JP2799550B2 - Melting furnace - Google Patents
Melting furnaceInfo
- Publication number
- JP2799550B2 JP2799550B2 JP7010421A JP1042195A JP2799550B2 JP 2799550 B2 JP2799550 B2 JP 2799550B2 JP 7010421 A JP7010421 A JP 7010421A JP 1042195 A JP1042195 A JP 1042195A JP 2799550 B2 JP2799550 B2 JP 2799550B2
- Authority
- JP
- Japan
- Prior art keywords
- melting furnace
- combustion gas
- gas
- incineration ash
- melting
- 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 - Lifetime
Links
Classifications
-
- Y02E20/344—
Landscapes
- Air Supply (AREA)
- Incineration Of Waste (AREA)
- Gasification And Melting Of Waste (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は都市ゴミ，下水汚泥，産
業廃棄物などを焼却して得られた焼却灰を溶融処理する
溶融炉に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a melting furnace for melting and treating incinerated ash obtained by incinerating municipal waste, sewage sludge, industrial waste and the like.
【０００２】[0002]
【従来の技術発明が解決しようとする課題】一般に都市
ゴミ，下水汚泥，産業廃棄物などの焼却灰は埋め立て廃
棄されている。しかし、近年埋め立て地の確保が困難な
ことから有用利用及び減容等が要請されており、最近可
燃性ガスを燃焼させ、それを熱源として焼却灰を溶融せ
しめる焼却灰の溶融固化手段が提案されている。2. Description of the Related Art Generally, incinerated ash such as municipal garbage, sewage sludge, and industrial waste is landfilled. However, since it is difficult to secure landfill sites in recent years, useful utilization and volume reduction have been demanded, and recently, incineration ash melting and solidifying means for burning combustible gas and using it as a heat source to melt incineration ash has been proposed. ing.
【０００３】しかしながら、この焼却灰の溶融固化手段
は、粒径の小さい粉末の焼却灰の場合、燃焼ガスの流速
により飛散し、効率的な処理ができず、また、可燃性ガ
スに空気を混合して燃焼ガスを得るとＮＯXが発生する
などの欠点がある。[0003] However, in the case of incinerated ash having a small particle diameter, this incineration ash melting and solidifying means is scattered due to the flow rate of the combustion gas, so that efficient treatment cannot be performed, and air is mixed with the combustible gas. and NO X obtains a combustion gas there is a disadvantage such as generation.
【０００４】本発明はこのような欠点を解決したもの
で、粒径の小さい粉末灰でも飛散することなく溶融し、
ＮＯXの発生を可及的に抑えつつ効率的に焼却灰を無害
化処理する溶融炉を提供するものである。[0004] The present invention has solved the above-mentioned drawbacks. Even powder ash having a small particle size can be melted without scattering,
An object of the present invention is to provide a melting furnace for efficiently detoxifying incinerated ash while suppressing generation of NO X as much as possible.
【０００５】[0005]
【課題を解決するための手段】添付図面を参照して本発
明の要旨を説明する。The gist of the present invention will be described with reference to the accompanying drawings.
【０００６】ゴミや産業廃棄物等の焼却灰１を溶融処理
する溶融炉２であって、粉状の焼却灰１を溶融炉２に導
入する導入管９の導入開口部外周に可燃性ガスを供給す
る供給管８'の供給開口部及び酸素を供給する供給管８"
の供給開口部が形成され酸素と可燃性ガスとの混焼によ
り燃焼ガスを発生させて粉状の焼却灰１を溶融せしめる
バーナー８を溶融炉２に設け、該バーナー８により溶融
した溶融物を溜める溜め部４を溶融炉２の底に設け、該
溜め部４に粒状の焼却灰１を導入する導入管11を溶融炉
２に設け、燃焼ガスを導入し内部に充填物を充填した燃
焼ガス導入部５を溶融炉２に連設し、該燃焼ガス導入部
に排気口15を連設したことを特徴とする溶融炉に係るも
のである。[0006] A melting furnace 2 to melt process the ash 1 such as dust and industrial waste, guiding the ash 1 pulverulent the melting furnace 2
Flammable gas is supplied to the outer periphery of the introduction opening of the introduction pipe 9 to be introduced.
