公开(公告)号：US20210017105A1

公开(公告)日：2021-01-21

申请号：US16981814

申请日：2019-03-01

Applicant: SHOWA DENKO K.K.

Inventor： Katsumi MIKAMI ,  Yohsuke FUKUCHI ,  Shinya OGURO ,  Hiroshi KOBAYASHI

IPC: C07C17/04 ,  C07C19/01 ,  B01J19/26

Abstract: Provided are a method and an apparatus for producing 1,2,3,4-tetrachlorobutane that are unlikely to lose 3,4-dichloro-1-butene as the material or 1,2,3,4-tetrachlorobutane as the product and can be stably and economically produce 1,2,3,4-tetrachlorobutane. A reaction liquid (1) containing 3,4-dichloro-1-butene is placed in a reaction container (11), then chlorine gas is supplied to a gas phase (2) in the reaction container (11), and the 3,4-dichloro-1-butene is reacted with the chlorine gas to give 1,2,3,4-tetrachlorobutane.

公开(公告)号：US20200346998A1

公开(公告)日：2020-11-05

申请号：US16770115

申请日：2018-11-07

Applicant: SHOWA DENKO K.K.

Inventor： Yohsuke FUKUCHI ,  Shinichi YOROZUYA ,  Nozomi KUSUMOTO ,  Hiroshi KOBAYASHI

IPC: C07C17/10 ,  B01J4/02 ,  B01J10/00 ,  B01J19/00 ,  C07C67/287

Abstract: Provided is a method for producing a fluorine-containing organic compound. The method can immediately detect the occurrence of a side reaction in direct fluorination reaction using fluorine gas and can give a highly pure fluorine-containing organic compound at a high yield. A raw material liquid (1) containing a raw material organic compound having a hydrogen atom and two or more carbon atoms is reacted with fluorine gas in a reaction container (11) to replace the hydrogen atom of the raw material organic compound with a fluorine atom to give a fluorine-containing organic compound. In the reaction, tetrafluoromethane contained in a gas phase (2) in the reaction container (11) is continuously measured, and the amount of the fluorine gas supplied to the reaction container (11) is controlled depending on the measured value of the tetrafluoromethane.

公开(公告)号：US20220234890A1

公开(公告)日：2022-07-28

申请号：US17595873

申请日：2020-08-20

Applicant: SHOWA DENKO K.K.

Inventor： Koki FUJIMURA ,  Hiroshi KOBAYASHI ,  Yohsuke FUKUCHI

IPC: C01B7/20 ,  C01B7/19 ,  C25B1/24

Abstract: A method for producing fluorine gas including a fluorination step of obtaining a reaction mixture containing a major fluorinated substance that is a target component generated by fluorination of a raw material compound and by-product hydrogen fluoride, a separation step of separating the reaction mixture to obtain a main product component containing the major fluorinated substance and a by-product component containing the by-product hydrogen fluoride, a purification step of purifying the by-product component to obtain a recovered hydrogen fluoride component in which a concentration of an organic substance is reduced and a concentration of the by-product hydrogen fluoride is increased, an electrolysis step of performing electrolysis using the recovered hydrogen fluoride component as at least a part of an electrolyte to produce fluorine gas, and an introduction step of introducing the fluorine gas obtained in the electrolysis step into a reaction field for fluorination in the fluorination step.

公开(公告)号：US20170025698A1

公开(公告)日：2017-01-26

申请号：US15286650

申请日：2016-10-06

Applicant: SHOWA DENKO K.K.

Inventor： Toshikazu SHISHIKURA ,  Hiroshi KOBAYASHI

IPC: H01M8/08 ,  H01M4/90 ,  H01M8/0254 ,  H01M8/20 ,  H01M8/18

Abstract: Provided in the present invention is a redox flow battery including a positive electrode, a negative electrode and a separation membrane, wherein a positive electrode electrolyte composed of an aqueous solution containing vanadium ions is supplied into a positive electrode chamber, and a negative electrode electrolyte composed of an aqueous solution containing vanadium ions is supplied into a negative electrode chamber, to carry out charging and discharging of the battery. In the redox flow battery, zirconium or titanium coated with a noble metal or a compound thereof is used as a positive electrode material, and when the positive electrode material is zirconium coated with a noble metal or a compound thereof, the positive electrode electrolyte and the negative electrode electrolyte contain sulfuric acid; and when the positive electrode material is titanium coated with a noble metal or a compound thereof, the positive electrode electrolyte contains nitric acid.

Abstract translation: 本发明中提供的是包含正极，负极和分离膜的氧化还原液流电池，其中将由含有钒离子的水溶液组成的正极电解质供给到正极室中，并且将负极电解质组成 含有钒离子的水溶液供给到负极室，进行电池的充放电。 在氧化还原液流电池中，使用涂覆有贵金属或其化合物的锆或钛作为正极材料，并且当正极材料是用包覆贵金属或其化合物的锆涂覆时，正极电解质和 负极电解液含硫酸; 当正极材料是用贵金属或其化合物钛涂覆时，正极电解质含有硝酸。

公开(公告)号：US20220213605A1

公开(公告)日：2022-07-07

申请号：US17613865

申请日：2020-12-11

Applicant: SHOWA DENKO K.K.

Inventor： Katsumi MIKAMI ,  Yohsuke FUKUCHI ,  Hiroshi KOBAYASHI

IPC: C25B15/023 ,  C25B1/245 ,  C25B15/08 ,  C25B11/043 ,  C25B9/17

Abstract: A method for producing fluorine gas including electrolyzing an electrolyte in an electrolytic cell, measuring the average particle size of a mist contained in a fluid generated in the inside of the electrolytic cell in the electrolyzing the electrolyte, and sending the fluid from the inside to the outside of the electrolytic cell through a flow path. The flow path in which the fluid flows is switched in accordance with the average particle size of the mist measured in the measuring the average particle size, such that the fluid is sent to a first flow path when the average particle size of the mist measured in the measuring the average particle size is not more than a predetermined reference value, or the fluid is sent to a second flow path when the average particle size is more than the predetermined reference value.

公开(公告)号：US20210332487A1

公开(公告)日：2021-10-28

申请号：US16624938

申请日：2018-06-26

Applicant: SHOWA DENKO K.K.

Inventor： Yohsuke FUKUCHI ,  Nozomi INOUE ,  Hiroshi KOBAYASHI

IPC: C25B9/63 ,  C25B1/245 ,  C25B15/08 ,  C25B9/17 ,  C25B1/02

Abstract: An anode mounting member (16) of a fluorine electrolytic cell including: a plurality of stacked annular packings surrounding a sidewall of a cylindrical anode packing gland (14); a cylindrical exterior member (23) surrounding an outer periphery of the packings; and an annular fastening member (24) that fastens the plurality of packings and the exterior member (23) to the anode packing gland (14), wherein among the packings a first ceramic packing (17) is located at an end of the longitudinal direction on an electrolyte tank side, and a second resin packing (18) is adjacent to the first packing (17), central axes of the anode packing gland (14) and the exterior member (23) coincide, an inner diameter (17r) is 0.2 mm to 1.0 mm larger than an outer diameter (14R), and an outer diameter (17R) is 0.2 mm to 1.0 mm smaller than an inner diameter (23r).