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1. 发明专利

JPH07265833A ASH HEATING AND DECOMPOSING DEVICE 失效
公开(公告)号：JPH07265833A
公开(公告)日：1995-10-17
申请号：JP6225294
申请日：1994-03-31
申请人： HITACHI SHIPBUILDING ENG CO
发明人： SHIJI RYOZO , SHIYOU HOU
IPC分类号： A62D3/00 , A62D3/40 , A62D101/08 , A62D101/22 , A62D101/28 , B01D53/34 , B01D53/70 , B09B3/00
摘要： PURPOSE:To prevent exhaust of harmful substances such as dioxins into the air and also to provide an ash heating and decomposing device easy for maintenance. CONSTITUTION:This device is provided with a gas cooler 31 for condensing gas containing the harmful substances evaporated from the ash heating device 5 and exhausting the harmful substances to the outside of the system, and an active carbon filter 36 for adsorbing and filtering the gas unable to condense by the gas cooler 31 and eliminating the harmful substances, and the gas passed through the activated carbon filter 36 is returned to the ash heating device 5 in circulation. Thus, sticking trouble caused by moisture in the circulating gas in a conventional precipitation treatment can be evaded and also the maintenance becomes easy by using the active carbon filter.

2. 发明专利

JPH07323213A METHOD FOR MAKING HARMLESS HARMFUL MATERIAL IN WASTE INCINERATOR AND DEVICE THEREFOR 失效
公开(公告)号：JPH07323213A
公开(公告)日：1995-12-12
申请号：JP11772994
申请日：1994-05-31
申请人： HITACHI SHIPBUILDING ENG CO
发明人： ISHIDA MICHIO , SHIJI RYOZO , SHIYOU HOU , NAKAMURA NORIYUKI
IPC分类号： B01D53/68 , B01D53/70 , B09B3/00 , C02F1/02
摘要： PURPOSE:To obviate the installation of a special device for removing harmful components contained in water by feeding the water produced by thermal decomposition into a combustion chamber of a waste incineration furnace. CONSTITUTION:After waste gas leaving a waste incineration furnace 2 is cooled by a temp. adjusting tower 4, a reaction agent is added to it, and the formed reaction product is collected together with flying ash by a bag filter 6. The reaction product is transferred together with the flying ash to a thermal decomposition device 12, where a harmful material, dioxins, is thermally decomposed. The produced water is stored in a storage tank 14 as drainage. The drainage contg. the dioxins is fed to a sewage tank 9 through drainage feeding piping 16. The drainage is sprayed together with the sewage to a high temp. zone in a combustion chamber of the waste incineration furnace 2 through sewage feeding piping 11. That is, the dioxins are thermally decomposed and made harmless in the waste incineration furnace 2. Therefore, harmful materials are made harmless without installing a special device.

3. 发明专利

JPH0724599A KNEADED EXTRUSION DEVICE FOR ASH SOLIDIFICATION TREATMENT 失效
公开(公告)号：JPH0724599A
公开(公告)日：1995-01-27
申请号：JP16827293
申请日：1993-07-08
申请人： HITACHI SHIPBUILDING ENG CO
发明人： ISHIDA MICHIO , MAEDA NOBUHIRO , SHIYOU HOU
IPC分类号： B30B3/00 , B30B9/28 , B30B11/24
摘要： PURPOSE:To prevent the formation of a solidified film caused by stickness of kneaded material to the inner surface of a die surface plate. CONSTITUTION:In a kneaded extrusion device for ash solidification treatment arranging a paddle 6 for kneading and a screw 8 for extruding to a rotary shaft arranged from the one end side to the other end in a casing 3 forming a raw material charging hole 4 at the one end side and also an extruding hole 9 at the other end side, a first scraper 11 approaching or slidingly contacting the tip part to the inner surface of the die surface plate 1 0 forming the extruding hole 9 is arranged at the end part in the outlet side of a screw blade 8a in a screw 8 for extrusion. Therefore, the stuck material is scraped with the first scraper.

4. 发明专利

JPH07328584A THERMAL DECOMPOSITION OF FLY ASH IN HEATING STIRRER 失效
公开(公告)号：JPH07328584A
公开(公告)日：1995-12-19
申请号：JP12719294
申请日：1994-06-09
申请人： HITACHI SHIPBUILDING ENG CO
发明人： SHIYOU HOU , ISHIDA MICHIO , SHIJI RYOZO
IPC分类号： A62D3/40 , A62D101/08 , A62D101/22 , A62D101/28 , B09B3/00 , A62D3/00
摘要： PURPOSE:To enable the long-term use of stirring blades by preventing the abrasion of the stirring blades caused by the rotation of the stirring blades in a kneaded fly ash bed because fly ash kneaded with a solidification inhibitor is not solidified even when a heating stirrer is raised to predetermined temp. and the contact of the kneaded fly ash bed with the stirring blades. CONSTITUTION:Before fly ash 1 is taken in a heating stirrer 3, a predetermined amt. of a solidification inhibitor for preventing the solidification of fly ash 1 accompanied by the temp. rise of the fly ash 1 is kneaded with the fly ash 1 and the kneaded fly ash 22 is preliminarily charged in the heating stirrer 3 to be heated under stirring to form a kneaded fly ash bed 23 on the inner surface of the heating stirrer 3. Thereafter, a motor is driven while the heating stirrer 3 is heated to rotate stirring blades 6 and the fly ash 1 taken in the heating stirrer 3 from a fly ash taking-in port 10 is heated under stirring to decompose dioxine contained in the fly ash 1.

5. 发明专利

JPH07265832A THERMAL DECOMPOSITION DEVICE FOR FLY ASH CONTAINING DIOXINES 失效
公开(公告)号：JPH07265832A
公开(公告)日：1995-10-17
申请号：JP6225094
申请日：1994-03-31
申请人： HITACHI SHIPBUILDING ENG CO
发明人： ISHIDA MICHIO , SHIJI RYOZO , SHIYOU HOU
IPC分类号： A62D3/00 , A62D3/40 , A62D101/08 , A62D101/22 , A62D101/28 , B01D53/70 , B09B3/00
摘要： PURPOSE:To prevent in advance the situation such as a shutdown of operations by heating supply feeder parts such as an ash hopper and a feed rotary valve and preventing sticking of fly ash. CONSTITUTION:A suction and circulation device by which vent gas is sucked from a takeout port of a treating device 4 and also the sucked vent gas is circulated to a feeding port of the heating device 4, is provided, and a heavy metal precipitation tank 15 for eliminating harmful substances in the vent gas by a precipitation treatment is provided in the middle of a suction pipe 10 in the suction and circulation means, and a heating means for heating the fly ash supply means such as the ash hopper and the feed rotary valve is provided.

6. 发明专利

JPH0788459A KNEADING EXTRUDER FOR ASH SOLIDIFYING TREATMENT 失效
公开(公告)号：JPH0788459A
公开(公告)日：1995-04-04
申请号：JP5960994
申请日：1994-03-30
申请人： HITACHI SHIPBUILDING ENG CO
发明人： SHIYOU HOU , ISHIDA MICHIO , MAEDA NOBUHIRO
IPC分类号： F23J1/00 , B01F7/08 , B09B3/00
摘要： PURPOSE:To perform excellent kneading and stirring by enhancing kneading and stirring effect by arranging two or more sets of petal-shaped paddle plates to rotary shafts in a phase shifted state to constitute kneading paddles and providing a drive device rotating both rotary shafts in opposed directions. CONSTITUTION:For example, incineration ash and cement are charged in a predetermined ratio from a raw material charging port 4 to be sent toward kneading paddles 12 by the pushing-in screw rotated by a drive motor. Moistening water and a chemical soln. are supplied from a moistening water supply port 7 and the raw material consisting of incineration ash and cement is kneaded by the kneading paddles 12. At this time, by the rotation of paddle plates 11 displaced by 90 deg., the raw material is revolved to be moved to the outside from the upper inside as shown by an arrow (a) and also revolved to be moved to the inside from the lower outside and mixed at the mixing part (b) shown by a broken line of a meshing part to be effectively stirred and mixed.

7. 发明专利

JPH0731956A TREATMENT OF COMBUSTION ASH 失效
公开(公告)号：JPH0731956A
公开(公告)日：1995-02-03
申请号：JP17948293
申请日：1993-07-21
申请人： HITACHI SHIPBUILDING ENG CO
发明人： ISHIDA MICHIO , MAEDA NOBUHIRO , SHIYOU HOU
IPC分类号： B09B3/00 , B65F5/00
摘要： PURPOSE:To save a space for installing a treating facility by kneading combustion ash and cement with a prescribed kneading agent and kneading water in a kneader mounted on a carrying vehicle during transportation, and dumping the kneaded material caused by kneading to a dumping place. CONSTITUTION:In a treatment facility 1, combustion ash 2 stored in a combustion ash storage tank 3 is transferred into a kneader by a prescribed quantity as it is measured by a measuring instrument 10a, and cement 4 stored in a cement 4 storage tank 5 is also transferred to the kneader as it is measured by a measuring instrument 10b. The heating water 6 for setting cement is measured by a measuring instrument 10c and transferred into the kneader by a prescribed quantity, and further, a prescribed kneading agent for making the combustion ash 14 harmless is properly put in. While they are kneaded, they are carried to reclaiming land by a carrying vehicle on which the kneader is mounted, and the kneaded material consisting of the combustion ash 2, the cement 4 and the heating water 6 is discharged from a discharge port of the kneader onto a curing conveyor separately carried and installed, and aged on the conveyor and dumped to the reclaimed land.

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