Supply opening of supply pipe 8 'and supply pipe 8 "for supplying oxygen
The burner 8 is provided in the melting furnace 2 to generate a combustion gas by co-firing of oxygen and a combustible gas to melt the powdered incinerated ash 1, and to store the molten material melted by the burner 8. the reservoir 4 is provided in the bottom of the melting furnace 2, the
The introduction pipe 11 for introducing the granular incineration ash 1 into the reservoir 4 is connected to a melting furnace.
Provided in two, the combustion <br/> sintered gas inlet 5 filled with filler therein by introducing the combustion gas continuously to a melting furnace 2, the combustion gas inlet
A melting furnace in which an exhaust port 15 is connected to the melting furnace.
【０００７】請求項１記載の溶融炉において、燃焼ガス
導入部５内に導入される燃焼ガスを加熱する加熱手段を
設けたことを特徴とする溶融炉に係るものである。According to the first aspect of the present invention, there is provided a melting furnace, wherein a heating means for heating the combustion gas introduced into the combustion gas introduction section 5 is provided.
【０００８】請求項１記載の溶融炉において、充填物６
として耐火物を採用したことを特徴とする溶融炉に係る
ものである。[0008] In the melting furnace according to claim 1, the filling material 6
The present invention relates to a melting furnace characterized in that a refractory is used.
【０００９】請求項１記載の溶融炉において、充填物６
として可燃物を採用したことを特徴とする溶融炉に係る
ものである。[0009] In the melting furnace according to claim 1, the filling material 6
The present invention relates to a melting furnace characterized in that a combustible material is used as the material.
【００１０】[0010]
【作用】焼却灰１をバーナー８の燃焼ガスにより直接溶
融せしめる為、熱効率が良く、効率的且つ迅速な溶融が
できる。未溶融の粉体状の焼却灰１や燃焼ガスで溶融さ
れて生ずる粉体状の残渣が溶融炉２内で浮遊していて
も、該焼却灰１及び残渣は溶融炉２から燃焼ガスととも
に燃焼ガス導入部５に導入され、該燃焼ガス導入部５内
の高温に加熱された充填物６により捕獲され、再加熱さ
れて溶融して滴下し溶融炉２の溜め部４に貯まる。よっ
て、溶融炉２からの排ガスのダスト濃度は最小限度のも
のとなる。Since the incineration ash 1 is directly melted by the combustion gas of the burner 8, the heat efficiency is high, and the melting can be performed efficiently and quickly. Even if unmelted powdery incineration ash 1 or powdery residue generated by melting with combustion gas is floating in the melting furnace 2, the incineration ash 1 and the residue are burned together with the combustion gas from the melting furnace 2. The gas is introduced into the gas introduction unit 5, captured by the high-temperature heated filler 6 in the combustion gas introduction unit 5, reheated, melted, dropped, and stored in the reservoir 4 of the melting furnace 2. Therefore, the dust concentration of the exhaust gas from the melting furnace 2 becomes the minimum.
【００１１】更に、粒状の焼却灰１は、溶融炉２の底の
溜め部４に導入するから、粒状の焼却灰１は溜め部４で
溶融している溶融物の熱及びバーナー８からの燃焼ガス
の熱により非常に効率良く溶融される。 Further, the granular incinerated ash 1 is provided at the bottom of the melting furnace 2.
Since the incinerated ash 1 is introduced into the reservoir 4, the granular ashes 1
Heat of the molten material and combustion gas from the burner 8
Is very efficiently melted by the heat of
【００１２】[0012]
【実施例】図面は本発明の一実施例を図示したもので、
以下に説明する。BRIEF DESCRIPTION OF THE DRAWINGS The drawings illustrate one embodiment of the present invention.
This will be described below.
【００１３】燃焼空間７を有する溶融炉２は耐火材によ
り耐火構造に構成され、底部に溜め部４が形成されてい
る。溶融炉２の頂部には焼却灰１を溶融炉２内に導入す
る導入管９が設けられ、この導入管９の外側にはバーナ
ー８が設けられている。具体的には導入管９の外側に可
燃性ガス（ＬＰＧ）の供給管８’が繞設され、更に供給
管８’の外側には酸素の供給管８”が繞設されている。
導入管９の上部には供給機10が連設され、この供給機10
には焼却灰１を貯めるホッパー13が連設されている。こ
のホッパー13に貯める焼却灰１は直ちに可燃ガスと酸素
との混焼により生ずる燃焼ガスで溶融される為、可及的
に粒径の小さい焼却灰１が望ましい（望ましくは径１ｍ
ｍ以下）。The melting furnace 2 having a combustion space 7 has a refractory structure made of a refractory material, and a reservoir 4 is formed at the bottom. An introduction pipe 9 for introducing the incinerated ash 1 into the melting furnace 2 is provided at the top of the melting furnace 2, and a burner 8 is provided outside the introduction pipe 9. Specifically, a flammable gas (LPG) supply pipe 8 ′ is provided outside the introduction pipe 9, and an oxygen supply pipe 8 ″ is provided outside the supply pipe 8 ′.
A feeder 10 is connected to the upper part of the introduction pipe 9 and is connected to the feeder 10.
A hopper 13 for storing incineration ash 1 is connected to the hopper 13. Since the incineration ash 1 stored in the hopper 13 is immediately melted by the combustion gas generated by the co-firing of the combustible gas and oxygen, the incineration ash 1 having the smallest possible particle size is desirable (preferably 1 m in diameter).
m or less).
【００１４】また、溶融炉２の側部には固形状の粗粒焼
却灰１を溶融炉２内に導入する導入管11が設けられ、こ
の導入管11により焼却灰１は溶融炉２の底の溜め部４に
導入される。この導入管11の上部には供給機12が連設さ
れ、この供給機12には焼却灰１を貯めるホッパー３が連
設されている。このホッパー３に貯められる焼却灰１は
溜め部４で溶融している溶融物の熱及びバーナー８から
の燃焼ガスの熱により溶融される。該焼却灰１は、可及
的に上方に舞い上がらないようホッパー13に貯める焼却
灰１のように粉状ではなく、粒状の方が望ましい。An introduction pipe 11 for introducing solid coarse incineration ash 1 into the melting furnace 2 is provided at a side portion of the melting furnace 2. Into the reservoir 4. A feeder 12 is connected to the upper part of the introduction pipe 11, and a hopper 3 for storing the incineration ash 1 is connected to the feeder 12. The incineration ash 1 stored in the hopper 3 is melted by the heat of the molten material in the reservoir 4 and the heat of the combustion gas from the burner 8. The incineration ash 1 is preferably not granular but granular like the incineration ash 1 stored in the hopper 13 so as not to fly upward as much as possible.
【００１５】また、溶融炉２の溜め部４には溶融物排出
口14が形成され、上側がスラグ出湯口14ａ、下側がメタ
ル出湯口14ｂである。Further, a molten material outlet 14 is formed in the reservoir 4 of the melting furnace 2, and an upper side is a slag outlet 14a and a lower side is a metal outlet 14b.
【００１６】また、溶融炉２の一側上部には耐火材で形
成した筒状の燃焼ガス導入部５が連設され、この燃焼ガ
ス導入部５には充填物６として例えばセラミック等の耐
火物やコークス等の可燃物が詰入され、この燃焼ガス導
入部５の上部には排ガスを排出する排気口15が形成され
ている。この燃焼ガス導入部５の底５ａは溶融物が滴下
し得るように傾斜状態に形成されている。A cylindrical combustion gas introduction section 5 made of a refractory material is connected to an upper portion of one side of the melting furnace 2. The combustion gas introduction section 5 has a filler 6 as a filler 6 such as a refractory material such as a ceramic. An exhaust port 15 for discharging exhaust gas is formed at an upper portion of the combustion gas introduction section 5. The bottom 5a of the combustion gas introduction section 5 is formed in an inclined state so that a melt can be dropped.
【００１７】また、溶融炉２と燃焼ガス導入部５との連
設部には補助バーナー16が設けられている。An auxiliary burner 16 is provided at a portion where the melting furnace 2 and the combustion gas introducing portion 5 are connected.
【００１８】本実施例は上述のように構成したから次の
作用効果を有する。This embodiment has the following functions and effects because it is configured as described above.
【００１９】供給管８’から噴出する可燃ガスは供給管
８”から噴出する酸素と混焼し、燃焼ガス（約2500℃程
度）となって溶融炉２内に噴出する。導入管９から供給
機10により定量づつ溶融炉２内に導入された焼却灰１は
この高温に燃焼している燃焼ガスの火焔の中へ供給さ
れ、急激な熱伝導により融点まで加熱され、溶融して溜
め部４に溜まる。The combustible gas ejected from the supply pipe 8 ′ is mixed with oxygen ejected from the supply pipe 8 ″ to become a combustion gas (about 2500 ° C.) and ejected into the melting furnace 2. The incineration ash 1 introduced into the melting furnace 2 by a fixed amount according to 10 is supplied into the flame of the combustion gas burning at a high temperature, heated to the melting point by rapid heat conduction, melted and stored in the reservoir 4. Accumulate.
【００２０】この燃焼の際、空気を用いず、酸素を用い
る為、ＮＯXの生成を可及的に抑制し得るとともに必要
十分な高温の燃焼ガスが得られることになる。[0020] During the combustion, without the use of air, since oxygen is used, so that the necessary and sufficient high-temperature combustion gases obtained with can be suppressed as much as possible the production of NO X.
【００２１】また、導入管11から溶融炉２内に導入され
た焼却灰１は溜め部４に貯められている溶融物の熱及び
燃焼ガスの熱により溶融される。The incineration ash 1 introduced into the melting furnace 2 from the introduction pipe 11 is melted by the heat of the molten material stored in the reservoir 4 and the heat of the combustion gas.
【００２２】燃焼ガスは燃焼ガス導入部５を通過し、排
気口15から排出される訳であるが、燃焼ガスは燃焼ガス
導入部５中の加熱されている充填物６と衝突する為、燃
焼ガス中の未溶融の粉状の焼却灰１や燃焼ガスで溶融さ
れて生ずる粉体状の残渣は該充填物６に付着し、捕獲さ
れて溶融し、溜め部４に滴下する。The combustion gas passes through the combustion gas introduction section 5 and is discharged from the exhaust port 15. However, since the combustion gas collides with the heated filling 6 in the combustion gas introduction section 5, the combustion gas is burned. The unmelted powdery incineration ash 1 in the gas and the powdery residue generated by being melted by the combustion gas adhere to the filler 6, are captured and melted, and dropped into the reservoir 4.
【００２３】従って、排気口15から排出される排ガスの
ダスト濃度は可及的に低減し、よって、無害化状態の排
ガスが排気口15から排出される為、該排気口15に連設さ
れた公知の排ガス処理装置への負担が軽減される。Therefore, the dust concentration of the exhaust gas discharged from the exhaust port 15 is reduced as much as possible, and thus, the harmless exhaust gas is discharged from the exhaust port 15 . The burden on the known exhaust gas treatment device is reduced.
【００２４】溶融炉２の底部に溜まった溶融物は該溶融
炉２内が所定温度に保持されている為、常に溶融状態で
あり、よって、スラグ出湯口14ａ，メタル出湯口14ｂか
ら夫々出湯され、処理設備（図示省略）により処理さ
れ、再利用に供される。The molten material accumulated at the bottom of the melting furnace 2 is always in a molten state because the inside of the melting furnace 2 is maintained at a predetermined temperature, and is discharged from the slag outlet 14a and the metal outlet 14b, respectively. , And are processed by a processing facility (not shown) and reused.
【００２５】高融点の焼却灰１の場合は補助バーナー16
により燃焼ガスを所定温度にまで上昇させることが望ま
しい。In the case of incineration ash 1 having a high melting point, an auxiliary burner 16
It is desirable to raise the combustion gas to a predetermined temperature.
【００２６】充填物６が可燃物例えばコークスの場合に
は、該コークスは上記粉状の焼却灰１や残渣が付着した
まま焼却溶融し、溜め部４に滴下する。このように充填
物６として可燃物を採用した場合には補助バーナー16か
ら燃焼ガスを噴出する代わりに酸素を供給するだけで良
い。When the filling material 6 is a combustible material, for example, coke, the coke is incinerated and melted with the powdered incinerated ash 1 and the residue attached thereto, and is dropped into the reservoir 4. When a combustible material is used as the filler 6, it is sufficient to supply oxygen instead of ejecting the combustion gas from the auxiliary burner 16.
【００２７】尚、焼却灰１には必要によって、スラグの
塩基度（ＣａＯ/Ｏ2）を調整するために副資材（例えば
ＣａＣＯ3又はＣａＯ）を混合することもできる。Incidentally, if necessary, an auxiliary material (for example, CaCO 3 or CaO) can be mixed with the incinerated ash 1 in order to adjust the basicity (CaO / O 2 ) of the slag.
【００２８】また、図２に図示したように酸素を焼却灰
１とともに導入管９から噴出すると、供給機10が不要と
なり（エゼクター原理）、それだけ良好に焼却灰１の溶
融炉２への導入が行われる。Further, as shown in FIG. 2, when oxygen is ejected from the introduction pipe 9 together with the incineration ash 1, the feeder 10 becomes unnecessary (the ejector principle), so that the incineration ash 1 can be more appropriately introduced into the melting furnace 2. Done.
【００２９】[0029]
【発明の効果】本発明は上述のように構成したから、排
ガスのダスト濃度を低減し得るとともに高温溶融が可能
となり、金属等の高融点の焼却灰の処理も良好に行い得
る秀れた溶融炉となる。Since the present invention is constructed as described above, it is possible to reduce the dust concentration of the exhaust gas, to perform high-temperature melting, and to excellently treat incineration ash having a high melting point such as metal. Furnace.
【図１】本実施例の説明断面図である。FIG. 1 is an explanatory sectional view of this embodiment.
【図２】別例の要部の説明断面図である。FIG. 2 is an explanatory sectional view of a main part of another example.
１ 焼却灰 ２ 溶融炉 ４ 溜め部 ５ 燃焼ガス導入部 ６ 充填物 ８ バーナー８’供給管 ８”供給管 ９ 導入管 11 導入管 15 排気口 DESCRIPTION OF SYMBOLS 1 Incineration ash 2 Melting furnace 4 Reservoir part 5 Combustion gas introduction part 6 Filling material 8 Burner 8 'Supply pipe 8 "Supply pipe 9 Introducing pipe 11 Introducing pipe 15 Exhaust port
フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｆ２３Ｌ 7/00 Ｆ２３Ｌ 7/00 Ａ (56)参考文献 特開 平５−346219（ＪＰ，Ａ) 特開 平１−134112（ＪＰ，Ａ) 特開 昭49−98069（ＪＰ，Ａ) 特開 昭51−15583（ＪＰ，Ａ) 特開 昭50−71176（ＪＰ，Ａ) 特開 平５−33919（ＪＰ，Ａ) 特開 平５−39913（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) F23J 1/00 F23G 5/00 115 F23G 5/16 F23L 7/00Continuation of the front page (51) Int.Cl. 6 Identification symbol FI F23L 7/00 F23L 7/00 A (56) References JP-A-5-346219 (JP, A) JP-A-1-134112 (JP, A) JP-A-49-98069 (JP, A) JP-A-51-15583 (JP, A) JP-A-50-71176 (JP, A) JP-A-5-33919 (JP, A) 39913 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) F23J 1/00 F23G 5/00 115 F23G 5/16 F23L 7/00
Claims (4)
する溶融炉であって、粉状の焼却灰を溶融炉に導入する
導入管の導入開口部外周に可燃性ガスを供給する供給管
の供給開口部及び酸素を供給する供給管の供給開口部が
形成され酸素と可燃性ガスとの混焼により燃焼ガスを発
生させて粉状の焼却灰を溶融せしめるバーナーを溶融炉
に設け、該バーナーにより溶融した溶融物を溜める溜め
部を溶融炉の底に設け、該溜め部に粒状の焼却灰を導入
する導入管を溶融炉に設け、燃焼ガスを導入し内部に充
填物を充填した燃焼ガス導入部を溶融炉に連設し、該燃
焼ガス導入部に排気口を連設したことを特徴とする溶融
炉。1. A melting furnace for melting incinerated ash such as garbage and industrial waste, wherein powdery incinerated ash is introduced into the melting furnace.
