JPH053868Y2 - - Google Patents
Info
- Publication number
- JPH053868Y2 JPH053868Y2 JP15221887U JP15221887U JPH053868Y2 JP H053868 Y2 JPH053868 Y2 JP H053868Y2 JP 15221887 U JP15221887 U JP 15221887U JP 15221887 U JP15221887 U JP 15221887U JP H053868 Y2 JPH053868 Y2 JP H053868Y2
- Authority
- JP
- Japan
- Prior art keywords
- grate plate
- molten metal
- ash
- grate
- incinerated 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 - Lifetime
Links
- 239000002184 metal Substances 0.000 claims description 41
- 238000002485 combustion reaction Methods 0.000 claims description 31
- 238000002844 melting Methods 0.000 claims description 27
- 230000008018 melting Effects 0.000 claims description 27
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 9
- 230000005484 gravity Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 2
- 239000002893 slag Substances 0.000 description 13
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 230000001012 protector Effects 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 239000002910 solid waste Substances 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Gasification And Melting Of Waste (AREA)
Description
【考案の詳細な説明】
［産業上の利用分野］
本考案は、都市ごみ、産業廃棄物などの固形廃
棄物の焼却残渣（焼却灰）に空気を供給して焼却
灰中の未燃焼炭素を燃焼させ、この燃焼発生熱を
溶融熱源として焼却灰を溶融処理する灰溶融炉、
特にその炉床を形成する火床板の形状に関するも
のである。[Detailed description of the invention] [Industrial application field] This invention supplies air to the incineration residue (incineration ash) of solid waste such as municipal waste and industrial waste to remove unburned carbon in the incineration ash. an ash melting furnace that processes incinerated ash by burning it and using the heat generated by the combustion as a melting heat source;
In particular, it concerns the shape of the grate plate that forms the hearth.
［従来の技術］
従来、この種の灰溶融炉の炉床としては、平板
から成る複数の火床板を焼却灰の移送方向に相隣
る火床板同士の端部を上下に重ねつつ一連に布設
し、以つて、全体として傾斜した階段状の炉床を
形成したものが知られている。この複数の火床板
を階段状に重ねた炉床においては各火床板の重ね
合せ部に間隔が生じるので、この間隔を空気噴射
口として利用して焼却灰中に燃焼用空気を吹き込
めことができる。灰溶融炉はかかる燃焼用空気の
供給を行つて、焼却灰中の未燃焼炭素を燃焼さ
せ、この燃焼発生熱を溶融熱源として焼却灰を溶
融するものである。[Prior Art] Conventionally, as a hearth for this type of ash melting furnace, a plurality of flat grate plates were laid in series with the ends of adjacent grate plates stacked vertically in the direction of transport of the incinerated ash. However, it is known that the hearth has a step-shaped hearth that is slanted as a whole. In a hearth in which a plurality of grate plates are stacked in a stepped manner, there is a gap between the stacked grate plates, so this gap can be used as an air injection port to blow combustion air into the incinerated ash. . The ash melting furnace supplies such combustion air to burn unburned carbon in the incinerated ash, and melts the incinerated ash using the generated heat of combustion as a melting heat source.
［考案が解決しようとする問題点］
しかし、従来の灰溶融炉においては、燃焼用空
気を供給いているものの、溶融スラグ（溶けた灰
＝溶湯）が炉床に沿つて流れるに際し、その溶湯
が平板たる各火床板上に広がつているため、溶湯
が火床板の重ね目で後退り流れとなり、炉床の最
先端に位置する火床板の下端につらら状に固有す
るという問題があつた。このため、炉を安定に操
業することに困難があつた。[Problems that the invention aims to solve] However, in conventional ash melting furnaces, although combustion air is supplied, when the molten slag (molten ash = molten metal) flows along the hearth, the molten metal is Because the molten metal spreads over each flat grate plate, there was a problem in that the molten metal receded and flowed at the overlap of the grate plates, causing it to form in icicles at the lower end of the grate plate located at the tip of the hearth. For this reason, it was difficult to operate the furnace stably.
