JPH0979546A - Waste melting disposal apparatus - Google Patents

Waste melting disposal apparatus

Info

Publication number
JPH0979546A
JPH0979546A JP7234894A JP23489495A JPH0979546A JP H0979546 A JPH0979546 A JP H0979546A JP 7234894 A JP7234894 A JP 7234894A JP 23489495 A JP23489495 A JP 23489495A JP H0979546 A JPH0979546 A JP H0979546A
Authority
JP
Japan
Prior art keywords
carbon powder
waste
gas
combustion
zone
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.)
Pending
Application number
JP7234894A
Other languages
Japanese (ja)
Inventor
Masatsugu Yamagata
昌継 山縣
Michihiko Kamata
充彦 鎌田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Priority to JP7234894A priority Critical patent/JPH0979546A/en
Publication of JPH0979546A publication Critical patent/JPH0979546A/en
Pending legal-status Critical Current

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/34Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Landscapes

  • Gasification And Melting Of Waste (AREA)

Abstract

PROBLEM TO BE SOLVED: To accomplish a stable operation while reducing the consumption of an auxiliary fuel utilizing combustibles released into a waste gas effectively. SOLUTION: In a waste melting disposal apparatus which is provided with a waste melting furnace 1 having a thermal decomposition zone 1b for thermal decomposition of wastes dumped and a combustion melting zone 1c to melt the wastes by combustion as thermally decomposed by the thermal decomposition zone 1b arranged vertically and a tuyere 5 on the combustion melting zone 1c to blow an oxygen enriched gas and with a flue 2 to supply a gas generated in the waste melting furnace 1 to a gas combustion device 3, the flue 2 is provided with a carbon powder trapping device 4 to trap a carbon powder flowing out associated with the gas generated. A carbon takeoff device 4a is also provided to take the carbon powder trapped out of the carbon powder trapping device 4 and a carbon powder supply path 6 is linked to an oxygen enriched gas supply path 5a to the tuyere 5 to supply the carbon powder taken out by the carbon powder takeoff device 4a.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、廃棄物溶融処理装置に
関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste melting treatment apparatus.

【0002】[0002]

【従来の技術】近年、都市ゴミを始め雑多な廃棄物を一
括処理する廃棄物溶融炉が提案されている。係る廃棄物
溶融炉は、竪型炉の上部から順に、乾燥帯、熱分解帯、
燃焼溶融帯という三つの処理帯を配設して構成してあ
り、炉の上方から投入された廃棄物は、約300℃から
500℃付近の予熱乾燥帯で予熱乾燥され、約500℃
から800℃付近の熱分解帯で廃棄物に含まれる有機物
がメタン、水素、一酸化炭素等の可燃性ガスに熱分解さ
れ、約1500℃に維持される燃焼溶融帯で溶融処理さ
れるものである。上記熱分解帯で予熱乾燥後の廃棄物が
熱分解により炭化し、その炭化した炭素粉の一部が熱分
解ガスと共に排出される。前記燃焼溶融帯では、炉の上
方から投入された廃棄物の可燃成分が羽口から供給され
る空気や酸素富化ガスにより急激に燃焼反応して高温高
熱を発し、この熱により灰分や無機物が溶融処理され、
同時にその熱が前記熱分解帯における熱分解のために供
され、前記乾燥帯における乾燥のために供される。係る
廃棄物溶融炉で生じた発生ガスを燃料ガスとして、煙道
を介してガス燃焼装置としてのボイラへ供給し、該ボイ
ラで生成された蒸気を蒸気発電装置等の施設で利用する
廃棄物溶融処理装置が提案されている。
2. Description of the Related Art In recent years, a waste melting furnace has been proposed for collectively processing miscellaneous wastes including municipal waste. The waste melting furnace is a drying zone, a pyrolysis zone, and
It is configured by arranging three treatment zones called combustion and melting zones, and the waste introduced from the upper part of the furnace is preheat-dried in the preheat drying zone of about 300 ° C to 500 ° C to about 500 ° C.
The organic matter contained in the waste is pyrolyzed to combustible gases such as methane, hydrogen and carbon monoxide in the thermal decomposition zone around 800 ° C to 800 ° C and melted in the combustion melting zone maintained at about 1500 ° C. is there. The waste after preheating and drying is carbonized by thermal decomposition in the thermal decomposition zone, and a part of the carbonized carbon powder is discharged together with the thermal decomposition gas. In the combustion-melting zone, the combustible components of the waste introduced from above the furnace rapidly burn and react with the air and oxygen-enriched gas supplied from the tuyere to generate high temperature and high heat, and ash and inorganic substances are generated by this heat. Melt processed,
At the same time, the heat is used for pyrolysis in the pyrolysis zone and for drying in the drying zone. The generated gas generated in the waste melting furnace is supplied as fuel gas to the boiler as a gas combustor through the flue, and the steam generated in the boiler is used in facilities such as steam power generators. A processing device has been proposed.

