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1. 发明专利

JPH09173774A METHOD FOR REMOVING FORMALDEHYDE PRODUCED IN ROOM 失效
公开(公告)号：JPH09173774A
公开(公告)日：1997-07-08
申请号：JP34903995
申请日：1995-12-21
申请人： NIPPON STEEL CORP , SEIKI KINZOKU KAKO KK
发明人： NODA TAMIO , NAKAGAWA TOSHIKAZU , SUGITA HIROHIKO
IPC分类号： B01D53/72 , B01D53/04 , B01J20/10
摘要： PROBLEM TO BE SOLVED: To economically and safely remove formaldehyde by using an adsorbent which is formed by depositing a reaction product of phosphoric acid, ammonium sulfate, or the like with hydrazine on a carrier consisting essentially of a porous mineral whose surface layer comprises silica. SOLUTION: In this method, a carrier consisting essentially of a porous mineral whose surface layer comprises silica, such as silica gel or activated clay is used. A reaction product of phosphoric acid, ammonium sulfate or a mixed aq. solution of these compounds with hydrazine is deposited on the carrier to form an adsorbent having air purification capacity. This adsorbent is used for economically and safely removing formaldehyde which is harmful to the human body and is produced in rooms of a newly-constructed house or from new furniture, etc.

2. 发明专利

JPH11156211A METALLIC CARRIER BY DIFFUSION JOINING 失效
公开(公告)号：JPH11156211A
公开(公告)日：1999-06-15
申请号：JP32314897
申请日：1997-11-25
申请人： NIPPON STEEL CORP
发明人： KASUYA MASAYUKI , NODA TAMIO
IPC分类号： F01N3/28 , B01D53/86 , B01J35/04
摘要： PROBLEM TO BE SOLVED: To prevent the occurrence of a failure of a metallic carrier by executing brazing on the exhaust gas inflow side of the metallic carrier and diffusion joining on the exhaust gas outflow side thereof in executing joining of the contact part of flat foil and corrugated foil. SOLUTION: A honeycomb body 1 is formed by using stainless steel contg. aluminum and subjecting the flat foil 5 to corrugation to form corrugated foil 6 and alternately winding the corrugated foil 6 and the flat foil 5. The joining of the contact parts of the flat foil 5 and corrugated foil 6 of the honeycomb body 1 is executed by applying an adhesive on the flat foil 5 or the corrugated foil 6 before winding on the exhaust gas inflow side of the metallic carrier 2, sprinkling brazing powder on the honeycomb body 1 after winding to stick the brazing powder to the adhesive coated parts, thereby forming brazied parts 4. The flat foil 5 and the corrugated foil 6 and wound on the exhaust gas outflow side 4 and are subjected to a high-temp. vacuum treatment, by which the contact part of the flat foil 5 and the corrugated foil 6 are diffusion joined and the diffusion joined parts 15 are formed.

3. 发明专利

JPH10309473A METALLIC CARRIER FOR CATALYTIC CONVERTOR AND ITS MANUFACTURE 失效
公开(公告)号：JPH10309473A
公开(公告)日：1998-11-24
申请号：JP12093197
申请日：1997-05-12
申请人： NIPPON STEEL CORP
发明人： OTANI TADAYUKI , NODA TAMIO , IMAI ATSUHIKO , KASUYA MASAYUKI
IPC分类号： F01N3/28 , B01D53/86 , B01J35/04
摘要： PROBLEM TO BE SOLVED: To provide a metallic carrier which can undergo severer condition for a quickly heating-quenching thermal cycle caused by exhaust gas of an engine and has excellent durability. SOLUTION: Unjoined parts 11, in which a flat foil and a wavy foil are not joined, are formed in the position of the inside from the outer periphery apart from the center axis 10 of a metallic honeycomb body 2 by at least 1/2 of radius R in length of (9/20-9/10) of the total length L of the metallic honeycomb body 2 from one end becoming an outlet side of gas by at least one round in the whole circumference. The other part is joined by diffusion and joining. Furthermore, a joined part 13 with length of =1/3 of the total length L as the starting point in the boundary of the metallic honeycomb body 2 and an outer cylinder 3. The other parts of the boundary are unjoined parts 12. Thereby, the metallic honeycomb body 2 undergoes repeated heating at high temperature of >=950 deg.C and loss of the metallic honeycomb such as a fragment is prevented.

