JPS6223206B2 - - Google Patents
Info
- Publication number
- JPS6223206B2 JPS6223206B2 JP58206689A JP20668983A JPS6223206B2 JP S6223206 B2 JPS6223206 B2 JP S6223206B2 JP 58206689 A JP58206689 A JP 58206689A JP 20668983 A JP20668983 A JP 20668983A JP S6223206 B2 JPS6223206 B2 JP S6223206B2
- Authority
- JP
- Japan
- Prior art keywords
- melting
- incineration ash
- ash
- furnace
- solidified
- 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
Links
- 238000002844 melting Methods 0.000 claims description 16
- 230000008018 melting Effects 0.000 claims description 16
- 239000011230 binding agent Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 8
- 239000000571 coke Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 5
- 239000003245 coal Substances 0.000 claims description 4
- 239000004927 clay Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000004898 kneading Methods 0.000 claims description 3
- 239000002699 waste material Substances 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 description 7
- 239000000155 melt Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 235000013379 molasses Nutrition 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 238000004056 waste incineration Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000010169 landfilling Methods 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/085—High-temperature heating means, e.g. plasma, for partly melting the waste
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/30—Solid combustion residues, e.g. bottom or flyash
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gasification And Melting Of Waste (AREA)
- Processing Of Solid Wastes (AREA)
Description
（産業上の利用分野）
本発明は、都市ゴミ、石炭等の固体可燃物の焼
却灰を加熱溶融する方法に関するものである。
（従来の技術と問題点）
焼却灰の発生は、年々増加し、国土の狭い我国
では、その処分に苦慮するようになつてきてい
る。焼却灰は重金属を含有し、雨水等によりその
重金属を溶出し、また容積が大きく処分地として
も広い面積を必要とする。そこで、近年、この焼
却灰を重油は加熱溶融し、しかる後、冷却固化
し、前記した問題を解決しようとする試みがなさ
れてきた。かかる方式では、灰を火炎によつて加
熱するものであるから、安定した溶融を維持でき
ないことや、燃焼廃ガスによる灰の同伴の問題が
あり、これらを解決するために種々の工夫がなさ
れているが未だ満足できるものは提供されていな
い。
（問題を解決するための構成、作用）
本発明は、焼却灰を無機系の結合剤である大き
さの範囲に固化した後、同じく固体のコークスと
共にキユポラ炉に導入する方法であり、この方法
より、固化した焼却灰が溶融する以前に崩壊し、
且つ粉化することなく、予熱と溶融を安定して進
行させることができる。即ち本発明は、都市ゴ
ミ、石炭等の固体可燃物の焼却により発生する焼
却灰が溶融する以前に崩壊し、且つ粉化すること
を防止するために、前記焼却灰の全重量に対し10
重量％以下の無機系の結合剤と共に混練して、５
〜100mmの大きさに固形化し、これをコークスと
共に前記燃焼炉に供給して加熱溶融し、しかる
後、水砕固化することを、その要旨とするもので
ある。前記キユポラ炉とは、図で模式的に示すよ
うに、円筒竪型の形状で、燃焼用空気の供給口を
側方に備え、予熱帯及び溶融帯を有し、且つ溶融
物を上部から排出するという基本構成から成るも
のをいう。前記焼却灰を固形化するための結合剤
として、無機系では粘土やセメント或は水ガラス
があり、有機系ではピツチやタール、更には糖
蜜、バルブ排液等がある。前記水ガラスは、ナト
リウムを多く含有し、そのため溶融炉の煉瓦の損
傷を助長することになり好ましくない。また、タ
ールやピツチは高温での粘結性に問題があるこ
と、燃焼廃ガスを汚染するというデメリツトがあ
る。このように、結合剤としては、ナトリウム含
有量の出来るだけ少い無機系のものが好ましい。
固形化灰の融点を下げるという観点からは、カル
シウムや鉄を多く含むものが有利である。５〜
100mmの大きさに固形化する方法としては、水と
共に混練した後、ダブルローラで圧縮し、風乾す
ること等によつて行なうことができる。結合剤の
添加量については、灰の無機成分の含有量や未燃
炭素分によつて異なるが、固形化灰の強度並びに
費用を、考慮して決める。例えば、焼却灰の全重
量に対し10以下（重量比）が好ましい。固形化物
の大きさに関しても、炉の大きさや、固形化に要
する費用を考慮して決定するが、５〜100mmの範
囲が最適である。
実施例
表に示す組成の都市ゴミ焼却灰100に対し、同
表に示す組成のポルトランドセメント５（重量
比）を加え、更に水を加えて混練した。これをダ
ブルローラを用いて固形化した後、２昼夜風乾し
て、10〜50mmの大きさの固形物物を得た。
この固形化した焼却灰をコークスと共にキユポ
ラ炉に導入した。キユポラ炉には予熱した空気が
供給部３から供給され、下部に於いてコークスが
燃焼し、灰の溶融帯５を形成する。固形化した焼
却灰は粉化することなく、予熱帯４を経て溶融帯
５に到達し、そこで溶融した。溶融した灰は炉底
の出口６から抜き出し水砕固化した。
実施例
実施例の結合剤、ポルトランドセメントに代
えて、蛙目粘土を焼却灰100に対し７（重量比）
を加えた。固形化した焼却灰は粉化することなく
溶融帯５に達し溶融された。
実施例
表に示す都市ゴミ焼却灰100に対し、結合剤と
して、糖蜜を10（重量比）を加えた。この固形化
した焼却灰をコークスと共にキユポラ炉に導入し
た。しかし、この固形化物は、溶融帯５に到達前
に、大半が崩壊し粉化した。このため、焼却灰は
ほとんど溶融することができず、燃焼排ガスに同
伴して炉の系外に排出された。
(Industrial Application Field) The present invention relates to a method of heating and melting incineration ash of solid combustible materials such as municipal waste and coal. (Conventional technology and problems) The generation of incineration ash is increasing year by year, and in Japan, which has a small land area, it is becoming difficult to dispose of it. Incineration ash contains heavy metals, which are eluted by rainwater, etc., and is large in volume, requiring a large area for disposal. Therefore, in recent years, attempts have been made to solve the above-mentioned problems by heating and melting this incineration ash with heavy oil, and then cooling and solidifying it. In this method, since the ash is heated by flame, there are problems such as the inability to maintain stable melting and the entrainment of ash by combustion waste gas, and various efforts have been made to solve these problems. However, nothing satisfactory has been provided yet. (Structure and operation for solving the problem) The present invention is a method in which incineration ash is solidified into a certain size range using an inorganic binder and then introduced into a cupora furnace together with solid coke. As a result, the solidified incineration ash collapses before it melts,
Moreover, preheating and melting can proceed stably without powdering. That is, in order to prevent the incineration ash generated by the incineration of solid combustible materials such as municipal waste and coal from collapsing and turning into powder before it melts, the present invention provides a method for preventing the incineration ash generated by incineration of solid combustible materials such as municipal garbage and coal from disintegrating and turning into powder.
By kneading with an inorganic binder of 5% by weight or less,
The gist is to solidify it to a size of ~100 mm, supply it to the combustion furnace together with coke, heat and melt it, and then pulverize and solidify it. As schematically shown in the figure, the cupola furnace has a cylindrical vertical shape, is equipped with a combustion air supply port on the side, has a preheating zone and a melting zone, and discharges the molten material from the top. It consists of the basic structure of Inorganic binders for solidifying the incineration ash include clay, cement, and water glass, and organic binders include pitch, tar, molasses, and valve drainage. The water glass is undesirable because it contains a large amount of sodium and therefore promotes damage to the bricks of the melting furnace. Additionally, tar and pitch have the disadvantage of having problems with caking at high temperatures and contaminating combustion waste gas. Thus, the binder is preferably an inorganic binder with as little sodium content as possible.
From the viewpoint of lowering the melting point of solidified ash, it is advantageous to use one containing a large amount of calcium and iron. 5～
A method for solidifying the material to a size of 100 mm can be by kneading it with water, compressing it with double rollers, and air-drying it. The amount of binder added varies depending on the inorganic component content and unburned carbon content of the ash, but is determined by taking into consideration the strength and cost of the solidified ash. For example, it is preferably 10 or less (weight ratio) to the total weight of incinerated ash. The size of the solidified material is also determined in consideration of the size of the furnace and the cost required for solidification, but a range of 5 to 100 mm is optimal. Example To 100 pieces of municipal waste incineration ash having the composition shown in the table, 5 parts of Portland cement (weight ratio) having the composition shown in the table were added, and water was further added and kneaded. This was solidified using a double roller and air-dried for two days and nights to obtain a solid material with a size of 10 to 50 mm. This solidified incineration ash was introduced into a cupola furnace together with coke. Preheated air is supplied to the cupola furnace from a supply section 3, and coke is burned in the lower part to form a molten zone 5 of ash. The solidified incineration ash reached the melting zone 5 through the preheating zone 4 without being pulverized, and was melted there. The molten ash was extracted from the outlet 6 at the bottom of the furnace and pulverized and solidified. Example Instead of the binder of the example, Portland cement, Frog's eye clay was added to 100% of incinerated ash (weight ratio).
added. The solidified incineration ash reached the melting zone 5 and was melted without being pulverized. Example To 100 parts of municipal waste incineration ash shown in the table, 10 parts (by weight) of molasses was added as a binder. This solidified incineration ash was introduced into a cupora furnace together with coke. However, most of this solidified material collapsed and became powder before reaching the melting zone 5. For this reason, the incinerated ash could hardly be melted and was discharged out of the furnace system along with the combustion exhaust gas.