【0003】[0003]

【発明が解決しようとする課題】しかし、上述の廃棄物
処理装置では、廃棄物に含まれる炭素成分が少ない場合
等に前記廃棄物溶融炉に廃棄物を燃焼溶融させるための
補助燃料としてガス、オイル燃料等の化石燃料を同時に
供給しなければならないにも拘わらず、前記炭素粉の一
部は溶融炉の燃料として使用されずに前記ガス燃焼装置
で燃焼され、灰は、他の飛散燃焼灰と共に廃ガス処理装
置内で捕集されていた。この炭素粉は、その燃焼熱量が
5000〜6000kcal/kgに達する有用な燃料
であるにもかかわらず、溶融のための補助燃料を別途炉
内に供給するという操業上の観点から、エネルギー資源
効率上の問題があった。そこで、本発明は、上記の問題
点を解決し、廃ガス中に放出される可燃物を有効に利用
して補助燃料の消費量を低減しながらも、安定した操業
を可能とする廃棄物溶融処理装置を提供することを目的
とする。
However, in the above-mentioned waste treatment device, when the carbon component contained in the waste is small, gas as an auxiliary fuel for burning and melting the waste in the waste melting furnace, Despite the fact that fossil fuel such as oil fuel must be supplied at the same time, part of the carbon powder is burned in the gas combustion device without being used as fuel in the melting furnace, and ash is other scattered combustion ash. It was also collected in the waste gas treatment equipment. Although this carbon powder is a useful fuel whose combustion heat amount reaches 5000 to 6000 kcal / kg, from the operational point of view that an auxiliary fuel for melting is separately supplied into the furnace, it is energy resource efficient. There was a problem. Therefore, the present invention solves the above-mentioned problems, and effectively uses combustible substances released in waste gas to reduce the consumption of auxiliary fuel, while at the same time, waste melting that enables stable operation. An object is to provide a processing device.

【0004】[0004]

【課題を解決するための手段】上記の目的のための本発
明の特徴構成は、煙道に、発生ガスに伴って流出する炭
素粉を捕集する炭素粉捕集装置を設けるとともに、前記
炭素粉捕集装置から捕集炭素粉を取出す炭素粉取出装置
を設けて、羽口への酸素富化ガス供給路に前記炭素粉取
出装置により取出された炭素粉を供給する炭素粉供給路
を連結してある点にある(請求項1に対応)。尚、前記
炭素粉捕集装置がサイクロン集塵器で構成されていれば
なおよく(請求項2に対応)、また、前記炭素粉供給路
が気流搬送路で構成されていればさらによく(請求項3
に対応)、さらに、前記炭素粉取出装置が定量供給装置
であればなおよい(請求項4に対応)。
The characteristic constitution of the present invention for the above object is to provide a carbon powder collecting device for collecting the carbon powder flowing out with the generated gas in the flue, A carbon powder extraction device for extracting the collected carbon powder from the powder collection device is provided, and a carbon powder supply passage for supplying the carbon powder extracted by the carbon powder extraction device is connected to the oxygen-enriched gas supply passage for the tuyere. There is a point (corresponding to claim 1). In addition, it is better if the carbon powder collecting device is composed of a cyclone dust collector (corresponding to claim 2), and it is more preferable if the carbon powder supply path is composed of an air flow carrying path (claim). Item 3
It is even better if the carbon powder extracting device is a constant amount supply device (corresponding to claim 4).

