JP2000249317A5 - - Google Patents

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JP2000249317A5
JP2000249317A5 JP1999375232A JP37523299A JP2000249317A5 JP 2000249317 A5 JP2000249317 A5 JP 2000249317A5 JP 1999375232 A JP1999375232 A JP 1999375232A JP 37523299 A JP37523299 A JP 37523299A JP 2000249317 A5 JP2000249317 A5 JP 2000249317A5
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solid waste
high temperature
dehydrated
gasification
gasified
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JP1999375232A
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JP2000249317A (en
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【0005】
【課題を解決するための手段】
上述した課題を解決するために、本発明の1態様は、固形廃棄物をガス化した後に高温燃焼により廃棄物中の灰分を溶融スラグ化する方法において、固形廃棄物をガス化工程に供給する前に脱水し、脱水された固形廃棄物をガス化及び高温燃焼して灰分を溶融したのちの高温の燃焼排ガス中に前記脱水した水分を噴霧すことを特徴とするものである。また、前記脱水した水分を間接加熱することにより発生する蒸気を供給して分解処理してもよい
0005
[Means for solving problems]
In order to solve the above-mentioned problems, one aspect of the present invention is to supply the solid waste to the gasification step in a method of gasifying the solid waste and then melting and slagging the ash in the waste by high temperature combustion. dehydrated before the dewatered solid waste is characterized in the that the dehydrated moisture you mists in the combustion exhaust gas of high temperature After melting gasification and high-temperature combustion to ash. Alternatively, steam generated by indirectly heating the dehydrated water may be supplied for decomposition treatment.

また、固形廃棄物をガス化した後にさらに高温でガス化する方法において、該固形廃棄物をガス化工程に供給する前に脱水し、脱水された該固形廃棄物をガス化及び高温でガス化してもよい Further, a method of further gas at a high temperature after the gasification of solid wastes, the said solid waste dehydrated before being fed to the gasification process, the gasification of the dehydrated solid form waste in the gasification and high-temperature You may .

本発明の1態様は、固形廃棄物をガス化した後に高温で廃棄物中の灰分を溶融スラグ化する方法において、該固形廃棄物をガス化工程に供給する前に脱水し、脱水された該固形廃棄物をガス化及び高温で灰分を溶融したのちの高温のガス中に前記脱水した水分を供給することを特徴とするものである。 One aspect of the present invention is a method of gasifying solid waste and then melting and slagging the ash in the waste at a high temperature, wherein the solid waste is dehydrated and dehydrated before being supplied to the gasification step. the solid waste is characterized in Rukoto teapot subjecting the dehydrated water into the hot gas after the molten ash in the gasification and high-temperature.

本発明の1態様は、固形廃棄物をガス化した後に高温で熱分解する方法において、該固形廃棄物をガス化工程に供給する前に脱水し、脱水された該固形廃棄物をガス化及び高温で熱分解したのちの高温のガス中に前記脱水した水分を供給することを特徴とするものである。 One aspect of the present invention is a method of gasifying solid waste and then thermally decomposing it at a high temperature, in which the solid waste is dehydrated before being supplied to the gasification step, and the dehydrated solid waste is gasified and and it is characterized in Rukoto teapot subjecting the dehydrated water into the hot gas After pyrolysis at high temperatures.

本発明の1態様は、固形廃棄物をガス化した後に高温で熱分解する方法において、該固形廃棄物をガス化工程に供給する前に脱水し、脱水された該固形廃棄物はガス化および高温で熱分解し、前記脱水により得られる水分は間接加熱により水分を蒸発させ、前記脱水により得られる水分及び/又は該間接加熱により発生する蒸気は高温で熱分解後の高温ガス中に供給することを特徴とするものである。 One aspect of the present invention is a method of gasifying solid waste and then pyrolyzing it at a high temperature, in which the solid waste is dehydrated before being supplied to the gasification step, and the dehydrated solid waste is gasified and pyrolyzed at a high temperature, the water obtained by dewatering the water is evaporated by indirect heating, provided the the vapor hot gas after the pyrolysis at a high temperature generated by the moisture and / or the indirect heating is obtained by dehydration supply the to Rukoto those characterized.

本発明の1態様は、固形廃棄物をガス化した後に高温燃焼により廃棄物中の灰分を溶融スラグ化する方法において、該固形廃棄物をガス化工程に供給する前に脱水し、脱水された該固形廃棄物はガス化および高温燃焼して灰分を溶融し、前記脱水により得られる水分は間接加熱により水分を蒸発させ、前記脱水により得られる水分及び/又は該間接加熱により発生する蒸気は高温燃焼後の高温排ガス中に供給することを特徴とするものである。
また、前記脱水は先端に行くに従って直径が小さくなるテーパ形状のスクリュウコンベヤを使用する圧搾工程により行うことを特徴とする。
また、前記ガス化工程は流動層ガス化炉により行うことを特徴とする。
また、前記脱水を行う工程においては、前記高温燃焼の温度を検知して、燃焼温度がほぼ一定になるように脱水率を制御することを特徴とする。
また、前記間接加熱は、ガス化した後に高温で熱分解した後のガスの熱あるいはガス化した後に高温で熱分解する際に排出される固形物の保有熱により加熱することを特徴とする。
また、前記間接加熱は、ボイラで発生した蒸気を用いて加熱し、間接加熱により水分を蒸発し、濃縮あるいは乾燥した残留脱水液中の固形分は前記固形廃棄物あるいは前記ガス化工程に戻されることを特徴とする。
また、前記固形廃棄物の脱水を行う装置は、当該固形廃棄物のガス化工程への供給装置の一部であってもよい。
また、前記高温燃焼により灰分を溶融するまでの段階の空気比を1近傍とし、前記脱水した水分を噴霧する工程で完全燃焼に必要な総燃焼空気比1.3〜1.6となるように空気比0.3〜0.6の空気量を同時に供給してもよい。
また、前記脱水装置は、ガス化炉に直結し、脱水し円筒状になった廃棄物を先端部で解砕してそのままガス化工程に供給してもよい。
One aspect of the present invention is a method of gasifying solid waste and then melting and slagging the ash in the waste by high-temperature combustion, in which the solid waste is dehydrated and dehydrated before being supplied to the gasification step. The solid waste is gasified and burned at a high temperature to melt the ash, the water obtained by the dehydration evaporates the water by indirect heating, and the water obtained by the dehydration and / or the steam generated by the indirect heating is at a high temperature. and it is characterized in Rukoto teapot subjected to high temperatures in the exhaust gas after combustion.
Further, the dehydration is performed by a squeezing step using a tapered screw conveyor whose diameter decreases toward the tip.
Further, the gasification step is performed by a fluidized bed gasification furnace.
Further, the step of performing the dehydration is characterized in that the temperature of the high-temperature combustion is detected and the dehydration rate is controlled so that the combustion temperature becomes substantially constant.
Further, the indirect heating is characterized in that it is heated by the heat of the gas after being pyrolyzed at a high temperature after gasification or by the retained heat of the solid matter discharged when the gasification is pyrolyzed at a high temperature.
Further, in the indirect heating, the steam generated in the boiler is used to heat, the water is evaporated by the indirect heating, and the solid content in the concentrated or dried residual dehydration liquid is returned to the solid waste or the gasification step. It is characterized by that.
Further, the device for dehydrating the solid waste may be a part of a device for supplying the solid waste to the gasification step.
Further, the air ratio at the stage until the ash is melted by the high temperature combustion is set to around 1, and the total combustion air ratio required for complete combustion in the step of spraying the dehydrated water is 1.3 to 1.6. An amount of air having an air ratio of 0.3 to 0.6 may be supplied at the same time.
Further, the dehydrator may be directly connected to the gasification furnace, and the dehydrated and cylindrical waste may be crushed at the tip and supplied to the gasification step as it is.

