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1. 发明专利

AU5109800A Digestion method for pulp 未知
公开(公告)号：AU5109800A
公开(公告)日：2001-01-02
申请号：AU5109800
申请日：2000-06-13
申请人： KAWASAKI KASEI CHEMICALS , JUJO PAPER CO LTD , ASAHI GLASS CO LTD
发明人： ANDOH TATSUYA , TANAKA JUNJI , WATANABE KEIGO , NANRI YASUNORI , NAKAO MAKOTO
IPC分类号： D21C3/02 , D21C3/22 , D21C3/00
摘要： A lignocellulose material is cooked by means of an alkaline cooking liquor containing polysulfides in the presence of a quinone-hydroquinone compound, of which the oxidation-reduction potential in the form present during the cooking, which potential is a value calculated as a standard oxidation-reduction potential (Ea) with a hydrogen ion activity of 1, is within a range of from 0.12 to 0.25V to the standard hydrogen electrode potential. It is thereby possible to cook the lignocellulose material with a low Kappa number and in good yield and at the same time, to reduce the amount of the chemical solution used and to reduce the load on a recovery boiler.

2. 发明专利

IN155085B ALKALI METAL CHLORIDE ELECTROLYZING CELL 未知
公开(公告)号：IN155085B
公开(公告)日：1984-12-29
申请号：IN1263CA1981
申请日：1981-11-13
申请人： ASAHI GLASS CO LTD
发明人： SATO KIMIHIKO , SAJIMA YASUO , NAKAO MAKOTO , IWAMOTO JUNJIRO
IPC分类号： C25B1/46 , B01J20060101 , C25B1/16 , C25B9/19 , C25B13/02 , H01M35/00
摘要： A cation exchange membrane having gas- and liquid-permeable inactive porous layers on at least one surface is interposed between an anode and a cathode. At least one of the anode and cathode is a flexible pored electrode having a larger rigidity than that of the cation exchange membrane. The flexible extrode is deformed by an electric conductive support, so that the flexible electrode comes in close contact with the other electrode through the cation exchange membrane. An alkali hydroxide is produced with a lower potential in a diaphragm process.

3. 发明专利

FI813481L 未知
公开(公告)号：FI813481L
公开(公告)日：1982-05-16
申请号：FI813481
申请日：1981-11-04
申请人： ASAHI GLASS CO LTD
发明人： SATO KIMIHIKO , SAJIMA YASUO , NAKAO MAKOTO , IWAMOTO JUNJIRO
IPC分类号： C25B9/19 , C25B
摘要： An alkali metal chloride-electrolyzing cell comprises a cation-exchange membrane disposed between an anode and a cathode, characterized in that said cation-exchange membrane has on at least one side thereof a gas- and liquid-permeable, porous layer with no electrode activity, and at least one of an anode and a cathode is a voided flexible electrode having a more rigidity than that of said cation-exchange membrane, and said flexible electrode is designed to be forcibly deformed thereby closely contacting said cation-exchange membrane with the surface of each of said electrodes.

4. 发明专利

FI72150B 未知
公开(公告)号：FI72150B
公开(公告)日：1986-12-31
申请号：FI813481
申请日：1981-11-04
申请人： ASAHI GLASS CO LTD
发明人： SATO KIMIHIKO , SAJIMA YASUO , NAKAO MAKOTO , IWAMOTO JUNJIRO
IPC分类号： C25B9/19 , C25B13/02 , C25B9/00
摘要： An alkali metal chloride-electrolyzing cell comprises a cation-exchange membrane disposed between an anode and a cathode, characterized in that said cation-exchange membrane has on at least one side thereof a gas- and liquid-permeable, porous layer with no electrode activity, and at least one of an anode and a cathode is a voided flexible electrode having a more rigidity than that of said cation-exchange membrane, and said flexible electrode is designed to be forcibly deformed thereby closely contacting said cation-exchange membrane with the surface of each of said electrodes.