Supply pipe that supplies flammable gas to the outer periphery of the introduction opening of the introduction pipe
Supply opening of the supply pipe for supplying oxygen and the supply opening of
A burner is provided in the melting furnace to generate combustion gas by co-firing of the formed oxygen and flammable gas to melt the powdered incineration ash, and a reservoir is provided at the bottom of the melting furnace for storing the molten material melted by the burner. Introduce granular incineration ash into the reservoir
The melting furnace is equipped with an introduction pipe for introducing combustion gas to fill the inside.
The combustion gas introducing part provided continuously to the melting furnace filled with Hamabutsu, said fuel
A melting furnace characterized by having an exhaust port connected to a firing gas inlet .
ス導入部内に導入される燃焼ガスを加熱する加熱手段を
設けたことを特徴とする溶融炉。2. The melting furnace according to claim 1, further comprising heating means for heating the combustion gas introduced into the combustion gas introduction section.
として耐火物を採用したことを特徴とする溶融炉。3. The melting furnace according to claim 1, wherein a refractory is used as the filling.
として可燃物を採用したことを特徴とする溶融炉。4. The melting furnace according to claim 1, wherein a flammable material is used as a filling material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7010421A JP2799550B2 (en) | 1995-01-26 | 1995-01-26 | Melting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7010421A JP2799550B2 (en) | 1995-01-26 | 1995-01-26 | Melting furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08200637A JPH08200637A (en) | 1996-08-06 |
| JP2799550B2 true JP2799550B2 (en) | 1998-09-17 |
Family
ID=11749693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7010421A Expired - Lifetime JP2799550B2 (en) | 1995-01-26 | 1995-01-26 | Melting furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2799550B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101131932B1 (en) * | 2011-06-30 | 2012-04-03 | 서울대학교산학협력단 | Facility and method for manufacturing granular filler using bottom ash of thermal power station |
| CN104819468B (en) * | 2015-04-30 | 2018-05-01 | 湖南屎壳郎环境科技有限公司 | Crop straw burning dead livestock and poultry and rubbish and the normal-pressure boiler and its method for producing hot water |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3806335A (en) * | 1972-12-29 | 1974-04-23 | Union Carbide Corp | Process for preventing solidification in refuse converter taphole |
| JPS5071176A (en) * | 1973-10-27 | 1975-06-12 | ||
| JPS5115583A (en) * | 1974-07-30 | 1976-02-07 | Osamu Hayashi | MINENGASUNEN SHOSOCHI |
| JP2566260B2 (en) * | 1987-11-19 | 1996-12-25 | バブコツク日立株式会社 | Sludge melting incinerator |
| JP2653943B2 (en) * | 1991-08-01 | 1997-09-17 | 日立造船株式会社 | Ash melting method in burner type ash melting furnace |
| JPH0539913A (en) * | 1991-08-02 | 1993-02-19 | Hitachi Zosen Corp | Method of supplying incinerated ash to electric melting furnace |
| JPH05346219A (en) * | 1992-06-15 | 1993-12-27 | Nkk Corp | Device for melting and gasifying waste |
-
1995
- 1995-01-26 JP JP7010421A patent/JP2799550B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08200637A (en) | 1996-08-06 |
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