【0005】[0005]

【作用】従って、本発明の「廃棄物溶融処理装置」の前
記請求項1記載の特徴構成によれば、酸素富化ガス供給
路に炭素粉供給路を連結してあるので、羽口への酸素富
化ガスの流れに伴う吸引力により、炭素粉が前記羽口か
ら供給され、これを燃料として有効に利用できる。尚、
前記請求項2に記載の構成とすれば、捕集炭素粉が連続
的に取出しでき、また、前記請求項3に記載の構成とす
れば、炭素粉の炭素粉取出装置から酸素富化ガス供給路
への供給を酸素富化ガスの流れに伴う吸引力により行う
ことができ、そして、前記請求項4に記載の構成とすれ
ば、羽口からの炭素粉の供給量を比較的定量にすること
ができ、補助燃料の供給量調整を安定化することができ
る。
Therefore, according to the characterizing feature of the first aspect of the "waste melting treatment apparatus" of the present invention, the carbon powder supply passage is connected to the oxygen-enriched gas supply passage. The carbon powder is supplied from the tuyere by the suction force that accompanies the flow of the oxygen-enriched gas, and this can be effectively used as fuel. still,
With the configuration according to claim 2, the collected carbon powder can be continuously taken out, and with the configuration according to claim 3, the oxygen-rich gas supply from the carbon powder extraction device for carbon powder can be performed. The supply to the passage can be performed by the suction force that accompanies the flow of the oxygen-enriched gas, and according to the configuration of the above-mentioned claim 4, the supply amount of the carbon powder from the tuyere can be made relatively constant. Therefore, it is possible to stabilize the adjustment of the supply amount of the auxiliary fuel.

【0006】[0006]

【発明の効果】以上の結果、本発明に係る廃棄物溶融処
理装置の請求項1記載の構成によって、装置を複雑化す
ることなく安定した操業を可能にしながら、補助燃料を
節減でき、さらに、請求項2乃至4に記載の構成によっ
て、操業をより安定化し、取扱い易い廃棄物溶融処理装
置を提供できるようになった。
As a result of the above, the structure of claim 1 of the waste melting treatment apparatus according to the present invention enables stable operation without complicating the apparatus, and saves auxiliary fuel. With the configurations described in claims 2 to 4, it is possible to provide a waste melting treatment apparatus which is more stable in operation and easy to handle.

【0007】[0007]

【実施例】以下に実施例を説明する。廃棄物溶融処理装
置は、図1に示すように、廃棄物溶融炉1と、該炉1に
おける発生ガスを燃料とするガス燃焼装置と、前記ガス
燃焼装置に前記発生ガスを供給する煙道2に備られ、前
記発生ガスに伴って流出する炭素粉を捕集する炭素粉捕
集装置であるサイクロン集塵器4と、前記ガス燃焼装置
としてのボイラ3と、前記ボイラ3により生成された蒸
気により発電する発電装置7等を設けて構成し、前記サ
イクロン集塵器4で捕集した炭素粉を前記廃棄物溶融炉
1に備えた羽口5への酸素富化ガス供給路5aに供給す
る炭素粉供給路6を設けてある。
EXAMPLES Examples will be described below. As shown in FIG. 1, the waste melting treatment apparatus includes a waste melting furnace 1, a gas combustion apparatus that uses the gas generated in the furnace 1 as a fuel, and a flue 2 that supplies the gas combustion apparatus with the generated gas. , A cyclone dust collector 4, which is a carbon powder collector for collecting carbon powder flowing out with the generated gas, a boiler 3 as the gas combustion device, and steam generated by the boiler 3. Is provided with a power generation device 7 and the like, and the carbon powder collected by the cyclone dust collector 4 is supplied to the oxygen-enriched gas supply path 5a to the tuyere 5 provided in the waste melting furnace 1. A carbon powder supply passage 6 is provided.

