JPS6242204B2 - - Google Patents
Info
- Publication number
- JPS6242204B2 JPS6242204B2 JP54127495A JP12749579A JPS6242204B2 JP S6242204 B2 JPS6242204 B2 JP S6242204B2 JP 54127495 A JP54127495 A JP 54127495A JP 12749579 A JP12749579 A JP 12749579A JP S6242204 B2 JPS6242204 B2 JP S6242204B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- furnace
- industrial waste
- carbon
- fluidized bed
- 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
- 239000002440 industrial waste Substances 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 2
- 239000000571 coke Substances 0.000 description 10
- 239000007789 gas Substances 0.000 description 9
- 238000002485 combustion reaction Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000004927 wastewater treatment sludge Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
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)
- Coke Industry (AREA)
Description
【発明の詳細な説明】
本発明は、炉内に炭素系可燃物質の高温固定炉
床を形成し、その高温固定炉床の上方に産業廃棄
物及び粉粒状炭素系可燃物質を供給する産業廃棄
物の溶融処理方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention provides an industrial waste treatment system that forms a high-temperature fixed hearth of carbon-based combustible material in a furnace and supplies industrial waste and granular carbon-based combustible material above the high-temperature fixed hearth. It relates to a method for melting and processing objects.
上記方法は、例えば下水処理汚泥等の各種産業
廃棄物を、重金属が流出しないように、あるい
は、建設骨材等に再利用できるように、溶融処理
するに、エネルギー面でも炉構成面でも経済的に
実施できるように開発されたものであるが、本発
明は、さらに上記方法に改良を加えて、ダスト飛
散に伴う二次公害の防止、炉壁熱損の抑制、及
び、処理能力の向上等において一層有利な方法を
得る事を目的とする。 The above method is economical in terms of energy and furnace configuration for melting various industrial wastes such as sewage treatment sludge to prevent heavy metals from flowing out or to reuse them as construction aggregates. However, the present invention further improves the above method to prevent secondary pollution caused by dust scattering, suppress furnace wall heat loss, and improve processing capacity. The purpose is to obtain a more advantageous method.
次に、例示図により本発明の実施態様を説明す
る。 Next, embodiments of the present invention will be described with reference to illustrative figures.
先ず、使用するキュポラタイプの炉の構成につ
いて説明する。 First, the configuration of the cupola type furnace used will be explained.
第１図に示すように、堅型炉１の上部に廃棄物
供給用ホツパー２ａ及びコークス供給用ホツパー
２ｂを設け、流体圧シリンダにより開閉されるゲ
ート３ａ，３ｂ及びベル４ａ，４ｂを両ホツパー
２ａ，２ｂに付設し、堅型炉１の下部に炉床点火
用バーナ５及び溶融物排出部６を設け、設定可変
型分配弁７を介してブロワー８に並列接続した上
部給気路９ａ及び下部給気路９ｂを堅型炉１に接
続し、サイクロン１０に接続された排気路１１
ａ，１１ｂを堅型炉１の上部及び溶融物排出部６
に接続し、ブロワー８からの燃焼用酸素含有ガス
に対する予熱器１２にサイクロン１０を接続しあ
る。 As shown in FIG. 1, a waste supply hopper 2a and a coke supply hopper 2b are provided in the upper part of the vertical furnace 1, and gates 3a, 3b and bells 4a, 4b, which are opened and closed by hydraulic cylinders, are connected to both hoppers 2a and 2b. , 2b, a hearth ignition burner 5 and a melt discharge part 6 are provided in the lower part of the vertical furnace 1, and an upper air supply passage 9a and a lower part are connected in parallel to a blower 8 via a variable setting distribution valve 7. The air supply path 9b is connected to the vertical furnace 1, and the exhaust path 11 is connected to the cyclone 10.
a, 11b are the upper part of the vertical furnace 1 and the melt discharge part 6
The cyclone 10 is connected to a preheater 12 for the combustion oxygen-containing gas from the blower 8.
上記炉を運転するに、ホツパー２ｂから適量の
コークスを供給すると共に、両給気路９ａ，９ｂ
から適量のガスを供給し、かつ、バーナ５でコー
クスに点火して、下部にコークスの高温固定炉床
１３をかつその上方にコークスの高温流動床１４
を形成させ、炉内温度が所定温度に上昇すれば、
ホツパー２ａ，２ｂから産業廃棄物及びコークス
を連続的あるいは間歇的に適量供給して、コーク
スの高温固定炉床１３とコークス及び産業廃棄物
の高温流動床１４を継続形成させる。 To operate the above-mentioned furnace, an appropriate amount of coke is supplied from the hopper 2b, and both supply air passages 9a, 9b are
An appropriate amount of gas is supplied from the burner 5, and coke is ignited to form a high-temperature fixed hearth 13 of coke at the bottom and a high-temperature fluidized bed 14 of coke above it.
is formed, and if the temperature inside the furnace rises to a predetermined temperature,
Appropriate amounts of industrial waste and coke are continuously or intermittently supplied from the hoppers 2a and 2b to continuously form a high-temperature fixed hearth 13 of coke and a high-temperature fluidized bed 14 of coke and industrial waste.
