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51. 发明专利

JPH11229012A STRUCTURE FOR ARRANGING STAVE IN SHAFT FURNACE TYPE METALLURGICAL FURNACE 失效
公开(公告)号：JPH11229012A
公开(公告)日：1999-08-24
申请号：JP4893198
申请日：1998-02-13
申请人： NIPPON KOKAN KK
发明人： SUMIKAMA TAKASHI , IINO BUNGO , SAKAI ATSUSHI , ARAKI TSUNEO , MATSUURA MASAHIRO , TERADA KANEO , GOCHO MAKOTO
IPC分类号： C21B7/10
摘要： PROBLEM TO BE SOLVED: To keep the durability of a stave in a shaft furnace type metallurgical furnace, to restrain the heat loss through the stave as little as possible and further, to reduce the equipment cost needed to the stave, etc. SOLUTION: This arranging structure of the staves, with which the long service life of the stave in the whole furnace and the energy saving with the restraint of heat conduction through the stave and the cost reduction on the equipment and the operation can be achieve by optimally arranging the staves in each zone according to the difference of the surrounding condition, is found out under the attension to the point, in which the large difference is developed in the surrounding at the inside of the furnace wall in the furnace height direction. In the furnace height direction, in the upper part and middle part zone (A) of the furnace with the small heat load, the cast iron-made staves are arranged, and in the lower part zone (B) of the furnace, with the large heat load at lower than the above zone (A), the copper or copper alloy-made staves are arranged, and in the lowermost zone (C) in the furnace at lower than the above zone (B), the cast iron-made staves or the copper or copper alloy-made staves are arranged.

52. 发明专利

JPH1088214A STEELMAKING METHOD USING IRON SCRAP 失效
公开(公告)号：JPH1088214A
公开(公告)日：1998-04-07
申请号：JP25746096
申请日：1996-09-06
申请人： NIPPON KOKAN KK
发明人： INOKUCHI TAKANORI , MATSUURA MASAHIRO , ARIYAMA TATSURO , TAGUCHI NORIHIKO , MAKI TOSHIMICHI , WATABE MASAYUKI
IPC分类号： C21B11/02 , C21B13/12
摘要： PROBLEM TO BE SOLVED: To provide a producing method of a steel, by which firstly, molten iron from iron scrap and high calory gas used to power generation are obtd. in a cupola and the steel is produced with an electric furnace by using this molten iron as raw material and high calory gas is used as fuel for power generation and the electric power is generated and as a result, the production of steel with the electric furnace can remarkably economically be executed in comparison with the conventional method. SOLUTION: The steelmaking method using the iron scrap, is provided with the following processes. (A) The iron scrap (a) and coke (b) are charged into the cupola 3 from the upper part of the cupola 3 and gaseous oxygen (e) or the gaseous oxygen and the air and >=100kg/ton of iron scrap (a) of carbonaceous material (d) are injected from tuyeres at the lower part of the cupola to burn the carbonaceous material (d), and the iron scrap (a) is made to the molten iron and exhaust gas (m) having >=1500Kcal/Nm calorific value is recovered from the upper part of the cupola. (B) The molten iron is used as a part of iron raw material and the steel is produced in the electric furnace. (C) The exhaust gas (m) is used as the fuel in a boiler 20 for power generation. As the carbonaceous material, the pulverized fine coal is desirable and as the coke, the coke for blast furnace is desirable.

53. 发明专利

JPH06316713A OPERATION OF BLAST FURNACE 失效
公开(公告)号：JPH06316713A
公开(公告)日：1994-11-15
申请号：JP12550493
申请日：1993-04-28
申请人： NIPPON KOKAN KK
发明人： ISHII KUNIHIKO , FURUKAWA TAKESHI , MATSUURA MASAHIRO , YOKOYAMA NAOYA
IPC分类号： C21B5/00 , C21B7/00 , C21B7/16
摘要： PURPOSE:To shorten renew time of coke in a furnace core part at the lower part of a bloast furnace and to improve gas ventilation and liquid permeation at the furnace core part of the blast furnace by preventing the formation of dense shell at the lower part betwen tuyeres in the blast furnace. CONSTITUTION:At least one set of an auxiliary blasting pipe 6 is arranged between plural tuyeres 2, 2' arranged in the peripheral direction at the lower part in the blast furnace, and hot blast or auxiliary fuel together with the hot blast are blown into the blast furnace from the auxiliary blasting pipe 6. The auxiliary blasting pipe 6 is positioned at the lower part from the tuyeres 2, 2' and this blowing hole 6a is directed to diagonally lower frontward to a horizontal line. In the case of blowing the hot blast or the auxiliary fuel together with the hot blast from the auxiliary blasting pipe 6, the blowing condition is selected so that raceway depth formed at the tip part of the auxiliary blasting pipe 6 becomes