かかる溶湯の固着を防止する手段としては、油
バーナ等による火災を照射することが考えられる
が、油等の燃料を多量に必要とし、ランニングコ
ストの上昇を招くので不適当である。 As a means to prevent such sticking of the molten metal, irradiation with fire using an oil burner or the like is considered, but this is inappropriate because it requires a large amount of fuel such as oil and causes an increase in running costs.
本考案の目的は、火床板上を流れる溶湯を同一
火床上で集中化させることにより未溶融灰との分
離を良くし、炉床上での溶融スラグの固着化を防
ぎ、安定した操業が可能な灰溶融炉を提供するこ
とにある。 The purpose of this invention is to improve separation of molten metal from unmelted ash by concentrating the molten metal flowing on the grate plate on the same grate, prevent molten slag from sticking on the grate, and enable stable operation. Our objective is to provide an ash melting furnace.
［問題点を解決するための手段］
本考案は、主燃焼炉から排出される焼却灰に空
気を供給して焼却灰中の未燃焼炭素を燃焼させ、
この燃焼発生熱を溶融熱源として焼却灰を溶融処
理する灰溶融炉において、上記焼却灰を溶融しつ
つ排出方向へ移送する炉床を形成する火床板を設
け、該火床板の上面は、これに沿つて移送されな
がら溶融処理される焼却灰から生じる溶湯を１箇
所に集める傾斜案内面と、集めた溶湯を上記移送
方向に流下させる谷部とによりＶ字状に形成する
と共に、火床板の傾斜案内面を流下する溶湯の重
力移動成分を考慮して火床板の先縁を谷部を中心
として斜めに突出させたことを特徴とするもので
ある。[Means for solving the problem] The present invention supplies air to the incinerated ash discharged from the main combustion furnace to burn unburned carbon in the incinerated ash,
In an ash melting furnace that melts incinerated ash using the combustion generated heat as a melting heat source, a grate plate forming a hearth for melting and transferring the incinerated ash in the discharge direction is provided, and the upper surface of the grate plate is attached to this. The slanted guide surface collects the molten metal generated from the incinerated ash that is melted while being transferred along the V-shape, and the trough that allows the collected molten metal to flow down in the above-mentioned transfer direction. The leading edge of the grate plate is made to protrude obliquely from the valley in consideration of the gravitational movement component of the molten metal flowing down the guide surface.
［作用］
火床板は、その上面がＶ字状に形成されている
ため、火床板に沿つて移送されながら溶融処理さ
れる焼却灰から生じた溶湯は、Ｖ字状の傾斜案内
面に沿つて１箇所に集められ、集められた溶湯が
Ｖ字状の谷部に沿つて焼却灰の移送方向に流下す
る。しかも傾斜案内面は、これを流下する溶湯の
重力移動成分を考慮して火床板の先縁を谷部を中
心として斜めに突出させているので、溶融は火床
板の先縁の幅内から湯口部に出たり火床板上に落
ることなく、全て同じ火床板上において谷部に集
められ、谷部に沿つて流下する。このめ未溶融灰
との分離が良くなつて溶湯の流れが良好となり、
火床板上での溶湯の固化が防止される。従つて、
安定で容易な操業が可能となる。[Function] Since the upper surface of the grate plate is formed in a V-shape, the molten metal generated from the incinerated ash that is melted while being transferred along the grate plate flows along the V-shaped inclined guide surface. The molten metal is collected in one place and flows down along the V-shaped valley in the direction in which the incinerated ash is transported. Moreover, the inclined guide surface allows the leading edge of the grate plate to protrude obliquely around the valley in consideration of the gravitational movement component of the molten metal flowing down the guide surface, so that melting is carried out from within the width of the leading edge of the grate plate. They are all collected in a trough on the same grate plate and flow down along the grate, without flowing out or falling onto the grate plate. This improves separation from unmelted ash and improves the flow of the molten metal.
Solidification of molten metal on the grate board is prevented. Therefore,
Stable and easy operation is possible.
［実施例］
以下、本考案の実施例を添付図面に基づいて説
明する。[Example] Hereinafter, an example of the present invention will be described based on the accompanying drawings.
