JP3214301B2 - Method for producing fine spherical molten granules from sludge incineration ash - Google Patents
Method for producing fine spherical molten granules from sludge incineration ashInfo
- Publication number
- JP3214301B2 JP3214301B2 JP18643695A JP18643695A JP3214301B2 JP 3214301 B2 JP3214301 B2 JP 3214301B2 JP 18643695 A JP18643695 A JP 18643695A JP 18643695 A JP18643695 A JP 18643695A JP 3214301 B2 JP3214301 B2 JP 3214301B2
- Authority
- JP
- Japan
- Prior art keywords
- incineration ash
- sludge incineration
- burner nozzle
- producing fine
- fine spherical
- 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
Landscapes
- Processing Of Solid Wastes (AREA)
- Glanulating (AREA)
- Gasification And Melting Of Waste (AREA)
- Treating Waste Gases (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、汚泥焼却灰を溶融して
微細な球状溶融粒状物を製造する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 producing fine spherical molten granules by melting sludge incineration ash.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】下水や
産業排水を処理して生じた汚泥は、一般にこれを焼却
し、その焼却灰を道路やコンクリ−ト等建設用の材料と
して有効利用することが図られている。焼却灰は、それ
自体では有効利用が難しいため、従来は、これをさらに
溶融処理して固形スラグとするか、焼成によりレンガと
して再生するようにしている。2. Description of the Related Art Generally, sludge generated by treating sewage and industrial wastewater is incinerated, and the incinerated ash is effectively used as construction material for roads and concrete. It is planned. Since it is difficult to effectively use incineration ash by itself, conventionally, incineration ash is further melt-processed into solid slag, or regenerated as brick by firing.
【０００３】焼却灰の溶融処理の場合、スラグは、その
処理方法により水砕スラグか空冷スラグとして得られる
が、いずれにしても強度的に高くなく、自然砕石に比べ
劣る。また、粒度も大であるため、有効利用を行うとす
ると、微細に粉砕することが必要であり、コスト高にな
る。[0003] In the melting treatment of incinerated ash, slag can be obtained as granulated slag or air-cooled slag depending on the treatment method, but in any case, the strength is not high and is inferior to natural crushed stone. In addition, since the particle size is large, it is necessary to pulverize finely for effective use, which increases the cost.
【０００４】本発明は、上記の事情にかんがみ、焼却灰
よりのスラグを低コストで有効利用できるようにするこ
とを目的とするもので、焼却炉より出る焼却灰は、それ
自体平均 40 μm 程度に微細であることから、これをガ
ス中で溶融、固化することができれば、物理的に用途の
広くなる球状の微粒子が得られ、しかも、粉砕という工
程が不要となりコストが安くなることに着目し、その新
規な方法を提供するものである。The present invention has been made in view of the above circumstances, and aims at making it possible to effectively use slag from incineration ash at low cost. The incineration ash emitted from an incinerator itself is about 40 μm on average. Focusing on the fact that if it can be melted and solidified in a gas because it is so fine, spherical particles that can be physically used widely can be obtained, and furthermore, the pulverization step becomes unnecessary and the cost is reduced. To provide a new method.
【０００５】[0005]
【課題を解決するための手段】上記の目的を達成するた
めの本発明の構成について、実施例に対応する図面を参
照して説明すると、本発明は、筒状に形成された炉体１
の基端部にバ−ナ−ノズル２を設け、バ−ナ−ノズル２
の火炎温度を1.300 〜2.000 ℃に保持した状態で、焼却
灰をバ−ナ−ノズル２の中心から噴出させて火炎11の中
を通すことにより、焼却灰の表面を溶融して球状化さ
せ、後、排ガス中で浮遊させながら冷却することを特徴
とするものである。The configuration of the present invention for achieving the above object will be described with reference to the drawings corresponding to the embodiments. The present invention relates to a furnace body 1 formed in a cylindrical shape.
A burner nozzle 2 is provided at the base end of the burner nozzle 2.
While maintaining the flame temperature of 1.300 to 2.000 ° C., incinerated ash is jetted from the center of the burner nozzle 2 and passed through the flame 11 to melt the surface of the incinerated ash to make it spherical. Thereafter, cooling is performed while floating in the exhaust gas.
【０００６】[0006]
【作用】本発明では、高温で燃焼するバ−ナ−ノズル２
の中心部から焼却灰を噴出させる。それによって、焼却
灰は火炎11の中を通過し、その際、瞬間的に溶融され
る。そして、溶融後の焼却灰はガス中で冷却空気の送入
で冷却され、球状の溶融粒状物となる。According to the present invention, a burner nozzle 2 burning at a high temperature is used.
Ash from the center of the incinerator. Thereby, the incineration ash passes through the flame 11, where it is instantaneously melted. The incinerated ash after melting is cooled in the gas by the supply of cooling air, and becomes spherical molten granules.
【０００７】[0007]
【実施例】以下、本発明の実施例について図面を参照し
て説明する。図１は本発明を実施するために用いる装置
の一例を示す概略説明図である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic explanatory view showing an example of an apparatus used to carry out the present invention.
【０００８】図において、Ａは焼却灰を溶融処理する溶
融炉で、炉体１とバ−ナ−ノズル２とよりなる。炉体１
は、横長の円筒状に形成されており、基端が閉じられ、
開放された先端の少し内方部には、炉体１の先端部内に
冷却空気を送入する送気管３が設けられている。In FIG. 1, reference numeral A denotes a melting furnace for melting and processing incinerated ash, which comprises a furnace body 1 and a burner nozzle 2. Furnace body 1
Is formed in a horizontally long cylindrical shape, the base end is closed,
An air supply pipe 3 for feeding cooling air into the front end of the furnace body 1 is provided slightly inside the open front end.
【０００９】バ−ナ−ノズル２は、先端部を狭めた外管
５内に、小径の内管６が、その基端より突入して設けら
れており、内管６の先端と外管５の先端とには所要の間
隔を存している。また、外管５の基端部には、ＬＰＧや
重油、微粉炭等の燃料を給送する燃料管７が接続されて
いる。The burner nozzle 2 has a small-diameter inner tube 6 protruding from a base end thereof in an outer tube 5 having a narrowed distal end. There is a required distance from the tip of the. A fuel pipe 7 for feeding a fuel such as LPG, heavy oil, pulverized coal or the like is connected to a base end of the outer pipe 5.
【００１０】上記の内管６の基端には、焼却灰を送入す
る供給管８と、酸素含有気体を送入する給気管９とが接
続されている。そして、バ−ナ−ノズル２は、炉体１の
基端部内に突入して設けられ、炉体１内には相当の長さ
にわたる溶融ガス室４が形成される。また、炉体１の開
放された先端にはサイクロン等の捕集装置Ｂに至る移送
管10が接続されている。A supply pipe 8 for feeding incineration ash and an air supply pipe 9 for feeding oxygen-containing gas are connected to the base end of the inner pipe 6. The burner nozzle 2 is provided so as to protrude into the base end of the furnace body 1, and a molten gas chamber 4 having a considerable length is formed in the furnace body 1. Further, a transfer pipe 10 leading to a collecting device B such as a cyclone is connected to the open end of the furnace body 1.
【００１１】上記の装置において、焼却炉より出た焼却
灰は供給管８より送られ、給気管９より送られた酸素含
有気体、例えば酸素を多く含んだ空気と合流、混合して
内管６に送入される。他方、外管５内には燃料が給送さ
れて、内管６より噴出する酸素含有気体と合流して燃焼
され、その火炎11はバ−ナ−ノズル２先端つまりは外管
５の先端より溶融ガス室４内に噴出される。それによ
り、内管６より噴出した焼却灰は、噴出した火炎11によ
って溶融される。In the above-described apparatus, the incineration ash discharged from the incinerator is sent from the supply pipe 8 and merges with and mixes with the oxygen-containing gas sent from the air supply pipe 9, for example, air containing a large amount of oxygen. Will be sent to On the other hand, fuel is fed into the outer tube 5 and merges with the oxygen-containing gas ejected from the inner tube 6 and burns, and the flame 11 is emitted from the tip of the burner nozzle 2, that is, from the tip of the outer tube 5. It is jetted into the molten gas chamber 4. Thereby, the incinerated ash spouted from the inner pipe 6 is melted by the spouted flame 11.
【００１２】この場合、火炎温度を 1.300〜2.000 ℃に
保持することが重要である。そのためには、酸素含有気
体の酸素含有量は30〜100 ％とするのがよく、燃料とし
てはＬＰＧや重油或は微粉炭を用いるのが適当である。
それら燃料と焼却灰との割合は、焼却灰５Kg／hvに対し
て、ＬＰＧの場合は0.5 〜1.0 Nm3 ／hv、重油の場合で
は１〜２kg／hv、また、微粉炭の場合では、75μm (200
mesh) のものを80％以上含む微粉炭において、0.4 〜0.
8kg ／hgとするのがよい。また、それに対する上記酸素
含有気体の供給量は2.5 〜５Nm3 ／hvとするのが好適で
ある。In this case, it is important to keep the flame temperature between 1.300 and 2.000 ° C. For this purpose, the oxygen content of the oxygen-containing gas is preferably 30 to 100%, and LPG, heavy oil or pulverized coal is suitably used as the fuel.
The ratio between the fuel and the incinerated ash is 0.5 to 1.0 Nm 3 / hv for LPG, 1-2 kg / hv for heavy oil, and 75 μm for pulverized coal for 5 kg / hv of incinerated ash. (200
pulverized coal containing at least 80% of
8kg / hg is recommended. It is preferable that the supply amount of the oxygen-containing gas is 2.5 to 5 Nm 3 / hv.
【００１３】焼却灰は、バ−ナ−ノズル２の中心から噴
出して火炎11の中を通り、その熱により焼却灰の各微粉
粒子は表面が溶融されて球状化する。火炎を通過した焼
却灰は、送気管３より送入された冷却空気によって冷却
され、球状化した溶融スラグとなり、溶融炉１より出て
捕集装置Ｂに送られる。捕集装置Ｂは、焼却灰の溶融粒
状物が粒度に応じて分級できるように、サイクロンまた
はダストフィルタ−を用いるのがよい。The incinerated ash is blown out from the center of the burner nozzle 2 and passes through the flame 11, and the heat causes the fine powder particles of the incinerated ash to melt and spheroidize. The incinerated ash that has passed through the flame is cooled by the cooling air sent from the air supply pipe 3, turns into a spheroidized molten slag, exits the melting furnace 1, and is sent to the collection device B. It is preferable to use a cyclone or a dust filter as the trapping device B so that the molten granules of the incinerated ash can be classified according to the particle size.
【００１４】[0014]
【発明の効果】以上説明したように、本発明によれば、
焼却灰はバ−ナ−ノズルの火炎の中を通すことによっ
て、微細な球状の溶融粒状物に生成できることになる。
したがって、従来のような焼却灰を溶融処理して得られ
る塊状のスラグに比べて圧縮強度が強く、有効利用用途
の広いスラグが得られる。しかも、従来のような粉砕工
程が不要になるとともに、製造が簡便であるから、コス
トの安い溶融粒状物が提供できることになる。As described above, according to the present invention,
By passing the incinerated ash through the flame of the burner nozzle, it can be formed into fine spherical molten granules.
Accordingly, slag having a higher compressive strength than conventional slag obtained by melting incineration ash and having a wide range of effective use can be obtained. In addition, since a conventional pulverizing step is not required and the production is simple, it is possible to provide a low-cost molten granular material.
【図１】本発明の一実施例を示す概略説明図である。FIG. 1 is a schematic explanatory view showing one embodiment of the present invention.
Ａ 溶融炉 Ｂ 捕集装置 １ 炉体 ２ バ−ナ−ノズル ３ 送気管 ４ 溶融ガス室 ５ 外管 ６ 内管 ７ 燃料管 ８ 供給管 ９ 給気管 10 移送管 11 火炎 Reference Signs List A melting furnace B collecting device 1 furnace body 2 burner nozzle 3 air supply pipe 4 melting gas chamber 5 outer pipe 6 inner pipe 7 fuel pipe 8 supply pipe 9 supply pipe 10 transfer pipe 11 flame
───────────────────────────────────────────────────── フロントページの続き (72)発明者 地田 靖 東京都中央区日本橋室町３−１−３ 株 式会社クボタ 東京本社内 (56)参考文献 特開 平４−42842（ＪＰ，Ａ) 特開 平４−285043（ＪＰ，Ａ) 国際公開92／7803（ＷＯ，Ａ１) (58)調査した分野(Int.Cl.7，ＤＢ名) B09B 3/00 303 B09B 5/00 B01J 2/00 - 2/30 C04B 2/00 - 32/02 ──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Yasushi Chida 3-1-3 Nihonbashi Muromachi, Chuo-ku, Tokyo Kubota Corporation Tokyo Headquarters (56) References JP-A-4-42842 (JP, A) Kaihei 4-285043 (JP, A) International Publication 92/7803 (WO, A1) (58) Fields investigated (Int. Cl. 7 , DB name) B09B 3/00 303 B09B 5/00 B01J 2/00- 2/30 C04B 2/00-32/02
Claims (1)
−ノズルを設け、バ−ナ−ノズルの火炎温度を1300〜20
00℃に保持した状態で、汚泥の焼却灰をバ−ナ−ノズル
の中心から噴出させて火炎の中を通すことにより、汚泥
焼却灰の各微粒子の表面を溶融して球状化させ、後、排
ガス中で浮遊させながら冷却することを特徴とする、汚
泥焼却灰より微細な球状溶融粒状物を製造する方法。A burner nozzle is provided at a base end of a cylindrical furnace body, and a flame temperature of the burner nozzle is set to 1300 to 20.
While keeping the temperature at 00 ° C., the sludge incineration ash is blown out from the center of the burner nozzle and passed through a flame, thereby melting and spheroidizing the surface of each fine particle of the sludge incineration ash. A method for producing fine spherical molten granules from sludge incineration ash, characterized by cooling while floating in exhaust gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18643695A JP3214301B2 (en) | 1995-06-29 | 1995-06-29 | Method for producing fine spherical molten granules from sludge incineration ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18643695A JP3214301B2 (en) | 1995-06-29 | 1995-06-29 | Method for producing fine spherical molten granules from sludge incineration ash |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0910731A JPH0910731A (en) | 1997-01-14 |
| JP3214301B2 true JP3214301B2 (en) | 2001-10-02 |
Family
ID=16188420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18643695A Expired - Fee Related JP3214301B2 (en) | 1995-06-29 | 1995-06-29 | Method for producing fine spherical molten granules from sludge incineration ash |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3214301B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4988164B2 (en) * | 2005-03-08 | 2012-08-01 | 株式会社日清製粉グループ本社 | Fine particle manufacturing method and apparatus |
| KR100766137B1 (en) * | 2006-04-24 | 2007-10-11 | 한국에너지기술연구원 | Burner for pulverized fuel made from food waste |
| KR101131932B1 (en) * | 2011-06-30 | 2012-04-03 | 서울대학교산학협력단 | Facility and method for manufacturing granular filler using bottom ash of thermal power station |
| CN115069166A (en) * | 2022-06-15 | 2022-09-20 | 中国科学院过程工程研究所 | System device for preparing spherical particles from sludge and operation method and application thereof |
-
1995
- 1995-06-29 JP JP18643695A patent/JP3214301B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0910731A (en) | 1997-01-14 |
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