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1. 发明专利

JP2003146784A METHOD OF MANUFACTURING MELT SOLIDIFIED BODY 审中-公开
公开(公告)号：JP2003146784A
公开(公告)日：2003-05-21
申请号：JP2001342421
申请日：2001-11-07
申请人： NIPPON KOKAN KK , NKK PLANT ENG CORP
发明人： NAKAHARA KEISUKE , NANJO YUKIO , UYAMA KIYOSHI
IPC分类号： B09B3/00 , B09C1/06 , C02F1/58 , C02F11/10 , C05G1/00
摘要： PROBLEM TO BE SOLVED: To provide a method of manufacturing a melt solidified body which is hygienically excellent and is usable as a fertilizer by utilizing the ammonium magnesium phosphate formed in treating sewage and wastes of sludge, etc., as raw materials. SOLUTION: This method of manufacturing the melt solidified body has a mixing process step of using the ammonium magnesium phosphate obtained by injecting magnesium ions into the waste water produced in a treatment process step for the slurry-like sludge produced in cleaning the sewage and subjecting the waste water to crystallization and separation and the wastes containing a silicon compound as the raw materials and mixing these, a melting process step of melting the mixture formed in the mixing process step at >=1,350 deg.C in the presence of oxygen and a cooling and solidifying process step of forming the melt solidified body by cooling and solidifying the melt formed in the melting process step.

2. 发明专利

JP2001130903A METHOD FOR RECOVERING PHOSPHATE SALT 失效
公开(公告)号：JP2001130903A
公开(公告)日：2001-05-15
申请号：JP2000006295
申请日：2000-01-12
申请人： NKK PLANT ENG CORP , NIPPON KOKAN KK
发明人： UYAMA KIYOSHI , NAKAHARA KEISUKE
IPC分类号： B09B3/00 , C01B25/37 , C01G49/00
摘要： PROBLEM TO BE SOLVED: To provide a method for recovering phosphate salt, capable of efficiently recovering the phosphate salt from incinerated ash, fly ash, etc. at a low cost. SOLUTION: This method for recovering the phosphate salt comprises a dissolving process where a solution containing acid is added to the incinerated ash and/or the incinerated fly ash containing phosphate radicals to adjust a pH of the solution to be 1.6 or less so that the phosphate radicals contained in the ashes is dissolved in the solution containing the acid, a residue-separating process where insoluble residues in the solution containing the acid is separated, and an alkaline component-charging process where an alkaline component is added to the solution separated from the residues so that the pH of the solution is adjusted to be in the range of 1.8-2.2, wherein an iron compound-charging process for charging an iron compound is performed at any time before the alkaline component-charging process is completed and further a recovering process for recovering iron phosphate is performed after the alkaline component- charging process is completed.

3. 发明专利

JP2003164896A TREATMENT METHOD AND TREATMENT EQUIPMENT FOR ORGANIC SUBSTANCE 审中-公开
公开(公告)号：JP2003164896A
公开(公告)日：2003-06-10
申请号：JP2001369014
申请日：2001-12-03
申请人： NIPPON KOKAN KK , NISHIO NAOMICHI
发明人： TSUBONE TOSHIAKI , NAKAHARA KEISUKE , TSUJI TAKESHI , FUJIWARA SHIGEKI , NISHIO NAOMICHI , NAKASHIMADA YUTAKA
IPC分类号： B09B3/00 , C02F11/00 , C02F11/02
摘要： PROBLEM TO BE SOLVED: To provide a treatment method and treatment equipment for organic substances by which a high recovery rate of organic acids can be obtained and the amount of the wastes to be produced can be reduced because a high solid solubization rate and decomposition of organic matter can be obtained. SOLUTION: This treatment equipment is furnished with solubilizing equipment 1 which yields soluble organic matter by solubilizing the solid organic matter in the organic substances by using alkaline treatment, aerobic treatment equipment 2 which treats the substances obtained by the solublizing equipment 1 under microaerobic or aerobic conditions, acid fermentation equipment 3 which causes the acid fermentation of the substances obtained from the aerobic treatment equipment 2 by anaerobic microorganisms, a solid-liquid separator 4 which separates the substances obtained from the acid fermentation equipment 3 to a solid component and a liquid component and organic acid recovering equipment 5 which recovers the organic acids from the liquid component obtained from the solid-liquid separator 4. The solid component obtained from the solid-liquid separator 4 is returned to the solubilizing equipment 1. COPYRIGHT: (C)2003,JPO

4. 发明专利

JP2001321749A METHOD FOR TREATING ORGANIC SLUDGE 失效
公开(公告)号：JP2001321749A
公开(公告)日：2001-11-20
申请号：JP2000146517
申请日：2000-05-18
申请人： NIPPON KOKAN KK
发明人： NAKAHARA KEISUKE , NANJO YUKIO , UYAMA KIYOSHI
IPC分类号： F23J1/00 , B09B3/00 , C02F11/00 , F23G7/04
摘要： PROBLEM TO BE SOLVED: To provide a method for treating an organic sludge by which a slag containing a small amount of heavy metal and showing a low level of loading on the environment is obtained. SOLUTION: In the method for dehydrating the organic sludge, then incinerating the dehydrated sludge and melting the incineration ash, the incineration ash impregnated with the chloride of alkaline metal and/or the chloride of alkaline earth metal is loaded into a gyrating flow-type melting furnace 41 and melted.

