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21. 发明专利

JPH02282610A PREVENTION OF DUST ATTACHING TO OUTLET OF SLUDGE MELTING FURNACE 失效
公开(公告)号：JPH02282610A
公开(公告)日：1990-11-20
申请号：JP10025989
申请日：1989-04-21
申请人： NIPPON KOKAN KK
发明人： SUGIYAMA NOBUYUKI
IPC分类号： F23G5/24
摘要： PURPOSE:To lower the temperature near a furnace wall brickwork, solidify molten sludge, prevent slag deposit to the furnace wall, and make it possible to operate continuously by blowing in low pressure steam from the furnace top section of the combustion exhaust gas outlet section of a melting furnace. CONSTITUTION:The periphery of a combustion gas discharge port 3 is at about 1400 deg.C and the slag is in molten state. In this state slag deposit 7 are attached to the combustion gas discharge port 3 and it will finally close the combustion gas discharge port 3 of a melting furnace. Now, if the brick faces are cooled by blowing low pressure steam of an exhaust gas heat boiler from a stem pipe 6 provided through the brickwork of the combustion gas discharge port 3, the temperature near the furnace wall at the combustion gas discharge port 3 drops by about 200 deg.C and it is possible to avoid the slag deposit and it is possible to operate the furnace continuously.

22. 发明专利

JPH01143691A BIOMEMBRANE FILTER 失效
公开(公告)号：JPH01143691A
公开(公告)日：1989-06-06
申请号：JP30010687
申请日：1987-11-30
申请人： NIPPON KOKAN KK
发明人： SUGIYAMA NOBUYUKI
IPC分类号： C02F3/06
摘要： PURPOSE:To prevent a net from being clogged at a time of backwash by directly joining both an annular material in which slits for introducing and discharging raw water and backwash water are bored on the circumference of a disk and a driving motor in the upper part of a packed tower. CONSTITUTION:An annular material 1 in which slits 2 are bored on the circumferential part of a disk part 6 is connected to a raw water pipe 5 in the upper part of a packed tower 21 provided with a packed bed 23 having a packed filter medium 22. Both the rotation axis 3 of the annular material 1 and a driving motor 4 provided to the upper part of the packed tower 21 are connected and thereby the disk part 6 of the annular material 1 can be rotated. Raw water introduced through the raw water pipe 5 is injected through the slits 2 provided to the circumferential part of the disk part 6 of the annular material 1 and spread on the packed bed 23 having the packed filter medium 22. Thereby outflow of the packed filter medium is prevented.

23. 发明专利

JPH1172213A METHOD AND DEVICE FOR PREVENTING ADHESION OF SLAG IN MELTING FURNACE HAVING SECONDARY COMBUSTION CHAMBER 失效
公开(公告)号：JPH1172213A
公开(公告)日：1999-03-16
申请号：JP23400097
申请日：1997-08-29
申请人： NIPPON KOKAN KK
发明人： HOSHINO YASUSHI , SUGIYAMA NOBUYUKI , MATSUI TAKEYOSHI
IPC分类号： F23L15/02 , F23G5/00 , F23G5/24 , F23J1/00
摘要： PROBLEM TO BE SOLVED: To prevent molten slag from being solidified and sticking to the inner wall of a furnace, by mixing the air which is alternately heated by heat storage burners with fuel to blow it into the secondary combustion chamber. SOLUTION: Piping 13 from a heat storage burner mechanism 12 and a fuel pipe 14 are connected to the secondary air outlet 7 from which the secondary air is blown into the secondary combustion chamber 6. Burners 16 and 17 of the heat storage burner mechanism 12 are alternately ignited and burned. The inside of the combustion chamber 15 is gradually warmed up, and it is brought to high temperatures in the range of about 800 deg.C to 1,000 deg.C. The air which became a high temperature is mixed with the fuel from the fuel pipe 14 at the secondary air outlet 7 through the piping 13, and then the combustion gas, which has a sufficiently high remaining oxygen concentration at a slag melting point or higher, is blown into the secondary combustion chamber 6. Thereby, cooling of slag does not occur at the secondary air outlet 7, and the molten slag does not stick to the inner wall surface 1b of the furnace.

24. 发明专利

JPH10114554A EQUIPMENT FOR PRODUCING SLAG AGGREGATE 失效
公开(公告)号：JPH10114554A
公开(公告)日：1998-05-06
申请号：JP26453196
申请日：1996-10-04
申请人： NIPPON KOKAN KK
发明人： SUGIYAMA NOBUYUKI , MATSUI TAKEYOSHI , HOSHINO YASUSHI
IPC分类号： B09B3/00 , C04B5/02
摘要： PROBLEM TO BE SOLVED: To provide the equipment capable of appropriately performing cooling or reheating of a melt of raw material ash or the like to a temp. within a range suitable for the formation and growth of crystal nuclei. SOLUTION: In this equipment, a melt solidification treatment device 31 is composed of: a solidification treatment chamber 32 that is subjected to heat insulation lining and has a slit on each of the side walls in the longitudinal direction and also a rectangular crosssectional shape; a chain conveyor 34 that is provided with two roller chains traveling on rails placed along the both outsides of the side walls of the solidification treatment chamber 32 respectively, and slag containers 33 each provided with a flange which extends through the both slits and from the side walls of the chamber 32 to their outsides and the both front ends of which are fitted to the roller chains of the chain conveyor 34 respectively, so that the slag containers 33 are able to travel within the solidification treatment chamber 32. Further, the device 31 is also provided with a melt charging port that is placed in the upper part of the front end section of the solidification treatment chamber 32 and is used for connecting the chamber 32 to a melting furnace 30, plural gas blowing ports 48 and plural gas blowers 52, both of which are placed in the longitudinal direction of the solidification treatment chamber 32 and used for forming plural zones having different atmospheric temp. from each other, sensors 53 for measuring slag surface temp. in the slag containers 33 respectively, and a controller 44 for controlling the surface temp. of the moving slag.

25. 发明专利

JPH0320511A BURNER OF MELTING FURNACE 失效
公开(公告)号：JPH0320511A
公开(公告)日：1991-01-29
申请号：JP15229189
申请日：1989-06-16
申请人： NIPPON KOKAN KK
发明人： INOKAWA NOBURO , SUGIYAMA NOBUYUKI , SUZUKI MINORU
IPC分类号： F23G5/24 , F23C5/08 , F23G5/08 , F23G5/32 , F23J9/00
摘要： PURPOSE:To raise the temperature of the tap hole rapidly when it drops temporarily by installing a sludge burner and an auxiliary burner at positions that are lower than the center of the height of the furnace and at the same time mounting one or two of those two burners on a rotating body which rotates round a shaft which penetrates the furnace. CONSTITUTION:A sludge burner 4 and an auxiliary burner 5 are both provided lower than the center of the height of the main body 1, and object to be burned which are led to the sludge burner 4 are jetted out towardS the circumferential wall of the inside of the main body 1 with the fuel from the auxiliary burner 5 and they burn in rotation. Here, if there is a variation in the quantity of supply or ingredients of the objects to be burned, the temperature of a tap hole 3 falls temporarily. When this temperature fall is detected by a thermocouple or a radiation pyrometer, an electric motor 54 is driven and a rotating body 52 rotates round a penetrating shaft of the furnace wall anticlockwise in the angular range theta, and the position of the burner 50 of the auxiliary burner 5 moves. On the extension of the line through the burner 50 a tap hole 3 sits, so that the fuel is jetted out from the auxiliary burner 5 towards the area near the tap hole 3. Then the tap hole 3 is heated by the combustion of the fuel from the burner 50 and the tap hole temperature rapidly returns to its initial temperature. When the temperature of the tap hole 3 is recovered, the auxiliary burner 5 returns to its normal position.

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