JP2586251B2 - Thermal decomposition method of harmful substances in fly ash discharged from refuse incinerator - Google Patents
Thermal decomposition method of harmful substances in fly ash discharged from refuse incineratorInfo
- Publication number
- JP2586251B2 JP2586251B2 JP21372491A JP21372491A JP2586251B2 JP 2586251 B2 JP2586251 B2 JP 2586251B2 JP 21372491 A JP21372491 A JP 21372491A JP 21372491 A JP21372491 A JP 21372491A JP 2586251 B2 JP2586251 B2 JP 2586251B2
- Authority
- JP
- Japan
- Prior art keywords
- fly ash
- harmful substances
- thermal decomposition
- refuse incinerator
- ash
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/20—Waste processing or separation
Landscapes
- Fire-Extinguishing Compositions (AREA)
- Processing Of Solid Wastes (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明はごみ焼却炉から排出され
る飛灰中の有害物質の熱分解方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for thermally decomposing harmful substances in fly ash discharged from a refuse incinerator.
【０００２】[0002]
【従来の技術】ごみ焼却炉から排出される灰中のダイオ
キシン等の有害物質の処理は、社会問題としてクローズ
アップされてきているが、固化して、埋め立てる等の方
法は、ダイオキシンが自然に分解する物質でないことを
考えると、抜本的な解決方法ではない。そこで、灰中の
ダイオキシン等の有害物質を分解し、無害化することが
必要になる。2. Description of the Related Art The treatment of harmful substances such as dioxin in ash discharged from refuse incinerators has become a social issue, but the method of solidifying and landfilling involves the natural decomposition of dioxin. This is not a radical solution, given that it is not a substance. Therefore, it is necessary to decompose harmful substances such as dioxin in the ash to make them harmless.
【０００３】従来、灰中のダイオキシンを分解する方法
として、例えば、特開平２−７８４７９号が提案されて
いる。これは、コンベヤにヒータを巻き、灰を加熱する
ことで、脱塩素化を行うものである。Conventionally, as a method for decomposing dioxin in ash, for example, Japanese Patent Application Laid-Open No. 2-78479 has been proposed. In this method, a heater is wound around a conveyor and ash is heated to perform dechlorination.
【０００４】[0004]
【発明が解決しようとする課題】ところで、ダイオキシ
ンの分解は、Ｏ2 存在下では、７００〜８００℃、Ｏ2
が存在しない雰囲気では５５０℃ぐらいの温度が必要で
ある。この熱源として、上記のようにヒータを用いる場
合には、電気代などのコストがかかる。本発明は、上記
のダイオキシンの分解を、熱源としてのコストをかけな
いで行うことを課題とするものである。The object of the invention is to be Solved by the way, decomposition of dioxin, in the O 2 presence, 700~800 ℃, O 2
A temperature of about 550 ° C. is required in an atmosphere in which no is present. When a heater is used as the heat source as described above, costs such as electricity costs are required. An object of the present invention is to perform the above-described decomposition of dioxin without adding a cost as a heat source.
【０００５】[0005]
【課題を解決するための手段】本発明のごみ焼却炉から
排出される飛灰中の有害物質の熱分解方法は、ごみ焼却
炉から排出される飛灰、セメント及び水の量を各々計量
機で軽量し、各々所定の割合で混練造粒機に送り、セメ
ント固化された固化物を上記焼却炉に投入して飛灰中の
有害物質を熱分解することを特徴とするものである。According to the present invention, there is provided a method for thermally decomposing harmful substances in fly ash discharged from a refuse incinerator. In this method, the cement is solidified and fed into the incinerator to thermally decompose harmful substances in fly ash.
【０００６】[0006]
【作用】飛灰をセメント固化し、この固化物を炉内に入
れることで、ごみ燃焼による熱によって、脱塩素化を行
いダイオキシンを分解することができ、熱源としてのコ
ストが不要となる。By solidifying the fly ash with cement and placing the solidified material in a furnace, dioxin can be decomposed and decomposed by heat generated from refuse combustion, thereby eliminating the need for a heat source.
【０００７】また、灰をコンクリート固化しているの
で、灰の飛散防止ができる。また、ダイオキシンが分解
するのに必要な時間、ダイオキシンを含む灰を高温部に
おくこともできる。Further, since the ash is solidified in concrete, it is possible to prevent the ash from scattering. Also, the ash containing dioxin can be placed in the high temperature section for the time required for the decomposition of dioxin.