5. 发明专利

JP2001180987A INSTALLATION FOR COOLING AND SOLIDIFYING MOLTEN SLAG 失效
公开(公告)号：JP2001180987A
公开(公告)日：2001-07-03
申请号：JP36852699
申请日：1999-12-27
申请人： NIPPON KOKAN KK
发明人： NAKAHARA KEISUKE , TADA MITSUHIRO , YABUTA KAZUYA , YAMAMOTO HIROSHI , SHINAGAWA TAKUYA , AKASHI TETSUO , KIMURA NORIFUMI
IPC分类号： F23J1/08 , C04B5/00 , C21B3/08 , C21C5/28 , C21C7/00 , C22B7/04 , F27D15/00 , F27D15/02
摘要： PROBLEM TO BE SOLVED: To provide an installation for cooling and solidifying molten slag with high operating capacity by which cooled slag can easily be peeled off and slag eliminated of salts and metals can be obtained. SOLUTION: This installation is equipped with a storage tank 10 to feed molten slag discharged from the blast furnace onto the cylindrical rotors 20a and 20b after storage, being constituted so that the slag 61 adhering to the rotors 20a and 20b remains plastic by adjusting the revolution of the rotors 20a and 20b, and a secondary coolers 30a and 30b are also equipped to cool the slag peeled off the rotors 20a and 20b by spraying a coolant.

6. 发明专利

JP2001097748A APPARATUS FOR COOLING AND SOLIDIFICATION OF MOLTEN SLAG 失效
公开(公告)号：JP2001097748A
公开(公告)日：2001-04-10
申请号：JP27595899
申请日：1999-09-29
申请人： NIPPON KOKAN KK
发明人： NAKAHARA KEISUKE , YAMAMOTO HIROSHI , SHINAGAWA TAKUYA , YABUTA KAZUYA , TERAMOTO TOYOKAZU
IPC分类号： C04B5/00 , C04B5/02
摘要： PROBLEM TO BE SOLVED: To provide an apparatus for the cooling and solidification of molten slag capable of sufficiently utilizing the processing capacity of the apparatus and enabling the treatment of a large amount of molten slag. SOLUTION: This cooling and solidifying apparatus for molten glass solidifies a molten slag by supplying the slag on a cooled cylindrical rotor. The apparatus is provided with a pair of cylindrical rotors 10a, 10b placed in horizontal state and contacting the outer circumferences with each other and rotating in the direction to move the contacting part of the outer circumference upward, slag- peeling devices 13a, 13b placed along the lower outer circumference of the rotors 10a, 10b and a cooled fluid blowing devices 20a, 20b placed under a side of the rotors 10a, 10b and quenching the insufficiently cooled and non- solidified slag 73 peeled off from a side of the rotors 10a, 10b.

7. 发明专利

JP2000247616A FACILITIES AND METHOD FOR RECOVERING PHOSPHORUS FROM WASTE 失效
公开(公告)号：JP2000247616A
公开(公告)日：2000-09-12
申请号：JP5373899
申请日：1999-03-02
申请人： NIPPON KOKAN KK , NIPPON CHEMICAL IND
发明人： MATSUI SATOSHI , NAKAHARA KEISUKE , YAMAMOTO HIROSHI , SHINAGAWA TAKUYA , TABEI SEIKICHI , KUWAYAMA MICHIO
IPC分类号： B09B3/00 , C01B25/027 , C01B25/047 , C01B25/18 , F23J15/00
摘要： PROBLEM TO BE SOLVED: To provide facilities and a method for recovering phosphorus from waste, which increases the contact probability of a phosphorus compound contained in the waste with carbon supplied from a carbon source. SOLUTION: The facilities for recovering phosphorus from the waste possesses a granulating means 31 for forming a granular material containing the waste containing phosphorus or the phosphorus compound and the carbon source, a heating furnace 1, in which the granular material is supplied and a high temp. gas containing phosphorus vaporized by heating the granular material in a reducing atmosphere is generated, and phosphorus recovering means 12, 13, 20-22 for recovering the vaporized phosphorus as white phosphorus or a phosphorus compound from the high temp. gas.

