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1. 发明专利

JP2002159817A APPARATUS FOR COLLECTING FINE PARTICLES IN DRY DISTILLATED GAS 失效
公开(公告)号：JP2002159817A
公开(公告)日：2002-06-04
申请号：JP2000356271
申请日：2000-11-22
申请人： MITSUBISHI HEAVY IND LTD
发明人： KOJIMA KATSUHISA , MIYAMOTO MANABU
IPC分类号： F23G5/027 , B01D39/00 , B01D39/06 , B01D46/30 , B01D53/14 , F23G5/02 , F23G5/14
摘要： PROBLEM TO BE SOLVED: To provide an apparatus for collecting fine particles in dry distillation gas having a simple and low cost structure and capable of being continuously operated. SOLUTION: The high temperature dry distillation gas discharged from a dry distillation furnace is introduced into a container (200) from a gas supply port (207) to flow upwardly in the container (200) while passing through an air diffusion plate (202) and a sand bed (201) and fine particles in the gas are collected by the sand bed and the cleaned high temperature dry distillation gas flows out toward the upper part of the container to be discharged from a gas discharge port (208). When the pressure loss of the sand bed monitored by a pressure gauge (209) reaches a predetermined upper limit value, a valve (206) is opened to inject ordinary temperature air in the lower part of the container from an air injection nozzle (205) by a forcing fan (203) through an air pipe (204). When air is injected, a part of the high temperature dry distillation gas starts combustion immediately. The fine particles collected by the sand bed provided just above the air injection nozzle are bunt and pressure loss lowers to an initial level.

2. 发明专利

JP2001165418A WASTE BURNING SYSTEM 失效
公开(公告)号：JP2001165418A
公开(公告)日：2001-06-22
申请号：JP35125099
申请日：1999-12-10
申请人： MITSUBISHI HEAVY IND LTD
发明人： BANDAI SHIGEMI , SAITO KEISHIRO , SHIRASAKA MITSURU , MIYAMOTO MANABU
IPC分类号： F23G5/027
摘要： PROBLEM TO BE SOLVED: To improve combustion efficiency by enabling high temperature combustion by preventing the flowing in of a chlorine component into a combustion melting furnace in a waste burning system. SOLUTION: Dry distillation gas 20 generated by distilling waste 10 in a distillation furnace 101 is dropped with temperature at a heat exchanger 105 and demineralized by a first wet type demineralizer 102 after collected and separated with fluid residue 30 by a separator 108. Demineralized dry distillation gas 20a is fed into a combustion melting furnace 103 after pressurized by a blower 106 and heated by a heat exchanger. The illiquid residue 40 remaining inside the dry distillation furnace is demineralized by a second wet type demineralizer 109. The demineralized dry distillation gas sent to the combustion melting furnace is burnt together with the fluid residue and the illiquid residue from the separator and the second demineralizer, and the combustion gas 60 of it is sent to a boiler 104. Water 50 used by the second demineralizer is used by the first demineralizer again and then drained after neutralized by a neutralizing device 110.

3. 发明专利

JP2001165417A WASTE BURNING SYSTEM 失效
公开(公告)号：JP2001165417A
公开(公告)日：2001-06-22
申请号：JP35053099
申请日：1999-12-09
申请人： MITSUBISHI HEAVY IND LTD
发明人： SAITO KEISHIRO , KATAYAMA HIROYUKI , KOJIMA KATSUHISA , BANDAI SHIGEMI , KOIZUMI SHINAI , MIYAMOTO MANABU
IPC分类号： F23G5/027
摘要： PROBLEM TO BE SOLVED: To improve the durability of a waste burning system intensifying the combustion gas generated by combusting specific fuel by combusting the combustible component of the waste. SOLUTION: A dry distillation gas 7 generated from waste fuel 6 by a dry distillation furnace 1 is fed into a gas fired combustor 12 as a filtered dry distillation gas 7a after being filtered with fluid residue 8 by a high temperature filter 2 and then removed with a chlorine component by a demineralizer 3, the fluid residue collected by the high temperature filter also is fed into the gas fired combustor, a high temperature combustion gas 14 is generated by combusting the mixture of the filtered dry distillation gas and the fluid residue with gas fuel 13 and air 10b, the combustion gas generates a high pressure steam 20 fed into a steam turbine 21 and drives a generator 22 heat exchanging with the high pressure steam 20 by an evaporator-superheater 15. Exhaust gas 14a lowered with the temperature is exhaust gas processed by a collection-ash processing apparatus 19. A portion of the filtered dry distillation gas is used as the heat source of the dry distillation furnace.

4. 发明专利

JP2001065832A WASTE PROCESSING SYSTEM AND WASTE PROCESSING METHOD 失效
公开(公告)号：JP2001065832A
公开(公告)日：2001-03-16
申请号：JP24104899
申请日：1999-08-27
申请人： MITSUBISHI HEAVY IND LTD
发明人： KASAI TAKAKUNI , BANDAI SHIGEMI , MIYAMOTO MANABU
IPC分类号： B09B3/00 , C10J3/00 , C10K1/10 , F23G5/00 , F23G5/027 , F23G5/033 , F23G5/44
摘要： PROBLEM TO BE SOLVED: To provide a waste fuel processing system where corrosion of a melting furnace wall and an evaporation tube of a boiler is prevented from happening, and a waste fuel processing system where the through-put of waste fuel is larger. SOLUTION: A waste processing system is adapted to include a supplier 4 for supplying waste fuel, a dry distillation furnace 1 for drying and gasifying waste fuel supplied from the supplier 4, a combustion melting furnace 10 for combusting and melting char left behind in the dry distillation furnace 1, and a desalting apparatus 3 for desalting gas produced by drying. In the system, there is further provided a desalting apparatus 9 between the dry distillation furnace 1 and the combustion and melting furnace 10 for further desalting char. Further, there is provided means upstream the supplier 4 for finely granulated waste fuel.

5. 发明专利

JPH11148619A COMBUSTION MELTING FURNACE 失效
公开(公告)号：JPH11148619A
公开(公告)日：1999-06-02
申请号：JP31978297
申请日：1997-11-20
申请人： MITSUBISHI HEAVY IND LTD
发明人： BANDAI SHIGEMI , KASAI TAKAKUNI , MIYAMOTO MANABU
IPC分类号： F23G5/00 , F23G5/02 , F23G7/06 , F23J1/00
摘要： PROBLEM TO BE SOLVED: To discharge molten slag at low temperature in a combustion melting furnace where char is combusted using refuse dry distillation gas as a fuel, and ash and metal are melted and guided to a slag reservoir. SOLUTION: A feeder 11 for adding borax B is provided on a char supply pipe 10 for feeding airborne char to a char supply hole 2 in a combustion melting furnace. The char is combusted in the combustion melting furnace, and although ash involved in the char is melted and is forced to flow down from a throat 6 to a slag reservoir 9, borax B added to the char lowers a melting point of the produced char with the aid of char combustion.

6. 发明专利

JPH08261441A BOILER FURNACE WALL HAVING ABRASION REDUCING STRUCTURE FOR HEAT TRANSFER TUBE 失效
公开(公告)号：JPH08261441A
公开(公告)日：1996-10-11
申请号：JP6586795
申请日：1995-03-24
申请人： MITSUBISHI HEAVY IND LTD
发明人： MIYAMOTO MANABU , KATAYAMA HIROYUKI , KOBAYASHI YOSHIBUMI
IPC分类号： F23M5/00
摘要： PURPOSE: To provide a boiler furnace wall having the abrasion reducing structure of a heat transfer tube, which reduces the abrasion of the heat transfer tube on the upper surface of refractory at the corner of a combustion chamber. CONSTITUTION: Heat transfer tubes 1 in a combustion chamber are connected by fins 4 and form the heat transfer wall 5 of the combustion chamber. Refractory 2, covering the heat transfer tubes 1, is applied on the lower part of the combustion chamber 3 while the corner part is provided with a corner configuration 6, cut by 135 deg., which has been 90 deg. conventionally. Grains in the combustion chamber 3 drop along the heat transfer tube wall 5 and form a slanted surface while being accumulated on the upper surface 2a of the refractory 2, then, dropping grains are contacted with the heat transfer tubes 1 while moving on the slanted surface and cause local abrasion at the corner part especially, however, the corner part is larger than the conventional 90 deg. and is wide whereby the speed of the grain, moving on the slanted surface, is reduced and local abrasion is also reduced.

7. 发明专利

JPH06109210A FLUIDIZED BED COMBUSTION APPARATUS 失效
公开(公告)号：JPH06109210A
公开(公告)日：1994-04-19
申请号：JP25807192
申请日：1992-09-28
申请人： MITSUBISHI HEAVY IND LTD
发明人： ICHIMURA SHIGEKATSU , MIYAMOTO MANABU
IPC分类号： F22B1/02 , F23C10/00 , F23C11/02
摘要： PURPOSE:To adequately burn unburnt combustibles and relax restrictions such as a particle size distribution, speificial velocity, and the like with respect to a flowing material and fuel. CONSTITUTION:A fluidized bed combustion apparatus comprises a combustion chamber l, in which fuel burns on a fluidized bed, a dust collector 3 for separating from combustion gases a flowing material and unburnt combustibles contained in the combustion gases, and a heat exchanger 5 for absorbing heat of the combustion gases leaving the dust collector 3. Air containing therein oxygen is charged into combustion gases between an outlet of the combustion chamber and an inlet of the heat exchanger through a nozzle 8.

8. 发明专利

JPS63169412A FUEL FEEDING METHOD 失效
公开(公告)号：JPS63169412A
公开(公告)日：1988-07-13
申请号：JP31074286
申请日：1986-12-27
申请人： MITSUBISHI HEAVY IND LTD
发明人： HASEGAWA KOJI , ARAKAWA YOSHIHISA , MIYAMOTO MANABU
IPC分类号： F23C10/18 , F23C10/22
摘要： PURPOSE:To vaporize a moisture content on the surface of solid fuel by means of a sensible heat by particles, by a method wherein high temperature particles collected from combustion exhaust gas exhausted from a fluidized bed combustion furnace are mixed with solid fuel, and thereafter, gas is carried and is fed in a fluidized bed in the combustion furnace. CONSTITUTION:Solid fuel 3 is charged in a fuel hopper 5 through a fuel feed pipe 4, and is introduced through a takeout valve 6 to a fuel-particle mixer 7. To the mixer, particles, collected from combustion exhaust gas exhausted from a combustion furnace 1 and having temperature of about 100-400 deg.C, are introduced through a particle recirculating pipe 8, and are mixed with the solid fuel 3. The mixing causes vaporization of a part or all of a moisture content on the surface of the solid fuel 3 by means of a sensible heat possessed by the solid fuel. This method eliminates drying of the solid fuel as pretreatment. Since a moisture content on the surface of the solid fuel is vaporized in a mixer 7, choking is prevented from occurring in fuel feed systems 11-14.

9. 发明专利

JP2002221302A CIRCULATING FLUIDIZED BED BOILER WITH WEAR PREVENTING MECHANISM FOR EVAPORATING PIPE OF FURNACE 失效
公开(公告)号：JP2002221302A
公开(公告)日：2002-08-09
申请号：JP2001014498
申请日：2001-01-23
申请人： MITSUBISHI HEAVY IND LTD
发明人： ARAKAWA YOSHIHISA , YAMADA KAZUJI , KUROISHI TOSHIRO , NISHIO TOSHIAKI , MIYAMOTO MANABU
IPC分类号： F23C10/02 , F22B1/02 , F22B37/10
摘要： PROBLEM TO BE SOLVED: To provide a circulating fluidized bed boiler with a wear preventing mechanism for an evaporating pipe of a furnace having a simple constitution. SOLUTION: The wear of the evaporating pipes 2 of the furnace with fluidized material particles is suppressed by reducing the amount of the particles which deposit on the upper surface of a refractory material 3 and descend along the internal wall of the furnace by covering the gap between the upper parts of the evaporating pipes 2 from the upper surface of the refractory material 3 covering the internal lower part of the furnace.

10. 发明专利

JP2002005413A CIRCULATED FLUIDIZED BED COMBUSTION FURNACE AND OPERATING METHOD THEREOF 失效
公开(公告)号：JP2002005413A
公开(公告)日：2002-01-09
申请号：JP2000186255
申请日：2000-06-21
申请人： MITSUBISHI HEAVY IND LTD
发明人： TAGASHIRA KENJI , MYOYO KAZUYUKI , TORII ISAO , MIYAMOTO MANABU
IPC分类号： F23G5/30 , F23C10/02 , F23C10/22 , F23G5/44 , F23G5/46 , F27B15/09 , F27D17/00
摘要： PROBLEM TO BE SOLVED: To provide a circulated fluidized bed combustion furnace capable of restricting and preventing the generation of dioxins or the like. SOLUTION: The circulated fluidized bed combustion furnace is constituted of a combustor 11, forming a high speed fluidized bed to burn high volatile fuel 30, a cyclone 12, separating discharged fluidized material or grains 21 from waste gas, a fluidized bed heat exchanger 15, re-circulating the separated grains through a grain circulating line 13 to separate high-temperature grains from low-temperature grains and supply the separated low-temperature grains through a low-temperature grain circulating line 24 for circulating the separated low-temperature grain thereby effecting the heat exchange of latent heat in the separated waste gas, and a dust removing means 27 for removing the dust of soot in the waste gas. In such a circulated fluidized bed combustion furnace, a waste gas circulating line 102 for re-circulating a part of waste gas 22, discharged out of the dust removing means 27, to the upstream side of the heat exchanging means 25 through a waste gas circulating fan 101, is provided.

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