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1. 发明专利

JPH10103634A METHOD AND APPARATUS FOR OPERATING MELTING FURNACE FOR WASTE DISPOSAL FACILITY 失效
公开(公告)号：JPH10103634A
公开(公告)日：1998-04-21
申请号：JP25296196
申请日：1996-09-25
申请人： KOBE STEEL LTD
发明人： KAWABATA HIROAKI , HOSODA HIROYUKI , SUYARI MAMORU , ITO TADASHI , MINOURA TADAYUKI
IPC分类号： F23G5/00 , F23G5/027 , F23G5/08 , F23G5/16 , F23G5/32 , F23G5/46 , F23G7/00 , F23J1/00
摘要： PROBLEM TO BE SOLVED: To eliminate necessity of auxiliary fuel or to ensure satisfactory ignitionability and sufficient heat value in a melting furnace while reducing its supply amount by spraying plasma as a heat source in the furnace to ignite combustible component and char of thermal decomposition gas, and melting ash content with its burning heat. SOLUTION: Thermal decomposition gas is turned together with secondary air in a combustion chamber 32, and high heat plasma is sprayed from a plasma torch 46 toward its turning center. Combustible component and char in the gas are ignited by the plasma. Ash content in the gas is melted by heat generated by the combustion and heat of the plasma itself to become slag. Since this plasma is much higher temperature (10000 deg.C at a center, and 2000 deg.C even at a periphery) than that of a flame of the burner, the char can be ignited even without burning auxiliary fuel, and heat value sufficient for melting the content can be compensated with the heat of the plasma itself.

2. 发明专利

JPH10103633A METHOD AND APPARATUS FOR OPERATING FLUIDIZED BED TYPE PYROLYSIS FURNACE IN WASTE MATERIAL PROCESSING FACILITY 失效
公开(公告)号：JPH10103633A
公开(公告)日：1998-04-21
申请号：JP25296096
申请日：1996-09-25
申请人： KOBE STEEL LTD
发明人： KAWABATA HIROAKI , HOSODA HIROYUKI , SUYARI MAMORU , ITO TADASHI , MINOURA TADAYUKI
IPC分类号： F23G5/30 , F23G5/027 , F23G5/46 , F23G5/50
摘要： PROBLEM TO BE SOLVED: To continue an appropriate operation while an air ratio being restricted low and a superior flowing state is being kept. SOLUTION: In a waste material processing facility provided with a fluidized bed type pyrolysis furnace 10 and a melting furnace 12 for burning its discharged gas and for melting ash, a part of the discharged gas at a downstream side of the melting furnace 12 is extracted and then the gas is supplied to the fluidized bed type pyrolysis furnace 10 as fluidizing gas. In addition, this device comprises discharged gas returning pipes 70, 72 for returning the discharged gas to the fluidized bed type pyrolysis furnace 10 and a feeding means such as a discharged gas blower 74 or the like.

3. 发明专利

JPH06137533A COMBUTION CONTROLLER FOR FLUIDIZED BED TYPE INCINERATOR 失效
公开(公告)号：JPH06137533A
公开(公告)日：1994-05-17
申请号：JP29154492
申请日：1992-10-29
申请人： KOBE STEEL LTD
发明人： ITO TADASHI , KAWABATA HIROAKI
IPC分类号： F23G5/30 , F23C10/00 , F23G5/50
摘要： PURPOSE:To provide a combustion controller for fluidized bed type incinerator in which complete combustion is performed by mixing secondary air in a high efficiency in a simple structure. CONSTITUTION:A fluidized bed type incinerator for gasifying.burning matter to be incinerated with primary air, mixing to completely burn unburned gas generated thereby with secondary air in a combustion chamber 3 comprises a secondary air supply system so formed as to arrange a swirler 15 in a nozzle 13 to swirl to inject the secondary air of a high pressure of 1000mmAq or more preheated to a high temperature and to direct it toward a primary combustion gas flow from a top into the chamber 3, secondary air supply nozzles 13 provided in number of a ratio of one per 5.0m of a horizontal sectional area of the incinerator and a combustion controller for so forming the swirlers 15 that the swirler number represented by a predetermined formula is 0.6 or larger.

4. 发明专利

JPH05317832A METHOD FOR CALCINING INCINERATION ASH OF WASTE 失效
公开(公告)号：JPH05317832A
公开(公告)日：1993-12-03
申请号：JP13266492
申请日：1992-05-25
申请人： KOBE STEEL LTD
发明人： KAWABATA HIROAKI , ITO TADASHI
IPC分类号： B09B3/00
摘要： PURPOSE:To facilitate the calcination of the green pellets molded from the incineration ashes of municipal refuse and to prevent the formation of large lumps by the fusion of the calcined products at the time of calcination. CONSTITUTION:Surface layers S consisting of the powder and granular materials made of sewer sludge incineration ashes or CaO of high basicity having the high calcination temp. higher than the calcination temp. of the green pellets P consisting of the incineration ashes of the municipal refuse and a high m.p. are formed on the surfaces of these green pellets. The green pellets P are then calcined at the temp. between the calcination temp. of the green pellets and the calcination temp. of the powder and granular materials, by which the calcination temp. width thereof is widened and the conditions for setting the calcination temp. by an incineration ash sintering device are made less strict and, therefore, the calcination is correspondingly facilitated. In addition, the surface layers S are formed on the surfaces and, therefore, the fusion of the calcined products of the green pellets P to each other do not arise. The surface layers S are of course removed after the end of the calcination and the powder and granular materials of the removed surface layers are recycled.

5. 发明专利

JPH0435676B2 失效
公开(公告)号：JPH0435676B2
公开(公告)日：1992-06-11
申请号：JP15377588
申请日：1988-06-21
申请人： KOBE STEEL LTD
发明人： YOSHIGAE TAKEO , SUZUKI TOMIO , KITAO YOSHIAKI , YAMAZAKI KEIICHI , TSUNETO YASUHIRO , MATSUDA MASAO , TAKEUCHI TOORU , ITO TADASHI
IPC分类号： F27B1/00 , F27B1/26 , F27D19/00

6. 发明专利

JPH0424409A COMBUSTION CONTROL METHOD OF INCINERATOR AND APPARATUS THEREFOR 失效
公开(公告)号：JPH0424409A
公开(公告)日：1992-01-28
申请号：JP12785590
申请日：1990-05-16
申请人： KOBE STEEL LTD
发明人： SUZUKI TOMIO , ITO TADASHI
IPC分类号： F23G5/50
摘要： PURPOSE:To attain combustion with less environmental pollution and no avail by a method wherein the radiant heat generated by the flame in an incineration furnace is detected to monitor the combustion state in the incineration furnace directly, and combustion air is controlled according to the fluctuation in the detected results so as to restrain generation of carbon monoxides and black smoke. CONSTITUTION:In the case a radiant heat ratio B/A is less than 1.2, where A is the radiant heat detected at present and B is the radiant heat detected a specified time period ago, it is decided that the fluctuation in the radiant heat is within a specified range, and combustion air for complete combustion is not fed. And, in the case the radiant ration B/A is not less than 1.2, it is decided that a sharp fluctuation in the radiant heat occurs, and an air flow rate corresponding to the ratio is set. Since the combustion state in a combustion chamber 14 is directly monitored by an optical detector 26, even when a sharp increase in the heat generation amount in the combustion chamber 14 arises, it is instantaneously detected by the optical detector 26. A combustion controller 40 receives signals from the optical detector and outputs control signals to a flow control valve 38 so that combustion air for complete combustion is supplied into combustion gas via a combustion air feed device to completely burn unburnt components.

7. 发明专利

JPS6484014A METHOD FOR MELTING TREATMENT OF INCINERATION ASHES 失效
公开(公告)号：JPS6484014A
公开(公告)日：1989-03-29
申请号：JP24224687
申请日：1987-09-26
申请人： KOBE STEEL LTD
发明人： OKU SHIGERU , KURINISHI YASUO , KASAI TOSHIO , TAKEUCHI TORU , ITO TADASHI
IPC分类号： F23G5/14 , F23G5/00
摘要： PURPOSE:To optimize the efficiency of dewatered sludge treatment by a method wherein dewatered sludge is restrainedly burnt in an incinerator to convert it into exhaust gas and incinerated ashes containing therein unburnt organic substances and then the incineration ashes are melted by heating within a whirling type melting furnace to recover them as slag in a melted state. CONSTITUTION:By carrying out the restrained combustion or the thermal decomposition of dewatered sludge in, for example, a fluidized bed type incinerator 1, the dewatered sludge is converted into exhaust gas G and incineration ashes A containing therein unburnt organic substances. The exhaust gas G and the incineration ashes A are separated, and the incineration ashes A are discharged, together with air for combustion and supplementary fuel, into a current type melting furnace 8 to be burnt and melted by heating, thereby recovering the ashes A as slag in a melted state. That is, the incinerated ashes A containing therein unburnt organic substances, which are discharged together with the exhaust gas G from the incinerator 1 for the dewatered sludge, are arrested and collected to a cyclone 2, and thereafter they are supplied to the melting furnace 8 together with incineration ashes A' which are transferred from a dry type electric dust collector 5. In the melting furnace 8, the incineration ashes A are mixed with air to form a solid and air two-phase flow and are blown into the furnace 8 to be whirled, whereupon they are melted by heating to be turned into slag and recovered.