8. 发明专利

JP2000199620A INCINERATING HEAT TREATING FURNACE FOR REFUSE 失效
公开(公告)号：JP2000199620A
公开(公告)日：2000-07-18
申请号：JP360999
申请日：1999-01-11
申请人： NIPPON KOKAN KK
发明人： SUZUKI MINORU , FUJISAWA YOSHINARI , NAKAHARA KEISUKE , TERATSUJI KAZUHIRO
IPC分类号： F23L7/00 , F23G5/00 , F23G5/027 , F23G5/16 , F23G5/44 , F23J1/00
摘要： PROBLEM TO BE SOLVED: To realize long time stabilized operation of a heat treating furnace for ash while enhancing the performance and providing multiple functions, and to save energy and reduce pollution of a total system from incineration of refuse to heat treatment of ash thereof. SOLUTION: Incineration ash 4 produced through combustion is fed through a tapered flue 5 and a section 6 for detecting and removing a matter unsuitable for melting into a heat treating furnace for ash 8 where it is heat treated to produce molten slag 9. A gas outlet 20 is provided in the heat treating furnace 8 and mixture gas of combustible gas generated in a refuse incinerator (unburnt gas in the incinerator) and high temperature air is blown into the furnace at high velocity. The high temperature mixed gas blown into the furnace produces a swirling flame or a tubular flame in the heat treating furnace 8 for ash. Inner wall of the furnace is heated substantially uniformly by radiation from these flames or direct heat transfer thus suppressing partial solidification of dust or slag or burn out trouble due to overheat of the inner wall.

9. 发明专利

JPH11244810A OPERATION OF MELTING FURNACE FOR MELTING INCINERATION RESIDUE 失效
公开(公告)号：JPH11244810A
公开(公告)日：1999-09-14
申请号：JP4740998
申请日：1998-02-27
申请人： NIPPON KOKAN KK
发明人： NAKAHARA KEISUKE , MATSUI SATOSHI , SHINAGAWA TAKUYA
IPC分类号： F23G5/00 , B09B3/00 , F23J1/00
摘要： PROBLEM TO BE SOLVED: To easily disappear a molten salt layer generated in a melting furnace by charging a component modifying material containing Ca and/or Mg when the molten salt layer is generated in the furnace or is estimated to be generated at the time of executing the operation of the melting furnace by charging an incineration residue in the melting furnace. SOLUTION: At the time of melting a municipal refuse incineration residue, the incineration residue is melted using the melting furnace 20, current is applied between electrodes 21 dipped into the molten material of the molten incineration residue to heat and melt the molten material by the electric resistance heat. While the molten material is retained in the furnace and then discharged, each component is separated by the difference of the specific gravity. At this time, when the molten salt layer 40 is generated, the component modifying material containing Ca and Mg is charged. The molten salt layer 40 is gradually decreased and disappeared by charging the component modifying material. The separated 2 layers, that is a molten slag 41 and molten metal 42 are separated and discharged and the molten slag 41 is sent to a cooling process 30 to be rapidly cooled up to the transition temp., at which the molten slag 41 becomes amorphous.

10. 发明专利

JPH10267234A MELTING FURNACE FOR WASTE INCINERATION RESIDUE AND MELTING METHOD THEREOF 失效
公开(公告)号：JPH10267234A
公开(公告)日：1998-10-09
申请号：JP9136297
申请日：1997-03-27
申请人： NIPPON KOKAN KK
发明人： NAKAO TSUYOSHI , NAKAHARA KEISUKE , SHINAGAWA TAKUYA
IPC分类号： F23G5/00 , F23J1/00 , F27B3/08 , F27D3/15
摘要： PROBLEM TO BE SOLVED: To enable stable operation with the prevention of a short circuiting between an electrode and a melt salt layer by dividing an upper space of the body of a melting furnace into a supply space and an exhaust space with a middle partition wall to allow efficient volatilization of a melt salt produced. SOLUTION: The space above the top surface of a melt slag layer 7 in a furnace tank (furnace body) 1 is divided by a middle partition wall 6 into a supply space 9 (internal atmosphere temperature of furnace: 600 deg.C or lower) on the side of a supply port 3 and an exhaust space 10 (internal atmosphere temperature of furnace: 1,300 deg.C or higher) on the side of an exhaust port 10. On the maximum limit basis, one electrode 2 is arranged on the side of the supply space 3 with respect to the middle partition wall 6 and the other electrode 2 is arranged on the side of the exhaust space 10. The incineration residue fed from a support port 3 expands onto the top surface of a melt slag but not beyond the partition wall 6 and is allowed to stay in the supply space 9. Thus, as the top surface of the melt slag is covered with none of the incineration residue in the exhaust space 10, the exhaust space 10 boosts up to a high temperature by heat from the melt slag to volatilize a melt salt thereby allowing avoiding of the shorcircuiting between the melt salt and the electrode 2.

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