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1. 发明专利

JP2002267120A METHOD FOR REPAIRING SURFACE OF MATERIAL OF MOLTEN PART OF WASTE BURNT ASH 失效
公开(公告)号：JP2002267120A
公开(公告)日：2002-09-18
申请号：JP2001067953
申请日：2001-03-12
申请人： MITSUI SHIPBUILDING ENG
发明人： NANBA MASAO , NISHIMURA NAOYUKI , HASHIMOTO MASAKATA
IPC分类号： F23G5/00 , C04B35/66 , F23G5/44 , F23J1/00 , F27D1/00 , F27D1/16
摘要： PROBLEM TO BE SOLVED: To improve a life of a furnace by repairing by using a high corrosion resisting material when the heat resisting material of a molten part of which the inner wall surface of a furnace is formed is damaged by molten slag, in a melting furnace to produce molten slag by heating burnt ash of a burning substance containing waste. SOLUTION: In a fire-resisting material 1 of which the inner surface of the molten part of a melting furnace where waste burnt ash is heated to form molten slag is formed, when the surface of the material 1 is damaged by the molten slag 2, a mixture material consisting of a spinel type compound MCr2 O4 (M is Mg or bivalent Fe) or a mixture material consisting of the compound, chromia, and zirconia are used as a repair material 4 and repair is effected by a spraying method. The spinel type compound, chromia, and zirconia are all thermodynamically stable, and high in compatibility with alkali and sulfur and corrosion of a heat resisting material can be suppressed by ash molten slag containing the elements in high concentration.

2. 发明专利

JP2002081872A AIR HEATER 失效
公开(公告)号：JP2002081872A
公开(公告)日：2002-03-22
申请号：JP2000268573
申请日：2000-09-05
申请人： MITSUI SHIPBUILDING ENG
发明人： IRIE TAKAHIRO , TEZUKA NORIO , NANBA MASAO , TOKUNAGA JUNICHIRO
IPC分类号： F23L15/00 , F23G5/00 , F23G5/027 , F23G5/14 , F23G5/46 , F28D7/12 , F28F1/00
摘要： PROBLEM TO BE SOLVED: To provide a compact, high temperature resistant and corrosion resistant air heater exhibiting excellent corrosion resistance and durability in the highly corrosive high temperature gas atmosphere of an incinerator. SOLUTION: A metallic inner tube 2 and a ceramic outer tube 4 of coaxial double tube structure are mounted on a receiving metal 3 suspended by a suspension metal 1a. The suspension metal 1a is made of an Invar material having an extremely small thermal elongation. Since the inner and outer tubes are not restricted, thermal displacement can be minimized. Alternatively, a structure of stacking ceramic outer tubes strong against a compressive force can be employed. Since a ceramic tube is lightweight as compared with a conventional brick, required heat recovery can be performed by stacking them and an air heater which can recover heat sufficiently while preventing thermal deformation can be obtained.

3. 发明专利

JP2001065839A SURFACE PROCESSING METHOD FOR MOLTEN PORTION MATERIAL IN WASTE COMBUSTION ASH 失效
公开(公告)号：JP2001065839A
公开(公告)日：2001-03-16
申请号：JP24293599
申请日：1999-08-30
申请人： MITSUI SHIPBUILDING ENG
发明人： NANBA MASAO , NISHIMURA NAOYUKI , HASHIMOTO MASAKATA
IPC分类号： B09B3/00 , C04B35/66 , C04B41/87 , F23G5/00 , F23G5/44 , F23G5/48 , F23J1/00 , F27D1/00
摘要： PROBLEM TO BE SOLVED: To cover the surface of a molten portion heat resistant material and improve corrosion resistance against ash molten slag in the molten portion heat resistant material wherein ash fraction produced by combusting an article to be combusted originating from waste and constructing a furnace inner surface brought into the molten slag. SOLUTION: In a molten portion material of a waste combustion ash fraction obtained by heating an ash fraction produced by combusting an article to combusted originating from waste and constructing a furnace inner surface brought into molten slag, a specimen surface is covered with a mixture material comprising a spinel type compound MCr204 (M: Mg or bivalent Fe) or a compound and chromia and zirconia, etc., such spinel type compound, chromia and zirconium are stable in a thermodynamical manner, and are highly compatible with alkali and sulfur, etc., and are capable of suppressing corrosion of a heat resistant material 1 due to ash molten slag 2 containing these elements with high concentration.

4. 发明专利

JPH02121266A SOLID ELECTROLYTE TYPE FUEL CELL 失效
公开(公告)号：JPH02121266A
公开(公告)日：1990-05-09
申请号：JP27523488
申请日：1988-10-31
申请人： MITSUI SHIPBUILDING ENG , NIPPON KAKYO KIKI KAIHATSU
发明人： SHIMOZU MASATERU , NANBA MASAO
IPC分类号： H01M8/12 , H01M8/24
摘要： PURPOSE:To increase the output voltage and to obtain a sufficient strength against a vibration, a shock, and the like, by making the cell consist of units in which unit cells are connected to plural fuel cell stacks with common connecting conductors, and connecting neighboring fuel cell stacks through connecting conductors. CONSTITUTION:A unit cell is composed of plural unit cell units 18 connected in series, and conductors 19 for connection are arranged at the connections of the unit cells. Unit cells 6a and 6b with different diameters composed of three unit cell units 18 are laminated respectively in concentrical circular forms, for example. The connections in the unit cell units 18 in the unit cells 6a to 6d are on the same plane, and the unit cell units 18 are connected through connecting conductors 19 common to the unit cells, to form a fuel cell stack. Consequently, while the laminate density of the unit cells 6a to 6d is increased, the power generation capacity can be stabilized, and the holding strength of fuel cell stacks can be improved remarkably.

5. 发明专利

JP2003212656A SILICON CARBIDE-BASED COMPOSITE CERAMICS AND HIGH- TEMPERATURE AIR HEATER 审中-公开
公开(公告)号：JP2003212656A
公开(公告)日：2003-07-30
申请号：JP2002014243
申请日：2002-01-23
申请人： MITSUI SHIPBUILDING ENG
发明人： NISHIMURA NAOYUKI , ISHIHARA SHUJI , NANBA MASAO
IPC分类号： F23L15/00 , C04B35/565 , F28F21/04
摘要： PROBLEM TO BE SOLVED: To improve toughness of silicon carbide-based ceramics while securing its thermal conductivity. SOLUTION: This silicon carbide-based ceramics contains silicon carbide as a principal component and tetragonal zirconia among grains of the silicon carbide. When a crack progresses in this ceramics and reaches a crystal layer of tetragonal zirconia, the phase transition from a tetragonal crystal to a monoclinic crystal occurs by the stress caused by the crack and the energy of the progressing crack is absorbed by this phase transition. As a result, the toughness of this ceramics can be improved. COPYRIGHT: (C)2003,JPO

6. 发明专利

JP2001280635A SURFACE TREATMENT METHOD FOR MATERIAL OF MELTING PART FOR WASTE COMBUSTION ASH 失效
公开(公告)号：JP2001280635A
公开(公告)日：2001-10-10
申请号：JP2000098910
申请日：2000-03-31
申请人： MITSUI SHIPBUILDING ENG
发明人： NANBA MASAO , NISHIMURA NAOYUKI , HASHIMOTO MASAKATA
IPC分类号： F23M5/00 , F27D1/00
摘要： PROBLEM TO BE SOLVED: To improve a durability for a heat cycle upon start and stop of an incinerator when the surface of a heat resistant material of a melting part in the inner surface of a melting furnace is coated with a highly corrosion- resistant coating in the furnace in which ash generated by burning a combustion material including waste is heated into a molten slag. SOLUTION: The surface of the outermost layer of the heat resistant material of the melting part in the inner surface of the melting furnace in which the ash obtained by burning the waste is heated into the molten slag is coated with a spinel type compound MCr2O4 (M is Mg or divalent Fe) with a high corrosion resistance, or a mixed material composed of this compound and chromia and zirconia and an intermediate layer having an intermediate composition of a coating material and a base material is formed in a part between the base material and the coating of the outermost layer. Since the intermediate layer is formed so that thermal expansion characteristics gradually change, a thermal stress due to a heat cycle is decreased so that the coating composed of a plurality of layers hardly generating a peeling can be formed.

7. 发明专利

JPH10318527A HIGH TEMPERATURE AIR HEATER 失效
公开(公告)号：JPH10318527A
公开(公告)日：1998-12-04
申请号：JP12968597
申请日：1997-05-20
申请人： MITSUI SHIPBUILDING ENG
发明人： NANBA MASAO , MIYATAKE NAOMASA , KIUCHI HIDEHIRO
IPC分类号： F23L15/00 , F23G5/46
摘要： PROBLEM TO BE SOLVED: To detect variation in the quantity of air to be introduced due to abrasion of a refractory protective tube while suppressing permeation of high temperature gas through the protective tube by introducing the air into a gap between a heating tube and the protective tube thereby providing a positive pressure in the gap as compared with the outside (high temperature gas channel). SOLUTION: A high temperature air heater exchanges heat with high temperature gas G through a heating tube body 6, i.e. a heating tube 5 coated with a refractory protective tube 6, and heats up the air 8 flowing through the heating tube 5. A gap 7 is provided between the heating tube 5 and the protective tube 6 and the outer air is introduced into the gap 7 by an air introduction means 101 including a blower B in order to purge the corrosive high temperature gas G. According to the structure, the high temperature corrosive gas is prevented from being diffused reversely into the air 8 to be heated or being mixed therewith even when the high temperature corrosive gas permeates the wail of the protective tube 6 and intrudes into the gap 7 thus enhancing durability of the heating tube 5, and the like. Furthermore, the air introduction means 101 is provided with an air flow meter 103 and soundness of the protective tube 6 is evaluated based on the tracking results.