5. 发明专利

DE69122415T2 未知
公开(公告)号：DE69122415T2
公开(公告)日：1997-02-13
申请号：DE69122415
申请日：1991-02-13
申请人： ASAHI GLASS CO LTD
发明人： NAKAO MAKOTO , HIDENORI SHIBATA , TAKEO AIKAWA , TAKAHIRO UCHIBORI , HIROKI YANO
IPC分类号： C25B9/20 , C25B11/03 , C25B9/00
摘要： A monopolar ion exchange membrane electrolytic cell assembly comprising a plurality of unit electrolytic cells connected electritically in parallel to one another, each formed by clamping an anode compartment frame and a cathode compartment frame with an ion exchange membrane interposed therebetween, the anode and cathode compartment frames each having a feeding and discharging system for an electrolyte and a discharging system for generated gas, wherein: (a) an anode is made of a foraminous plate fixed to the anode compartment frame so that it is close to or in contact with the ion exchange membrane, and electricity is supplied to the foraminous plate via power supply rods and/or power supply ribs from a power source located outside the cell, (b) a cathode is made of flexible foraminous metal plate having good conductivity with an electric resistance at 20 DEG C of not higher than 10 mu OMEGA .cm so that the cathode itself has a current collecting function, and one peripheral end thereof is extended outward from the cell to conduct the electricity to the exterior of the cell, and, preferably, (c) the flexible foraminous cathode plate is pressed by a resilient member from the side opposite to the side facing the ion exchange membrane, whereby the flexible cathode plate is deflected so that the cathode is close to or in contact with the ion exchange membrane.

6. 发明专利

DE3170502D1 PROCESS FOR ELECTROLYZING AQUEOUS SOLUTION OF ALKALI METAL CHLORIDE 未知
公开(公告)号：DE3170502D1
公开(公告)日：1985-06-20
申请号：DE3170502
申请日：1981-08-13
申请人： ASAHI GLASS CO LTD
发明人： SATO KIMIHIKO , SAJIMA YASUO , NAKAO MAKOTO , MORIMOTO TAKESHI
IPC分类号： C25B1/46 , C25B9/19 , C25B13/00 , C25B13/04 , C25B9/00
摘要： A process for electrolyzing an aqueous solution of an alkali metal chloride by feeding said aqueous solution of an alkali metal chloride into the central space of a hollow quadrilateral frame holding an anode therein, defining an anode compartment, and feeding water or a dilute aqueous solution of an alkali metal hydroxide into the central space of a hollow quadrilateral frame holding a cathode therein, defining a cathode compartment, said anode compartment and said cathode compartment being separated by a cation exchange membrane, in a filter-press type electrolytic cell wherein: (a) each hollow quadrilateral frame is provided with an inlet passage to the central space of said frame for the introduction of an electrolyte and an outlet passage from the central space of said frame for removal of an electrolyzed product; (b) an anode or a cathode is held in each said frame and electrically connected to a power source or an adjacent counter electrode, each said anode or cathode being respectively made of a metal plate having at the central part thereof notched rectangular portions being alternatively bent to project in parallel to said metal plate and displaced therefrom, said notched rectangular portions being defined by adjacent longitudinal parallel cuts through said metal plate; and (c) a gas and liquid permeable non-electrode porous layer made of inorganic particles is formed on the cation exchange membrane in a thickness thinner than that of the membrane on at least one surface of said membrane, wherein said at least one surface of the cation exchange membrane having the porous layer thereon is separated from the anode or cathode facing said porous layer.

