JP2738807B2 - Impact ash melting equipment - Google Patents
Impact ash melting equipmentInfo
- Publication number
- JP2738807B2 JP2738807B2 JP5218648A JP21864893A JP2738807B2 JP 2738807 B2 JP2738807 B2 JP 2738807B2 JP 5218648 A JP5218648 A JP 5218648A JP 21864893 A JP21864893 A JP 21864893A JP 2738807 B2 JP2738807 B2 JP 2738807B2
- Authority
- JP
- Japan
- Prior art keywords
- melting
- impact
- ash
- furnace
- injection nozzle
- 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
- Gasification And Melting Of Waste (AREA)
- Processing Of Solid Wastes (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は衝撃式溶融装置に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an impact type melting apparatus.
【０００２】[0002]
【従来の技術】焼却灰等の成分中には揮発成分が含まれ
ており、これは高温で発泡するため、ガス抜きをする必
要がある。従来は、バーナにより焼却灰の表面から順次
溶融して行く方法であり、この方法を実行するための装
置として、傾斜反射炉、旋回溶融炉、電気溶融炉等の種
々のものがある。2. Description of the Related Art Ingredients such as incinerated ash contain volatile components, which foam at a high temperature and must be degassed. Conventionally, the incineration ash is sequentially melted from the surface of the incineration ash by a burner, and there are various apparatuses for performing this method, such as an inclined reflection furnace, a rotating melting furnace, and an electric melting furnace.
【０００３】[0003]
【発明が解決するための課題】前記した炉では、ダスト
が排気等により外部へ飛散することが多い。また、溶融
を輻射伝熱のみに依存しているため、灰表面の面積等の
必要性から設備が大型化せざるを得なかった。また、電
気溶融炉では、ダストの飛散は抑えられるものの、溶融
エネルギコストが非常に高く、且つ電極等の消耗が激し
いため、操業コストの面で大きな課題があった。In the furnace described above, dust often scatters to the outside due to exhaust gas or the like. In addition, since the melting depends only on the radiation heat transfer, the equipment has to be enlarged due to the necessity of the area of the ash surface and the like. Further, in the electric melting furnace, although scattering of dust can be suppressed, the melting energy cost is extremely high, and the consumption of electrodes and the like is severe.
【０００４】[0004]
【課題を解決するための手段】前記課題を解決するため
に、本発明は、炉体に、ガスと酸化剤に灰を混合した混
合物を燃焼しながら噴射する噴射ノズルを設置し、該噴
射ノズルの対向壁の炉体には、前記燃焼ガスが、その先
端部に衝突する溶融促進体を設置したことを特徴とする
ものである。In order to solve the above-mentioned problems, the present invention provides a furnace body provided with an injection nozzle for injecting a mixture obtained by mixing ash with a gas and an oxidant while burning the mixture. The furnace body of the opposing wall is characterized in that a melting promoting body is provided so that the combustion gas collides with a tip portion thereof.
【０００５】また、本発明は、溶融促進体は、セラミッ
クス製とし、その先端部の縦断面形状が円形状の構成と
したことを特徴とするものである。[0005] Further, the present invention is characterized in that the fusion promoting body is made of ceramics, and the longitudinal section of its tip is circular.
【０００６】また、本発明は、溶融促進体は、セラミッ
クス製とし、その先端部の形状は、円柱を斜目に切断し
た構成にしたことを特徴とするものである。Further, the present invention is characterized in that the fusion promoting body is made of ceramics, and the shape of the tip is formed by cutting a cylinder into bevels.
【０００７】 また、本発明は、溶融促進体は、回転自
在とすると共に進退自在としたことを特徴とするもので
ある。[0007] Further, the present invention is characterized in that the melting accelerator is rotatable and movable forward and backward.
【０００８】[0008]
【作用】噴射ノズル内では、ガスと酸化剤（酸素又は高
温空気）が混合しながら燃焼を開始し、かかる燃焼初期
に於いて、灰を供給し、更に混合しながら燃焼する。か
かる燃焼反応と共に、灰の粒子は表面より溶融を開始す
る。かかる反応途中の高温混合物は、噴射ノズルから高
速で噴出し、溶融促進体の先端部に衝突して燃焼溶融が
進行する。かかる際、溶融促進体の先端部の形状を、そ
の縦断面形状が円形状とすることにより、前記衝突物の
飛散を炉内壁に均一に供給し、溶融燃焼を一層促進させ
ることができる。また、円柱を斜目に切断した形状とす
ることにより、前記衝突物の飛散を炉内壁に自在に方向
性を持たせながら、溶融燃焼を一層促進させることがで
きる。更に、前記溶融促進体を回転させることによって
進退自在とすることにより、噴出ノズルから溶融促進体
までの距離を一定に保持することができる。即ち、材料
の成分や処理量により、また温度や溶融状態から、前記
距離を一定に保つ必要があるが、溶融促進体の先端部は
消耗が激しくこれのコントロールは困難きわまるが、本
発明は、溶融促進体を進退自在として、それの位置制御
を最適位置とすることができる。In the injection nozzle, combustion starts while the gas and the oxidant (oxygen or high-temperature air) are mixed, and in the early stage of the combustion, ash is supplied and the mixture is further mixed and burned. With such a combustion reaction, the ash particles begin to melt from the surface. The high-temperature mixture during the reaction is ejected at a high speed from the injection nozzle, collides with the tip of the melting promoting body, and the combustion and fusion proceeds. At this time, by making the shape of the distal end portion of the fusion promoting body a circular cross section, the scattering of the collision object can be uniformly supplied to the furnace inner wall, and the fusion combustion can be further promoted. In addition, by forming the column into a cut shape, the melting and burning can be further promoted while the scattering of the collision object has a directivity on the inner wall of the furnace. Further, the distance from the ejection nozzle to the melting promoting body can be kept constant by rotating the melting promoting body so as to be able to advance and retreat. That is, it is necessary to keep the distance constant, depending on the components and processing amount of the material, and from the temperature and the molten state, but the tip of the fusion promoting body is severely consumed and it is difficult to control it. The position of the melting accelerator can be set to an optimum position by allowing the melting accelerator to move forward and backward.
【０００９】[0009]
【実施例】符号１は炉体であり、この炉体１に、ガスと
酸化剤に灰を混合した混合物を燃焼しながら噴射する噴
射ノズル２を設置する。そして該噴射ノズル２が対向す
る炉内壁には、溶融促進体３を設置する。溶融促進体３
の先端部４の形状は、図示の通り、その縦断面形状が円
形状の構成としてもよく、また円柱を斜目に切断した構
成でもよい。溶融促進体３は回転自在とすると共に進退
自在に構成する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference numeral 1 denotes a furnace body, on which a spray nozzle 2 for injecting while burning a mixture of gas and oxidant with ash is installed. Then, on the inner wall of the furnace facing the injection nozzle 2, a melting accelerator 3 is provided. Melting accelerator 3
As shown in the figure, the shape of the distal end portion 4 may be a configuration in which the vertical cross-sectional shape is a circular shape, or a configuration in which a cylinder is cut into a bevel. The melting accelerator 3 is configured to be freely rotatable and move forward and backward.
【００１０】しかして、噴射ノズル２内にガスと酸化剤
（高温予熱空気又は酸素）が導入され燃焼が開始すると
共にかかる燃焼ガス中に焼却灰が混入され燃焼する。か
かる燃焼反応と共に、灰の粒子はその表面より溶融を開
始する。かかる反応途中の高温混合物は、噴射ノズル２
から高速で噴出し、溶融促進体３の先端部４に衝突して
燃焼溶融が進行する。かかる際、溶融促進体３の先端部
４の形状を、その縦断面形状が円形状とすることによ
り、前記衝突物即ち、高温混合物の飛散を炉内壁５に均
一に供給し、溶融燃焼を一層促進させることができる。
また、円柱を斜目に切断した形状とすることにより、前
記衝突物の飛散を炉内壁５に対して自在に方向性を持た
せなから衝突させ、溶融燃焼を一層促進させることがで
きる。更に、前記溶融促進体３を回転させることによっ
て進退自在とすることにより、噴出ノズル２から溶融促
進体３までの距離を一定に保持することができる。即
ち、材料の成分や処理量により、また温度や溶融状態か
ら、前記距離を一定に保つ必要があるが、溶融促進体３
の先端部４は消耗が激しくこれのコントロールは困難き
わまる。しかしながら、本発明は、溶融促進体３を進退
自在として、それの位置制御を最適位置とすることがで
容易である。噴射ノズル２からの噴射物の粒度が高い場
合には、耐久性の面及び均一飛散の面から考慮して溶融
促進体３の先端部４の形状は縦断面形状が円形状のもの
がよい。回転軸は、ＧＬに対し、水平でもよいが（図
２）、垂直は、溶融物の観点から無理であり、また噴射
ノズルを下側にすることも避けたいので、ＧＬに対し、
０°〜６０°の間がよい。図１ではほぼ４５°の位置に
設けた。しかして、５００℃以上の高温空気を酸化剤と
して利用する場合、天然ガス１m3当りの灰の処理量３〜
１０ｋｇであり、その時の原単位は１０００〜３０００
ｋｃａｌ／ｋｇとなる。炉温は灰の成分により異なる
が、１２００〜１６００℃である。Thus, the gas and the oxidizing agent (high-temperature preheated air or oxygen) are introduced into the injection nozzle 2 to start the combustion, and the incineration ash is mixed into the combustion gas and burned. With such a combustion reaction, the ash particles begin to melt from their surface. The high-temperature mixture during the reaction is supplied to the injection nozzle 2
At high speed, and collides with the tip portion 4 of the fusion promoting body 3 to cause combustion and fusion to proceed. At this time, by making the shape of the distal end portion 4 of the fusion promoting body 3 circular in longitudinal section, the colliding object, that is, the scatter of the high-temperature mixture is uniformly supplied to the furnace inner wall 5, and the melting combustion is further enhanced. Can be promoted.
In addition, by making the column a shape cut into a bevel, the scattering of the collision object can be made to collide with the inner wall 5 of the furnace without giving any direction, and the melting and burning can be further promoted. Further, the distance from the ejection nozzle 2 to the fusion promoting body 3 can be kept constant by rotating the fusion promoting body 3 so as to be able to advance and retreat. That is, it is necessary to keep the distance constant depending on the components of the material and the processing amount, and from the temperature and the molten state.
The tip 4 of the vehicle is extremely worn, and it is difficult to control this. However, in the present invention, it is easy to make the melting promoter 3 advance and retreat freely, and to control the position thereof to the optimum position. When the particle size of the ejected material from the ejection nozzle 2 is high, the shape of the distal end portion 4 of the fusion promoting body 3 preferably has a circular vertical cross section in consideration of durability and uniform scattering. The rotation axis may be horizontal with respect to the GL (FIG. 2), but the vertical is impossible from the viewpoint of the melt and it is desired to avoid lowering the injection nozzle.
Preferably between 0 ° and 60 °. In FIG. 1, it is provided at a position substantially at 45 °. Therefore, when high-temperature air of 500 ° C. or more is used as an oxidizing agent, the amount of ash processed per m 3 of natural gas is 3 to
It is 10kg, and the basic unit at that time is 1000-3000
kcal / kg. The furnace temperature varies from 1200 to 1600 ° C., depending on the components of the ash.
【００１１】[0011]
【発明の効果】本発明は以上の通りであるので、次の諸
効果がある。溶融促進体の位置を常に一定にして激突
飛散溶融状態を効果的に実行することができる。溶融
促進体の先端部形状を変化させて材料の諸条件に合致さ
せ、溶融促進状態を最上とすることができる。火炎中
に灰粒子が存在し、溶融を開始するため、火炎温度が下
がり、空気燃焼させる場合、窒素酸化物の濃度が低下す
る。As described above, the present invention has the following effects. The collision scattering body can be effectively executed by keeping the position of the melting accelerator constant. By changing the shape of the tip of the fusion promoting body to match the conditions of the material, the state of promoting fusion can be maximized. Since ash particles are present in the flame and start melting, the flame temperature decreases, and when air combustion is performed, the concentration of nitrogen oxides decreases.
【００１２】[0012]
【図１】本発明実施例を示す断面的説明図である。FIG. 1 is a sectional explanatory view showing an embodiment of the present invention.
【図２】本発明の他の実施例を示す断面的説明図であ
る。FIG. 2 is a sectional explanatory view showing another embodiment of the present invention.
【図３】溶融促進体の先端部の説明図である。FIG. 3 is an explanatory diagram of a distal end portion of a fusion promoting body.
１ 炉体 ２ 噴射ノズル ３ 溶融促進体 ４ 先端部 ５ 炉内壁 ６ 排気ガス出口 ７ 溜まり部 ８ 受容器 DESCRIPTION OF SYMBOLS 1 Furnace body 2 Injection nozzle 3 Melting promoter 4 Tip part 5 Furnace inner wall 6 Exhaust gas outlet 7 Reservoir part 8 Receptor
Claims (4)
混合物を燃焼しながら噴射する噴射ノズルを設置し、該
噴射ノズルの対向壁の炉体には、前記燃焼ガスが、その
先端部に衝突する溶融促進体を設置したことを特徴とす
る衝撃式灰溶融措置。An injection nozzle for injecting a mixture obtained by mixing a gas and an oxidant with ash is installed in a furnace body, and the combustion gas is supplied to a furnace body on an opposite wall of the injection nozzle. Impact-type ash melting measures characterized by the installation of a melting accelerator that collides with the tip.
の先端部の縦断面図形状が円形状の構成としたことを特
徴とする第１項記載の衝撃灰溶融装置。2. The impact ash melting apparatus according to claim 1, wherein the melting promoting body is made of ceramics, and a longitudinal section at a tip portion thereof has a circular configuration.
先端部の形状は、円柱を斜目に切断した構成にしたこと
を特徴とする第１項記載の衝撃式灰溶融装置。3. The impact-type ash melting apparatus according to claim 1, wherein the melting promoting body is made of ceramic, and a shape of a tip portion thereof is formed by cutting a cylinder into a bevel.
退自在に構成したことを特徴とする第１項記載の衝撃式
溶融装置。4. The impact-type melting device according to claim 1, wherein the melting accelerator is configured to be able to move forward and backward by rotating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5218648A JP2738807B2 (en) | 1993-09-02 | 1993-09-02 | Impact ash melting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5218648A JP2738807B2 (en) | 1993-09-02 | 1993-09-02 | Impact ash melting equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0771738A JPH0771738A (en) | 1995-03-17 |
| JP2738807B2 true JP2738807B2 (en) | 1998-04-08 |
Family
ID=16723246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5218648A Expired - Fee Related JP2738807B2 (en) | 1993-09-02 | 1993-09-02 | Impact ash melting equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2738807B2 (en) |
-
1993
- 1993-09-02 JP JP5218648A patent/JP2738807B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0771738A (en) | 1995-03-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |