JP2769623B2 - Tilting cross-standing 施回 flow melt method and apparatus - Google Patents

Tilting cross-standing 施回 flow melt method and apparatus

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JP2769623B2
JP2769623B2 JP18320088A JP18320088A JP2769623B2 JP 2769623 B2 JP2769623 B2 JP 2769623B2 JP 18320088 A JP18320088 A JP 18320088A JP 18320088 A JP18320088 A JP 18320088A JP 2769623 B2 JP2769623 B2 JP 2769623B2
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furnace
combustion
swirling flow
air
slag
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JPH0233511A (en )
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泰彦 上条
義一 上田
輝二 久保田
操 五十嵐
法親 田中
敬 石田
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千葉市
月島機械株式会社
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    • 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
    • Y02E20/30Technologies for a more efficient combustion or heat usage
    • Y02E20/34Indirect CO2 mitigation, i.e. by acting on non CO2 directly related matters of the process, e.g. more efficient use of fuels
    • Y02E20/348Air pre-heating

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、乾燥下水汚泥や石炭等の不燃物を含む粉状可燃物を燃焼させ、該粉状可燃物に含まれる不燃物を熱効率良く溶融しスラグ化して系外に取出すことができる傾斜横置形旋回流溶融方法およびその装置に関する。 The present invention [relates] Description of the Invention, the powdery combustible containing incombustible material such as dried sewage sludge or coal is burned, well incombustible thermal efficiency included in the powder form combustibles tilting cross-standing swirling flow melting method can be taken out melting, and slag from the system and its devices.

〔従来の技術〕 [Prior art]

従来、乾燥下水汚泥や石炭のように不燃物を含む粉状可燃物を、円筒状の炉体の端面あるいは側面から燃焼用空気に乗せて、炉体の内部に強い旋回流が生じるように噴射させつつ燃焼させ、その燃焼熱により焼却灰を溶融させて、炉体出口から流出させるようにした旋回流溶融炉は、一般に広く知られている(例えば、特開昭61−21 Conventionally, a powdery combustibles containing incombustible as dry sewage sludge and coal, as from the end surface or side surface of the cylindrical furnace body placed on a combustion air, a strong swirling flow is generated in the interior of the furnace body injection burned while, the by melting ash by combustion heat, swirling flow melting furnace so as to flow out from the furnace body outlet is widely known (e.g., JP-61-21
3408号公報〔以下「文献1」という。 3408 JP [hereinafter referred to as "Document 1". 〕又は特願昭62− ] Or Japanese Patent Application No. Sho 62-
4489号明細書〔以下「文献2」という。 4489 Pat [hereinafter referred to as "Document 2". 〕参照)。 〕reference).

文献1に記載された旋回溶融炉は、円筒状の炉体が所定角度傾斜して配置され、この炉体の一側端面部(上流側端面部)に、重油供給管及び重油燃焼用の空気供給管を有する補助バーナーが設置され、かつ炉体の他側端面部(下流側端面部)に、廃ガス出口と溶融物落口とを上下に備えた排出用筒体が連結されると共に、上記炉体の一側端寄りの外周面上部に、粉状可燃物供給口と燃焼用空気口とが設けられたものである。 And swirl melting furnace described in the literature 1, a cylindrical furnace body is arranged inclined at a predetermined angle, the one side end face portion of the furnace body (the upstream side end surface), air fuel oil supply pipe and a fuel oil combustion installed auxiliary burner with a supply pipe, and the other side end face portion of the furnace body (downstream end surface), with discharge cylinder body provided with a waste gas outlet and melt Ochiguchi vertically is connected, the outer peripheral surface upper portion of the one side edge toward the furnace body, in which the powdery combustible material supply port and a combustion air inlet is provided. そして、上記補助バーナーは、重油供給管と空気供給管とが二重構造とされ、これらの先端部に、ノズル流を旋回させる案内羽根が付設されたものである。 Then, the auxiliary burner, a heavy oil feed pipe and the air supply tube is a double structure, these tip in which guide vanes for pivoting the nozzle flow is attached.

文献2には、一次燃焼炉と二次燃焼炉から成る傾斜横置形旋回流溶融炉が記載されている。 The literature 2, the inclined lateral mounted type swirling flow melting furnace consisting of primary combustion furnace and a secondary combustion furnace is described. そして、二次燃焼炉の中間部に燃焼用空気供給口が記載され、該炉内へ酸素補給が供給可能となつている。 The described combustion air supply opening in the middle portion of the secondary combustion furnace, the oxygen supply is summer and can be supplied into the furnace. また、該炉にはオリフイス状の邪魔板が図示される。 Further, the furnace orifice shaped baffles are shown. そして、該邪魔板から上手の炉内を上流側、中間部、下流側に三分してその実施結果が説明されている。 Then, the upstream side of the good in the furnace from the baffle plate, an intermediate portion, a three-minute its implementation result on the downstream side is described.

〔発明が解決しようとする課題〕 [Problems that the Invention is to Solve]

しかし、上記従来の旋回流溶融炉にあつては、その炉内を高温に保持して、溶融を行なう炉であつて、その炉の高温性から、炉体の保護、炉内作用の安定、炉体熱の処理法など、当該溶融炉自身の解決すべき問題点と、本発明の適用すべき産業の公共性、すなわち、廃棄物処理、排熱利用などの省エネルギー処理、メンテナンス・ However, the above shall apply conventional swirling flow melting furnace, retains its furnace to a high temperature, shall apply in a furnace for performing melting, from the hot of the furnace, the protection of the furnace body, stable furnace action, such as a furnace body heat treatment, and problems to be solved in the melting furnace itself, industrial public to be applied to the present invention, i.e., waste treatment, energy saving process such as waste heat utilization, maintenance
フリーなど、溶融炉運転系統全体を有機的にして解決すべき問題点とを合せて、総合的に解決する運転方法が確立されなければならなかつた。 Free like, the entire melting furnace operating system together with the problems to be solved in the organic comprehensively resolve operation method of has failed to be established. 以下にそれらの問題点を列挙する。 Enumerate these problems below.

(イ) 比較的低温の乾燥汚泥を一次燃焼炉又は二次燃焼炉へ直接投入するので、汚泥と燃焼用空気とからなる流動混合体をできるだけ効率よく生成させなければ当該炉での昇温の立上りないし保持が悪い。 (B) Since relatively directly introducing a cool, dry sludge into the primary combustion furnace or the secondary combustion furnace, if was possible efficiently produce a fluid mixture consisting of sludge and combustion air in the furnace heating rising or retention is poor.

(ロ) 従来、炉体熱を空冷により除去するか、あるいは復水を供給して蒸気として排熱することが行なわれていた。 (B) conventional, or removed by cooling the furnace body heat, or that supplies condensate to drain heat as steam has been carried out. そのため、炉体ジヤケツト部がボイラー仕様となるために缶体形状に設計上の制約を受けることが多かつた。 Therefore, multi be subject to design constraints on the can body shape for the furnace Jiyaketsuto section is boiler specification Katsuta.

(ハ) 炉内の旋回流作用の安定化について次の問題点がある。 Stabilization of the swirling flow action of the (c) reactor has the following problems. 第1に、二次燃焼炉内の邪魔板についてであるが、炉内反応部分と排出部分とを仕切る邪魔板は、被処理汚泥の滞留時間、排気量および溶融スラグ排出量との関数で、その形状は決まる。 First, although the baffle plate in the secondary combustion furnace, baffle partitioning the furnace react partially with the discharge portion, a function of the residence time, the exhaust volume and molten slag discharge amount of the target sludge, its shape is determined. 邪魔板ないしオリフイスの開口面積は、炉断面積との比によつて、その比が小であれば該滞留時間は大きく、溶融スラグ排出量は小さくなるかまたは阻害される。 The opening area of ​​the baffle plate or orifice is connexion by the ratio of the Rodin area, the ratio is largely the residence time if a small, molten slag discharge amount is or inhibit decreases. 該比を大きくしてスラグ排出量を取り出し易くすれば、滞留時間が短かくなる。 If easily taken out is increased to the slag discharge amount to the ratio, residence time shorter. 両要素の釣合には困難がつきまとう。 Difficulties in balance of both elements is beset.

第2に、二次燃焼炉内の安定温度領域の拡大の問題であるが、前記邪魔板の形状の選定とも関連するが、該炉内の高温状態が安定することは、燃焼反応を良好に保持し、生成する溶融スラグの流動性を確保することでもある。 Second, a problem of expansion of the stable temperature region of the secondary combustion furnace, a second set of selection of the shape of the baffle plate, the high temperature state in the furnace is stabilized, good combustion reaction holding is also to ensure the fluidity of the molten slag to be generated. すなわち、該スラグの排出を効果的にし、炉の継続運転を効果的にする。 In other words, the effective discharge of the slag, to be effective continuous operation of the furnace.

第3に、溶融スラグ排出に伴なうスラグ排出部閉塞予防対策の問題であるが、溶融スラグが燃焼反応領域外で、排出に当つて生じる障害は、第5図に示す例のように、上方から下方にスラグを排出部4へ案内するとき、 Third, a problem of accompanying slag discharge obstruction prevention to the molten slag discharge, in the molten slag burning reaction zone outside those connexion resulting failure to discharge, as in the example shown in FIG. 5, when guiding the slag to a discharge portion 4 from above downward,
炉壁を濡らして降下する溶融スラグが、壁面に固着して、排気の漏洩を少くし、溶融スラグを通過させる狹搾部を遂には閉塞することである。 Molten slag drops wet the furnace wall, and fixed to the wall, small comb exhaust leakage, finally the 狹搾 portion for passing the molten slag is to blockage. この狹搾部の開口が図示の大きさより広くても、炉壁を濡らしながら溶融スラグを排出するときに宿命的に生ずる炉運転停止原因である。 Also opening of the 狹搾 portion is wider than the size shown, a furnace shutdown causes occurring fated when discharging the molten slag while wetting the furnace wall.

第4に、二次燃焼炉への燃焼用空気の供給が、該炉の旋回流雰囲気を阻害しないようにすることが必要である。 Fourth, the supply of combustion air into the secondary combustion furnace, it is necessary to avoid inhibiting the swirling flow atmosphere furnace. 該炉内高温雰囲気を補助空気で補給することによつて酸素供給の目的に果せる。 Oseru the O connexion purposes of the oxygen supply to replenish the furnace in a high temperature atmosphere in the auxiliary air. そのために旋回流を阻害できない。 I can not inhibit the swirling flow to the.

(ニ) 運転系統全体の有機性に係わる問題であるが、 (D) is a problem relating to organic overall operation system,
炉の排気熱をどのように燃焼用空気に熱交換し、転換した該空気の保有熱とその供給量とを有効に管理する方法が確立されなければならないし、また炉とその前処理施設である乾燥機との有効熱利用法が確立されなければならない。 Heat exchanger on how combustion air exhaust heat of the furnace, to a method of effectively managing the transformation was air of potential heat and the amount of supply must be established, also the furnace and its pretreatment facility there effective thermal utilization of the dryer must be established.

本発明は、上記事情に鑑みてなされたもので、その目的とするところは、粉状可燃物を効率良く燃焼させることができ、かつ炉体内の温度を一定にかつ高温に保持することができ、粉状可燃物に含まれる不燃物を完全に溶融させて、円滑に炉外に排出させることができる旋回流溶融炉を提供することにあり、かつ、その運転方法を本技術分野の要部全体を考慮して管理可能の有効で効果的なものとして提供することにある。 The present invention has been made in view of the above circumstances, and has as its object, it is possible to efficiently burn the powdery combustible materials, and can be maintained at a high temperature to and the temperature of the furnace body at a constant the incombustible matter contained in the powdery combustibles completely melted smoothly is to provide a swirling flow melting furnace can be discharged out of the furnace, and, essential part of the art the operation method taking into account the whole to provide as manageable effective and efficient for.

〔課題を解決するための手段〕 [Means for Solving the Problems]

上記目的を達成するために本発明は、以下の特徴を有する。 To accomplish the above object has the following characteristics.

本発明方法は、(1)被処理汚泥を乾燥した後,該汚泥を旋回流雰囲気中で高温処理して溶融スラグを生成させ、該溶融スラグを冷却する廃棄物の旋回流溶融方法において、乾燥汚泥を400〜600℃の燃焼用空気に混入した後、旋回流状態にて1000〜1200℃で一次燃焼炉内で一次燃焼させ、その一次燃焼で生成した流動混合体を旋回流状態で、1350〜1450℃の二次燃焼炉内に供給して二次燃焼させするとともに、該二次燃焼雰囲気中で上流側から下流側にかけて、燃焼用空気を分散供給可能とする前記流動混合体の昇温手段を配設して、溶融スラグを完全溶融して炉排出部へ移送した後、冷却スラグとして取り出し、燃焼済み排気は、含有する浮遊塵を除去した後、その保有熱を別途に取入れる空気と熱交換して、前記燃焼用空気として、前記一次ない The present invention is, (1) after drying the treated sludge, to produce a molten slag and high temperature treatment of the sludge in a swirling flow atmosphere, in the swirling flow melting method of waste to cool the molten slag, dried after mixed sludge to combustion air of 400 to 600 ° C., the swirling flow is the primary combustion in the primary combustion furnace at 1000 to 1200 ° C. in the state, the fluid mixture produced in the primary combustion in the swirling flow state, 1350 with 1450 to by secondary combustion is supplied to the secondary combustion furnace ° C., from the upstream side to the downstream side in the secondary combustion atmosphere, raising the temperature of the fluid mixture to be dispersed supplying combustion air by arranging means, after transferring completely melted the molten slag to the furnace discharge section, taken out as a cooling slag, burned exhaust, after removing the floating dust containing air to incorporate the heat retained separately and by heat exchange, as the combustion air, the primary no し二次燃焼用の昇温手段用に供給する燃焼用空気分割供給系を有し、前記二次燃焼炉の側壁に配置する復水加熱ジャケットへ前記乾燥の際に発生する約90℃以下の復水を供給して180〜190℃の高温水を得、前記取入れる空気と熱交換した後の排気とともに該高温水をボイラーへ供給し加熱して蒸気とし、該蒸気を適圧に減圧して該乾燥の加熱媒体とすることを特徴とする傾斜横置形旋回流溶融方法である。 And has a combustion air divided supply system for supplying for Atsushi Nobori means for secondary combustion, said about 90 ° C. or less generated when drying the the condensate heating jacket arranged on the side wall of the secondary combustion furnace supplying condensate to obtain a high-temperature water of 180 to 190 ° C., the high-hot water and heating by supplying to the boiler as steam and vacuum gas the evaporated to Teki圧 together with the exhaust after the incorporation air heat exchanger Te is a tilting cross-standing swirling flow melting method characterized in that the heating medium of the drying.

また、(2)各燃焼用空気は、それらを供給する燃焼用雰囲気に対し旋回流生成可能に供給することを特徴とする前記(1)に記載の傾斜横置形旋回流溶融方法である。 Further, (2) the combustion air is an inclined lateral mounted type swirling flow melting method according to (1) and supplying them to be swirling flow generated for combustion atmosphere supplies.

また、(3)被処理汚泥を乾燥した後,該汚泥を旋回流雰囲気中で高温処理して溶融スラグを生成させて廃棄物処理する旋回流溶融方法において、旋回流溶融炉の側壁に配置する復水加熱ジャケットへ前記乾燥の際に発生する約90℃以下の復水を供給して180〜190℃の高温水を得、該旋回流溶融炉より排出して、その保有熱を、取入れ空気へ熱交換した後の排気とともに該高温水をボイラーへ供給し加熱して蒸気とし、該蒸気を適圧に減圧して該乾燥の加熱媒体とすることを特徴とする旋回流溶融炉の炉体熱の循環有効利用法である。 Further, (3) after drying the treated sludge, the swirling flow melting method of treating waste to produce a molten slag and high temperature treating the sludge in the swirling flow atmosphere, arranged on the side wall of the swirling flow melting furnace about 90 ° C. or less of condensate generated to condensate heating jacket during the drying by supplying to obtain hot water of 180 to 190 ° C., and discharged from the revolving circumfluence melting furnace, the potential heat, intake air together with the exhaust after the heat exchange by supplying the high hot water to the boiler heating steam into and vacuum gas the evaporated to Teki圧 swirling flow melting furnace of the furnace body, characterized in that the heating medium of the dried a circulation effective usage of heat. .

本発明装置は、(4)乾燥機を経た被処理汚泥を、予熱され燃焼用空気とともに供給する一次燃焼炉と該一次燃焼炉を炉体の断面接線方向に沿って連接する二次燃焼炉とで構成する旋回流溶融炉において、二次燃焼炉の上流側を上方に、下流側を下方に、かつ、炉排出部に連接して該炉本体を横置し、該下流側の入口を下方に逆U字状開口を有する邪魔板で仕切るとともに、該上流側に一次燃焼炉を、前記上流側と前記下流側との中間部に昇温手段を連設し、該昇温手段は、燃焼用空気供給口または燃焼用空気供給口を伴なう補助バーナーが配設され、前記乾燥機の復水を前記二次燃焼炉の側壁に配置された復水加熱ジャケットへ供給し加熱された高温水をボイラーへ供給し蒸気として該乾燥機へ循環可能としたこと特徴とする傾斜横置形旋 The present invention apparatus, (4) the treated sludge passing through the dryer, the secondary combustion furnace which connects along section tangential preheated primary combustion furnace and said primary combustion furnace the furnace body for supplying with combustion air in the swirling flow melting furnace constituting in, the upper upstream side of the secondary combustion furnace, the downstream side down, and then Yoko置 the furnace body and connected to the furnace discharge section, below the inlet of the downstream side in conjunction with partitioned by baffle plate having an inverted U-shaped opening, a primary combustion furnace in the upstream side, the heating device is continuously provided in an intermediate portion between the downstream side and the upstream side, 該昇 raising means includes a combustion accompanied auxiliary burner use air supply port or the combustion air supply opening is arranged, wherein the dryer condensate supplied to arranged condensate heating jacket on the side wall of the secondary combustion furnace heated hot tilting cross-standing handed, characterized by water as a possible circulating into the dryer as a vapor supplied to the boiler 流溶融炉である。 Flow is a melting furnace.

また、(5)炉排出部には二次燃焼炉の炉底に沿って該炉の下流端に延在する舌端状に、かつ、凹状に形成するスラグ排出路を有し、該スラグ排出路の排出端の下方にスクレーパーと回転するスラグ冷却機とよりなる冷却部を有し該排出端より落下したスラグを該スラグ冷却機から脱離可能としたこと特徴とする前記(4)に記載の傾斜横置形旋回流溶融炉である。 Further, the tongue blade shape extending downstream end of the furnace along the furnace bottom of the secondary combustion furnace (5) furnace discharge section, and has a slag discharge passage for recessed, the slag discharge wherein the slag that has fallen from the exhaust Extension end has become more cooling unit slag cooler and the rotating scraper below the discharge end of the road to (4), wherein it was possible desorption from the slag cooler a tilting cross-standing swirling flow melting furnace.

〔作用〕 [Action]

(1) 本発明の燃焼用空気分割供給系は、二次燃焼炉の排気熱を常温の燃焼用空気へ熱交換(ガス−ガス)して該空気を昇温し、その昇温した空気を一次燃焼炉と二次燃焼炉へ分割供給することによつて、空気の全供給量と温度(または熱量)を総合管理可能とする。 (1) combustion air divided supply system of the present invention, the heat exchanger exhaust heat of the secondary combustion furnace to room temperature of the combustion air - heated to air with (Gas Gas), the heated air Yotsute on dividing supplied to the primary combustion furnace and a secondary combustion furnace, to allow total control of all the supply amount and the temperature of the air (or heat). また、 (2) 乾燥機の熱源を蒸気とし、その復水を旋回流溶融炉の二次燃焼炉の炉外壁ジヤケツトへ供給して、高圧高温水として取出し、該高温水を用いることによつて、 Further, (2) a heat source of the dryer and the steam, and supplies the condensate to the furnace outer wall Jiyaketsuto the secondary combustion furnace of the swirling flow melting furnace, taken out as a high pressure hot water, Yotsute to the use of high-hot water ,
空気より大きな潜熱を利用することができる。 It is possible to use a large latent heat than air. その結果、除熱媒体を空気や蒸気とする従来例に比べ、比較的低温で流量少なく炉体熱を炉外へ取り出すことができる作用がある。 As a result, comparing the heat removal medium in the conventional example in which the air and vapor, an effect which can be taken out flow less furnace body heat out of the furnace at a relatively low temperature. この得られた高温水を別途ボイラーで加熱処理し、その処理した蒸気を乾燥機の熱源に、減圧に調節する減圧弁を介して供給する。 The resulting hot water separately heated in the boiler, the treated vapor to the heat source of the dryer, supplied via a pressure reducing valve for adjusting the vacuum. この循環系を形成することによつて、有効熱利用が得られる。 Yotsute to form the circulation system, the effective heat utilization is obtained. この循環系に要部に高温水を用いることにより、炉体壁の保全を従来例(キャスタブル交換が約4〜5回/年)より向上するという作用が生れる。 The use of hot water in the main part of this circulation system, the effect of conventional preservation furnace body wall (castable replacement of about 4-5 times / year) improved from birth. (キヤスタブル交換は年に1〜2回である。) (3) 一次燃焼量と二次燃焼用とにほぼ等分に供給するとともに、二次燃焼用としてほぼ等分に分割供給するように燃焼用空気を案分することにより、二次燃焼炉内の温度を広い領域にわたつて高温状態で安定化できるという作用がある。 (Kiyasutaburu exchange is 1-2 times per year.) (3) is supplied substantially equally to the primary combustion amount and the for secondary combustion, combustion so as to divide supplied substantially equally for the secondary combustion by prorated to use air, an effect that can be stabilized in connexion hot state cotton temperature in the secondary combustion furnace in a wide area. そして、該炉内中間域を長く安全確保できるとともに、適当数に分割増加させる該供給口によつて中間域の長短に対応し得るという作用が生れた。 Then, it is possible to increase safety midrange in the furnace, it was born short and long in effect that may correspond to O connexion intermediate zone to said supply port to split increased to an appropriate number.

(4) 燃焼用空気を供給するに当つて、どの供給も旋回流生成可能に行なうので、炉内旋回流は助長するこそすれ、阻害作用は生じない。 (4) This connexion to supply the combustion air, so what also supplied swirl flow can be generated to perform, by what is furnace swirling flow promotes the inhibitory effect does not occur.

(5) 二次燃焼炉の中間部に複数の燃焼用空気の供給口を適宜配設可能であつて、それらを、必要に応じて補助バーナーを併設する該炉内の昇温手段としているので、該中間部の設計に対応した該炉内雰囲気の適温の安定化が行ない得る。 (5) the supply port of the plurality of combustion air in the middle portion of the secondary combustion furnace shall apply appropriately disposed possible, they, since the heating means in the furnace features an auxiliary burner as required , stabilization of the appropriate temperature furnace in an atmosphere corresponding to the design of the intermediate portion can perform.

(6) 二次燃焼炉が傾斜していることによつて(適度な傾斜度を与えることによつて)、溶融スラグの性状に対応して、その排出に有効に対処可能である。 (6) Yotsute that the secondary combustion furnace is inclined (Yotsute to give an appropriate inclination), corresponding to the properties of the molten slag, it is effectively possible address the discharge. また、二次燃焼炉の熱反応領域と炉排出側を、下方に逆U字状開口を有する邪魔板で仕切るものなので、溶融スラグ流の多少を、その流動性を有するスラグ自身が堰を形成する作用が生じてスラグ排出路への適量移送制御作用が併行して生ずるとともに、これら溶融スラグの作用が旋回流雰囲気での被処理汚泥の滞留時間の邪魔板への影響力を小さくし、事実上、溶融スラグの排出と該滞留時間との関連性阻害要因を除去する作用がある。 Further, a thermal reaction region and the furnace discharge end of the secondary combustion furnace, because they are partitioned by baffle plate having an inverted U-shaped opening downward, some of the molten slag flow, the slug itself weir having the fluidity is formed an appropriate amount transport control action of action occurs to the slag discharge passage occurs in parallel to, the action of these molten slag to reduce the influence of the baffle residence time of the sludge in the swirling flow atmosphere, facts Moreover, an effect of removing the associated obstructive factors between emissions and the residence time of the molten slag.

(7) 二次燃焼炉の溶融スラグ路の排出端を立ダクト状の下部に「溶融スラグ受け」を有するスラグ排出部を配設して、そこへ落下可能に舌端状かつ凹状に形成するスラグ排出路としているので、溶融状スラグの流下距離を最短にし、該炉にならう傾斜はスラグを効果的に案内し、かつ、スラグ排出路以外のその他の炉壁を濡らすことなく、直接、該溶融スラグを「溶融スラグ受け」(図示せず)へ移送できるという作用が生ずる。 (7) by arranging a slag discharge section having a "receiving molten slag" the discharge end of the molten slag path of the secondary combustion furnace in the lower part of the upright duct-like, drop can be formed in a tongue blade shape and concave thereto since the slag discharge passage, the flow-down distance of molten slag in the shortest inclined to follow the furnace is effectively guide the slag and without wetting the other furnace wall other than slag discharging passage, directly, effect that can be transferred to the molten slag to the "receiving molten slag" (not shown) occurs.

〔実施例〕 〔Example〕

以下、第1図ないし第14図に基づいて本発明の一実施例を説明する。 Hereinafter, an embodiment of the present invention will be described with reference to Figure 1 through Figure 14.

第1図は本発明の装置を含む要部のフローシート、第2図は本発明の方法の燃焼用空気供給方法の説明図、第3図は二次燃焼炉内温度の説明図、第4図は一次燃焼炉、二次燃焼炉およびスラグ冷却部の概略断面図、第5 Flowsheet of a main part including the device of Figure 1 according to the present invention, FIG. 2 is an explanatory view of a combustion air supply method of the method of the present invention, FIG. 3 is explanatory diagram of the secondary combustion furnace temperature, 4 Figure primary combustion furnace, a secondary combustion furnace and a schematic cross-sectional view of the slag cooling section, fifth
図は縦形旋回流溶融炉の二次燃焼炉とスラグ冷却期間の排出部のスラグ移動状態を示す説明用断面図、第6図は二次燃焼炉内の邪魔板(バツフルプレート)部の断面図で第4図中のA−A線矢視図、第7図は二次燃焼炉のスラグ排出路の説明用斜視図、第8図(a)はスラグ冷却機の平面図、第8図(b)はその側面断面図、第9図ないし第14図は特許請求の範囲記載の技術的手段の図解説明図で、第9図は第1項、第10図は第2項、第11図は第3項および第4項、第12図(a)、(b)は第5項、第 Figure vertical swirling flow melting furnace secondary combustion furnace and the slag cooling explanatory sectional view showing a slug moving state of the discharge portion of the period, Figure 6 is a baffle plate (cross full plate) in the secondary combustion furnace portion of the cross-section the 4 a-a taken along the line diagram in FIG. in the figure, FIG. 7 is explanatory perspective view of the slag discharge passage of the secondary combustion furnace, Figure 8 (a) is a plan view of the slag cooler, FIG. 8 (b) is a side sectional view, Figure 9 through Figure 14 is a graphical illustration of the technical means described claims, 9 figures paragraph 1, Fig. 10 paragraph 2, 11 FIG third term and the fourth term, Figure 12 (a), (b) the fifth term, the
13図は第6項、第14図は第7項をそれぞれ示す。 13 figure respectively Section 6, Fig. 14 a section 7. 第12図(a)は第11図中のA矢視図、第12図(b)は第12図(a)中のB矢視図、第14図は第4図中のC矢視図である。 Figure 12 (a) is A arrow view in FIG. 11, Fig. 12 (b) is B arrow view in Fig. 12 (a), FIG. 14 is a view seen in the arrow C in FIG. 4 it is.

乾燥機1で乾燥された被熱処理原料(以下「汚泥」という。)Mは常温空気Aを圧送する送風機8によつて二次燃焼炉3より排出され、その排気Dの保有熱によつて熱交換されて400〜600℃に昇温された燃焼用空気Aと混合装置13で混合され、供給口21を介して一次燃料炉2へ供給される。 Be thermally raw material is dried in a dryer 1 (hereinafter referred to as "sludge".) M is discharged from the by connexion secondary combustion furnace 3 to the blower 8 that pumps air at room temperature A, the exhaust D potential heat of the O connexion heat It is mixed with exchanged heated to 400 to 600 ° C. with combustion air a in a mixing device 13, is supplied to the primary fuel furnace 2 through the supply port 21. ここで初期に補助バーナー22の運転で旋回流雰囲気で、燃焼し、1000〜1200℃の汚泥Mと該空気A Here in the swirling flow atmosphere at early operation of the auxiliary burner 22, the combustion and sludge M and the air A of 1000 to 1200 ° C.
とからなる流動混合体Kを生成したのち、適宜に補助バーナー22は運転休止される。 After generating the fluid mixture K consisting of, appropriate auxiliary burner 22 is operated pause.

ちなみに、混合装置13に該空気Aと混合する汚泥Mは図に記載しない手段によつて原則的に微砕化されたものである。 Incidentally, the sludge M to be mixed with the air A to the mixing device 13 is one had it occurred in principle fine 砕化 the unit not described in FIG. この一次燃焼炉2にあつては、汚泥Mは専ら部分燃焼する。 Shall apply to the primary combustion furnace 2, the sludge M is exclusively partial combustion.

なお、排気Dは空気予熱器(熱交換器)7へ供給する前に浮遊物除去装置6で処理される。 The exhaust D is treated with suspended solid removing device 6 before being fed to the air preheater (heat exchanger) 7. この排気は、1000 This exhaust, 1000
〜1300℃であり、熱交換時にあつても、ほぼ1000℃は確保されている。 1300 was ° C., even shall apply during the heat exchange, is approximately 1000 ° C. is ensured. 燃焼炉の一次炉から二次炉へは、二次炉において旋回流生成可能に前記流動混合体Kが供給される。 To the secondary reactor from a primary reactor of the combustion furnace, the swirl flow can be generated in the fluid mixture K is fed in the secondary reactor. 該二次炉は、第13図に示すように、傾斜度θが水平に対し10〜45゜角に横置され、その上流側は、流動混合体供給口23を含む領域aであり、下流側は邪魔板33の上流側の側面を含む領域cであつて、それら領域aとcとの間に、二次炉の大きさによつて炉軸芯方向に沿う長短に対応して認識可能の領域bが中間部として存在する。 Said secondary furnace, as shown in FIG. 13, slope θ is Yoko置 to 10-45 ° angle to the horizontal, the upstream side is a region a including flow mixture supply port 23, the downstream der region c including the side surface of the upstream side of the side baffle plate 33 connexion, between the regions a and c, recognizable in correspondence with the length along by connexion furnace axis direction to the magnitude of the secondary reactor region b is present as an intermediate portion.
この中間部には、昇温手段として適宜間隔を設けて、炉壁に炉内雰囲気に対し旋回流生成ないし助成可能に配設する補助の燃焼用空気の供給入口31、32および必要に応じて併設する補助バーナーが供給入口31に設けられる。 This intermediate portion, provided appropriate intervals as temperature increase device, the furnace wall in accordance with feed inlet 31, 32 and the need for combustion air of the swirling flow generating to grant can be arranged assist to the furnace atmosphere features to assist burner is provided in the supply inlet 31.
該二次炉の燃焼用空気Aは、前記一次炉への燃焼用空気Aの同一系統Pより分岐されるもので、一次炉への空気供給量と二次炉への空気供給量との比はほぼ50:50とする。 The ratio of the combustion air A of the secondary reactor, the present invention is not branched from the same system P of the combustion air A to the primary reactor, and the air supply amount and the air supply amount to the secondary reactor to the primary reactor and almost 50:50. 二次炉用複数の該供給入口31,32に前記50を25:25に分割供給する(第11図参照)。 Dividing supplying the 50 to 25:25 in the secondary furnace for a plurality of the feed inlets 31, 32 (see FIG. 11). これら配分比は、配分原則を示すもので、ケースバイケースでそれぞれ約±20% These distribution ratios show the allocation rule, about ± each on a case-by-case 20%
の偏差にて調整される。 It is adjusted by the deviation. この空気供給量は、三次空気と原料の流動混合体供給口23に40〜60%、供給入口31、32 The air supply flow rate, the tertiary air and raw material of the fluid mixture supply opening 23 40% to 60%, feed inlet 31, 32
に各20〜30%の割合に配分される。 It is distributed to the ratio of the 20-30% in.

第2図は2つの分割された場合を示しているが、中間部bが長い場合は、供給入口31、32は増加し、必要に応じ、補助バーナーも増加する。 Figure 2 is shows the case where the two division, if the intermediate portion b is long, feed inlet 31, 32 is increased, if necessary, also increases the auxiliary burner. そして、以上の燃焼用空気Aの配分は、温度検知手段及び供給量制御手段(図示せず)により供給酸素量および配分比かつ熱量調整の各手段が調整可能である。 The distribution of more combustion air A, the temperature sensing means and the means for supplying oxygen and distribution ratio and heat controlled by supply amount control means (not shown) is adjustable.

二次燃焼炉においては、一次燃焼炉より供給される流動混合体が常時1350〜1450℃にて燃焼反応が継続するように管理する。 In the secondary combustion furnace, the fluidized mixture is managed to continue the combustion reaction at all times 1350 to 1450 ° C. supplied from the primary combustion furnace. その結果該流動混合体はガスと最終生成物である溶融スラグとに分離する。 As a result the flowable mixture is separated into molten slag is a gas and the final product. 該溶融スラグは該炉体内壁を濡らしながら流下して、漸次下方へ移動する。 The molten slag flows down while wetting the furnace inner wall, gradually move downward.
ここにおいて、溶融スラグ温度は約1450℃前後にあつて流動性を有している。 Here, molten slag temperature has fluidity shall apply to approx 1450 ° C..

二次炉2内で生成した溶融スラグJは邪魔板33を流下して二次炉3の下流端にあつて炉排出部4の内方へほぼ二次炉の内壁が示す円弧と同形状の截片をした舌端状で、かつ、凹状の溶融スラグ排出路34が突出している。 Arc the same shape as indicated by the inner wall of the substantially quadratic furnace resulting molten slag J is flows down the baffle plate 33 to the downstream end of the secondary reactor 3 inwardly of Atsute furnace discharge section 4 in the secondary reactor 2截片 at the tongue blade shape, and a concave slag discharging passage 34 protrudes.
該排出路34まで流下する溶融スラグJはスラグ冷却部5 Molten slag J slag cooling section 5 flowing down to the exhaust Detchi 34
に直接落下し、そこで流動性を冷却によつて失なわれた冷却スラグGは、その冷却速度の調整によつて、スラグ形状が調整され、炉外へ排出される。 Cooling the slag G which dropped directly, where the fluidity was rope by connexion loss to cooling, the Yotsute adjustment of the cooling rate, the slag shape is adjusted, and is discharged out of the furnace. スラグ排出路34の上方、炉排出部4には、溶融スラグJの流動性を保持するための補助バーナー42が配設されて運転可能となつている。 Above the slag discharge passage 34, the furnace discharge section 4, and summer and can be operated is the auxiliary burner 42 is disposed to hold the fluidity of the molten slag J.

スラグ冷却部5には、常温(15℃)の冷却水H 1によつて冷却されるスラグ冷却機18が回転するように設けられ、冷却機18に付着したスラグJはスクレーパー17により脱離し、冷却スラグ出口51より排出する。 The slag cooling section 5, the slag cooler 18 which is by connexion cooled coolant H 1 cold (15 ° C.) is provided so as to rotate, slag J adhering to the cooler 18 is eliminated by a scraper 17, discharged from the cooling slag outlet 51. 排出冷却水 The discharge cooling water
H 2の温度は約80℃である。 Temperature of H 2 is about 80 ° C.. (第4図および第8図(a)、(b)参照) 二次炉3よりの排気は溶融スラグ排出路34に対向する炉排出部4の側壁に設けられた排気出口41から炉外へ排出される。 (Figure 4 and Figure 8 (a), (b) refer) from the exhaust outlet 41 disposed exhaust from the secondary reactor 3 in the side wall of the furnace discharge section 4 facing the molten slag discharge passage 34 to the outside of the furnace It is discharged. 二次炉3の炉体壁に耐圧状に形成した復水加熱ジヤケツト36を形成し、その一端復水入口37より乾燥機1よりの復水F(約90℃以下)を受け入れ、炉体熱を吸熱して、ジヤケツト36他端高温水出口38より高圧高温水(180〜190℃)として取り出す。 The condensate heating Jiyaketsuto 36 formed in a pressure-shaped furnace body wall of the secondary furnace 3 form, receiving condensate F (about 90 ° C. or less) than the dryer 1 from one end condensate inlet 37, the furnace body heat the by absorbing heat, Jiyaketsuto 36 taken out from the other end hot water outlet 38 as a high pressure hot water (180 to 190 ° C.). この高温水はボイラー9へ熱交換器7を経た炉排気Dとともに熱処理され、 The hot water is heat-treated together with the furnace exhaust D having passed through the heat exchanger 7 to the boiler 9,
高圧蒸気とされ、途中減圧弁16によつて一定の適圧としたのち、乾燥機1の加熱源(蒸気温度約140℃)とする。 It is a high-pressure steam, after the middle by the pressure reducing valve 16 connexion certain suitable pressure, a heat source of the dryer 1 (steam temperature of about 140 ° C.).

ちなみに二次炉3の邪魔板33は、炉断面積に対し、20 Incidentally baffle 33 of the secondary reactor 3, to Rodin area, 20
〜40%(平均値25〜30%)の開口比 40% aperture ratio (average 25-30 percent) が与えられ、被熱処理原料が定まれば、一度設定した開口比はその開口比によつて実質上断続して実施して特に問題とはならない。 Is given, if the heat treatment raw material is determined, the opening ratio set once is not particularly a problem performed intermittently by connexion substantially in the opening ratio. また、溶融スラグ排出路34の幅員は該二次炉3の中心より仰角120゜以内で定まる大きさで設けられている。 Also, the width of the molten slag discharge passage 34 is provided in a size determined within the elevation 120 ° from the center of the secondary reactor 3. (第14図参照) また、燃焼用空気供給系、二次炉ジヤケツト排気系、 (See FIG. 14) In addition, the combustion air supply system, the secondary reactor Jiyaketsuto exhaust system,
高圧高温水系など、保温を必要とする装置・配管系には全て充分な保温が施行される。 High pressure high temperature water system, all the devices and piping systems which require thermal insulation sufficient insulation is enforced.

なお、炉外壁ジヤケツトは生成高圧高温水を収容可能な耐圧性構造物で製作される。 Incidentally, furnace shell Jiyaketsuto are made of possible pressure resistance structures housing the production pressure hot water.

