JPS633207B2 - - Google Patents
Info
- Publication number
- JPS633207B2 JPS633207B2 JP55087132A JP8713280A JPS633207B2 JP S633207 B2 JPS633207 B2 JP S633207B2 JP 55087132 A JP55087132 A JP 55087132A JP 8713280 A JP8713280 A JP 8713280A JP S633207 B2 JPS633207 B2 JP S633207B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- packed bed
- hearth
- waste
- carbon
- 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
- 239000007789 gas Substances 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 15
- 239000002699 waste material Substances 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 13
- 229910052799 carbon Inorganic materials 0.000 claims description 12
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 8
- 229910001882 dioxygen Inorganic materials 0.000 claims description 8
- 238000011282 treatment Methods 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 239000000543 intermediate Substances 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 description 15
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 4
- 239000012768 molten material Substances 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 125000001246 bromo group Chemical group Br* 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000010800 human waste Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000001629 suppression Effects 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)
- Incineration Of Waste (AREA)
- Gasification And Melting Of Waste (AREA)
- Processing Of Solid Wastes (AREA)
Description
【発明の詳細な説明】
本発明は、炭素系可燃物質によつて高温炉床を
形成すると共に、廃棄物あるいはその中間処理物
を、前記高温炉床に供給して燃焼、溶融させる方
法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method in which a high-temperature hearth is formed from a carbon-based combustible material, and waste or an intermediate treatment thereof is fed to the high-temperature hearth for combustion and melting.
本発明の目的は、燃焼排ガス中の臭素成分及び
有害成分の燃焼分解を安定して行わせられ、燃焼
排ガス中のNOx（酸化窒素ガス）量を少くでき、
炉壁損傷を抑制でき、その上、前記高温炉床にお
ける燃焼及び溶融物質の下降を安定して行わせら
れ、全体として、公害防止面及び操炉トラブル防
止面で極めて有効な方法を提供する点にある。 The purpose of the present invention is to stably perform combustion decomposition of bromine components and harmful components in combustion exhaust gas, reduce the amount of NOx (nitrogen oxide gas) in combustion exhaust gas,
The present invention provides a method that can suppress damage to the furnace wall, stably perform combustion in the high-temperature hearth and lower the molten material, and is overall extremely effective in terms of preventing pollution and preventing furnace operation troubles. It is in.
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.
キユポラタイプの溶融炉１に、炭素系可燃物質
から成る高温炉床２を形成し、ホツパー３から高
温炉床２に、ダンパー４ａ，４ｂを交互に開閉し
て、廃棄物あるいはその中間処理物を、炭素系可
燃物質と混合状態であるいは交互に供給し、炭素
系可燃物質と廃棄物あるいはその中間処理物の充
填層５を高温炉床２上に形成し、そして、下方の
羽口６から高温炉床２に空気等の酸素含有ガスを
供給して、高温炉床２において廃棄物あるいはそ
の中間処理物を燃焼、溶融し、さらに、溶融物を
炉１の底部近くに接続した取出路７から回収する
と共に、高温炉床２及び充填層５で発生したガス
を、炉１の上部において、羽口８から供給される
空気等の酸素含有ガスによつて後燃焼させ、排気
ダクト９やダスト除去用サイクロン１０等を通し
て大気中に放出する。 A high-temperature hearth 2 made of carbon-based combustible material is formed in a cupola-type melting furnace 1, and dampers 4a and 4b are alternately opened and closed to transport waste or intermediately processed materials from the hopper 3 to the high-temperature hearth 2. A packed bed 5 of the carbon-based combustible material and waste or intermediate treatment thereof is formed on the high-temperature hearth 2 by supplying the carbon-based combustible material in a mixed state or alternately. Oxygen-containing gas such as air is supplied to the bed 2 to burn and melt the waste or its intermediate products in the high-temperature hearth 2, and the molten material is recovered from a take-out passage 7 connected near the bottom of the furnace 1. At the same time, the gas generated in the high-temperature hearth 2 and the packed bed 5 is post-combusted in the upper part of the furnace 1 by oxygen-containing gas such as air supplied from the tuyeres 8, and Release into the atmosphere through cyclone 10 etc.