そして、溶融処理物を取出口１５から取出し、
また、排気路１１ａ，１１ｂからの燃焼排ガス
を、サイクロン１０で除塵処理した後予熱器１２
で熱回収して大気中に放出する。 Then, take out the melted product from the port 15,
Further, after the combustion exhaust gas from the exhaust passages 11a and 11b is subjected to dust removal treatment using a cyclone 10, a preheater 12
The heat is recovered and released into the atmosphere.
上述のように、高温流動床１４を高温固定炉床
１３の上方に形成すると、産業廃棄物や灰が包み
込まれると共に炭素にスラグが付着して、排ガス
へのダスト混入を効果的に抑制できる。そして単
に高温固定炉床１３を形成させる場合、その上方
に位置する未燃炭素が燃焼排ガス中の炭酸ガスと
吸熱反応して排ガス温度が低下し、そのために産
業廃棄物の乾燥加熱速度が低下し、炉全体の処理
能力が低下するが、高温流動床１４形成のために
空搭速度を上昇させると、上述の吸熱反応が抑制
され、炉全体の処理能力を向上できる。さらに、
単に高温固定炉床１３を形成させると、第２図に
点線で示すように、炉壁の温度勾配がシヤープに
なり、一定上下範囲にわたつて溶融点ｔn以上
に維持すると、極めて高温になる炉壁部分が生
じ、炉壁熱損を生じやすいが、高温流動床１４が
存在すると、第２図に実線で示すように、炉壁の
温度分布が平担化され、炉壁昇温が抑えられ（最
大Δｔ度）、炉壁熱損を効果的に抑制できる。 As described above, when the high-temperature fluidized bed 14 is formed above the high-temperature fixed hearth 13, industrial waste and ash are encapsulated, and slag is attached to the carbon, thereby effectively suppressing the incorporation of dust into the exhaust gas. If the high-temperature fixed hearth 13 is simply formed, the unburned carbon located above it will undergo an endothermic reaction with the carbon dioxide gas in the combustion exhaust gas, reducing the exhaust gas temperature, thereby reducing the drying and heating rate of industrial waste. Although the throughput of the entire furnace decreases, if the empty loading speed is increased to form the high temperature fluidized bed 14, the above-mentioned endothermic reaction is suppressed and the throughput of the entire furnace can be improved. moreover,
If a high-temperature fixed hearth 13 is simply formed, the temperature gradient on the furnace wall becomes sharp, as shown by the dotted line in Figure 2, and if maintained above the melting point tn over a certain vertical range, it becomes extremely high temperature However, the presence of the high-temperature fluidized bed 14 flattens the temperature distribution on the furnace wall, suppressing the rise in furnace wall temperature, as shown by the solid line in Figure 2. (maximum Δt degrees), and furnace wall heat loss can be effectively suppressed.
尚、産業廃棄物としては、上下水処理汚泥、工
場廃水処理汚泥、都市ゴミ、工場廃棄ゴミ、及
び、それらを粉砕、乾燥あるいは焼却した中間処
理物、その他各種のものが対象とるなる。 Incidentally, industrial waste includes water and sewage treatment sludge, factory wastewater treatment sludge, municipal garbage, factory waste, intermediately treated products obtained by crushing, drying, or incinerating these, and various other items.
そして、高温固定炉床１３及び高温流動床１４
を形成するに、コークスに代えて石炭や黒鉛電極
屑等各種の材料が利用でき、それらを炭素系可燃
物質と総称する。また、炭素系可燃物質の粒径は
60mm以下が望ましいが、燃焼用酸素含有ガスの空
搭速度との相関で任意に設定できる。 Then, a high temperature fixed hearth 13 and a high temperature fluidized bed 14
Instead of coke, various materials such as coal and graphite electrode scraps can be used to form carbonaceous materials, and these are collectively referred to as carbon-based combustible materials. In addition, the particle size of carbon-based combustible substances is
It is desirable that it is 60 mm or less, but it can be set arbitrarily in relation to the empty loading speed of the oxygen-containing gas for combustion.
また、高温固定炉床１３及び高温流動床１４を
所定どおり形成させるに、粒径40mmない50mmのも
のを主体とするコークスを用いて、高温固定炉床
１３形成域での空搭速度を120Nm3／min.m2以下
に、かつ、高温流動床１４形成域でそれ以上にな
るようにする等、適宜給気路９ａ，９ｂからの供
給量を設定すればよい。 In addition, in order to form the high-temperature fixed hearth 13 and the high-temperature fluidized bed 14 as specified, coke mainly having a particle size of 40 mm or 50 mm is used, and the empty loading speed in the high-temperature fixed hearth 13 forming area is set to 120 Nm 3 . The amount of air supplied from the air supply paths 9a and 9b may be set as appropriate, such as to be less than /min.m 2 and greater in the high temperature fluidized bed 14 formation region.
以上要するに、本発明は、冒記方法いにおい
て、前記高温固定炉床１３の上方に、炭素系可燃
物質と産業廃棄物の高温流動床１４を形成させる
事を特徴とする。 In summary, the present invention is characterized in that, in the method described above, a high-temperature fluidized bed 14 of carbon-based combustible material and industrial waste is formed above the high-temperature fixed hearth 13.