図面中、11は原料供給口、12は乾燥原料排出口、13は原料と一次空気の混合装置、14は加熱蒸気供給口、15は復水出口、16は減圧弁、17はスラグ冷却機のスクレーパー、18はスラグ冷却機、19は補助燃料入口、21は一次燃焼炉の原料と空気の供給口、22は一次燃焼炉の補助バーナー、23は一次燃焼炉の三次空気と原料の流動混合体供給口、31は二次燃焼炉の空気供給入口(補助バーナーを併設してもよい。)、32は二次燃焼炉の補助空気入口、 In the drawings, 11 raw material supply port, 12 is dry ingredients outlet 13 mixing device of the raw material and primary air, 14 heat the steam supply port, 15 condensate outlet 16 is pressure reducing valve, 17 of the slag cooler scraper, 18 slag cooler, the supplemental fuel inlet 19, 21 is the primary combustion furnace raw material supply port of the air, the auxiliary burner primary combustion furnace 22, 23 tertiary air and raw material fluid mixture of the primary combustion furnace inlet, 31 an air supply inlet of the secondary combustion furnace (may be features an auxiliary burner.), 32 auxiliary air inlet of the secondary combustion furnace,
33は第6図に示すように、下方に逆U字状開口を有する邪魔板(バツフルプレート、34は第7図に示すように、 33, as shown in FIG. 6, baffle (cross full plate having an inverted U-shaped opening downward, 34 as shown in FIG. 7,
二次燃焼炉の炉底に沿つて炉の下流端に延在する舌端状に、かつ、凹状に形成するスラグ排出路、35は二次燃焼炉の補助空気の分岐装置、36は二次燃焼炉の復水加熱ジヤケツト、37は二次燃焼炉の復水入口、38は高温水出口、4は炉排出部、41は炉排出部の排気出口、42は炉排出部の補助バーナー、51は冷却スラグ出口、6は浮遊物除去装置、7は空気予熱器、8は送風機、9はボイラー、10はスクラバー、Aは燃焼用空気(O 2 )、Bは燃料(油)、Cは汚泥(被熱処理原料)、Dは排気、Eは排出生成高温水(蒸気混り熱水)系統路、Fは復水(系統路)、Gは冷却スラグ、H 1は冷却水、H 2は排出冷却水、 A tongue blade shape extending downstream end of along connexion furnace furnace bottom of the secondary combustion furnace, and slag discharge passage formed in a concave shape, 35 branching device of the auxiliary air in the secondary combustion furnace, 36 secondary condensate heating Jiyaketsuto of the combustion furnace, 37 condensate inlet of the secondary combustion furnace, the hot water outlet 38, 4 furnace discharge section, the exhaust outlet of the furnace discharge section 41, 42 is a furnace discharge section of the auxiliary burner, 51 cooling the slag outlet 6 suspended matter removing device, 7 air preheater, 8 blower, boiler 9, the scrubber 10, A combustion air (O 2), B is the fuel (oil), C is the sludge (thermally treated material), D is the exhaust, E is discharged generating hot water (steam intermingled hot water) system channel, F is condensate (line path), G is cooled slag, H 1 is cooling water, H 2 is discharged Cooling water,
Jは溶融スラグ、K流動混合体、Lは被熱処理原料(汚泥)系統路、Mは乾燥原料系統路、Nは燃焼用空気(常温)系統路、Pは燃焼用空気(予熱済)(保温付)系統路、Qは燃料(油)系統路、Sは加熱蒸気系統路、Tは排気系統路、Uはスラグ(冷却)系統路、Vは冷却水系統路をそれぞれ示す。 J is molten slag, K fluid mixture, L is thermally treated material (sludge) strain path, M is dry raw material system path, N is the combustion air (room temperature) strain path, P is the combustion air (preheated closed) (warmth biasing) line path, Q is fuel (oil) line path, S is heated steam system path, T is the exhaust system path, U is shown slag (cooling) system channel, V is the cooling water system path, respectively.

次に、上述した旋回流溶融炉を実際に運転した場合の結果を、従来例(文献2の旋回流溶融炉)の運転結果とあわせて説明する。 Next, the results obtained by operating the swirling flow melting furnace described above in fact, be described together with the operation results of the conventional example (swirling flow melting furnace literature 2).

一次燃焼炉の補助燃料を定常的に使用しない場合 処理した乾燥下水汚泥の物性及び運転条件は以下の通りである。 Physical properties and operating conditions of the dry sewage sludge treated when not using the auxiliary fuel in the primary combustion furnace constantly is as follows.

乾燥下水汚泥(共通) 水分 1.5% 灰分 35.8% 可燃分 62.7% 総発熱量 3890kcal/kg・乾物 平均粒径 180μm 供給量 120kg/H 補助燃焼用空気供給管数 2(本発明のみ) (二次燃焼炉中間部に設置) Dry sewage sludge (Common) 1.5% moisture ash 35.8% combustibles 62.7% gross calorific value 3890kcal / kg · dry matter average particle size 180μm supply amount 120 kg / H auxiliary combustion air supply pipe number 2 (the present invention only) (secondary combustion installed in the furnace middle portion) 上記の条件で運転した結果を第1表に示す。 The result of the operation in the above conditions are shown in Table 1.

補助燃料を定常的に使用した場合 使用した乾燥下水汚泥の物性及び運転条件は以下の通りである。 Physical properties and operating conditions of the dry sewage sludge used when using auxiliary fuel constantly is as follows.

乾燥下水汚泥(共通) 水分 2.0% 灰分 55.0% 可燃分 42.5% 総発熱量 2900kcal/kg・乾物 平均粒径 180μm 供給量 120Kg/H 補助燃焼用空気供給管数 2 (二次燃焼炉中間部に設置。中間部上手の該空気供給管側に補助バーナー併設) 従来例(文献2)の補助燃焼用空気管数1 Dry sewage sludge (common) installed in water 2.0% ash 55.0% combustibles 42.5% gross calorific value 2900kcal / kg · dry matter average particle size 180μm supply amount 120 kg / H auxiliary combustion air supply pipe Number 2 (secondary combustion furnace middle portion . assisted air supply pipe side of the intermediate portion good burner features) prior art (Reference 2) of the auxiliary combustion air pipe number 1 上記の条件で運転した結果を第2表に示す。 The result of the operation in the above conditions are shown in Table 2.

上記2例から明らかなように、本発明にかかる旋回粒溶融炉によつて効率の良い高負荷燃焼を長時間連続運転することが可能になつた。 As apparent from the above two examples, it is possible to has fallen a long time continuous operation with good high load combustion of by connexion efficiency swivel particle melting furnace according to the present invention.

なお、第3図に温度調節した状態Iと温度調節しない状態IIの炉内位置と温度の関係を上流側a、中間部b、 Incidentally, FIG. 3 to a temperature regulating state I and the temperature adjusted to not state II furnace position and temperature upstream a the relationship, the intermediate portion b,
下流側cの区画、邪魔板33位置の関係において示してある。 Lot downstream c, is shown in the context of the baffle plate 33 position. 状態Iでは温度が安定している。 Temperature in the state I is stable.

〔発明の効果〕 〔Effect of the invention〕

本発明は、前記した構成を有し、かつ操作されるので、以下のような発明の効果を発揮する。 The present invention has the configuration described above, and since it is operated, exerts the effect of the invention as follows.

(1) 廃棄物が一次燃焼炉2に投入する該炉と混合載置13との間で、燃焼用空気Aの保有熱により充分昇温され、該炉内に投入した際の炉内高温雰囲気の阻害要因は少ない。 (1) with the furnace in which waste is introduced into the primary combustion furnace 2 and the mixture placed 13, is sufficiently warm the heat held in the combustion air A, furnace hot atmosphere in which was introduced into the furnace factor of inhibition is less.

(2) 炉壁ジヤケツト36の除熱媒体を高圧高温水に選定したので、該炉体キヤスタブルの温度は、該キヤスタブルの材質を著しく阻害しない一定温度以下に抑えられ、該キヤスタブルの交換頻度は前記従来方式の1/4程度に減じた。 (2) Since the heat removal medium furnace wall Jiyaketsuto 36 were selected high pressure and high temperature water, the temperature of the furnace body Kiyasutaburu is suppressed to a constant temperature below that does not significantly inhibit the material of said Kiyasutaburu, replacement frequency of the Kiyasutaburu is the It was reduced to about 1/4 of the conventional method.

(3) 二次燃焼炉の邪魔板33の開口形状を、下向きU (3) the shape of the opening of the secondary combustion furnace baffle 33, down U
字形とし、溶融スラグのスラグ自身により自己堰形成効果を利用するものとしたので、汚泥の旋回流内の滞留時間との相関を小さくさせた。 And shape, since it is assumed to use the self-sheathing forming effect by the slag itself molten slag was reduced correlation between residence time in the swirling flow of the sludge.

(4) 炉内安定域を燃焼用空気の総合管理しながら補助空気入口とその数を自由に選定し得るので、炉の設計に対応して溶融炉の操作が容易にかつ自動化し易くなつた。 (4) Since the furnace stable region can freely select Comprehensive Management while the auxiliary air inlets and the number of the combustion air, in correspondence with the furnace design and operation easily and automation of the melting furnace prone Natsuta .

(5) 溶融スラグ排出に伴なう排出路の該スラグの冷却による閉塞が決して起らなくなつた。 (5) closed by the cooling of the slag accompanying the discharge passage to the molten slag discharge has ceased never Okoshira.

(6) どの炉に対しても、燃焼用空気の供給を旋回流生成可能に、炉に対し、その接線方向に供給するようにしたので、炉への酸素供給と旋回流の阻害予防とを同時に解決した。 (6) For any furnace, pivotably flow generating the supply of combustion air, to the furnace, since then supplied tangentially, and inhibition preventive oxygen supplied swirling flow to the furnace It was resolved at the same time.

(7) 炉より排熱、炉体の除熱、燃焼用空気の熱転換、乾燥機への熱供給とを、熱媒体の状態変化を適切に綜合的に選択しているので、省エネルギー処理の適切な管理体制を得るとともに該管理体制によつて、媒体の流量、圧力、温度の調節、ひいては、メンテナンスフリーを確保可能とした。 (7) furnace from exhaust heat, the heat removal of the furnace body, the thermal conversion of the combustion air, and a heat supply to the dryer, since the appropriate selection comprehensive manner the state change of the heat medium, the energy-saving process Yotsute to the management system together with obtaining a proper management system, media flow rate, pressure, regulation of temperature, therefore, made it possible ensuring maintenance-free.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

図面は本発明の一実施例を示すもので、第1図は本発明の装置を含む要部のフローシート、第2図は本発明の方法の燃焼用空気供給方法の説明図、第3図は二次燃焼炉内温度の説明図、第4図は一次燃焼炉、二次燃焼炉およびスラグ冷却部の断面図、第5図は縦形旋回流溶融炉の二次燃焼炉とスラグ冷却部間の排出部のスラグ移動状態を示す断面図、第6図は二次燃焼炉の邪魔板(バツフルプレート)部の断面図で第4図中のA−A線矢視図、第7図は二次燃焼炉のスラグ排出炉の説明用斜視図、第8 The drawings show an embodiment of the present invention, a flow sheet of the main part including a device of Figure 1 according to the present invention, FIG. 2 is an explanatory view of a combustion air supply method of the method of the present invention, FIG. 3 illustration of the secondary combustion furnace temperature, Figure 4 is the primary combustion furnace, a secondary combustion furnace and a cross-sectional view of the slag cooling section, between Fig. 5 the secondary combustion furnace of the vertical swirling flow melting furnace and slag cooling section sectional view showing a slug moving state of the discharge portion of FIG. 6 is a-a taken along the line diagram in FIG. 4 a sectional view of the baffle plate (cross full plate) of the secondary combustion furnace, Fig. 7 is explanatory perspective view of a slag discharge furnace secondary combustion furnace, 8
図(a)はスラグ冷却機のスクレーパー部の平面図、第8図(b)はその側面断面図、第9図ないし第14図は特許請求の範囲記載の技術的手段の図解説明図で、第9図は第1項、第10図は第2項、第11図は第3項および第4 Figure (a) is a plan view of the scraper of the slag cooler, FIG. 8 (b) is a side sectional view, Figure 9 through Figure 14 is a graphical illustration of the technical means described claims, Figure 9 is the first term, Fig. 10 paragraph 2, FIG. 11 paragraph 3 and 4
項、第12図は第5項、第13図は第6項、第14図は第7項をそれぞれ示す。 Terms, FIG. 12 paragraph 5, FIG. 13 Section 6, FIG. 14 denotes a paragraph 7. 第12図(a)は第11図中のA矢視図、 Figure 12 (a) is A arrow view in FIG. 11,
第12図(b)は第12図(a)中のB矢視図、第14図は第4図中のC矢視図である。 Figure 12 (b) is B arrow view in Fig. 12 (a), FIG. 14 is a view seen in the arrow C in FIG. 4. 1……乾燥機、2……一次燃焼炉 3……二次燃焼炉、6……浮遊物除去装置 7……空気予熱器、9……ボイラー 13……原料と一次空気の混合装置 14……加熱蒸気供給口 21……原料と一次空気の供給口 22……補助バーナー 23……三次空気と原料の流動混合体供給口 31……補助空気入口、32……補助空気入口 33……邪魔板、34……スラグ排出路 36……復水外部加熱ジヤケツト 38……高温水出口、A……燃焼用空気 C……汚泥(被熱処理原料) D……排気、E……高温水系統路 G……冷却スラグ、J……溶融スラグ K……流動混合体、M……汚泥(乾燥された被熱処理原料) 1 ...... dryer, 2 ...... primary combustion furnace 3 ...... secondary combustion furnace, 6 ...... suspended removing device 7 ...... air preheater, 9 ...... boiler 13 ...... raw material and mixing device of the primary air 14 ... ... heating steam supply port 21 ...... raw material and primary air supply port 22 ...... auxiliary burner 23 ...... tertiary air and raw material of the fluid mixture supply opening 31 ...... auxiliary air inlets of, 32 ...... auxiliary air inlets 33 ...... baffle plate, 34 ...... slag discharge passage 36 ...... condensate external heating Jiyaketsuto 38 ...... hot water outlet, A ...... combustion air C ...... sludge (thermally treated material) D ...... exhaust, E ...... hot water system path G ...... cooled slag, J ...... molten slag K ...... fluid mixture, M ...... sludge (dried thermally treated material was)

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl. 6識別記号 FI F23G 7/00 ZAB F23G 7/00 ZAB 104 104A (72)発明者 久保田 輝二 東京都中央区佃2丁目17番15号 月島機 械株式会社内 (72)発明者 五十嵐 操 東京都中央区佃2丁目17番15号 月島機 械株式会社内 (72)発明者 田中 法親 東京都中央区佃2丁目17番15号 月島機 械株式会社内 (72)発明者 上条 泰彦 東京都中央区佃2丁目17番15号 月島機 械株式会社内 (56)参考文献 特開 昭63−172808(JP,A) 特開 昭58−13916(JP,A) 特開 昭49−116874(JP,A) 特開 昭61−70314(JP,A) 特開 昭56−66613(JP,A) 特開 昭49−98070(JP,A) 実開 昭55−100834(JP,U) (58)調査した分野( ────────────────────────────────────────────────── ─── of the front page continued (51) Int.Cl. 6 identification symbol FI F23G 7/00 ZAB F23G 7/00 ZAB 104 104A (72) inventor Teru Kubota two, Chuo-ku, Tokyo Tsukuda No. 2-chome 17th 15 Tsukishima machinery within Co., Ltd. (72) inventor Misao Igarashi, Chuo-ku, Tokyo Tsukuda 2-chome 17th No. 15 Tsukishima machinery within Co., Ltd. (72) inventor Tanaka Hooya, Chuo-ku, Tokyo Tsukuda 2-chome 17th No. 15 Tsukishima machine械 within Co., Ltd. (72) inventor Yasuhiko Kamijo, Chuo-ku, Tokyo Tsukuda 2-chome 17th No. 15 Tsukishima machinery within Co., Ltd. (56) reference Patent Sho 63-172808 (JP, a) JP Akira 58- 13916 (JP, A) JP Akira 49-116874 (JP, A) JP Akira 61-70314 (JP, A) JP Akira 56-66613 (JP, A) JP Akira 49-98070 (JP, A) JitsuHiraku Akira 55-100834 (JP, U) (58) investigated the field ( Int.Cl. 6 ,DB名) F23G 5/00 F23G 5/32 F23G 5/16 F23G 1/00 F23G 7/00 Int.Cl. 6, DB name) F23G 5/00 F23G 5/32 F23G 5/16 F23G 1/00 F23G 7/00

Claims (5)

    (57)【特許請求の範囲】 (57) [the claims]
  1. 【請求項1】被処理汚泥を乾燥した後,該汚泥を旋回流雰囲気中で高温処理して溶融スラグを生成させ、該溶融スラグを冷却する廃棄物の旋回流溶融方法において、乾燥汚泥を400〜600℃の燃焼用空気に混入した後、旋回流状態にて1000〜1200℃で一次燃焼炉内で一次燃焼させ、 1. A After drying the treated sludge, and high temperature treatment of the sludge in a swirling flow atmosphere to produce a molten slag, the swirling flow melting method of waste to cool the molten slag, the dried sludge 400 after incorporation into to 600 ° C. combustion air, to the primary combustion in the primary combustion furnace at 1000 to 1200 ° C. at swirling flow state,
    その一次燃焼で生成した流動混合体を旋回流状態で、13 The fluid mixture produced in the primary combustion in the swirling flow state, 13
    50〜1450℃の二次燃焼炉内に供給して二次燃焼させするとともに、該二次燃焼炉雰囲気中の上流側から下流側にかけて、燃焼用空気を分散供給可能とする前記流動混合体の昇温手段を配設して、溶融スラグを完全溶融して炉排出部へ移送した後、冷却スラグとして取り出し、燃焼済み排気は、含有する浮遊塵を除去した後、その保有熱を別途に取入れる空気と熱交換して、前記燃焼用空気として、前記一次ないし二次燃焼用の昇温手段用に供給する燃焼用空気分割供給系を有し、前記二次燃焼炉の側壁に配置する復水加熱ジャケットへ前記乾燥の際に発生する約90℃以下の復水を供給して180〜190℃の高温水を得、前記取入れる空気と熱交換した後の排気とともに該高温水をボイラーへ供給し加熱して蒸気とし、該蒸気を適圧に減圧して該乾燥の With 50-1450 to by secondary combustion is supplied to the secondary combustion furnace ° C., from the upstream side of the secondary combustion furnace atmosphere toward the downstream side, of the fluid mixture to be dispersed supplying combustion air by disposing the heating device, after transferring completely melted the molten slag to the furnace discharge section, taken out as a cooling slag, burned exhaust, after removing the floating dust containing, collected the heat retained separately by exchanging heat with air contain, as the combustion air, wherein a primary or combustion air divided supply system for supplying for Atsushi Nobori means for secondary combustion, arranged on the side wall of the secondary combustion furnace condensate about 90 ° C. or less of condensate water generated during the drying to a water heating jacket was supplied to obtain a hot water of 180 to 190 ° C., the high-hot water to the boiler together with the exhaust gas after the incorporation air heat exchanger supply and then heated to the steam of the drying under reduced pressure the gas the evaporated to Teki圧 熱媒体とすることを特徴とする傾斜横置形旋回流溶融方法。 Tilting cross-standing swirling flow melting method characterized in that a heating medium.
  2. 【請求項2】各燃焼用空気は、それらの供給する燃焼用雰囲気に対し旋回流生成可能に供給することを特徴とする特許請求の範囲第1項に記載の傾斜横置形旋回流溶融方法。 Wherein air each combustion tilting cross-standing swirling flow melting method according to paragraph 1 claims, characterized in that the swirling flow can be generated to supply to their supplying combustion atmosphere.
  3. 【請求項3】被処理汚泥を乾燥した後,該汚泥を旋回流雰囲気中で高温処理して溶融スラグを生成させて廃棄物処理する旋回流溶融方法において、旋回流溶融炉の側壁に配置する復水加熱ジャケットへ前記乾燥の際に発生する約90℃以下の復水を供給して180〜190℃の高温水を得、該旋回流溶融炉より排出して、その保有熱を、取入れ空気へ熱交換した後の排気とともに該高温水をボイラーへ供給し加熱して蒸気とし、該蒸気を適圧に減圧して該乾燥の加熱媒体とすることを特徴とする旋回流溶融炉の炉体熱の循環有効利用法。 After drying the wherein the processed sludge, in the swirling flow melting method of treating waste to produce a molten slag and high temperature treating the sludge in the swirling flow atmosphere, arranged on the side wall of the swirling flow melting furnace about 90 ° C. or less of condensate generated to condensate heating jacket during the drying by supplying to obtain hot water of 180 to 190 ° C., and discharged from the revolving circumfluence melting furnace, the potential heat, intake air together with the exhaust after the heat exchange by supplying the high hot water to the boiler heating steam into and vacuum gas the evaporated to Teki圧 swirling flow melting furnace of the furnace body, characterized in that the heating medium of the dried circulation effective usage of heat.
  4. 【請求項4】乾燥機を経た被処理汚泥を、予熱された燃焼用空気とともに供給する一次燃焼炉と該一次燃焼炉を炉体の断面接線方向に沿って連接する二次燃焼炉とで構成する旋回流溶融炉において、二次燃焼炉の上流側を上方に、下流側を下方に、かつ、炉排出部に連接して該炉本体を横置し、該下流側の入口を下方に逆U字状開口を有する邪魔板で仕切るとともに、該上流側に一次燃焼炉を、前記上流側と前記下流側との中間部に昇温手段を連設し、該昇温手段は、燃焼用空気供給口または燃焼用空気供給口を伴なう補助バーナーが配設され、前記乾燥機の復水を前記二次燃焼炉の側壁に配置された復水加熱ジャケットへ供給し加熱された高温水をボイラーへ供給し蒸気として該乾燥機へ循環可能としたこと特徴とする傾斜横置形旋回流溶 The wherein the treated sludge through the drier consists of a secondary combustion furnace for connecting along the primary combustion furnace and the primary combustion furnace is supplied to the cross-section tangential direction of the furnace body together with the preheated combustion air in the swirling flow melting furnace which, above the upstream side of the secondary combustion furnace, the downstream side down, and then Yoko置 the furnace body and connected to the furnace discharge section, opposite the inlet of the downstream side downward together partitioned with baffles having a U-shaped opening, a primary combustion furnace in the upstream side, the heating device is continuously provided in an intermediate portion between the downstream side and the upstream side, 該昇 temperature means, combustion air accompanied auxiliary burner supply port or the combustion air supply opening is arranged, the dryer condensate disposed on a side wall of the secondary combustion furnace is supplied to the condensate heating jacket heated high temperature water tilting cross-standing swirling flow solvent to the steam supplied to the boiler, wherein it was possible recycled to the dryer 炉。 The furnace.
  5. 【請求項5】炉排出部には二次燃焼炉の炉底に沿って該炉の下流端に延在する舌端状に、かつ、凹状に形成するスラグ排出路を有し、該スラグ排出路の排出端の下方にスクレーパーと回転するスラグ冷却機とよりなる冷却部を有し該排出端より落下したスラグを該スラグ冷却機から脱離可能としたこと特徴とする特許請求の範囲第4項に記載の傾斜横置形旋回流溶融炉。 5. A furnace tongue blade shaped extending downstream end of the furnace along the furnace bottom of the secondary combustion furnace to the discharge unit, and has a slag discharge passage for recessed, the slag discharge claims, characterized by a more composed cooling unit was dropped from exhaust Extension end has a slag slag cooler and the rotating scraper below the discharge end of the road to allow desorption from the slag cooler 4 tilting cross-standing swirling flow melting furnace according to claim.
JP18320088A 1988-07-22 1988-07-22 Tilting cross-standing 施回 flow melt method and apparatus Expired - Lifetime JP2769623B2 (en)

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US5020455A (en) * 1990-01-11 1991-06-04 Chiba City & Tsukishima Kikai Kubushiki Kaisha System for treating waste material in a molten state
JP2654736B2 (en) * 1992-05-20 1997-09-17 株式会社荏原製作所 Dried sludge melting furnace apparatus

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US3801082A (en) * 1972-12-29 1974-04-02 Union Carbide Corp Oxygen refuse converter
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JPH02606B2 (en) * 1981-07-20 1990-01-08 Osaka Gas Co Ltd
JPH0219372B2 (en) * 1984-09-11 1990-05-01 Ngk Insulators Ltd
JPH0833190B2 (en) * 1987-01-12 1996-03-29 千葉市 The swirling flow melting furnace

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