また、前記充填層５の上面が前記羽口８よりも
下方に維持されるように、ホツパー３から充填層
５への供給量を調節し、かつ、前記高温炉床２の
上端において酸素ガス濃度がほぼ零になると共
に、充填層５上端の温度が700℃ないし1200℃に
なるように、炭素系可燃物質の充填層５への供給
量、及び、高温炉床２への前記羽口６からの酸素
含有ガス供給量を調節する。 Further, the supply amount from the hopper 3 to the packed bed 5 is adjusted so that the upper surface of the packed bed 5 is maintained below the tuyere 8, and the oxygen gas concentration at the upper end of the high temperature hearth 2 is adjusted. The amount of carbon-based combustible material supplied to the packed bed 5 and the supply from the tuyere 6 to the high-temperature hearth 2 are adjusted so that the temperature at the upper end of the packed bed 5 becomes approximately zero and the temperature at the upper end of the packed bed 5 is 700°C to 1200°C. Adjust the amount of oxygen-containing gas supplied.
つまり、上述のごとき調節によつて、前記充填
層５を燃焼させないで高温の還元ゾーンに維持し
て、高温炉床２で発生したNOxの一部還元除去、
並びに、充填層５で発生する一酸化炭素ガスの作
用による充填層５中のアンモニアの窒素ガスと水
素ガスへの分解を行わせると共に、充填層５上部
の温度を、排ガス中の臭気成分やシアン化水素等
の有害ガス成分の燃焼分解が安定して行なわれる
と共に炉壁の熱等による損傷を抑制するに好適な
温度に安定維持し、かつ、高温炉床２の温度を、
溶融物の再固化が生じない温度に安定維持する事
ができるのである。 That is, by adjusting as described above, the packed bed 5 is maintained in a high temperature reduction zone without being combusted, and a portion of the NOx generated in the high temperature hearth 2 is reduced and removed.
In addition, ammonia in the packed bed 5 is decomposed into nitrogen gas and hydrogen gas by the action of carbon monoxide gas generated in the packed bed 5, and the temperature in the upper part of the packed bed 5 is adjusted to reduce odor components in the exhaust gas and hydrogen cyanide. The temperature of the high-temperature hearth 2 is stably maintained at a temperature suitable for stably burning and decomposing harmful gas components such as, and suppressing damage to the furnace wall due to heat, etc.
It is possible to stably maintain the temperature at which the melt does not solidify again.
尚、本発明は、下水汚泥、し尿性汚泥、工場排
水処理汚泥、浄水場汚泥、活性処理汚泥等の処理
に好適であるが、その他、都市ゴミやその燃却
灰、各種産業廃棄物等、各種の廃棄物に適用で
き、そして、それらに粉砕、乾燥、造粒、調湿等
の処理を施して得られる中間処理物にも適用でき
る。 The present invention is suitable for treating sewage sludge, human waste sludge, factory wastewater treatment sludge, water treatment plant sludge, activated treatment sludge, etc., but can also be used to treat municipal garbage, its combustion ash, various industrial wastes, etc. It can be applied to various types of waste, and can also be applied to intermediately processed products obtained by subjecting them to treatments such as pulverization, drying, granulation, and humidity control.
また、利用する溶融炉１の具体的構成は各種変
形可能であり、そして、高温炉床２を形成する炭
素系可燃物質としては、例えばコークス、石炭、
黒鉛電極屑等の各種のものが利用できる。 Further, the specific configuration of the melting furnace 1 to be used can be modified in various ways, and the carbon-based combustible material forming the high-temperature hearth 2 may be, for example, coke, coal,
Various materials such as graphite electrode scraps can be used.
また、前述のように、充填層５への炭素系可燃
物質の供給量、及び、廃棄物あるいはその中間処
理物の供給量、並びに、高温炉床２への酸素ガス
供給量等を調節するに、人為的に調節操作して
も、あるいは、適宜制御機構によつて自動的に行
わせてもよい。 In addition, as described above, the amount of carbon-based combustible material supplied to the packed bed 5, the amount of waste or intermediate treatment thereof, the amount of oxygen gas supplied to the high-temperature hearth 2, etc. The adjustment may be performed manually or automatically by an appropriate control mechanism.
また、充填層５の上面位置、高温炉床２の上端
での酸素ガス濃度、並びに、充填層５の上端温度
を検出するに、公知の各種測定手段及び計器を利
用できる。 Further, various known measuring means and instruments can be used to detect the upper surface position of the packed bed 5, the oxygen gas concentration at the upper end of the high temperature hearth 2, and the upper end temperature of the packed bed 5.
以上要するに、本発明は、冒記廃棄物溶融方法
において、前記高温炉床２の上方に位置する炭素
系可燃物質と廃棄物あるいはその中間処理物の充
填層５の上面が燃焼排ガス後燃焼用酸素含有ガス
供給のための羽口８よりも下方に維持されるよう
に、前記充填層５への供給量を調節し、前記高温
炉床２の上端において酸素ガス濃度がほぼ零にな
ると共に、前記充填層５の上端の温度が700℃な
いし1200℃になるように、炭素系可燃物質の供給
量、及び、前記高温炉床２への酸素含有ガス供給
量を調節する事を特徴とする。 In summary, the present invention provides the waste melting method described above, in which the upper surface of the packed bed 5 of the carbon-based combustible material and the waste or its intermediate material located above the high-temperature hearth 2 is exposed to oxygen for combustion after the combustion exhaust gas. The amount of oxygen gas supplied to the packed bed 5 is adjusted so that it is maintained below the tuyere 8 for supplying the contained gas, and the oxygen gas concentration becomes almost zero at the upper end of the high temperature hearth 2, and the It is characterized in that the amount of carbon-based combustible material supplied and the amount of oxygen-containing gas supplied to the high-temperature hearth 2 are adjusted so that the temperature at the upper end of the packed bed 5 is 700°C to 1200°C.
すなわち、羽口８からの酸素含有ガス供給によ
つて、充填層５から上昇してくる燃焼排ガスを高
温域において後燃焼させるから、燃焼排ガス中の
悪臭成分及びシアン化水素等の有害ガス成分を安
定して燃焼分解できる。 That is, by supplying oxygen-containing gas from the tuyere 8, the combustion exhaust gas rising from the packed bed 5 is post-combusted in a high temperature range, so that the malodorous components and harmful gas components such as hydrogen cyanide in the combustion exhaust gas are stabilized. It can be decomposed by combustion.
そして、高温炉床２上の充填層５に酸素ガスを
全くあるいは極めて少ししか供給しない事によつ
て、また、充填層５を高温に維持する事によつ
て、高温炉床２で発生したNOxを充填層５にお
いて一部還元除去できると共に、充填層５で発生
する一酸化炭素ガスの作用によつて廃棄物中のア
ンモニアを窒素ガスと水素ガスに分解でき、全体
として排ガス中に含まれるNOxを効果的に減少
できる。 By supplying no or very little oxygen gas to the packed bed 5 on the high-temperature hearth 2, and by maintaining the packed bed 5 at a high temperature, the NOx generated in the high-temperature hearth 2 can be reduced. can be partially reduced and removed in the packed bed 5, and ammonia in the waste can be decomposed into nitrogen gas and hydrogen gas by the action of carbon monoxide gas generated in the packed bed 5, and as a whole, NOx contained in the exhaust gas can be reduced. can be effectively reduced.
また、充填層５上端の温度を1200℃以下にする
事によつて、また、充填層５上端での燃焼を抑制
する事によつて、充填層５上方における高温燃焼
及びダスト飛散を抑制して、炉壁の熱損及び付着
物による損傷を効果的に抑制できる。 In addition, by lowering the temperature at the upper end of the packed bed 5 to 1200°C or less, and by suppressing combustion at the upper end of the packed bed 5, high temperature combustion and dust scattering above the packed bed 5 can be suppressed. , heat loss and damage to the furnace wall due to deposits can be effectively suppressed.