【0008】各家庭等で発生し、ゴミ収集車により収集
された廃棄物は、前記廃棄物溶融炉1の上方に設けたホ
ッパ10に投入され、前記ホッパ10の下部に設けられ
た上部ダンパ11a、下部ダンパ11bからなる二重ダ
ンパ機構11を交互に開閉操作することにより前記廃棄
物溶融炉1における発生ガスが前記ホッパ10に吹き戻
るのを防止しながら前記廃棄物溶融炉1に投入される。
前記廃棄物溶融炉1は、竪型炉で、乾燥帯1a、熱分解
帯1b、燃焼溶融帯1cという三つの処理帯を順次上方
から下方に配設して構成してあり、該炉1の上方から投
入された廃棄物は、約300℃から500℃に維持され
る乾燥帯1aで乾燥され、さらに下降して約500℃か
ら800℃に維持される熱分解帯1bで廃棄物に含まれ
る有機物が大部分メタン、水素、一酸化炭素等の可燃性
ガス及び二酸化炭素に熱分解され、発生ガスとして前記
熱分解帯1bから前記乾燥帯1aを経て前記煙道2に流
出し、ガス化後の残渣は約1500℃に維持される燃焼
溶融帯1cで溶融処理されるものである。廃棄物に含ま
れる塩化ビニル等が前記熱分解帯1bで分解される過程
で発生する塩化水素等の腐食性ガスは、ボイラ3を通っ
た後、煙道を兼ねた反応室でそこに供給された石灰粉末
等アルカリ剤と中和反応して塩化カルシウム等の塩類と
して固定された後、前記反応室に続くバグフィルタで捕
捉除去される。前記燃焼溶融帯1cでは、乾燥・熱分解
されて残った可燃成分が、前記炭素粉供給路6を介して
供給される捕集炭素粉と共に、前記燃焼溶融帯1cの側
壁部に形成された羽口5から供給される空気や酸素富化
ガスと燃焼反応して高温高熱を発し、この熱により灰分
や無機物が溶融処理され、同時にそのとき発生する熱が
前記熱分解帯1bでの熱分解処理、前記乾燥帯1aでの
乾燥処理に供される。さらに、前記燃焼反応による発熱
量が、前記熱分解処理及び前記乾燥処理にとって不足で
ある場合には、前記酸素富化ガスにさらにメタンガスも
しくはオイル燃料等が補助燃料として添加されて羽口5
から供給される。前記燃焼溶融帯1cの下部には前記溶
融処理され、前記残渣の溶融した溶融スラグのプール
(プール部はなくとも良い。)があり、そのプール表面
の部位の側方にスラグ排出口が設けられ、前記スラグ排
出口から冷却水を蓄えた水冷槽の中に前記溶融スラグが
滴下し、急冷されて水砕スラグとなり、前記水冷槽の底
部を通じて設けられたコンベヤーによって取り出される
ようにしてある。
The waste generated in each household or the like and collected by a garbage truck is put into a hopper 10 provided above the waste melting furnace 1, and an upper damper 11a provided below the hopper 10. , The double damper mechanism 11 including the lower dampers 11b is alternately opened and closed to prevent the gas generated in the waste melting furnace 1 from being blown back to the hopper 10 while being introduced into the waste melting furnace 1. .
The waste melting furnace 1 is a vertical furnace, and is constituted by arranging three processing zones, namely a drying zone 1a, a thermal decomposition zone 1b, and a combustion melting zone 1c, sequentially from the upper side to the lower side. The waste introduced from above is dried in the drying zone 1a maintained at about 300 ° C to 500 ° C, and further lowered to be included in the waste in the thermal decomposition zone 1b maintained at about 500 ° C to 800 ° C. Most of the organic matter is thermally decomposed into combustible gas such as methane, hydrogen, carbon monoxide and carbon dioxide, and is discharged as a generated gas from the thermal decomposition zone 1b through the drying zone 1a to the flue 2 and after gasification. The residue of 1 is melt-processed in the combustion melting zone 1c maintained at about 1500 ° C. Corrosive gases such as hydrogen chloride generated in the process of decomposing the vinyl chloride contained in the waste in the thermal decomposition zone 1b are supplied to the reaction chamber that also serves as a flue after passing through the boiler 3. After being neutralized with an alkaline agent such as lime powder and fixed as salts such as calcium chloride, it is captured and removed by a bag filter following the reaction chamber. In the combustion melting zone 1c, the combustible components remaining after being dried and pyrolyzed, together with the collected carbon powder supplied through the carbon powder supply passage 6, are formed on the side wall of the combustion melting zone 1c. Combustion reaction with air or oxygen-enriched gas supplied from the mouth 5 generates high temperature and high heat, and this heat melts ash and inorganic substances, and at the same time, the heat generated at that time is the thermal decomposition treatment in the thermal decomposition zone 1b. , And is subjected to a drying process in the drying zone 1a. Further, when the calorific value due to the combustion reaction is insufficient for the thermal decomposition process and the drying process, methane gas or oil fuel or the like is further added to the oxygen-enriched gas as an auxiliary fuel, and the tuyere 5
Supplied from In the lower part of the combustion melting zone 1c, there is a pool of molten slag that has been melt-processed and the above-mentioned residue has melted (the pool part is not necessary), and a slag discharge port is provided on the side of the pool surface. The molten slag is dropped from the slag discharge port into a water cooling tank in which cooling water is stored, and is rapidly cooled to be granulated slag, which is taken out by a conveyor provided through the bottom of the water cooling tank.

【0009】前記炭素粉を前記羽口5から供給するため
に、前記酸素富化ガス供給路5aには前記炭素粉供給路
6を接続してある。この炭素粉供給路6は、気流搬送路
に形成してあり、前記酸素富化ガス供給路5aの直管部
分に設けた絞り部に接続してあり、前記羽口5に供給す
るガスの流れによって吸引され、同伴供給されるように
してある。尚、前記羽口5は、幾分下向きに形成してあ
り、前記供給するガスを、前記溶融スラグのプールの表
面(プールがないときにはスラグの流下面)に向けて吹
き付けるようにしてある。その結果、前記プールの表面
を通して、前記羽口5から供給されるガスの一部が溶融
スラグ中に吹き込まれ、溶融スラグ中の未燃物を液中燃
焼させ、溶融廃棄物を完全に酸化して未燃分を含まない
スラグとして排出できる。前記サイクロン集塵器4の下
端には、炭素粉取出装置として定量供給機能を有するス
クリューコンベア4aが取付けられてあり、このスクリ
ューコンベア4aで切り出した炭素粉を前記炭素粉供給
路6に排出するようにし、吸引による気流搬送を可能と
するために、前記炭素粉供給路6の他端側は開放してあ
る。
In order to supply the carbon powder from the tuyere 5, the carbon powder supply passage 6 is connected to the oxygen-enriched gas supply passage 5a. The carbon powder supply passage 6 is formed in an air flow passage, is connected to a throttle portion provided in a straight pipe portion of the oxygen-enriched gas supply passage 5a, and the flow of gas supplied to the tuyere 5 is reduced. It is designed to be sucked in and supplied together. The tuyere 5 is formed slightly downward so that the supplied gas is blown toward the surface of the pool of the molten slag (when there is no pool, the lower surface of the slag). As a result, a part of the gas supplied from the tuyere 5 is blown into the molten slag through the surface of the pool, the unburned matter in the molten slag is burned in the liquid, and the molten waste is completely oxidized. It can be discharged as slag containing no unburned components. At the lower end of the cyclone dust collector 4, a screw conveyor 4a having a constant supply function is attached as a carbon powder extractor, and the carbon powder cut out by the screw conveyor 4a is discharged to the carbon powder supply passage 6. Further, the other end side of the carbon powder supply passage 6 is opened in order to enable air flow conveyance by suction.