すなわち、実施例で詳述したように、高温流動
床１４の作用によつて、燃焼排ガス中へのダスト
混入を効果的に抑制できて、排塵公害防止面で有
利となり、そして、必要以上に炉壁を高温にしな
いで所定の溶融処理を確実に行えて、炉壁熱損を
効果的に抑制した経済的燥炉が可能となり、さら
に、産業廃棄物の乾燥加熱速度を大にして、炉の
処理能力を十分に高められるようになるので、全
体として、極めて経済的にかつ良好に産業廃棄物
の溶融処理を行なえるようになつた。 That is, as described in detail in the embodiment, the action of the high-temperature fluidized bed 14 can effectively suppress the incorporation of dust into the combustion exhaust gas, which is advantageous in terms of preventing exhaust dust pollution. It has become possible to create an economical drying furnace that reliably performs the prescribed melting process without raising the temperature of the furnace wall and effectively suppresses heat loss on the furnace wall. As a result, it has become possible to melt industrial waste in an extremely economical and efficient manner as a whole.
図面は本発明に係る産業廃棄物の溶融処理方法
の実施の態様を例示し、第１図は炉の構造を示す
概略縦断面図、第２図は炉壁の温度を示すグラフ
である。
１３……高温固定炉床、１４……高温流動床。
The drawings illustrate embodiments of the method for melting industrial waste according to the present invention, in which FIG. 1 is a schematic vertical sectional view showing the structure of a furnace, and FIG. 2 is a graph showing the temperature of the furnace wall. 13...High temperature fixed hearth, 14...High temperature fluidized bed.
Claims (1)
形成し、その高温固定炉床１３の上方に産業廃棄
物及び粉粒状炭素系可燃物質を供給する産業廃棄
物の溶融処理方法であつて、前記高温固定炉床１
３の上方に、炭素系可燃物質と産業廃棄物の高温
流動床１４を形成させる事を特徴とする産業廃棄
物の溶融処理方法。1. A method for melting industrial waste, in which a high-temperature fixed hearth 13 of carbon-based combustible material is formed in a furnace, and industrial waste and granular carbon-based combustible material are supplied above the high-temperature fixed hearth 13. , the high temperature fixed hearth 1
3. A method for melting industrial waste, which comprises forming a high-temperature fluidized bed 14 of carbon-based combustible substances and industrial waste above 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12749579A JPS5653314A (en) | 1979-10-02 | 1979-10-02 | Melting processing method of industrial waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12749579A JPS5653314A (en) | 1979-10-02 | 1979-10-02 | Melting processing method of industrial waste |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5653314A JPS5653314A (en) | 1981-05-12 |
| JPS6242204B2 true JPS6242204B2 (en) | 1987-09-07 |
Family
ID=14961372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12749579A Granted JPS5653314A (en) | 1979-10-02 | 1979-10-02 | Melting processing method of industrial waste |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5653314A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2721422B2 (en) * | 1990-09-14 | 1998-03-04 | 大阪瓦斯株式会社 | Waste melting furnace |
| JP2721424B2 (en) * | 1990-09-14 | 1998-03-04 | 大阪瓦斯株式会社 | Waste melting furnace |
-
1979
- 1979-10-02 JP JP12749579A patent/JPS5653314A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5653314A (en) | 1981-05-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4346661A (en) | Furnace for treating industrial wastes | |
| JP4525009B2 (en) | Waste disposal by rotary kiln | |
| JP2000310408A (en) | Method and facility for refuse disposal | |
| US4949653A (en) | Process and apparatus for incineration | |
| JPS6242204B2 (en) | ||
| US3664278A (en) | Method and apparatus for incinerating solid materials | |
| US5771820A (en) | Method for the thermal treatment of waste material, particularly refuse, and a rotary tubular furnace for applying the method | |
| US3910207A (en) | Apparatus for pyrolytic decomposition of waste materials | |
| KR100727628B1 (en) | Apparatus for processing waste by molten aeration and method thereof | |
| US5857420A (en) | Method of incinerating and melting wastes and apparatus therefor | |
| JPH0520645B2 (en) | ||
| JPH02606B2 (en) | ||
| JP3783146B2 (en) | Self-burning fuel rods using ash body | |
| CA1148411A (en) | Furnace for treating industrial wastes | |
| JPH01184314A (en) | Refuse melting furnace | |
| JPH01121616A (en) | Control method for circulation particles volume and its control device in fluidized bed type-burner | |
| JPH0333964B2 (en) | ||
| JPH08254307A (en) | Waste treating method and waste treating device | |
| JPS6361811A (en) | Method of burning combustible lump matter | |
| JPS5866711A (en) | Melting method for refuse | |
| GB2034445A (en) | Fluidised bed combustion apparatus | |
| JPH06129618A (en) | Method of melting and processing waste material | |
| JP2831863B2 (en) | Vertical incinerator | |
| US3818847A (en) | Material treating furnace | |
| JPH0160730B2 (en) |