7. 发明专利

CA1182777A PRODUCTION OF ALKALI METAL HYDROXIDE IN A CELL WITH A MEMBRANE CARRYING CARBOXYLIC ACID GROUPS AND INCLUDING METAL 未知
公开(公告)号：CA1182777A
公开(公告)日：1985-02-19
申请号：CA376418
申请日：1981-04-28
申请人： ASAHI GLASS CO LTD
发明人： SATO KIMIHIKO , SAJIMA YASUO , IWAMOTO JUNJIRO , NAKAO MAKOTO , SUHARA MANABU , NOSHIRO MAKOTO
IPC分类号： C25B1/46 , C25B13/08 , C25B1/16
摘要： An alkali metal hydroxide is produced by electrolyzing an aqueous solution of an alkali metal chloride fed into the anode compartment in a cell having an anode compartment and a cathode compartment formed by partitioning one cell with a cation exchange membrane. A cation exchange membrane made of a fluorinated polymer having carboxylic acid groups in an amount of 0.9 to 2.0 meq./g. dry resin is used as said cation exchange membrane and a metal or a metal ion is incorporated in the aqueous solution of the alkali metal chloride to form a non-electro catalytic thin layer of a metal hydroxide or oxide on the surface of said membrane in the anode compartment.

8. 发明专利

IN155396B AN IMPROVED FILTER PRESS TYPE ELECTROLYTIC CELL 未知
公开(公告)号：IN155396B
公开(公告)日：1985-01-19
申请号：IN965CA1981
申请日：1981-08-28
申请人： ASAHI GLASS CO LTD
发明人： SATO KIMIHIKO , SAJIMA YASUO , NAKAO MAKOTO , MORIMOTO TAKESHI
IPC分类号： C25B1/46 , C25B9/19 , C25B13/00 , B01K3/10 , B01D25/12
摘要： A process for electrolyzing an aqueous solution of an alkali metal chloride by feeding said aqueous solution of an alkali metal chloride into the central space of a hollow quadrilateral frame holding an anode therein, defining an anode compartment, and feeding water or a dilute aqueous solution of an alkali metal hydroxide into the central space of a hollow quadrilateral frame holding a cathode therein, defining a cathode compartment, said anode compartment and said cathode compartment being separated by a cation exchange membrane, in a filter-press type electrolytic cell wherein: (a) each hollow quadrilateral frame is provided with an inlet passage to the central space of said frame for the introduction of an electrolyte and an outlet passage from the central space of said frame for removal of an electrolyzed product; (b) an anode or a cathode is held in each said frame and electrically connected to a power source or an adjacent counter electrode, each said anode or cathode being respectively made of a metal plate having at the central part thereof notched rectangular portions being alternatively bent to project in parallel to said metal plate and displaced therefrom, said notched rectangular portions being defined by adjacent longitudinal parallel cuts through said metal plate; and (c) a gas and liquid permeable non-electrode porous layer made of inorganic particles is formed on the cation exchange membrane in a thickness thinner than that of the membrane on at least one surface of said membrane, wherein said at least one surface of the cation exchange membrane having the porous layer thereon is separated from the anode or cathode facing said porous layer.

9. 发明专利

CA1123575A PURIFICATION OF AQUEOUS SOLUTION OF POTASSIUM CHLORIDE 未知
公开(公告)号：CA1123575A
公开(公告)日：1982-05-18
申请号：CA368164
申请日：1981-01-09
申请人： ASAHI GLASS CO LTD
发明人： ITOI EIJI , NAKAYAMA TAKASHI , NAKAO MAKOTO , MATSUMURA YUKIO
IPC分类号： C01D3/04 , C01D3/14 , C01D3/16 , C25B1/46
摘要： The purification of an aqueous solution of potassium chloride, which is used for producing potassium hydroxide by electrolysis in an electrolytic cell using a cation exchange membrane is carried out by adding an oxidizing reagent to the solution to cause precipitation of the impurities including additives such as anticaking reagents and thus allow for their removal.

10. 发明专利

DE3100454A1 未知
公开(公告)号：DE3100454A1
公开(公告)日：1981-12-17
申请号：DE3100454
申请日：1981-01-09
申请人： ASAHI GLASS CO LTD
发明人： ITOI EIJI , NAKAYAMA TAKASHI , NAKAO MAKOTO , MATSUMURA YUKIO
IPC分类号： C01D3/04 , C01D3/14 , C01D3/16 , C25B1/46 , C25B1/16

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