【0010】前記ボイラ3は、燃焼器3aを備えた燃焼
室3bに水管3cを配して構成してあり、前記廃棄物溶
融炉1において発生した約300℃〜500℃の可燃性
ガスが、前記廃棄物溶融炉1と前記燃焼器3aの間に形
成された煙道2を介して供給され、前記燃焼器3aで発
生した高温の燃焼ガスは、熱交換された後に誘引送風機
21により誘引されてエコノマイザ3dやバグフィルタ
20等の排ガス処理装置を介して煙突22から排気され
る。前記煙道2の前記サイクロン集塵器4の後流側位置
には、発生ガスを前記煙道2内部で部分燃焼させる燃焼
用の酸素又は酸素含有気体の供給口2aを、流入空気が
前記煙道2の下流側に流れるように角度を持たせた筒状
のガイド部材を設けて構成してあり、前記供給口2aか
ら例えば空気が供給されると、その空気により前記煙道
2を通過する発生ガスの一部が燃焼し、その際に発生す
る燃焼熱により発生ガスの温度低下を回避し、以て、気
化したタールが前記煙道2内で凝縮して内壁に付着する
ことを防止する。前記ボイラ3で生成された蒸気は、発
電機7bを駆動する蒸気タービン7aを備えた発電装置
7に安定的に供給され、前記発電装置7で発電された電
力が廃棄物溶融処理装置の稼働用の電力として使用さ
れ、余剰電力は外部に供給される。
The boiler 3 is constructed by arranging a water pipe 3c in a combustion chamber 3b equipped with a combustor 3a, and the combustible gas of about 300 ° C. to 500 ° C. generated in the waste melting furnace 1 is The high temperature combustion gas, which is supplied through the flue 2 formed between the waste melting furnace 1 and the combustor 3a and is generated in the combustor 3a, is attracted by the induced blower 21 after heat exchange. The exhaust gas is exhausted from the chimney 22 through the exhaust gas treatment device such as the economizer 3d and the bag filter 20. At a position on the wake side of the cyclone dust collector 4 of the flue 2, a supply port 2a of oxygen or an oxygen-containing gas for combustion for partially combusting the generated gas inside the flue 2 is provided. It is configured by providing a tubular guide member having an angle so as to flow to the downstream side of the passage 2. When, for example, air is supplied from the supply port 2a, the air passes through the smoke passage 2 by the air. A part of the generated gas is combusted, the temperature of the generated gas is prevented from lowering due to the combustion heat generated at that time, and thus vaporized tar is prevented from condensing in the flue 2 and adhering to the inner wall. . The steam generated by the boiler 3 is stably supplied to a power generator 7 including a steam turbine 7a that drives a power generator 7b, and the power generated by the power generator 7 is used for operating a waste melting treatment device. Is used as electric power for the electric power, and surplus electric power is supplied to the outside.