Claims (11)

固形廃棄物をガス化した後に高温燃焼により廃棄物中の灰分を溶融スラグ化する方法において、固形廃棄物をガス化工程に供給する前に脱水し、脱水された固形廃棄物をガス化及び高温燃焼して灰分を溶融したのちの高温の燃焼排ガス中に前記脱水した水分を噴霧することを特徴とする固形廃棄物の溶融処理方法。In a method in which solid waste is gasified and then melted into slag by high-temperature combustion by high-temperature combustion, the solid waste is dehydrated before being supplied to the gasification step, and the dehydrated solid waste is gasified and heated to high temperature. melt processing method for solid waste to the dehydrated moisture characterized mists to Rukoto the combustion exhaust gas of high temperature after combustion to melt the ash. 固形廃棄物をガス化した後に高温燃焼により廃棄物中の灰分を溶融スラグ化する方法において、固形廃棄物をガス化工程に供給する前に脱水し、脱水された固形廃棄物をガス化及び高温燃焼して灰分を溶融することを特徴とする固形廃棄物の溶融処理方法。  In a method in which solid waste is gasified and then melted into slag by high temperature combustion, the solid waste is dehydrated before being supplied to the gasification step, and the dehydrated solid waste is gasified and heated to high temperature. A solid waste melting method characterized by burning and melting ash. 固形廃棄物をガス化した後に高温で廃棄物中の灰分を溶融スラグ化する方法において、該固形廃棄物をガス化工程に供給する前に脱水し、脱水された該固形廃棄物をガス化及び高温で灰分を溶融したのちの高温のガス中に前記脱水した水分を供給することを特徴とする固形廃棄物の溶融処理方法。In a method for melting slag of ash in waste at a high temperature after gasifying the solid waste, the solid waste is dehydrated before being supplied to the gasification step, and the dehydrated solid waste is gasified and melt processing method for solid waste, characterized in Rukoto teapot subjecting the dehydrated water into the hot gas after the molten ash at high temperature. 固形廃棄物をガス化した後に高温で熱分解する方法において、該固形廃棄物をガス化工程に供給する前に脱水し、脱水された該固形廃棄物をガス化及び高温で熱分解したのちの高温のガス中に前記脱水した水分を供給することを特徴とする固形廃棄物の溶融処理方法。In the method of pyrolyzing solid waste at high temperature after gasification, the solid waste is dehydrated before being supplied to the gasification step, and the dehydrated solid waste is gasified and pyrolyzed at high temperature. melt processing method for solid waste, characterized in Rukoto teapot subjecting the dehydrated water into the hot gases. 固形廃棄物をガス化した後に高温で熱分解する方法において、該固形廃棄物をガス化工程に供給する前に脱水し、脱水された該固形廃棄物はガス化および高温で熱分解し、前記脱水により得られる水分は間接加熱により水分を蒸発させ、前記脱水により得られる水分及び/又は該間接加熱により発生する蒸気は高温で熱分解後の高温ガス中に供給することを特徴とする固形廃棄物の溶融処理方法。In the method of pyrolyzing solid waste at a high temperature after gasification, the solid waste is dehydrated before being supplied to the gasification step, and the dehydrated solid waste is gasified and pyrolyzed at a high temperature, water obtained by dewatering the water is evaporated by indirect heating, steam the produced by water and / or the indirect heating is obtained by dehydration is characterized Rukoto teapot subjected to a high temperature gas after the pyrolysis at a high temperature A method for melting solid waste. 固形廃棄物をガス化した後に高温燃焼により廃棄物中の灰分を溶融スラグ化する方法において、該固形廃棄物をガス化工程に供給する前に脱水し、脱水された該固形廃棄物はガス化および高温燃焼して灰分を溶融し、前記脱水により得られる水分は間接加熱により水分を蒸発させ、前記脱水により得られる水分及び/又は該間接加熱により発生する蒸気は高温燃焼後の高温排ガス中に供給することを特徴とする固形廃棄物の溶融処理方法。In a method in which solid waste is gasified and then the ash content in the waste is melted into slag by high-temperature combustion, the solid waste is dehydrated before being supplied to the gasification step, and the dehydrated solid waste is gasified. The ash is melted by high temperature combustion, the water obtained by the dehydration evaporates the water by indirect heating, and the water obtained by the dehydration and / or the steam generated by the indirect heating is contained in the high temperature exhaust gas after the high temperature combustion. subjected teapot melt processing method for solid waste, characterized in Rukoto. 前記脱水は先端に行くに従って直径が小さくなるテーパ形状のスクリュウコンベヤを使用する圧搾工程により行うことを特徴とする請求項1乃至のいずれか1項に記載の固形廃棄物の溶融処理方法。The solid waste melting method according to any one of claims 1 to 6 , wherein the dehydration is performed by a pressing process using a tapered screw conveyor having a diameter that decreases toward the tip. 前記ガス化工程は流動層ガス化炉により行うことを特徴とする請求項1乃至のいずれか1項に記載の固形廃棄物の溶融処理方法。The solid waste melting method according to any one of claims 1 to 7 , wherein the gasification step is performed by a fluidized bed gasification furnace. 前記脱水を行う工程においては、前記高温燃焼の温度を検知して、燃焼温度がほぼ一定になるように脱水率を制御することを特徴とする請求項1乃至のいずれか1項に記載の固形廃棄物の溶融処理方法。Wherein in the step of performing dehydration, by detecting the temperature of the hot combustion, according to any one of claims 1 to 6, characterized in that to control the dewatering rate as the combustion temperature is substantially constant A method for melting solid waste. 前記間接加熱は、ガス化した後に高温で熱分解した後のガスの熱あるいはガス化した後に高温で熱分解する際に排出される固形物の保有熱により加熱することを特徴とする請求項又はに記載の固形廃棄物の溶融処理方法。The indirect heating, according to claim 5, characterized in that the heating by the potential heat of the solids to be discharged during the pyrolysis at a high temperature after heat or gasification gas after pyrolysis at a high temperature after the gasification or melt processing method for solid waste according to 6. 前記間接加熱は、ボイラで発生した蒸気を用いて加熱し、間接加熱により水分を蒸発し、濃縮あるいは乾燥した残留脱水液中の固形分は前記固形廃棄物あるいは前記ガス化工程に戻されることを特徴とする請求項又は又は10に記載の固形廃棄物の溶融処理方法。The indirect heating is performed by using steam generated in a boiler, the moisture is evaporated by indirect heating, and the solid content in the residual dehydrated liquid concentrated or dried is returned to the solid waste or the gasification step. The solid waste melting method according to claim 5, 6, or 10 .
JP11375232A 1998-12-28 1999-12-28 Method for melting solid refuse Pending JP2000249317A (en)

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JP10-374621 1998-12-28
JP37462198 1998-12-28
JP11375232A JP2000249317A (en) 1998-12-28 1999-12-28 Method for melting solid refuse

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JP2000249317A5 true JP2000249317A5 (en) 2005-06-30

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1631374A2 (en) * 2003-04-30 2006-03-08 Ebara Corporation A supplying apparatus for supplying combustible material, a gasification apparatus for gasifying combustible material and method for gasifying combustible material
JP4502331B2 (en) * 2005-11-02 2010-07-14 三菱重工環境・化学エンジニアリング株式会社 Method and system for cogeneration with a carbonization furnace
DE102008012154A1 (en) * 2008-03-01 2009-09-03 Karl-Heinz Tetzlaff Biomass conveyor for feeding into a pressure vessel
JP5528685B2 (en) * 2008-07-08 2014-06-25 Jx日鉱日石金属株式会社 Gas processing apparatus, kiln processing apparatus, and kiln processing method
CN107384484A (en) * 2017-09-12 2017-11-24 合肥德博生物能源科技有限公司 A kind of refuse gasification coupling coal fired power plant TRT and electrification technique
CN108176703B (en) * 2018-02-11 2023-10-27 武汉凯迪工程技术研究总院有限公司 Harmless treatment method and system for multi-element waste
CN113587110B (en) * 2021-06-25 2024-04-05 武汉武锅能源工程有限公司 Msw incineration flying ash melting treatment system

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