【０００８】[0008]
【実施例】本発明方法を実施するための設備構成の一例
を図１に示す。FIG. 1 shows an example of an equipment configuration for carrying out the method of the present invention.
【０００９】ごみ焼却炉１からの排ガスは、例えば廃熱
回収ボイラ２で熱回収されてから、集塵機３に達し、こ
こで飛灰が回収、除去され、清浄になった排ガスは、誘
引送風機４により吸引されて、煙突５から大気中に排出
される。Exhaust gas from the refuse incinerator 1 is, for example, heat recovered by a waste heat recovery boiler 2 and then reaches a dust collector 3 where fly ash is collected and removed, and purified exhaust gas is collected by an induction blower 4. And is discharged from the chimney 5 into the atmosphere.
【００１０】そして、集塵機３で回収された飛灰は、灰
サイロ６に導かれ、コンベヤ７により、混練造粒機９に
送られる。一方、セメントがセメントサイロ１０からコ
ンベヤ１２により混練造粒機９に送られる。そして、混
練造粒機９に送られる飛灰及びセメントの量は、それぞ
れ計量機８及び１２により計量される。一方、混練造粒
機９に送られる水の量は、計量機１３ににより計量され
る。The fly ash collected by the dust collector 3 is guided to an ash silo 6 and sent to a kneading granulator 9 by a conveyor 7. On the other hand, the cement is sent from the cement silo 10 to the kneading granulator 9 by the conveyor 12. Then, the amounts of fly ash and cement sent to the kneading and granulating machine 9 are measured by measuring machines 8 and 12, respectively. On the other hand, the amount of water sent to the kneading and granulating machine 9 is measured by the measuring machine 13.
【００１１】こうして、飛灰、セメント及び水を所定の
割合で、混練造粒機９に送り、飛灰をセメント固化す
る。セメント固化された飛灰は、コンベヤライン１５を
介して、ごみ焼却炉１に入れられる。In this way, the fly ash, cement and water are sent at a predetermined ratio to the kneading and granulating machine 9 to solidify the fly ash with cement. The fly ash solidified with the cement is put into the refuse incinerator 1 via the conveyor line 15.
【００１２】[0012]
【発明の効果】本発明のごみ焼却炉から排出される飛灰
中の有害物質の熱分解方法は上記のようなもので、飛灰
をセメント固化し、この固化物を炉内に入れることで、
ごみ燃焼による熱によって、脱塩素化を行いダイオキシ
ンを分解することができ、熱源としてのコストが不要と
なる。The method for thermally decomposing harmful substances in fly ash discharged from a refuse incinerator according to the present invention is as described above. The fly ash is solidified with cement and the solidified product is put into the furnace. ,
The dioxin can be decomposed and decomposed by the heat from the refuse combustion, and the cost as a heat source becomes unnecessary.
【００１３】また、飛灰、セメント及び水を所定の割合
で混練造粒固化するので、飛灰の飛散防止ができる。ま
た、ダイオキシンが分解するのに必要な時間、ダイオキ
シンを含む灰を高温部におくことができ、より効果的に
飛灰中の有害物質を熱分解できる。Further, since fly ash, cement and water are kneaded, granulated and solidified at a predetermined ratio, scattering of fly ash can be prevented. In addition, the ash containing dioxin can be kept in the high-temperature part for the time required for the decomposition of dioxin, and the harmful substances in fly ash can be thermally decomposed more effectively.
【図１】本発明方法を実施するための設備構成の一例を
示す説明図。FIG. 1 is an explanatory diagram showing an example of a facility configuration for implementing a method of the present invention.
フロントページの続き (72)発明者 仲尾 強 東京都千代田区丸の内一丁目１番２号 日本鋼管株式会社内 (72)発明者 伊藤 健太郎 東京都千代田区丸の内一丁目１番２号 日本鋼管株式会社内 (56)参考文献 特開 昭57−1480（ＪＰ，Ａ) 特開 昭54−149273（ＪＰ，Ａ)Continued on the front page (72) Inventor Tsuyoshi Nakao 1-1-2 Marunouchi, Chiyoda-ku, Tokyo Nippon Kokan Co., Ltd. (72) Inventor Kentaro Ito 1-1-2 Marunouchi, Chiyoda-ku, Tokyo Nippon Kokan Co., Ltd. (56) References JP-A-57-1480 (JP, A) JP-A-54-149273 (JP, A)
Claims (1)
ト及び水の量を各々計量機で軽量し、各々所定の割合で
混練造粒機に送り、セメント固化された固化物を上記焼
却炉に投入して飛灰中の有害物質を熱分解することを特
徴とするごみ焼却炉から排出される飛灰中の有害物質の
熱分解方法1. The amount of fly ash, cement and water discharged from a refuse incinerator is lightened by a measuring machine, respectively, sent to a kneading and granulating machine at a predetermined ratio, and the solidified cement is discharged from the incinerator. For thermal decomposition of harmful substances in fly ash discharged from refuse incinerators, characterized in that harmful substances in fly ash are thermally decomposed by throwing into ash
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21372491A JP2586251B2 (en) | 1991-08-26 | 1991-08-26 | Thermal decomposition method of harmful substances in fly ash discharged from refuse incinerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21372491A JP2586251B2 (en) | 1991-08-26 | 1991-08-26 | Thermal decomposition method of harmful substances in fly ash discharged from refuse incinerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0550054A JPH0550054A (en) | 1993-03-02 |
| JP2586251B2 true JP2586251B2 (en) | 1997-02-26 |
Family
ID=16643947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21372491A Expired - Fee Related JP2586251B2 (en) | 1991-08-26 | 1991-08-26 | Thermal decomposition method of harmful substances in fly ash discharged from refuse incinerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2586251B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3780402B2 (en) * | 2000-03-23 | 2006-05-31 | 日立造船株式会社 | Detoxification method for incineration fly ash |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS607554B2 (en) * | 1978-05-15 | 1985-02-25 | 荏原インフイルコ株式会社 | Method for solidifying fine powder incineration residue |
| JPS571480A (en) * | 1980-06-05 | 1982-01-06 | Hitachi Plant Eng & Constr Co Ltd | Method and apparatus for disposal of dust discharged from melting furnace |
| JPS6256705A (en) * | 1985-09-03 | 1987-03-12 | Ebara Corp | Ash caking equipment |
| JPH02218485A (en) * | 1989-02-17 | 1990-08-31 | Chugai Ro Co Ltd | Treatment of urban garbage incineration ash |
-
1991
- 1991-08-26 JP JP21372491A patent/JP2586251B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0550054A (en) | 1993-03-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES8705614A1 (en) | Apparatus and method for disposal of waste material. | |
| JP2586251B2 (en) | Thermal decomposition method of harmful substances in fly ash discharged from refuse incinerator | |
| JP2010127597A (en) | Treated object combustion treatment system and method of removing mercury in exhaust gas | |
| JPH1177017A (en) | Prevention of moisture absorption of fused or burnt fly ash | |
| JP3077800B1 (en) | Method and apparatus for decomposing dioxins in fly ash using fluidized bed under reducing atmosphere | |
| JPH06254528A (en) | Method and device for treating dust | |
| NO952065L (en) | Method and apparatus for removing asbestos and / or asbestos-containing materials and from residues from waste incinerators as well as active coke and / or activated charcoal as well as low temperature coke and / or pyrolysis dust | |
| JPH07333393A (en) | Processing method for radioactive miscellaneous solid waste | |
| JP2003190915A (en) | Method of melting treatment and apparatus therefor | |
| JPH07138054A (en) | Method for treating dioxin-containing dust treating device therefor | |
| JP4361296B2 (en) | Exhaust gas treatment equipment | |
| JP2000117223A (en) | Ash treatment for waste melting treatment device | |
| JP3866832B2 (en) | Method for treating fly ash in exhaust gas in waste treatment equipment | |
| JPH07103980B2 (en) | Exhaust gas treatment method and exhaust gas treatment device | |
| JPH05261359A (en) | Method for treating incineration fly ash of waste | |
| JPH11314073A (en) | Process of turning incineration ash harmless | |
| JPH07265834A (en) | Treatment of fly ash by irradiation with microwave | |
| JP2778307B2 (en) | Pyrolysis method of dioxin in ash discharged from refuse incinerator | |
| JP2570012B2 (en) | Ash treatment method | |
| JP2708948B2 (en) | Fly ash treatment method and apparatus in incineration facility | |
| JPS5678619A (en) | Waste gas treating method of incineration furnace or the like | |
| JPH06109896A (en) | High-temperature melting incinerator and method for high-temperature melting incineration | |
| JPS6038079A (en) | Method and equipment for high temperature melting treatment of waste material | |
| JP3531791B2 (en) | Method and apparatus for melting incinerated fly ash | |
| JPH11101423A (en) | Method of treating boiler combustion ash |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |