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21. 发明专利

JPH11257617A WASTE DIRECT MELTING FURNACE AND OPERATION METHOD THEREFOR 失效
公开(公告)号：JPH11257617A
公开(公告)日：1999-09-21
申请号：JP5653298
申请日：1998-03-09
申请人： CHIYODA CHEM ENG CONSTRUCT CO
发明人： UCHIDA MINORU , KAJI HITOSHI
IPC分类号： F23G5/00
摘要： PROBLEM TO BE SOLVED: To provide a waste direct melting furnace without formation of a large cavity in a thermal decomposition region. SOLUTION: Nozzles 12 to blow off combustion support gas are respectively arranged in a plurality of combustion support gas supply ports 10 formed in a moving phase type furnace 1. A combustion support gas supply device 13 to supply combustion support gas to the nozzle 12 changes the opening of a flow rate control valve 17 according to a control command from a control device 19, and fluctuates a supply amount of combustion support gas supplied in the mobile layer type 1. When the supply amount of the combustion support gas is fluctuated, a low temperature fluctuation and a pressure fluctuation are caused to occur to the internal part and the periphery of a cavity formed in a thermal decomposition region 3. Due to the fluctuations, a dynamic balance between the internal part and the periphery of the cavity is brought into an unbalanced state and the cavity disappears in early stage.

22. 发明专利

JPH11230519A WASTE DIRECT MELTING FURNACE AND OPERATION METHOD THEREOF 失效
公开(公告)号：JPH11230519A
公开(公告)日：1999-08-27
申请号：JP3297198
申请日：1998-02-16
申请人： CHIYODA CHEM ENG CONSTRUCT CO
发明人： KAJI HITOSHI
IPC分类号： F23G5/00 , F23G5/027
摘要： PROBLEM TO BE SOLVED: To provide a waste direct melting furnace which keeps a combustion support gas supply port from being partially closed by a molten slag solidified. SOLUTION: Burners 12... are provided to simultaneously blow out a combustion support gas and a fuel separately to a plurality of combustion support as ports 10... formed at a moving bed furnace 1. The burners 12 is each provided with a fuel supply device unit 20 to supply the fuel to the burner 12 and a combustion support gas supply device unit 33 to supply to supply the combustion support gas to the burner 12. The combustion support gas supply devices 33 and the fuel supply device 22 supply the combustion support gas and the fuel the burners so that a flame is blown out of the burners 12 to block the combustion support gas supply ports 10 from being partially or wholly closed by a molten slag dropping down from a combustion melting zone 4.

23. 发明专利

JPH11132432A DIRECT MELTING FURNACE 失效
公开(公告)号：JPH11132432A
公开(公告)日：1999-05-21
申请号：JP31273597
申请日：1997-10-29
申请人： CHIYODA CHEM ENG CONSTRUCT CO
发明人： KAJI HITOSHI
IPC分类号： F23G7/00 , F23G5/02 , F23G5/44
摘要： PROBLEM TO BE SOLVED: To obtain a direct furnace in which a strong dense layer dome can be formed on a lower part of a thermal decomposition zone at all times, and hence stable waste gasifying/melting processing is achieved and durability of a furnace wall is greatly improved. SOLUTION: A vertical shaft furnace is adapted such that a charge port for waste is provided in an upper part or a side trunk part, and an introduction pipe 27 for oxygen containing gas is connected with a bottom whereby there are formed therein in succession from the charge port to a lower portion a drying zone, a thermal decomposition zone 21, and a combustion/melting zone 22. In the vertical shaft furnace, a direct trunk part 23 having a smaller cross section than those of the thermal decomposition zone and the combustion/melting zone is provided between the thermal decomposition zone 21 and the combustion/ melting zone 22, and the direct trunk part 23 is formed with a metal material in which a cooling medium is introduced.

24. 发明专利

JPH1192192A PRODUCTION OF ARTIFICIAL AGGREGATE 失效
公开(公告)号：JPH1192192A
公开(公告)日：1999-04-06
申请号：JP25024297
申请日：1997-09-16
申请人： CHIYODA CHEM ENG CONSTRUCT CO
发明人： KAJI HITOSHI
IPC分类号： B09C1/06 , C04B14/02 , C04B14/06 , C04B14/10 , C04B18/16 , C04B18/18
摘要： PROBLEM TO BE SOLVED: To provide a process for cost effectively producing artificial aggregate having properties necessary as aggregate. SOLUTION: This process for producing the artificial aggregate consists in producing the artificial aggregate by using at least one kind among building waste materials produced from the disassembly of buildings, soil, such as pozzolanic viscous soil, polluted soil polluted by pollutants and oily soil contg. oily materials as raw materials, melting these raw materials with combustible wastes as fuel, and cooling the melt. In such a case, the raw materials and the combustible wastes are mixed to obtain a mixture. Thus mixture is directly charged into a direct melting type incineration furnace where the mixture is heated and melted by the combustible components in the mixture as fuel. The resulted melt is cooled, by which the artificial aggregate is formed.

25. 发明专利

JPH0968310A INDUSTRIAL FURNACE WITH HEAT RECOVERY TYPE COMBUSTION EQUIPMENT AND COMBUSTION CONTROL METHOD THEREFOR 失效
公开(公告)号：JPH0968310A
公开(公告)日：1997-03-11
申请号：JP22313895
申请日：1995-08-31
申请人： CHIYODA CHEM ENG CONSTRUCT CO , FURNESS TECHNO KK
发明人： KAJI HITOSHI , TSUTSUI KEISUKE , YOSHIOKA TOSHIAKI , HIROSE YASUO
IPC分类号： F23L15/02 , F27D17/00
摘要： PROBLEM TO BE SOLVED: To maintain continued combustion of burners by preventing the occurrence of abnormality in other heat exchangers than those in which abnormality has occurred. SOLUTION: An exhaust path 6 is provided with a stack damper 7 normally closed being allowed to control the opening or closing thereof. It is judged whether abnormality occurs in a heat exchanger of each rotary regenerative burner RRX or not based on measured values of a temperature sensor TIA for measuring the temperatures of exhaust gases discharged from the heat exchangers and a measured value of a current sensor XA for measuring current fed to a motor M used as drive source of a rotation drive mechanism of the heat exchangers. When the occurrence of the abnormality is detected, the stack damper 7 is opened while an induction blower 11 is stopped and an induction blower damper 11a is closed. Thus, the rotary regenerative burners RRX operate as normal burner requiring no preheating of an oxidizing agent with any heat exchanger.

26. 发明专利

JPH07234018A COMBUSTION CONTROLLING METHOD FOR TUBULAR HEATING FURNACE AND THE SAME FURNACE 失效
公开(公告)号：JPH07234018A
公开(公告)日：1995-09-05
申请号：JP31674194
申请日：1994-12-20
申请人： CHIYODA CHEM ENG CONSTRUCT CO
发明人： KAJI HITOSHI , YOSHIOKA TOSHIAKI
IPC分类号： F23L17/04 , C10G9/20 , F23L15/02 , F23L17/00 , F23L17/12 , F24H3/06
摘要： PURPOSE:To raise a thermal efficiency without using a large-sized oxidizer preheater. CONSTITUTION:A tubular heating furnace which has a convection part 102 for preheating fluid to be heated by heat of exhaust gas to be exhausted via a gas exhaust passage 109 on a radiating part 101 is to be controlled. A burning unit 1 having in combination a burner and a heat exchanger is installed on a hearth for forming a part of a furnace wall. The exchanger of the unit 1 has a thermal storage unit 8 heated by the exhaust gas to heat oxidizer, and a duct structure having an oxidizer passage in which the oxidizer flows and an exhaust gas passage in which the exhaust gas out of the storage unit flows. The unit 8, the oxidizer passage and the gas passage are relatively rotated. The exhaust gas flows to both a gas exhaust passage 109 and the exhaust gas passage 23f of the burning unit. A ratio of the quantity of the exhaust gas flowing the passage 109 to that of the exhaust gas flowing all the exhaust gas passages of the burning unit is so decided that a tubular wall temperature of the outlet of a heating tube line 105 disposed in the part 101 becomes lower than a heating tube designing temperature.

27. 发明专利

JPH05296449A 失效
公开(公告)号：JPH05296449A
公开(公告)日：1993-11-09
申请号：JP9535592
申请日：1992-04-15
申请人： CHIYODA CHEM ENG CONSTRUCT CO
发明人： KAJI HITOSHI , YOSHIOKA TOSHIAKI , TAKANO TOSHIO
IPC分类号： F23C99/00 , F23N3/06 , F23N5/00 , F23C11/00
摘要： PURPOSE:To control combustion by regulating an air flow rate of an induction blower provided at an exhaust side. CONSTITUTION:An opening of a burner damper bd of burners B1-B4 respectively provided at a plurality of combustion chambers H1-H4 is fixed until unburned gas in which a CO meter 7 exceeds a reference value is detected, and an opening of an exhaust damper 3c of an induction blower 3 is so regulated in response to an output of an oxygen meter 6 as to approach oxygen concentration in confluent exhaust gas to a suitable value. When the meter 7 detects unburned gas exceeding the reference value, an opening of the damper bd of the burner B1 for heating the chamber H1 is regulated to reduce unburned gas concentration to smaller than the reference value.

28. 发明专利

JPH10205743A COMBUSTION DEVICE 失效
公开(公告)号：JPH10205743A
公开(公告)日：1998-08-04
申请号：JP742397
申请日：1997-01-20
申请人： CHIYODA CHEM ENG CONSTRUCT CO , FURNESS TECHNO KK
发明人： KAJI HITOSHI , HIROSE YASUO
IPC分类号： F23L15/02 , F28D17/04
摘要： PROBLEM TO BE SOLVED: To preheat gas to be burned and restrict also leak of the gas to be burned. SOLUTION: In the combustion device, a burner nozzle 7 of a burner 6 is located at the center of an air-permeable heat storage body 5. Exhaust gas is discharged into an exhaust gas passage 9 from a combustion chamber through the body 5. An oxidizing agent is fed into the combustion chamber from an oxidizing agent passage 13 through the portions of the body 5 heated by the heat of the exhaust gas, while low calorific value gas is fed into the combustion chamber from a passage 14 for gas to be burned. Relative revolutions are generated between the passage 9, passage 13, and passage 14 and a heat exchanger 4 around the burner 6. The passage 14 and passage 13 are formed in such a manner that a flow of gas to be burned which flows from the forward end of the passage 14 toward the body 5 is surrounded by a flow of oxidizing agent flowing from the forward end of the passage 13 toward the body 5.

29. 发明专利

JPH09318040A STACKING TYPE TUBULAR HEATING FURNACE 失效
公开(公告)号：JPH09318040A
公开(公告)日：1997-12-12
申请号：JP13301596
申请日：1996-05-28
申请人： CHIYODA CHEM ENG CONSTRUCT CO
发明人： KAJI HITOSHI , YOSHIOKA TOSHIAKI
IPC分类号： F23D14/66 , F23L15/02
摘要： PROBLEM TO BE SOLVED: To provide a tubular heating furnace of small installation area. SOLUTION: Three tubular heating furnaces 9, 11, 13 are arranged continuous in the vertical direction. Heating tubes 5, 17, 19 are respectively arranged in the tubular heating furnaces 9, 11, 13 so that each main part is extended in the horizontal direction. One or more burner devices 24, 26, 28 are mounted on a side wall of each casing of the tubular heating furnaces 9, 11, 13. An independent exhaust gas flow passage in which the exhaust gas to be discharged respectively from the tubular heating furnaces 9, 11, 13 is discharged without passing through the inside of other tubular heating furnaces is provided.

30. 发明专利

JPH09156901A PROCESS FOR ENDOTHERMIC REACTION AND APPARATUS 失效
公开(公告)号：JPH09156901A
公开(公告)日：1997-06-17
申请号：JP32175995
申请日：1995-12-11
申请人： CHIYODA CHEM ENG CONSTRUCT CO
发明人： KAJI HITOSHI
IPC分类号： F24H7/00 , B01J19/00 , C01B3/36 , C07C11/04 , C07C31/04
摘要： PROBLEM TO BE SOLVED: To provide an apparatus for endothermic reaction not requiring large scale preheator to preheat the raw gas and a large scale cooling apparatus to quench the gas reaction product. SOLUTION: A preheated raw gas, stream and an oxidizing agent is mixed and injected into the reaction vessel 1 equipped with a burner. A part of the raw gas is burned in the reaction vessel 1 and using the heat generated by this combustion, an endothermic reaction is carried out to produce the reaction produce gas. A regenerating burner device 3 is used as a burner. This regenerating burner 3 has a burner 5 having a nozzle 5a at the end of the oxidizing agent supplying tube 5b supplying an oxidizing agent or an oxidizing agent and steam used to burn a part of the raw gas. The raw gas or the raw gas with steam is supplied through at least one gas permeable heat reservoir 4 heated with the heat of reaction product gas. The reaction product gas is discharged through heat reservoir 4. The raw gas or the raw gas with steam supplied through the heat reservoir 4, is preheated by the heat reserved in the heat reservoir 4.

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