8. 发明专利

JPH10238970A HIGH TEMPERATURE AIR HEATER AND WASTE DISPOSAL APPARATUS 失效
公开(公告)号：JPH10238970A
公开(公告)日：1998-09-11
申请号：JP4608997
申请日：1997-02-28
申请人： MITSUI SHIPBUILDING ENG
发明人： NANBA MASAO , TOMOYASU SUMINAO , KIUCHI HIDEHIRO , URAYAMA TERUO , TEZUKA NORIO
IPC分类号： F23G5/027 , F23G5/14 , F23G5/16 , F23G5/46 , F28D7/12
摘要： PROBLEM TO BE SOLVED: To provide a high temperature air heater 22 capable of reducing wear and damage of a tip end of a refractory protective tube caused on the basis of a contact with high temperature corrosive gas flow. SOLUTION: In a high temperature air heater 22 for heating air to be heated that heat exchanges high temperature gas G2 through a heat transfer tube 3a provided in the atmosphere of the high temperature gas G2 and including a refractory protective tube 30 on the surface thereof and that flows in the heat transfer tube 3a, a tip end 33 of the refractory protective tube is formed into a protruded configuration having reduced resistance against the high temperature gas G2 flow. With the aid of the tip end 33 of the protruded configuration there is moderated thermal influence such as concentration of thermal stress caused by a contact with the high temperature gas G2 flow, and hence there are reduced damages such as wear and crack of the tip end 33.

9. 发明专利

JPH1054528A HIGH TEMPERATURE AIR HEATER 失效
公开(公告)号：JPH1054528A
公开(公告)日：1998-02-24
申请号：JP21465896
申请日：1996-08-14
申请人： MITSUI SHIPBUILDING ENG
发明人： NANBA MASAO , TOMOYASU SUMINAO , KIUCHI HIDEHIRO , URAYAMA TERUO
IPC分类号： F23G5/027 , F23G5/46 , F23G5/48 , F28D7/12
摘要： PROBLEM TO BE SOLVED: To improve corrosivity and durability under a high temperature highly corrosive gas atmosphere by preventing the peeling, damaging and other failures of a refractory material for protecting a heat exchanger tube. SOLUTION: Exchange of heat is performed with a high temperature gas 20 through a heat exchanger tube 4 made of a metal which is provided in an atmosphere of a high temperature gas 20 and covered with a refractory protective material 5 to heat air 21 to be heated flowing through the heat exchanger tube 4. In a high temperature air heater 10 thus arranged, the heat exchanger tube 4 is made up of an outer tube 1 and an inner tube 3 inserted into the outer tube 1 through a passage 2 of the air 21 to be heated and a void 6 is provided between the outer tube 3 and the refractory protective material 5 to introduce outside air into the void 6.

10. 发明专利

JPH08232082A METALLIC MEMBER FOR HIGH TEMPERATURE OPERATION 失效
公开(公告)号：JPH08232082A
公开(公告)日：1996-09-10
申请号：JP3826395
申请日：1995-02-27
申请人： MITSUI SHIPBUILDING ENG
发明人： MIYATAKE NAOMASA , NANBA MASAO , KAWAMOTO SATOSHI
IPC分类号： F28F19/06 , C23C16/50 , C23C30/00
摘要： PURPOSE: To develop a highly durable metallic member for high temp. operation excellent in oxidation resistance at high temp. and capable of suppressing the progress of oxidation by forming a film of a specified crystalline oxide contg. a rare-earth element on the surface of a heat-resistant metallic substrate. CONSTITUTION: A crystalline rate-earth element-contg. oxide coating film 3 consisting of one or >=2 kinds among monoclinic ZrO2 , Al2 O3 , TiO2 , SiO2 and Y2 O3 contg. 0.01-1.0wt.% one or >=2 kinds of rare-earth elements such as Y, La, Ce and Nd is formed by plasma CVD, etc., in 2-20μm thickness on the surface of a heat-resistant metallic substrate 1 of Fe-Cr-Al alloy, stainless steel, etc., or the coating film 3 is formed on the substrate 1 surface in 1-10μm thickness, and then a coating film 4 of a crystalline oxide such as monoclinic ZrO2 is formed thereon in 1-20μm thickness. The adhesive strength to the coating film 3 is increased through the intervention of the coating film 3, and a stabilized oxidation-resistant layer 2, which is not crystallized at high temp. when in use since it is crystalline, is formed.

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