【0011】〔別実施例〕以下、別実施例について説明
する。上記の実施例では、羽口5を幾分下向きに形成し
てあるが、この羽口5の方向は任意であり、羽口5を溶
融スラグのプールの表面下に設けてもよい。また、炭素
粉捕集装置4はサイクロン集塵器でなくとも連続して炭
素粉を捕集排出できる捕集装置であることが好ましいの
であって、バグフィルタ等の捕集装置であってもよい。
さらに、炭素粉取出装置4aもスクリューコンベアに限
らず、ロータリーフィーダあってもよく、定量を取出し
て供給できるものが好ましいのであって、他の取出装置
であってもよく、殊に、炭素粉捕集装置4の下部にホッ
パを設けて、一次貯留し、これを定量取出して供給する
炭素粉取出装置4aを設ければ、前記炭素粉捕集装置4
は間欠的に排出するものであっても充分に機能を果た
す。さらに、前記実施例では、炭素粉供給路6を前記他
端側の開放した気流搬送路としたが、前記他端側に送風
機を備えていてもよい。また、前記炭素粉取出装置4a
をスクリューフィーダとして、この炭素粉供給路6内に
亘って前記炭素粉取出装置4aを設けてあってもよい。
先の実施例では、酸素又は酸素含有気体供給口2aを、
煙道2の前記サイクロン集塵器4の上流側位置に、流入
空気が前記煙道2の下流側に流れるように角度を持たせ
た筒状のガイド部材を設けて構成し、誘引送風機21に
よる誘引により外気が自然流入するように構成したもの
を説明したが、供給口2aの取り付け位置や構成はこれ
に限定するものではなく任意であり、例えば、ブロワフ
ァンにより強制的に外気を供給するように構成してもよ
い。煙道2で発生ガスを部分燃焼させるに必要な空気量
のみを供給するためには、供給口2aにバルブやダン
パ、又はブロワファン等の流量制限機構を設けるととも
に、前記煙道2内部の燃焼領域(空気供給口2aよりも
下流側)に温度センサを設けて、該温度センサによる検
出温度が、気化したタールの凝集を防ぐ温度、例えば、
600℃以上、望ましくは800℃に維持するように前
記流量制限機構を制御する制御手段を設けてもよい。さ
らには、前記温度センサの代わりに酸素ガス濃度センサ
を設けて、酸素ガス濃度が所定の値を維持するように前
記流量制限機構を制御する制御手段を設けてもよい。前
記空気供給口2aから燃焼用空気を供給する例を説明し
たが、燃焼用空気の代わりに燃焼用酸素等、酸素含有気
体を供給してもよい。
[Other Embodiment] Another embodiment will be described below. In the above embodiment, the tuyere 5 is formed slightly downward, but the direction of the tuyere 5 is arbitrary, and the tuyere 5 may be provided below the surface of the pool of molten slag. Further, it is preferable that the carbon powder collecting device 4 is not a cyclone dust collector but a collecting device capable of continuously collecting and discharging carbon powder, and may be a collecting device such as a bag filter. .
Further, the carbon powder extracting device 4a is not limited to the screw conveyor, but may be a rotary feeder, and one capable of extracting and supplying a fixed amount is preferable, and another extracting device may be used. If a hopper is provided in the lower part of the collecting device 4 for primary storage, and a carbon powder extracting device 4a for extracting and supplying the fixed amount is provided, the carbon powder collecting device 4 can be provided.
Works well even if it is discharged intermittently. Further, in the above-mentioned embodiment, the carbon powder supply path 6 is an air flow transfer path opened at the other end side, but a blower may be provided at the other end side. Further, the carbon powder extracting device 4a
May be used as a screw feeder, and the carbon powder extracting device 4a may be provided across the inside of the carbon powder supply passage 6.
In the above embodiment, the oxygen or oxygen-containing gas supply port 2a is
At the upstream side of the cyclone dust collector 4 of the flue 2, a tubular guide member having an angle so that the inflowing air flows to the downstream side of the flue 2 is provided, and the induction blower 21 is used. Although the configuration has been described in which the outside air is allowed to spontaneously flow in by attraction, the mounting position and the configuration of the supply port 2a are not limited to this, and for example, the outside air is forcibly supplied by a blower fan. You may comprise. In order to supply only the amount of air necessary for partially burning the generated gas in the flue 2, a flow rate limiting mechanism such as a valve, a damper, or a blower fan is provided at the supply port 2a, and the combustion inside the flue 2 is performed. A temperature sensor is provided in the region (downstream of the air supply port 2a), and the temperature detected by the temperature sensor is a temperature at which vaporized tar is prevented from aggregating, for example,
A control means for controlling the flow rate limiting mechanism may be provided so as to maintain at 600 ° C. or higher, preferably 800 ° C. Further, instead of the temperature sensor, an oxygen gas concentration sensor may be provided, and a control means for controlling the flow rate limiting mechanism so that the oxygen gas concentration maintains a predetermined value may be provided. Although the example of supplying the combustion air from the air supply port 2a has been described, an oxygen-containing gas such as combustion oxygen may be supplied instead of the combustion air.

【0012】尚、特許請求の範囲の項に図面との対照を
便利にするために符号を記すが、該記入により本発明は
添付図面の構成に限定されるものではない。
In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the accompanying drawings.

【図面の簡単な説明】[Brief description of drawings]

【図1】廃棄物溶融処理装置のブロック構成図FIG. 1 is a block configuration diagram of a waste melting treatment device.

【符号の説明】[Explanation of symbols]

1 廃棄物溶融炉 1b 熱分解帯 1c 燃焼溶融帯 2 煙道 3 ガス燃焼装置 4 炭素粉捕集装置 4a 炭素粉取出装置 5 羽口 5a 酸素富化ガス供給路 6 羽口への炭素粉供給路 1 Waste Melting Furnace 1b Pyrolysis Zone 1c Combustion Melting Zone 2 Flue 3 Gas Combustor 4 Carbon Powder Collector 4a Carbon Powder Extractor 5 Tuyere 5a Oxygen-enriched Gas Supply Channel 6 Carbon Powder Supply Channel to Tuyere

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 投入された廃棄物を熱分解する熱分解帯
(1b)と、前記熱分解帯(1b)で熱分解された廃棄
物を燃焼溶融する燃焼溶融帯(1c)を上下に配し、前
記燃焼溶融帯(1c)に、酸素富化ガスを吹き込む羽口
(5)を備えてなる廃棄物溶融炉(1)と、 前記廃棄物溶融炉(1)における発生ガスをガス燃焼装
置(3)に供給する煙道(2)とを備えてある廃棄物溶
融処理装置であって、 前記煙道(2)に、前記発生ガスに伴って流出する炭素
粉を捕集する炭素粉捕集装置(4)を設けるとともに、
前記炭素粉捕集装置(4)から捕集炭素粉を取出す炭素
粉取出装置(4a)を設けて、前記羽口(5)への酸素
富化ガス供給路(5a)に前記炭素粉取出装置(4a)
により取出された炭素粉を供給する炭素粉供給路(6)
を連結してある廃棄物溶融処理装置。
1. A thermal decomposition zone (1b) for thermally decomposing the input waste and a combustion melting zone (1c) for combusting and melting the waste thermally decomposed in the thermal decomposition zone (1b) are arranged vertically. Then, a waste melting furnace (1) having a tuyere (5) for blowing an oxygen-enriched gas into the combustion melting zone (1c), and a gas combustion device for generating gas generated in the waste melting furnace (1). A waste melting treatment apparatus comprising: a flue (2) for supplying to (3), wherein the flue (2) collects carbon powder flowing out with the generated gas. With the collection device (4),
A carbon powder extraction device (4a) for extracting the collected carbon powder from the carbon powder collection device (4) is provided, and the carbon powder extraction device is provided in the oxygen-enriched gas supply path (5a) to the tuyere (5). (4a)
Carbon powder supply path (6) for supplying the carbon powder taken out by
Waste melting treatment equipment connected to the.
【請求項2】 前記炭素粉捕集装置(4)がサイクロン
集塵器で構成されている請求項1記載の廃棄物溶融処理
装置。
2. The waste melting treatment device according to claim 1, wherein the carbon powder collecting device (4) is constituted by a cyclone dust collector.
【請求項3】 前記炭素粉供給路(6)が気流搬送路で
構成されている請求項1又は2に記載の廃棄物溶融処理
装置。
3. The waste melting treatment apparatus according to claim 1, wherein the carbon powder supply passage (6) is constituted by an air flow conveying passage.
【請求項4】 前記炭素粉取出装置(4a)が定量供給
装置である請求項1〜3の何れかに記載の廃棄物溶融処
理装置。
4. The waste melting treatment apparatus according to claim 1, wherein the carbon powder extraction device (4a) is a constant amount supply device.
JP7234894A 1995-09-13 1995-09-13 Waste melting disposal apparatus Pending JPH0979546A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7234894A JPH0979546A (en) 1995-09-13 1995-09-13 Waste melting disposal apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7234894A JPH0979546A (en) 1995-09-13 1995-09-13 Waste melting disposal apparatus

Publications (1)

Publication Number Publication Date
JPH0979546A true JPH0979546A (en) 1997-03-28

Family

ID=16977981

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7234894A Pending JPH0979546A (en) 1995-09-13 1995-09-13 Waste melting disposal apparatus

Country Status (1)

Country Link
JP (1) JPH0979546A (en)

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