for the thermal treatment, particularly for carbonization and/or graphitization, of material, particularly of fibers, particularly of fibers made from oxidized polyacrylonitrile (PAN), the furnace having a furnace housing and a process chamber located in the interior chamber of the furnace housing, which is delimited by a process chamber housing and into which the material to be treated can be introduced. A process chamber atmosphere prevailing in the process chamber can be heated by means of a heating system. An insulation layer thermally insulates the process chamber. The insulation layer is an insulation fill made from a solid particulate material.

公开(公告)号：US20210047568A1

公开(公告)日：2021-02-18

申请号：US17016875

申请日：2020-09-10

Applicant: TerraPower, LLC

Inventor： Benjamin L. Goodrich ,  Joshua C. Walter

IPC: C10G1/02 ,  D01F9/32 ,  D01F9/15 ,  C10G1/00 ,  C10B21/08 ,  C10B57/08 ,  C10B57/02 ,  C10B57/14 ,  C10B33/02

Abstract: Examples of a flexible pyrolysis system are provided that include at least one reaction chamber capable of pyrolyzing a combination of coal in a supercritical carbon dioxide (CO2) atmosphere. The system includes a recuperating and condensing circuit that removes dissolved pyrolysis products from the supercritical CO2 atmosphere and then recovers CO2 for reuse in the reaction chamber. The recuperating and condensing circuit includes multiple stages of recuperators and collectors that can be independently controlled in order to selectively fractionate the pyrolysis products. In addition, the pyrolysis reaction may be controlled to alter the pyrolysis products generated.