4. 发明专利

JPH10235205A METALLIC CATALYST CONVERTER AND ITS PRODUCTION 失效
公开(公告)号：JPH10235205A
公开(公告)日：1998-09-08
申请号：JP4201597
申请日：1997-02-26
申请人： NIPPON STEEL CORP
发明人： NODA TAMIO , OTANI TADAYUKI
IPC分类号： B01D53/86 , B01J35/04 , F01N3/28
摘要： PROBLEM TO BE SOLVED: To make it possible to sufficiently absorb the thermal stresses in the radial direction and axial direction of a columnar honeycomb body carried with catalysts on the surfaces in vent holes by interposing annular elastic supporting bodies between this honeycomb body and a cylindrical casing in which the honeycomb body is inserted and held, thereby mechanically supporting and restraining both. SOLUTION: This catalyst converter is constituted by inserting the honeycomb body 6 into the cylindrical casing (outside cylinder) 1 and carrying the prescribed catalysts thereon. The annular elastic supporting bodies 2, 4 having a corrugated shape in the sectional shape in the axial direction are wound one round on the circumference of the honeycomb body 6 in order to mechanically support and restrain the outside cylinder 1 and the honeycomb body 6. Namely, the annular elastic supporting body 2 on the honeycomb body side has an overlap part 7 and is joined to the honeycomb body 6 in joint parts 3 at two points. On the other hand, the annular elastic supporting body 4 on the outer cylinder side is wound to overlap on the corrugation shape of the annular elastic supporting body 2. The top end of the annular elastic supporting body 4 is made longer so as to protrude and the annular elastic supporting body is joined 5 in this part to the outside cylinder 1.

5. 发明专利

JPH1043593A AIR CLEANING MATERIAL, ITS PRODUCTION AND METHOD FOR REMOVING HYDROGEN SULFIDE IN AIR WITH THE MATERIAL 失效
公开(公告)号：JPH1043593A
公开(公告)日：1998-02-17
申请号：JP20149796
申请日：1996-07-31
申请人： NIPPON STEEL CORP
发明人： NODA TAMIO , NAKAGAWA TOSHIKAZU
IPC分类号： B01D53/86 , B01J23/745
摘要： PROBLEM TO BE SOLVED: To obtain an air cleaning material capable of maintaining its deodorizing action at a practical speed over a long period of time by incorporating specified amts. of α-iron hydroxide and γ-iron hydroxide by a specified total amt. and imparting a specified average specific surface area. SOLUTION: This air cleaning material is powder contg. >=20% α-iron hydroxide and >=20% γ-iron hydroxide by >=80% in total and has >=50m /g average specific surface area. The powder is preferably packed with an air permeable packing material having

6. 发明专利

JPH1029077A METHOD FOR JOINING CATALYST CONVERTER AND EXHAUST SYSTEM MEMBER OF AUTOMOBILE AND JOINING MEMBER FOR EXHAUST SYSTEM OF AUTOMOBILE 失效
公开(公告)号：JPH1029077A
公开(公告)日：1998-02-03
申请号：JP18646996
申请日：1996-07-16
申请人： NIPPON STEEL CORP
发明人： OTANI TADAYUKI , NODA TAMIO , TAKESHITA KAZUTSUGU , SAIJO MASUO , UCHINAKA NOBUYUKI , SHIMIZU FUJIO , SHINABE NORISHIGE
IPC分类号： F01N3/20 , B01D53/86 , B01J35/04 , B23K20/12 , F01N3/28
摘要： PROBLEM TO BE SOLVED: To obtain an integrated exhaust system member of an automobile which has a defectless joint part having high accuracy by joining the metal case of a catalyst converter and an exhaust manifold by friction pressure welding. SOLUTION: The catalyst converter is formed by inserting and fixing a honeycomb body into the metal case 1 to constitute a carrier and depositing the catalyst for purification of exhaust gases. The metal case 1 and the exhaust manifold 3 are joined and integrated by friction pressure welding, by which the exhaust system member for automobile is obtd. Since the friction pressure welding is solid phase joining and does not produce a liquid phase, the joining of different materials is possible. The metal case 1 and the exhaust manifold 3 may be joined by the friction pressure welding via a reducer having a deformed section. At this time, the joint having the deflectless joint part may be obtd. if the joint surface of the metal case 1 or the reducer is formed to a plate thickness of 1.0 to 2.0mm, an outside diameter of 60 to 200mm and a variation in the outside diameter within ±0.5% of the true circle.