8. 发明专利

JP2002089810A FACILITY AND METHOD FOR THERMALLY DECOMPOSING AND MELTING WASTE 失效
公开(公告)号：JP2002089810A
公开(公告)日：2002-03-27
申请号：JP2000281516
申请日：2000-09-18
申请人： KOBE STEEL LTD
发明人： ITO TADASHI , HOSODA HIROYUKI
IPC分类号： F23G5/027 , B09B3/00 , F23G5/00 , F23G5/16 , F23G5/30 , F23G5/32 , F23G5/46 , F23J1/00 , F23J15/00
摘要： PROBLEM TO BE SOLVED: To provide a facility for thermal decomposition and melting, which reduces fuel consumption of auxiliary fuel. SOLUTION: A thermal decomposition and melting facility 1 is constituted such that a thermal decomposition gas discharging duct 3 with a high thermostability dust collector 4 being inserted therein, is permitted to communicate, from a fluidized bed thermal decomposition and gasification furnace 2, with a secondary combustion chamber 52 of a revolving current melting furnace 5, that a thermal decomposition gas branch duct 9 with a hot air generating furnace 12 being inserted therein is permitted to communicate, from the downstream side of the dust collector 4 in the duct 3, with a wind box of the furnace 2, and that char containing ash in the thermal decomposition gas recovered by the dust collector 4 is supplied to a melting chamber 51 of the furnace 5. In such a constitution, it is no longer necessary to raise the temperature of the entire thermal decomposition gas containing a large quantity of moisture up to 1200 deg.C or more in the melting chamber 51, and hence consumption of auxiliary fuel can be reduced.

9. 发明专利

JP2001336722A DUST SUPPLYING MACHINE AND WASTE TREATMENT SYSTEM COMPRISING IT 失效
公开(公告)号：JP2001336722A
公开(公告)日：2001-12-07
申请号：JP2000157890
申请日：2000-05-29
申请人： KOBE STEEL LTD
发明人： NIKAIDO HIROHISA , NAKAZAWA SHUICHI , MARUYAMA TOMOHIRO , ITO TADASHI
IPC分类号： B65G33/14 , B09B3/00 , F23G5/027 , F23G5/44 , F23K3/16
摘要： PROBLEM TO BE SOLVED: To eliminate troubles due to compaction of refuse in a compressing section or dehydration. SOLUTION: In a dust supply machine 2 where refuse is carried into a compression channel 30 through rotation of a carrying screw 26 and then compressed and dehydrated, a protrusion is formed on the inner surface of the compression channel 30 by securing a rod member 36 in order to prevent the refuse from rotating integrally with the carrying screw 26. Furthermore, a wall 40 for guiding the refuse to a lower throw-down port 38 is provided at a lower part of a shoot section 24 on the downstream side of the compression section and a through hole 42 for passing moisture is made in the guide wall 40 in order to prevent separated moisture from flowing down into a next thermal decomposition furnace through the throw-down port 38.

10. 发明专利

JPH1089647A METHOD AND APPARATUS FOR RECOVERING HEAT FOR WASTE TREATMENT FACILITY 失效
公开(公告)号：JPH1089647A
公开(公告)日：1998-04-10
申请号：JP24624096
申请日：1996-09-18
申请人： KOBE STEEL LTD
发明人： KAWABATA HIROAKI , HOSODA HIROYUKI , SUYARI MAMORU , ITO TADASHI , MINOURA TADAYUKI
IPC分类号： F23G5/30 , F23C10/02 , F23G5/00 , F23G5/46 , F27D17/00 , F23C11/02
摘要： PROBLEM TO BE SOLVED: To efficiently recover waste heat with a simple and low-cost constitution by extracting part of flowing particles from a thermal decomposition furnace, heat exchanging it with combustion gas exhausted from a gas combustion means, and reducing it to the furnace. SOLUTION: Waste such as introduced urban refuse is dropped on a fluidized bed formed of sand particles 30 on a dispersion plate 26 and primarily burnt. Generated gas is secondarily burnt on a free board 36, and exhausted as thermal decomposition gas from an exhaust port 40. The decomposition gas is further burnt in a melting furnace, and ash content is discharged as slag. Meanwhile, part of the particles 30 in the furnace 10 is extracted to an incombustible material removing unit 22 together with incombustible material mixed therewith. The mixture is applied to a screen in the unit 22, and separated to rough incombustible material and fine sand particles 30. The particles 30 from which the incombustible material is removed is guided from a sand particle inlet to a heat exchanger, and reduced to a lower portion of the furnace 10 in which heat is directly received from high temperature gas introduced into the exchanger.

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