その上、充填層５上端の温度を700℃以上に維
持する事によつて、前述の燃焼排ガスの後燃焼及
びNOx発生抑制を良好にかつ安定して行えると
共に、高温炉床２に、その安定燃焼に必要なかつ
溶融物再固化防止に必要な量の酸素ガスを供給で
き、高温炉床２を、安定して廃棄物溶融に必要な
温度に確実に維持できると共に、溶融物質の下降
が円滑に行われる状態に確実に維持できる。 Moreover, by maintaining the temperature at the upper end of the packed bed 5 at 700°C or higher, the above-mentioned after-combustion of the flue gas and suppression of NOx generation can be performed satisfactorily and stably. It is possible to supply the amount of oxygen gas necessary for combustion and to prevent the re-solidification of the molten material, and the high-temperature hearth 2 can be stably maintained at the temperature necessary for melting the waste, and the molten material can descend smoothly. It can be maintained reliably in the state in which it is carried out.
要するに、廃棄物の溶融処理を、大気汚染防止
面で有利な状態でかつ操炉トラブルを抑制した状
態で、良好かつ安定的に行えるようになつた。 In short, it has become possible to perform the melting process of waste in a favorable and stable manner under conditions that are advantageous in terms of preventing air pollution and suppressing furnace operation troubles.
図面は本発明に係る廃棄物溶融方法の実施の態
様を例示し、使用する炉の概略縦断面図である。
２……高温炉床、５……充填層、８……羽口。
The drawing illustrates an embodiment of the waste melting method according to the present invention, and is a schematic vertical sectional view of a furnace used. 2... High temperature hearth, 5... Filled bed, 8... Tuyere.
Claims (1)
ると共に、廃棄物あるいはその中間処理物を、前
記高温炉床に供給して燃焼、溶融させる方法であ
つて、前記高温炉床２の上方に位置する炭素系可
燃物質と廃棄物あるいはその中間処理物の充填層
５の上面が燃焼排ガス後燃焼用酸素含有ガス供給
のための羽口８よりも下方に維持されるように、
前記充填層５への供給量を調節し、前記高温炉床
２の上端において酸素ガス濃度がほぼ零になると
共に、前記充填層５の上端の温度が700℃ないし
1200℃になるように、炭素系可燃物質の供給量、
及び、前記高温炉床２への酸素含有ガス供給量を
調節する事を特徴とする廃棄物溶融方法。1 A method in which a high-temperature hearth 2 is formed of a carbon-based combustible material, and waste or an intermediate treatment thereof is supplied to the high-temperature hearth to burn and melt, the method comprising: so that the upper surface of the packed bed 5 of carbon-based combustible materials and waste or intermediate treatment thereof located at
The amount of supply to the packed bed 5 is adjusted so that the oxygen gas concentration at the upper end of the high temperature hearth 2 becomes almost zero, and the temperature at the upper end of the packed bed 5 is 700°C or lower.
The amount of carbon-based combustible material supplied so that the temperature is 1200℃,
and a waste melting method characterized by adjusting the amount of oxygen-containing gas supplied to the high temperature hearth 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8713280A JPS5712216A (en) | 1980-06-25 | 1980-06-25 | Method of melting waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8713280A JPS5712216A (en) | 1980-06-25 | 1980-06-25 | Method of melting waste |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5712216A JPS5712216A (en) | 1982-01-22 |
| JPS633207B2 true JPS633207B2 (en) | 1988-01-22 |
Family
ID=13906431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8713280A Granted JPS5712216A (en) | 1980-06-25 | 1980-06-25 | Method of melting waste |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5712216A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004205188A (en) * | 2002-11-07 | 2004-07-22 | Tokyo Elex Kk | Waste treatment method and its device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4998486A (en) * | 1989-04-27 | 1991-03-12 | Westinghouse Electric Corp. | Process and apparatus for treatment of excavated landfill material in a plasma fired cupola |
| WO1997049954A1 (en) | 1996-06-24 | 1997-12-31 | Nippon Steel Corporation | Burning/melting method of waste melting furnace |
| WO2019041014A1 (en) * | 2017-09-01 | 2019-03-07 | Carlos Pereira Filho Alberto | Reactor for a process of advanced combustion for burning biomass and waste |
-
1980
- 1980-06-25 JP JP8713280A patent/JPS5712216A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004205188A (en) * | 2002-11-07 | 2004-07-22 | Tokyo Elex Kk | Waste treatment method and its device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5712216A (en) | 1982-01-22 |
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