7. 发明专利

JPH10337A CATALYTIC CONVERTER MADE OF METAL AND ITS PRODUCTION 失效
公开(公告)号：JPH10337A
公开(公告)日：1998-01-06
申请号：JP15862796
申请日：1996-06-19
申请人： NIPPON STEEL CORP
发明人： NODA TAMIO , OTANI TADAYUKI
IPC分类号： F01N3/28 , B01D53/86 , B01J35/04 , B21D47/00
摘要： PROBLEM TO BE SOLVED: Not only to relax and absorb thermal stress in the radial direction of a honeycomb body but also to sufficiently absorb thermal stress in the axial direction and to heighten adiabatic property to overcome problems of high cost and to improve durability. SOLUTION: A honeycomb body 1 is fitted in a casing 2 through elastic support bodies 3. The elastic support bodies 3 are installed at least in a waste gas inlet side end part of the honeycomb body 1 and either are joined to only one of the honeycomb body 1 and the casing 2 or are joined to neither of them. The elastic support bodies 3 are restrained in the axial direction by projections or the like which the casing 2 is worked from the outer surface to form. And a space between the honeycomb body 1 and the casing 2 is made to be of adiabatic structure. In this way, the device sufficiently keeps with the use environment stricter than the present situation.

8. 发明专利

JPH09279310A STAINLESS FOIL EXCELLENT IN DIFFUSION JOINABILITY AND METAL CARRIER USING THE SAME 失效
公开(公告)号：JPH09279310A
公开(公告)日：1997-10-28
申请号：JP9454896
申请日：1996-04-16
申请人： NIPPON STEEL CORP
发明人： OTANI TADAYUKI , NODA TAMIO , MEGURO MASARU , UCHIUMI TORU
IPC分类号： F01N3/28 , B01D53/86 , B01J35/02 , B23K20/00 , C21D9/46 , C22C38/00 , C22C38/18
摘要： PROBLEM TO BE SOLVED: To produce stainless foil excellent in diffusion joinability, at the time of producing heat resistant stainless foil contg. a specified amt. of Al, by specifying the draft and average grain size in the foil thickness direction after a final annealing stage. SOLUTION: At the time of producing heat resistant foil contg. 0.5 to 8% Al and constituting a honeycomb body, after a final annealing stage, rolling is executed at a draft of 85 to 99%, preferably, in the range of 90 to 99%, and the average grain size in the foil thickness direction is regulated to 0.01 to 5 micron, preferably, to the range of 0.01 to 2 micron. In this way, the stainless foil for producing a metal carrier excellent in diffusion joinability can be obtd.

9. 发明专利

JPH05329197A AIR CLEANING AGENT AND METHOD FOR MANUFACTURING THE SAME 失效
公开(公告)号：JPH05329197A
公开(公告)日：1993-12-14
申请号：JP14019092
申请日：1992-06-01
申请人： NIPPON STEEL CORP
发明人： NODA TAMIO
IPC分类号： A61L9/01
摘要： PURPOSE:To provide an air cleaning agent for cleaning contaminated air containing malodorous gas or the like represented by methyl mercaptan or the like and a method for manufacturing the same. CONSTITUTION:An air cleaning agent having a carrier body of sepiolite molded body carrying fine grain palladium is impregnated with aqueous solution of palladium salt, immersed in a hydrazine aqueous solution and then dried to separate metal palladium carried on the carrier body. Or, after the carrier body is impregnated with an aqueous solution mixture of the palladium salt and hydrazine and dried, the metal palladium is separated to be carried on the carrier body. Thus, the air cleaning agent having high demercaptan performance can be economically and simply manufactured and simply reproduced, so that the demercaptan performance functions for a long period.

10. 发明专利

JPH05177131A AIR PURIFYING ARTICLE AND ITS PRODUCTION 失效
公开(公告)号：JPH05177131A
公开(公告)日：1993-07-20
申请号：JP35811591
申请日：1991-12-27
申请人： NIPPON STEEL CORP
发明人： NODA TAMIO
IPC分类号： A61L9/00 , B01D53/02 , B01D53/34 , B01D53/38 , B01D53/81 , B01J20/08 , B01J20/10 , B01J20/18 , C01B39/02 , C01B39/06
摘要： PURPOSE:To produce an air purifying article purifying contaminated air containing malodorous gases represented by NH3 or H2S. CONSTITUTION:A porous material composed of synthetic zeolite having pores with a pore size of 3-13Angstrom , gamma-alumina having pores with a pore size of 50-1000Angstrom or a water-resistant silica gel having pores with a pore size of 100-600Angstrom is used as a carrier and colloidal fine metal copper particles is supported on the carrier to obtain the objective air purifying article Otherwise, the air purifying article is produced by dipping the above-mentioned porous material in an aqueous solution containing a Cu-salt and N2H4 or NaBH4 and drying the impregnated porous material or dipping the porous material in an aqueous Cu-salt solution and subsequently dipping the same in an aqueous solution of N2H4 or NaBH4 before drying.

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