第１図に示すシステムは、都市ごみなどの固形
廃棄物を焼却処理する回転キルン式の主燃焼炉１
と、該主燃焼炉１の端部に連設されており、主燃
焼炉１から排出される未燃焼炭素を含んだ焼却残
渣（焼却灰）８を炉床上に移送させつつ燃焼さ
せ、その熱で焼却灰８を溶湯（溶融スラグ）１０
にする後燃焼灰溶融炉２から構成されている。 The system shown in Figure 1 consists of a rotary kiln type main combustion furnace 1 that incinerates solid waste such as municipal waste.
is connected to the end of the main combustion furnace 1, and burns the incineration residue (incineration ash) 8 containing unburned carbon discharged from the main combustion furnace 1 while transferring it onto the hearth, and releases the heat. Incinerated ash 8 to molten metal (molten slag) 10
It consists of a post-combustion ash melting furnace 2.
灰溶融炉２は耐火断熱材で覆つた炉体３を備え
ており、該炉体内部には下方に傾斜する通路４が
形成されている。炉体３の上部には、主燃焼炉１
からの灰を受け入れる導入口としてのホツパ３ａ
が形成してあり、該ホツパは通路４の上流側上部
４ａと連通している。また、炉体３の下端はスラ
グ排出通路１１と接続され、スラグ冷却水槽へと
続いている。 The ash melting furnace 2 includes a furnace body 3 covered with a refractory heat insulating material, and a downwardly sloping passage 4 is formed inside the furnace body. The main combustion furnace 1 is located on the upper part of the furnace body 3.
Hopper 3a as an inlet to receive ash from
is formed, and the hopper communicates with the upper upstream side 4a of the passage 4. Further, the lower end of the furnace body 3 is connected to a slag discharge passage 11 and continues to a slag cooling water tank.
炉体３の通路４内には、炭化珪素等のセラミツ
クス製の複数個の火床板５が階段状に配設され、
傾斜した火床を形成している。各火床板５には、
棒状の炭化珪素発熱体から成る高温電気ヒータ６
が一体に組込まれている。９は通路４の両側より
送り込んだ高温の燃焼空気を噴出させる空気ノズ
ル（散気管）であり、この空気ノズル９は、相隣
接する火床板５同士の重ね合せ部に生ずる間隔内
に配設してある。 In the passageway 4 of the furnace body 3, a plurality of grate plates 5 made of ceramics such as silicon carbide are arranged in a stepped manner.
It forms a sloping fire bed. On each grate board 5,
High-temperature electric heater 6 made of a rod-shaped silicon carbide heating element
is integrated. Reference numeral 9 denotes an air nozzle (diffuser pipe) that blows out high-temperature combustion air sent in from both sides of the passage 4, and this air nozzle 9 is arranged within the interval that occurs at the overlapping part of the adjacent grate plates 5. There is.
第２図〜第５図において、各火床板５は、火床
板本体５０と、溶湯のまわり込みを阻止するため
の鍔部５１とを有し、鍔部５１と火床板本体５０
とは上面が連続していて火床板５の上面をなして
いる。この火床板５の上面５２は、第３図から良
く分るように、溶湯を集めて流下させるためＶ字
状に形成されている。具体的には、火床板のＶ字
状の上面５２は、これに沿つて移送されながら溶
融処理される焼却灰８から生じる溶湯を１箇所に
集める傾斜案内面５２ａと、集めた溶湯を焼却灰
８の移送方向に流下させる谷部５２ｂとから成
る。このＶ字状の谷部５２ｂは、火床板５の中央
に且つ焼却灰８の送り方向に向つて直線的に走る
ように設けている。また、第２図から分るよう
に、火床板５は、上方から見た場合に矢羽根状を
なすように形成してある。即ち、火床板５の先縁
は側辺から谷部５２ｂにかけて斜めに突出し、火
床板５の後縁は谷部５２ｂを中心として側辺から
斜めに窪んでいる。 In FIGS. 2 to 5, each grate plate 5 has a grate plate main body 50 and a flange portion 51 for preventing molten metal from getting around.
The upper surface is continuous and forms the upper surface of the grate plate 5. As clearly seen in FIG. 3, the upper surface 52 of this grate plate 5 is formed in a V-shape in order to collect the molten metal and allow it to flow down. Specifically, the V-shaped upper surface 52 of the grate plate has an inclined guide surface 52a that collects the molten metal generated from the incinerated ash 8 that is transferred and melted in one place, and a sloped guide surface 52a that collects the molten metal generated from the incinerated ash 8 while being transferred and melts the incinerated ash. 8, and a trough portion 52b for flowing downward in the transfer direction. This V-shaped trough 52b is provided at the center of the grate plate 5 so as to run linearly in the direction in which the incinerated ash 8 is fed. Further, as can be seen from FIG. 2, the grate plate 5 is formed to have a feather-like shape when viewed from above. That is, the leading edge of the grate plate 5 projects obliquely from the side to the valley portion 52b, and the rear edge of the grate plate 5 is diagonally recessed from the side with the valley portion 52b as the center.
この実施例では、各火床板５のＶ字状の傾斜案
内面５２ａの勾配αは約10°、火床板５の先縁及
び後縁の傾斜角（送り角）βは５〜15°としてあ
る。しかし、これらの角度は事情により適切な値
とすることができる。特に、後者の送り角βは、
後述する炉床を形成する際の、火床板５の配置傾
斜角γの値によつて変る性格のものである。ま
た、Ｖ字状の谷部５２ｂは、火床板５の中央に且
つ焼却灰８の送り方向に向つて直線的に走るよう
に設けているが、谷部５２ｂは火床板５の中央か
ら外れた位置にあつてもよく、また多少湾曲して
いてもよい。要するに、火床板５の上面の形状
は、重力による溶湯の移動方向成分を考慮し、溶
湯が各火床板５の先縁全体からは流下しないで谷
部５２ｂに集められ、この谷部５２ｂから流下さ
せることができるようなＶ字状に形成すれば足り
る。 In this embodiment, the slope α of the V-shaped inclined guide surface 52a of each grate plate 5 is approximately 10°, and the inclination angle (feed angle) β of the leading and trailing edges of the grate plate 5 is 5 to 15°. . However, these angles can be set to appropriate values depending on the circumstances. In particular, the latter feed angle β is
The characteristics change depending on the value of the inclination angle γ of the grate plate 5 when forming the hearth, which will be described later. Further, the V-shaped valley portion 52b is provided at the center of the grate plate 5 and runs linearly toward the feeding direction of the incinerated ash 8; It may be in any position or may be slightly curved. In short, the shape of the upper surface of the grate plate 5 takes into consideration the moving direction component of the molten metal due to gravity, and the molten metal does not flow down from the entire leading edge of each grate plate 5, but is collected in the valley portion 52b, and flows down from the valley portion 52b. It suffices to form it in a V-shape that allows for
第６図に示すように、火床板５は、その鍔部５
１を焼却灰８の移送方向下流側にして配置し、上
側の火床板５の鍔部５１を相隣る下側の火床板５
の重ね合せ、以つて階段状の炉床を形成するよう
に配列される。そして、階段状の炉床を形成する
これら火床板５は、その各鍔部５１の上角を結ぶ
包絡線、即ち炉床の上面が一定の傾斜角θとなる
ように配置される。この実施例では、各火床板５
の個々の傾斜角γについてはそれぞれ約5°、各鍔
部５１の上角を結ぶ炉床全体の傾斜角θとしては
約20°となるように、各火床板５を配置している。
しかし、火床板５のこれらの傾斜角や傾斜案内面
５２ａの勾配は、事情に応じて適当な角度に変更
することができる。 As shown in FIG. 6, the grate plate 5 has a flange 5
1 is placed on the downstream side in the direction of transfer of the incinerated ash 8, and the flange 51 of the upper grate plate 5 is placed on the downstream side in the direction of transfer of the incinerated ash 8.
are arranged so as to form a stepped hearth. These grate plates 5 forming a stepped hearth are arranged so that an envelope connecting the upper corners of each of the flanges 51, that is, the upper surface of the hearth, forms a constant inclination angle θ. In this embodiment, each grate plate 5
The grate plates 5 are arranged so that the individual inclination angles γ are about 5°, and the inclination angle θ of the entire hearth connecting the upper corners of the flanges 51 is about 20°.
However, these angles of inclination of the grate plate 5 and the slope of the inclined guide surface 52a can be changed to appropriate angles depending on the circumstances.
一方、第４図及び第５図に示すように、各火床
板５には、その火床板本体５０の下部に、絶縁材
料から成るヒータ保護体５３が一体に設けてあ
り、このヒータ保護体５３には電気ヒータ６の挿
入穴５４が穿設されている。このヒータ保護体５
３及びこれに穿設する挿入穴５４も、上記重力に
よる溶湯の移動成分による移動位置ずれを考慮
し、上方から見たとき、第８図に示すように、火
床板５の先縁及び後縁の送り角βだけ傾斜させて
設ける。電気ヒータ６は、第８図及び第９図に示
すように、このヒータ保護体５３の挿入穴５４に
両側から収められ、火床板５と一体化される。即
ち、電気ヒータ６は火床板５と一体化される結
果、溶湯の流入から保護されると共に、効率よく
火床板５を加熱する。尚、５５は火床板本体５０
に設けた熱電対用の穴を示す。 On the other hand, as shown in FIGS. 4 and 5, each grate plate 5 is integrally provided with a heater protector 53 made of an insulating material at the lower part of the grate plate main body 50. An insertion hole 54 for the electric heater 6 is bored in the hole 54 . This heater protector 5
3 and the insertion hole 54 drilled therein also take into consideration the movement position shift caused by the moving component of the molten metal due to gravity, and when viewed from above, the leading edge and the trailing edge of the grate plate 5 are as shown in FIG. It is provided so as to be inclined by the feed angle β. As shown in FIGS. 8 and 9, the electric heater 6 is inserted into the insertion hole 54 of the heater protector 53 from both sides and is integrated with the grate plate 5. That is, as a result of being integrated with the grate plate 5, the electric heater 6 is protected from the inflow of molten metal and efficiently heats the grate plate 5. In addition, 55 is the grate board main body 50
The hole for the thermocouple is shown.
さて、都市ごみなどの固形廃棄物７は、投入口
から主燃焼炉１に供給され、そこで助燃バーナで
着火され、以後燃焼空気によつて自然し、その焼
却灰８は、ホツパー部３ａから灰溶融炉２に導入
される。その際、焼却灰８中には未燃炭素が残留
するが、特にその量が７〜25重量％好ましくは10
〜20重量％の範囲に残留するように、主燃焼炉１
内での燃焼を制御される。具体的には、ごみの投
入量、燃焼用空気量及びストーカ式炉ではストー
カの送り速度、回転キルン式炉では、回転速度な
どを調節することで残存させる。 Now, solid waste 7 such as municipal waste is supplied from the input port to the main combustion furnace 1, where it is ignited by an auxiliary combustion burner and then oxidized by combustion air. It is introduced into the melting furnace 2. At that time, unburned carbon remains in the incineration ash 8, but the amount is preferably 7 to 25% by weight, preferably 10% by weight.
Main combustion furnace 1 so that it remains in the range of ~20% by weight
The combustion within is controlled. Specifically, it is made to remain by adjusting the input amount of waste, the amount of combustion air, the stoker feed rate in a stoker type furnace, the rotation speed in a rotary kiln type furnace, etc.
未燃炭素を含んだ焼却灰８は、ホツパー部３ａ
を通つて溶融炉２内の火床板５に積層し、空気ノ
ズル９から吹き出す高温の燃焼空気によつて未燃
炭素が燃焼し、その時発生する熱によつて加熱さ
れ、溶融スラグ即ち溶湯１０となる。この溶湯１
０は、Ｖ字状の各火床板５の傾斜案内面５２ａ上
を谷部５２ｂに向つて集められ、谷部５２ｂに沿
う一条の流れとなつて湯口部（火床板５の最先端
部）５ｄへ流れる。この間の焼却灰８の燃焼、溶
融の促進のため、火床板５の温度は、900℃の予
熱帯、1100℃の燃焼帯、1300℃の溶融帯、1350℃
の湯口部５ｄの如く、数区画に分けて制御され
る。また燃焼用空気も、予熱帯で20％、燃焼帯で
60％、溶融帯で20％の如く制御され、焼却灰８の
燃焼・溶融が効率的に行われる。 The incineration ash 8 containing unburned carbon is transferred to the hopper section 3a.
The unburned carbon is layered on the grate plate 5 in the melting furnace 2 through the air nozzle 9, and the unburned carbon is burned by the high-temperature combustion air blown out from the air nozzle 9, heated by the heat generated at that time, and becomes molten slag or molten metal 10. Become. This molten metal 1
0 is collected on the inclined guide surface 52a of each V-shaped grate board 5 toward the trough 52b, becomes a single stream along the trough 52b, and flows to the sprue part (the most extreme part of the grate board 5) 5d. flows to During this period, in order to promote combustion and melting of the incinerated ash 8, the temperatures of the grate plate 5 are as follows: 900°C in the preheating zone, 1100°C in the combustion zone, 1300°C in the melting zone, and 1350°C.
It is controlled in several sections, such as the sprue section 5d. In addition, 20% of the combustion air is used in the preheating zone and 20% in the combustion zone.
The amount is controlled to 60% and 20% in the melting zone, and the combustion and melting of the incinerated ash 8 is performed efficiently.
溶湯は、火床板５の傾斜案内面５２ａに沿つて
Ｖ字状の谷部５２ｂに集められる。その際、傾斜
案内面５２ａは、重力による溶湯の移動位置ずれ
を考慮して送り角βだけ谷部５２ｂ側が突出して
いるので、溶融は火床板５の先縁の幅内から次の
火床板５上に落ることなく、全て同じ火床板５上
において谷部５２ｂに集められ、谷部５２ｂに沿
つて流下する。このため、平らな火床板の場合の
ように、溶融が火床板５の先縁の幅内でつらら状
に固化することなく、溶湯は火床板５上を良好に
流下する。こうして火床板５上を流れて湯口５ｄ
から出た溶湯（溶融スラグ）１０は、スラグ排出
通路１１を経てスラグ冷却水槽（図示せず）に落
ち、そこで冷却固化される。 The molten metal is collected in a V-shaped valley 52b along the inclined guide surface 52a of the grate plate 5. At this time, the trough portion 52b of the inclined guide surface 52a protrudes by the feed angle β in consideration of displacement of the molten metal due to gravity. They are all collected in the trough 52b on the same grate plate 5 without falling upward, and flow down along the trough 52b. Therefore, unlike in the case of a flat grate plate, the molten metal does not solidify into an icicle shape within the width of the leading edge of the grate plate 5, and the molten metal flows smoothly down on the grate plate 5. In this way, it flows over the grate plate 5 and the sprue 5d
The molten metal (molten slag) 10 discharged from the slag falls into a slag cooling water tank (not shown) through a slag discharge passage 11, where it is cooled and solidified.
一方、燃焼排ガスは溶融スラグ１０が流れるの
と同方向にブロワー（図示せず）により吸引さ
れ、火床板５の湯口部５ｄの冷却を防止しつつ煙
道１６より排出される。 On the other hand, the combustion exhaust gas is sucked by a blower (not shown) in the same direction as the molten slag 10 flows, and is discharged from the flue 16 while preventing the sprue portion 5d of the grate plate 5 from being cooled.
大プツシヤー１２及び小プツシヤー１３は連係
動作により焼却灰８の攪拌・移送を行い、以つて
焼却灰８の燃焼・溶融制御に寄与すると共に、焼
却灰８の架橋防止、溶融不適物の強制排出を行う
ものである。コントローラ１５は、大プツシヤー
１２の送り出しに際し、大プツシヤー１２に所属
するエンコーダ１３から発生される単位時間当り
の出力パルス数（送り出し速度）が所定値を下ま
わるかどうかを監視し、所定値を下まわる場合に
は、スラグ固着の徴候があると判断する。また、
エンコーダ１３から発生される単位時間当りの出
力パルス数がゼロ、即ち大プツシヤー１２が停止
した場合には、大プツシヤー１２が原位置から停
止するまでの間にエンコーダ１３から発生された
出力パルス数の積算値を、予め定めた設定値と比
較し、積算値がまだ設定値に達していなければ、
クリンカの発生が原因して停止したと判断する。
そして、コントローラ１５は、このようなクリン
カを検出したときは、クリンカ発生部分の電気ヒ
ータ６の通電を強めると共に、大プツシヤー１
２、小プツシヤー１３のコンビネーシヨン動作に
より、固着スラグの剥離、排出を行う。 The large pusher 12 and the small pusher 13 agitate and transfer the incinerated ash 8 through a coordinated operation, thereby contributing to the control of combustion and melting of the incinerated ash 8, as well as preventing bridging of the incinerated ash 8 and forcibly discharging molten unsuitable materials. It is something to do. When sending out the large pusher 12, the controller 15 monitors whether the number of output pulses per unit time (feeding speed) generated from the encoder 13 belonging to the large pusher 12 falls below a predetermined value. If it rotates, it is determined that there is a sign of slag fixation. Also,
When the number of output pulses generated from the encoder 13 per unit time is zero, that is, when the large pusher 12 stops, the number of output pulses generated from the encoder 13 until the large pusher 12 stops from its original position is Compare the integrated value with a predetermined set value, and if the integrated value has not yet reached the set value,
It is determined that the stoppage was caused by clinker generation.
When such a clinker is detected, the controller 15 strengthens the energization of the electric heater 6 in the part where the clinker is generated, and also turns on the large pusher 1.
2. The combination operation of the small pusher 13 peels off and discharges the stuck slag.
［考案の効果］
以上のように、本考案の灰溶融炉では、火床板
に沿つて移送されながら溶融処理される焼却灰か
ら生じた溶湯は、Ｖ字状の傾斜案内面に沿つて１
箇所に集められ、集められた溶湯がＶ字状の谷部
に沿つて焼却灰の移送方向に流下する。このため
未溶融灰との分離が良くなつて溶湯の流れが良好
となり、火床板上での溶湯の固化が防止される。[Effects of the invention] As described above, in the ash melting furnace of the invention, the molten metal generated from the incinerated ash that is melted while being transferred along the grate plate is 1/1 along the V-shaped inclined guide surface.
The collected molten metal flows down along the V-shaped valley in the direction in which the incinerated ash is transported. Therefore, separation from unmelted ash is improved, the flow of the molten metal is improved, and solidification of the molten metal on the grate plate is prevented.
また、傾斜案内面は、これを流下する溶湯の重
力移動成分を考慮して、火床板の先縁を谷部を中
心として斜めに突出させているので、溶融は火床
板の先縁の幅内から湯口部に出たり火床板上に落
ることなく、全て同じ火床板上において谷部に集
められる。即ち、溶湯は、平らな火床板や単にＶ
字状とした火床板の場合のように、火床板５の重
ね目で後退り流れとなることがない。従つて、火
床板の重ね目に溶湯が漏れ込むことがないので、
火床板を加熱する電気ヒータの保護が容易にとな
る。また溶融が火床板５の先縁につらら状に固化
することもないので、安定で容易な操業が可能と
なる。 In addition, considering the gravitational movement component of the molten metal flowing down the inclined guide surface, the leading edge of the grate plate is made to protrude obliquely around the valley, so that the melting occurs within the width of the leading edge of the grate plate. They are all collected in the valley on the same grate plate, without coming out to the sprue or falling onto the grate plate. That is, the molten metal is placed on a flat grate plate or simply on a V
Unlike in the case of a letter-shaped grate board, there is no receding flow at the overlap of the grate boards 5. Therefore, molten metal will not leak into the overlapped seams of the grate board, so
It becomes easy to protect the electric heater that heats the grate board. Furthermore, since the melt does not solidify in the form of icicles on the leading edge of the grate plate 5, stable and easy operation is possible.
第１図は主燃焼炉に連設された本考案の灰溶融
炉の実施例を示す断面図、第２図はその火床板の
上面図、第３図は火床板の正面図、第４図は火床
板の側面図、第５図は第３図のＶ−Ｖ線に沿つた
切断端面図、第６図は火床板を連ねて形成した炉
床の側面図、第７図は火床板の重ね合せ状態を示
す斜視図、第８図は電気ヒータを取付けた状態を
示す火床板の上面図、第９図はその正面図であ
る。
図中、１は主燃焼炉、２は灰溶融炉、３は炉
体、５は火床板、６は電気ヒータ、８は焼却灰、
９は空気ノズル、１０は溶湯、１２は大プツシヤ
ー、１３は小プツシヤー、５０は火床板本体、５
１は鍔部、５２は火床板の上面、５２ａは傾斜案
内面、５２ｂは谷部、５３はヒータ保護体、５４
は挿入穴を示す。
Fig. 1 is a sectional view showing an embodiment of the ash melting furnace of the present invention connected to the main combustion furnace, Fig. 2 is a top view of the grate plate, Fig. 3 is a front view of the grate plate, and Fig. 4 is a side view of the grate plate, Fig. 5 is a cut end view taken along line V-V in Fig. 3, Fig. 6 is a side view of the hearth formed by connecting grate plates, and Fig. 7 is a side view of the grate plate. FIG. 8 is a top view of the grate plate with an electric heater attached thereto, and FIG. 9 is a front view thereof. In the figure, 1 is the main combustion furnace, 2 is the ash melting furnace, 3 is the furnace body, 5 is the grate plate, 6 is the electric heater, 8 is the incinerated ash,
9 is an air nozzle, 10 is a molten metal, 12 is a large pusher, 13 is a small pusher, 50 is a grate board body, 5
1 is the flange, 52 is the upper surface of the grate board, 52a is the inclined guide surface, 52b is the valley, 53 is the heater protector, 54
indicates the insertion hole.
Claims (1)
て焼却灰中の未燃焼炭素を燃焼させ、この燃焼発
生熱を溶融熱源として焼却灰を溶融処理する灰溶
融炉において、上記焼却灰を溶融しつつ排出方向
へ移送する炉床を形成する火床板を設け、該火床
板の上面は、これに沿つて移送されながら溶融処
理される焼却灰から生じる溶湯を１箇所に集める
傾斜案内面と、集めた溶湯を上記移送方向に流下
させる谷部とによりＶ字状に形成すると共に、火
床板の傾斜案内面を流下する溶湯の重力移動成分
を考慮して火床板の先縁を谷部を中心として斜め
に突出させたことを特徴とする灰溶融炉。 The incinerated ash is melted in the ash melting furnace, which supplies air to the incinerated ash discharged from the main combustion furnace to burn the unburned carbon in the incinerated ash, and uses the generated heat of combustion as a melting heat source to melt and process the incinerated ash. a grate plate forming a hearth for transporting in the discharge direction while the grate plate is being transported; The collected molten metal is formed into a V-shape by the troughs that flow down in the transfer direction, and the leading edge of the grate plate is centered around the troughs in consideration of the gravity movement component of the molten metal flowing down the inclined guide surface of the grate plate. An ash melting furnace characterized by a diagonal protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15221887U JPH053868Y2 (en) | 1987-10-06 | 1987-10-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15221887U JPH053868Y2 (en) | 1987-10-06 | 1987-10-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0161531U JPH0161531U (en) | 1989-04-19 |
| JPH053868Y2 true JPH053868Y2 (en) | 1993-01-29 |
Family
ID=31426950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15221887U Expired - Lifetime JPH053868Y2 (en) | 1987-10-06 | 1987-10-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH053868Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2598446Y2 (en) * | 1993-06-03 | 1999-08-09 | 品川白煉瓦株式会社 | Outlet weir brick in ash melting furnace |
-
1987
- 1987-10-06 JP JP15221887U patent/JPH053868Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0161531U (en) | 1989-04-19 |
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