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1. 发明专利

JPH10267262A REGENERATIVE BURNER FURNACE 失效
公开(公告)号：JPH10267262A
公开(公告)日：1998-10-09
申请号：JP7103597
申请日：1997-03-25
申请人： NIPPON KOKAN KK , NIPPON FURNACE KOGYO KK , DAIDO STEEL CO LTD
发明人： FUJII YOSHIMOTO , SASAKI TAKETO , KATSUSHIMA HIROKAZU , HASEGAWA TOSHIAKI , SANO TOSHIYUKI , TAKAHASHI YASUHIRO
IPC分类号： F23L15/02 , C21D1/52 , F27B9/10
摘要： PROBLEM TO BE SOLVED: To uniformalize the combustion state of each burner in a zone, in a furnace wherein a regenerative burner is arranged in side burner arrangement. SOLUTION: A regenerative burner furnace 10 having two burner zones comprises a plurality of regenerative burners 1-1-A, 1-1-B,... arranged in the conveyance direction of an object to be heated, and an orifice plate 50, serving as a quantity of heat regulating means, arranged corresponding to the regenerative burner and regulating a quantity of charged heat of each regenerative burner into a different quantity of charged heat along the interior of a furnace and the conveyance direction of the object to be heated.

2. 发明专利

JPH10265836A METHOD FOR CONTROLLING COMBUSTION IN HEAT-STORAGE TYPE BURNER FURNACE 失效
公开(公告)号：JPH10265836A
公开(公告)日：1998-10-06
申请号：JP7103497
申请日：1997-03-25
申请人： NIPPON KOKAN KK , NIPPON FURNACE KOGYO KK , DAIDO STEEL CO LTD
发明人： FUJII YOSHIMOTO , SASAKI TAKETO , KATSUSHIMA HIROKAZU , HASEGAWA TOSHIAKI , SANO TOSHIYUKI , TAKAHASHI YASUHIRO
IPC分类号： F23N5/20 , C21D1/52 , C21D11/00 , F23L15/02
摘要： PROBLEM TO BE SOLVED: To provide a combustion control method of a heat-storage type burner furnace, in which each burner can stably burn even if individual burner is burnt by changing over in a short time (sec unit). SOLUTION: In the furnace arranging plural pairs of heat-storage type burners in one zone, in the case of using Tpa for replacing time from the exhaust gas to the air in the air-exhaust gas system, Tpg for fuel purging time with the remained pressure of fuel before changing over the combustion, N for number of the burner pairs in the zone and Tc for fuel spouting time of one heat- storage type burner, the fuel spouting time from one heat-storage burner is decided under the relation, Tc =(N-1)×(Tpa +Tpg ) and the heat-storage burner is controlled based on this fuel spouting time.

3. 发明专利

JPH1151369A FURNACE WITH REGENERATIVE BURNER 失效
公开(公告)号：JPH1151369A
公开(公告)日：1999-02-26
申请号：JP20513597
申请日：1997-07-31
申请人： NIPPON KOKAN KK , NIPPON FURNACE KOGYO KK , DAIDO STEEL CO LTD
发明人： FUJII YOSHIMOTO , SASAKI TAKETO , KATSUSHIMA HIROKAZU , SUDO ATSUSHI , SANO TOSHIYUKI , TAKAHASHI YASUHIRO
IPC分类号： F23L15/02 , C21D1/52 , F23C99/00 , F27B9/36 , F23C11/00
摘要： PROBLEM TO BE SOLVED: To improve the lifetime of a facility by providing an interval between a regenerative burner and its opposed wall or combustion capacity of the burner to satisfy a specific formula in the relationship between the interval and the capacity of the burner, thereby performing low Nox combustion. SOLUTION: A width L in a furnace is determined from the relationship between a combustion amount and the length of a flame. And, since the maximum combustion amount is 4000 Mcal/hr, the width L is set to 8 m. And, a regenerative burner 12 is disposed by shifting the burner at both sides so that its nozzles are not opposed. And, an interval L between the burner and its opposed wall or combustion capacity Bc of the burner is set to satisfy the following relation formula in the relationship between the interval L and the capacity Bc of the burner. L>=a.Bc +b.Bc +c.Bc+d>=L/2, where a, b, c and d are coefficients. When a unit of the capacity Bc of the burner is 1000 Kcal/hr, a=9×10 , b=-3×10 , c=0.0025 and d=1.5867, and an allowable range of the coefficient value is ±20%.

4. 发明专利

AU7871901A Heat reservoir 未知
公开(公告)号：AU7871901A
公开(公告)日：2002-02-25
申请号：AU7871901
申请日：2001-08-13
申请人： NIPPON KOKAN KK , NIPPON FURNACE KOGYO KK , NGK INSULATORS LTD
发明人： SUZUKAWA YUTAKA , MORI ISAO , KATSUSHIMA HIROKAZU , KASAI YOSHIYUKI
IPC分类号： F28D17/02 , F28D20/00

5. 发明专利

JPH109562A METHOD FOR DIAGNOSING COMBUSTION STATE 失效
公开(公告)号：JPH109562A
公开(公告)日：1998-01-16
申请号：JP16614196
申请日：1996-06-26
申请人： NIPPON FURNACE KOGYO KK , TOKYO GAS CO LTD
发明人： HASEGAWA TOSHIAKI , TANAKA RYOICHI , HOSHINO TOSHIBUMI , MOCHIDA SUSUMU , KATSUSHIMA HIROKAZU , TAMURA MASAYUKI , TAI HIDEO
IPC分类号： F23N5/18 , F23N5/08 , F23N5/26
摘要： PROBLEM TO BE SOLVED: To diagnose a combustion state by judging at which level a high temperature air combustion is realized and quantitatively detecting oxygen concentration and temperature of oxidizer immediately before a combustion reaction in a furnace in relation of the high temperature air combustion. SOLUTION: CH radical emitting light intensity and C2 radical emitting light intensity are measured. Then, oxygen concentration and temperature of combustion air of oxidizer complicately changing in a furnace immediately before a combustion reaction of hydrocarbon fuel, fuel containing hydrocarbon, or fuel added with the hydrocarbon fuel or hydrocarbon as a marker are estimated from their ratio. Whether the combustion arises high temperature air combustion with extremely low velocity oxidizing exothermic reaction or not can be diagnosed from the ratio of the intensities or at which level the high temperature air combustion is can be diagnosed.

6. 发明专利

JP2000356469A MELTING FURNACE 失效
公开(公告)号：JP2000356469A
公开(公告)日：2000-12-26
申请号：JP16685699
申请日：1999-06-14
申请人： NIPPON FURNACE KOGYO KK , ROZAI KOGYO KK
发明人： HASEGAWA TOSHIAKI , KATSUSHIMA HIROKAZU , SHIMOMURA HIROKIYO
IPC分类号： C22B9/16 , C22B21/06 , F27B3/06 , F27D1/18 , F27D7/02 , F27D17/00
摘要： PROBLEM TO BE SOLVED: To shorten a melting time. SOLUTION: A movable wall 3 making the height of the furnace ceiling variable according to an advance of melting is provided in a furnace body 1. The movable wall 3 is moved vertically according to the state of the advance of melting of melting materials so that the effective capacity of a combustion chamber may not be enlarged. By keeping a space between the solid surface of the melting materials and the movable wall 3 to be prescribed practically without giving a large variation thereto, the average velocity of passing of high-temperature gas through an in-furnace section is maintained at least or increased as occasion demands and also geometric factors of the surface of the melting materials and a solid reflecting surface (furnace ceiling surface) are increased so that the heat of radiation reaching the melting materials be increased. Thereby lowering of a heating speed is prevented.

7. 发明专利

JPH04300058A INERT GAS SUPPLY DEVICE FOR TANDISH 失效
公开(公告)号：JPH04300058A
公开(公告)日：1992-10-23
申请号：JP8733191
申请日：1991-03-28
申请人： NIPPON FURNACE KOGYO KK , MITSUBISHI STEEL MFG
发明人： HASEGAWA TOSHIAKI , KATSUSHIMA HIROKAZU , FUKUZUMI TATSUO , UENO HIDEO , HARA MAKOTO
IPC分类号： B22D11/10
摘要： PURPOSE:To quickly replace the air in a tandish which does not contain non- inert gas with inert gas, and also, to stably maintain its state. CONSTITUTION:The device is constituted so that from the periphery of an inert gas nozzle 2 for ejecting inert gas at a high speed to a tandish, inert gas 5 is ejected at a lower speed than the inert gas 4 while surrounding it. For instance, a speed of a flow of the inert gas 5 of a low speed for surrounding a flow of the inert gas 4 of a high speed is set to 1/10-1/20 of the inert gas 4 of a high speed.