54. 发明专利

JPH06235009A BLASTING METHOD IN BLAST FURNACE 失效
公开(公告)号：JPH06235009A
公开(公告)日：1994-08-23
申请号：JP2009593
申请日：1993-02-08
申请人： NIPPON KOKAN KK
发明人： MATSUURA MASAHIRO , FURUKAWA TAKESHI , YOKOYAMA NAOYA , SHIMOMURA AKIO , ISHII KUNIHIKO
IPC分类号： C21B5/00 , C21B7/16 , F27B1/16
摘要： PURPOSE:To provide a blasting method in a blast furnace, in which combustion efficiency of powdery fuel can be kept to a high level without making oxygen concn. in the blasting gas high. CONSTITUTION:A partition ring 11 is arranged into hollow part of a tuyere 2 and the tip part of the tuyere 2 is divided into a main passage 17 at the center zone and a sub-passage 19 at the peripheral zone with the partitioning ring 11. The gas supplied from the rear end side of the tuyere 2 is passed through by dividing the main passage 17 and the sub-passage 19 to form a jet stream in the furnace.

55. 发明专利

JPS62290843A PRODUCTION OF FERRONICKEL 失效
公开(公告)号：JPS62290843A
公开(公告)日：1987-12-17
申请号：JP13462486
申请日：1986-06-10
申请人： NIPPON KOKAN KK
发明人： ONO YOTARO , MATSUURA MASAHIRO , SAITO HIROSHI
IPC分类号： C22C33/04 , C22B23/02
摘要： PURPOSE:To improve the productivity by blowing a preheated gas into a blast furnace from the middle as well as oxygen from a tuyere so as to facilitate the evaporation of water, to reduce the coke ratio and to lower the temp. of furnace top gas. CONSTITUTION:Ni ore is classified into lump ore and fine ore by sieving. The lump ore is charged into a blast furnace 1 from the top as it is and the fine ore is granulated and charged into the furnace 1 from the top. Oxygen is blown into the furnace 1 from a tuyere 2 and a preheated gas is also blown from the shaft part at the middle 3 to evaporate water in the ores, to reduce the coke ratio and to lower the temp. of furnace top gas. Thus, the productivity is improved.

56. 发明专利

JP2002336641A METHOD FOR REFINING GAS GENERATED FROM WASTE 失效
公开(公告)号：JP2002336641A
公开(公告)日：2002-11-26
申请号：JP2001149068
申请日：2001-05-18
申请人： NIPPON KOKAN KK
发明人： TOMURA KEIJI , MATSUURA MASAHIRO , YAMAGUCHI HIROSHI , OKUYAMA KEIICHI
IPC分类号： F23G5/027 , B01D53/14 , B01D53/40 , B09B3/00 , C02F11/10 , C10J3/00 , C22B13/00 , C22B19/00 , F23J15/00 , F27D17/00
摘要： PROBLEM TO BE SOLVED: To provide a dust-containing gas refining method by which the materials contained in the dust in the gas discharged from a gasifier or incinerator of waste and the dust discharged when acidic gas is removed can be separated and recovered effectively without arranging complicated separation steps subsequently and the recovered dust can be recycled easily as resources. SOLUTION: The gas generated by treating waste at high temperature in the waste gasifier 1 for reducing the volume of the waste is introduced into a high-temperature dust removing facility 2 to remove dust, which is then introduced into a heat exchanger 3 to recover the heat of the gas. The gas whose heat is recovered is introduced into a middle-temperature dust removing facility 4 to remove dust, which is then introduced into an acidic gas treating step to remove the acidic gas.

57. 发明专利

JP2002316139A METHOD AND SYSTEM FOR TREATING REFUSE UNSUITABLE FOR COMBUSTION 失效
公开(公告)号：JP2002316139A
公开(公告)日：2002-10-29
申请号：JP2001124412
申请日：2001-04-23
申请人： NIPPON KOKAN KK
发明人： YAMAKAWA YUICHI , NOTO TAKASHI , NAKAMURA SUNAO , MATSUURA MASAHIRO
IPC分类号： F23G5/027 , B09B1/00 , B09B3/00 , B09B5/00 , C08J11/12 , C10J3/00 , C10L3/00 , F23G5/24 , F23G5/50
摘要： PROBLEM TO BE SOLVED: To provide a method for treating refuse unsuitable for combustion to recover resources by treating the refuse unsuitable for combustion by operation of a gasification plant and a system for treating the refuse unsuitable for combustion to support the operation of the gasification plant. SOLUTION: The system for treating the refuse unsuitable for combustion is provided with a means (33a) receiving information, including the weight and the component ratio of the refuse unsuitable for combustion desired to be delivered from an intermediate treatment site and a landfill site, a means (34b) establishing a plurality of operation conditions so that the weight and the component ratio of the refuse unsuitable for combustion to be charged to the gasification plant are varied based on the information on the refuse unsuitable for combustion, a means (34c) simulating the operation of the gasification plant under such operation conditions, means (34d, 35a) selecting an optimum operation condition by evaluating the result of the simulation, and a means (35b) transferring the designation information for the refuse unsuitable for combustion designating the weight and the component ratio of the refuse unsuitable for combustion received by the gasification plant for the above intermediate treatment site and the above landfill site based on the selected optimum operation condition.

58. 发明专利

JP2002267136A METHOD FOR GASIFYING AND MELTING WASTE AND ITS FACILITY 失效
公开(公告)号：JP2002267136A
公开(公告)日：2002-09-18
申请号：JP2001064762
申请日：2001-03-08
申请人： NIPPON KOKAN KK
发明人： SUDO MASAHIRO , YAMAKAWA YUICHI , MATSUURA MASAHIRO , NAKAMURA SUNAO , SUZUKI YASUO , AKIYAMA HAJIME , TADAMI TOSHIHIRO , MATSUDAIRA TSUNEO
IPC分类号： F23J1/00 , F23G5/16 , F23G5/24 , F27B17/00 , F27D15/00 , F27D17/00
摘要： PROBLEM TO BE SOLVED: To provide a method for gasifying and melting a waste capable of retaining re-scattering to a slight amount even when a dropping ash is charged in a gasifying melting furnace and avoiding a problem point brought about when a solidifying material is added to the ash to a solid matter and its facility. SOLUTION: The method for gasifying and melting the waste comprises the steps of thermally decomposing the waste, gasifying the waste, and melting its residue. The method further comprises the steps of pressure-molding the dropped ash recovered from a unit disposed between the gasifying melting furnace 10 and an exhaust gas dust collector 45 to a molding, and charging the molding in the melting furnace 10.

59. 发明专利

JP2002267129A METHOD FOR GASIFYING AND MELTING WASTE 失效
公开(公告)号：JP2002267129A
公开(公告)日：2002-09-18
申请号：JP2001071805
申请日：2001-03-14
申请人： NIPPON KOKAN KK
发明人： SUDO MASAHIRO , NAKAMURA SUNAO , MATSUURA MASAHIRO , YAMAKAWA YUICHI , MATSUDAIRA TSUNEO
IPC分类号： F23G5/24 , F23G5/02
摘要： PROBLEM TO BE SOLVED: To provide a method for gasifying and melting a waste capable of largely reducing an amount of a chemical to be added to treat an insolubilization of a fly ash. SOLUTION: The method for gasifying and melting the waste comprises the steps of thermally decomposing the waste to gasify, melting its residue, and exhausting the molten residue. The method further comprises the steps of charging the waste, cokes, a substance containing a sulfate or the substance containing the sulfate and lime in a waste gasifying melting furnace 10, and blowing an oxygen-containing gas in a lower part 12 in the furnace in which these charged materials are deposited to gasify and melt the waste.

60. 发明专利

JPH1046224A METHOD FOR MELTING SCRAP 失效
公开(公告)号：JPH1046224A
公开(公告)日：1998-02-17
申请号：JP21423196
申请日：1996-07-25
申请人： NIPPON KOKAN KK
发明人： SHIKADA TSUTOMU , KONISHI TAKESHI , INOKUCHI TAKANORI , NODA HIDETOSHI , MATSUURA MASAHIRO , ARIYAMA TATSURO
IPC分类号： F23G7/12 , B01D53/68 , B09B3/00 , C21B11/02
摘要： PROBLEM TO BE SOLVED: To efficiently reduce hydrogen chloride in exhaust gas without damaging a special treatment, even in the case of supplying chlorine-containing macromolecular resin, in a scrap melting method executed by supplying synthetic resin kind together with pulverized fine coal into a shaft furnace. SOLUTION: In the scrap melting method, the scrap as an iron source and coke are charged into the shaft furnace from a furnace top part and the pulverized fine coal and O2 or O2 -containing gas is blown through combustion burners of tuyere parts, and the synthetic resin material is supplied into the furnace by blowing with the combustion burner and/or by charging from the furnace top part and the scrap is melted with the combustion heat of the pulverized fine coal, etc., and also, the synthetic resin material supplied in the furnace is treated by burning or thermal-decomposing. In such a case, the exhaust gas containing dust exhausted from the furnace top part is made to the accompanied state of the dust for at least 5 sec at

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