【表】
（発明の効果）
本発明は、以上の通り、焼却灰の全重量に対
し、10重量％以下、無機系の結合剤で５〜100mm
の大きさに固形化し、これを同じく固形のコーク
スと共にキユポラ内に導入するようにしたので、
炉内の高い空隙率が確保でき、この結果、多量の
燃焼用空気を炉内に送ることができて、高負荷燃
焼を達成することができる。そして、前記固形化
物は溶融前に崩壊粉化することなく、炉内に於い
て、予熱、溶融が効果的に行なわれる優れた特徴
がある。従つて、公害等の問題を惹起することは
ない。なお、溶融物は、水砕等により、固化した
後、埋立用等種々の用途に供される。[Table] (Effects of the Invention) As described above, the present invention provides the use of an inorganic binder of 10% by weight or less based on the total weight of incinerated ash, and 5 to 100 mm of incinerated ash.
This was then introduced into the cupola together with the solid coke.
A high porosity inside the furnace can be ensured, and as a result, a large amount of combustion air can be sent into the furnace, making it possible to achieve high-load combustion. The solidified material has the excellent feature that it does not disintegrate into powder before melting, and can be effectively preheated and melted in the furnace. Therefore, it does not cause problems such as pollution. In addition, after the melt is solidified by water pulverization or the like, it is used for various purposes such as landfilling.
図は竪型炉の概念的説明図である。
符号１……ホツパー、２……ダンパ、３……予
熱空気供給口、４……予熱帯、５……溶融帯、６
……溶融物出口、７……湯溜帯。
The figure is a conceptual explanatory diagram of a vertical furnace. Code 1... Hopper, 2... Damper, 3... Preheating air supply port, 4... Preheating zone, 5... Melting zone, 6
...Melt outlet, 7...Sump zone.
Claims (1)
発生する焼却灰が溶融する以前に崩壊し、且つ粉
化することを防止するために、前記焼却灰の全重
量に対し、10重量％以下の無機系の結合剤と共に
混練して５〜100mmの大きさに固形化し、これを
固形コークスと共にキユポラ炉に導入して加熱溶
融することを特徴とする焼却灰の溶融処理方法。 ２ 無機系結合剤として、セメント、粘土を使用
した特許請求の範囲第１項記載の焼却灰の溶融処
理方法。[Claims] 1. In order to prevent the incineration ash generated by incineration of solid combustible materials such as municipal waste and coal from collapsing and turning into powder before melting, the total weight of the incineration ash is , a method for melting incineration ash characterized by kneading it with an inorganic binder of 10% by weight or less to solidify it to a size of 5 to 100 mm, introducing it together with solid coke into a Cupora furnace, and heating and melting it. . 2. The method for melting incineration ash according to claim 1, which uses cement or clay as the inorganic binder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58206689A JPS6099921A (en) | 1983-11-02 | 1983-11-02 | Process for melting and treating burned ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58206689A JPS6099921A (en) | 1983-11-02 | 1983-11-02 | Process for melting and treating burned ash |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6099921A JPS6099921A (en) | 1985-06-03 |
| JPS6223206B2 true JPS6223206B2 (en) | 1987-05-21 |
Family
ID=16527480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58206689A Granted JPS6099921A (en) | 1983-11-02 | 1983-11-02 | Process for melting and treating burned ash |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6099921A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0714679A1 (en) * | 1994-12-03 | 1996-06-05 | Metallgesellschaft Ag | Process for the elimination of the residues of the waste incinerators like active carbon and/or active coal |
| EP0823266A1 (en) * | 1994-05-26 | 1998-02-11 | Metallgesellschaft Aktiengesellschaft | Process and device for the disposal of carbonised coke and/or pyrolysis dust |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2578436B2 (en) * | 1987-08-27 | 1997-02-05 | 東京瓦斯株式会社 | Melting method of incinerated ash |
| JP3170266B2 (en) * | 1989-06-27 | 2001-05-28 | 大阪瓦斯株式会社 | Melt treatment of municipal waste incineration residue |
| CN103939920A (en) * | 2014-04-29 | 2014-07-23 | 河南中易环保科技有限公司 | Fly ash processing method and system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5475474A (en) * | 1977-11-28 | 1979-06-16 | Mitsubishi Mining & Cement Co | Method of solidifying and treating urban garbage incinerator ep ashes |
| JPS5860113A (en) * | 1981-10-05 | 1983-04-09 | Kubota Ltd | Melting method for refuse |
-
1983
- 1983-11-02 JP JP58206689A patent/JPS6099921A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5475474A (en) * | 1977-11-28 | 1979-06-16 | Mitsubishi Mining & Cement Co | Method of solidifying and treating urban garbage incinerator ep ashes |
| JPS5860113A (en) * | 1981-10-05 | 1983-04-09 | Kubota Ltd | Melting method for refuse |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0823266A1 (en) * | 1994-05-26 | 1998-02-11 | Metallgesellschaft Aktiengesellschaft | Process and device for the disposal of carbonised coke and/or pyrolysis dust |
| EP0714679A1 (en) * | 1994-12-03 | 1996-06-05 | Metallgesellschaft Ag | Process for the elimination of the residues of the waste incinerators like active carbon and/or active coal |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6099921A (en) | 1985-06-03 |
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