8. 发明专利

JPH10122556A COMBUSTION CONTROL METHOD FOR INDUSTRIAL FURNACE WITH BURNER APPLIED AS HEATING SOURCE 失效
公开(公告)号：JPH10122556A
公开(公告)日：1998-05-15
申请号：JP27506896
申请日：1996-10-17
申请人： NIPPON FURNACE KOGYO KK
发明人： HASEGAWA TOSHIAKI , TANAKA RYOICHI , KATSUSHIMA HIROKAZU
IPC分类号： F23N5/00
摘要： PROBLEM TO BE SOLVED: To make a mean distribution of temperature within a furnace and further to enable an item to be heated to be uniformly heated by a method wherein one burner of a plurality of installed burners is selected optionally and combusted for a short period of time, and after this operation one burner is also optionally selected to perform a repeated random heated operation for a continuous combustion for a short period of time. SOLUTION: One burner 2 is optionally selected from a plurality of installed burners 2 and combustion is carried out for a short period of time. After this operation, an item to be heated is further heated while a random heating for performing combustion for a short period of time is performed repeatedly. This random heating control flow is performed by a sequence control with an adjusting meter 5 or a computer control as one part of an automatic combustion control sequence such as a PID control or a fuzzy control or the like. Accordingly, a position of a flame formed within a furnace 1 is changed at random within a short period of time so as to increase a temperature within the furnace through a mean temperature distribution in which a local occurrence of high temperature region is restricted. Due to this fact, the item to be heated is uniformly heated and a heating processing amount is increased.

9. 发明专利

JPH10281665A INDUSTRIAL FURNACE AND ITS HEATING CONTROL METHOD 失效
公开(公告)号：JPH10281665A
公开(公告)日：1998-10-23
申请号：JP8409997
申请日：1997-04-02
申请人： NIPPON FURNACE KOGYO KK
发明人： HASEGAWA TOSHIAKI , TANAKA RYOICHI , KATSUSHIMA HIROKAZU
IPC分类号： F23L15/02 , F27D7/04
摘要： PROBLEM TO BE SOLVED: To uniformly heat material to be heated by leveling a temperature distribution in a furnace. SOLUTION: An industrial furnace includes a plurality of ports 2 which are provided with heat storage bodies 7 and supply and discharge gas through the heat storage bodies 7, a circulator 6 which rises the pressure of furnace gas which is temporarily discharged out of the furnace from the port 2 through the heat storage bodies 7 by means of a circulating fan 9 and again blows off the furnace gas into the furnace from the different ports through the heat storage bodies 7 connected with the ports, control means 5 which selects suction ports and blow-off ports from a plurality of ports 2 at random and switches positions where the furnace gas is discharged out of the furnace and positions where the furnace gas is blown off into the furnace at random in a short time, and a heat source. The heat source comprises a plurality of burners. Material to be heated is heated such that some burners are selected from a plurality of burners at random and are burnt for a short time and thereafter some burners are again selected at random and are burnt for a short time and such a random burning is repeated.

10. 发明专利

JPH1038215A BURNER COMBUSTION METHOD 失效
公开(公告)号：JPH1038215A
公开(公告)日：1998-02-13
申请号：JP16613096
申请日：1996-06-26
申请人： NIPPON FURNACE KOGYO KK
发明人： TANAKA RYOICHI , HASEGAWA TOSHIAKI , HOSHINO TOSHIBUMI , MOCHIDA SUSUMU , KATSUSHIMA HIROKAZU
IPC分类号： F23C99/00 , F23C11/00
摘要： PROBLEM TO BE SOLVED: To provide a burner combustion method wherein there is accompanied by an oxidization heat production reaction where a heat production rate is enough low as compared with ordinary combustion, and a fire flame is formed stably in a wide space, and further a fire flame volume is very greatly stabilized and combusted. SOLUTION: There are brought into contact high temperature diluted air that is very lower than ordinary air at least before a combustion reaction and above combustion stabilization limit temperature of mixed air at that oxygen concentration or a corresponding oxidizing agent and a fuel in a furnace, which are therefore stably combusted under an oxidization heat production reaction at a very low speed. The combustion is securely achieved by adding a hydrocarbon fuel or hydrocarbon as a marker when the hydrocarbon fuel is used as a fuel or even when a fuel not including hydrocarbon is used, and keeping the combustion in the state where it is green colored.

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