JP2005233809A - Vertical furnace - Google Patents

Vertical furnace Download PDF

Info

Publication number
JP2005233809A
JP2005233809A JP2004044179A JP2004044179A JP2005233809A JP 2005233809 A JP2005233809 A JP 2005233809A JP 2004044179 A JP2004044179 A JP 2004044179A JP 2004044179 A JP2004044179 A JP 2004044179A JP 2005233809 A JP2005233809 A JP 2005233809A
Authority
JP
Japan
Prior art keywords
furnace
layer height
cylindrical case
rod
measuring rod
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
JP2004044179A
Other languages
Japanese (ja)
Inventor
Yuichi Yamada
裕市 山田
Hideo Miyazaki
秀夫 宮崎
Shinji Takahashi
眞治 高橋
Fumio Kanenae
文男 金苗
Taisuke Okuda
泰典 奥田
Noriaki Nagamune
範明 長宗
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.)
Aisin Takaoka Co Ltd
Original Assignee
Aisin Takaoka Co Ltd
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 Aisin Takaoka Co Ltd filed Critical Aisin Takaoka Co Ltd
Priority to JP2004044179A priority Critical patent/JP2005233809A/en
Publication of JP2005233809A publication Critical patent/JP2005233809A/en
Pending legal-status Critical Current

Links

Images

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
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

Landscapes

  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Incineration Of Waste (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Blast Furnaces (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vertical furnace, in which the layer height measuring device is installed on the upper part of the vertical furnace so that a layer height measuring range can be widely secured, and in which constituent components of the layer height measuring device are fully durable against even the high-temperature of the upper area in the furnace. <P>SOLUTION: The layer height measuring device is provided with a tubular case 30, projected from the furnace wall 11a of the upper part of the furnace body toward the lower part in the furnace; a roller support 40, disposed in the tubular case 30 and having a plurality of guide rollers 46; and a level measuring bar 50, held in the tubular case 30 by the roller support 40 so as to be capable of moving in the longitudinal direction thereof. The wall parts (31 and 32), constituting the tubular case 30, are provided with an in-case cooling medium communication passage (33 or the like) so that the cooling medium (cooling water) supplied from the outside of the furnace body is made to flow. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、炉内に投入されて堆積した堆積物の高さ(層高という)を測定するための層高測定装置を具備した竪型炉に関し、特に層高測定装置の改良に関するものである。   The present invention relates to a vertical furnace equipped with a layer height measuring device for measuring the height (referred to as layer height) of a deposit deposited in a furnace, and more particularly to improvement of the layer height measuring device. .

例えば廃棄物等を焼却及び溶融するための竪型のガス化溶融炉は、炉内に投入された廃棄物その他の堆積物の層高を測定するための層高測定装置を具備するのが通例である。一般に層高測定装置としては、電磁波を用いる非接触式の測定装置と、炉内に直接挿入する棒や錘を用いる機械式(接触式)の測定装置とが知られている。   For example, a vertical gasification melting furnace for incinerating and melting wastes and the like is usually provided with a layer height measuring device for measuring the layer height of waste and other deposits put in the furnace. It is. In general, as the layer height measuring device, a non-contact type measuring device using electromagnetic waves and a mechanical (contact type) measuring device using a rod or weight inserted directly into a furnace are known.

電磁波を用いる層高測定装置では、例えば特許文献1が示すように、炉上部から炉内に電磁波を発信すると共にその反射波を測定装置で信号処理し、その処理結果から得られた頻度分布の形状や信号強度の変動を解析して、層高を求めている。   In a layer height measuring apparatus using electromagnetic waves, for example, as disclosed in Patent Document 1, electromagnetic waves are transmitted from the upper part of the furnace into the furnace and the reflected waves are signal-processed by the measuring apparatus, and the frequency distribution obtained from the processing result is obtained. The layer height is obtained by analyzing the variation in shape and signal intensity.

しかしながら、ガス化溶融炉の内部は高温高圧であるため、本来の堆積物上端位置(つまり層高の位置)よりも上方に流動層が形成されやすい。流動層では、炉内に投入された原料中の軽量物が舞い上がって激しく流動している。それ故、電磁波を用いた層高測定では、この流動層を堆積物と誤認する可能性があり、本来の堆積物上端位置ではなく流動層の上端位置を層高として誤測定する虞がある。このような流動層に起因する誤測定を回避するという点では、機械式の測定装置の方がより確実性が高いといえる。   However, since the inside of the gasification melting furnace is at high temperature and high pressure, a fluidized bed is likely to be formed above the original deposit upper end position (that is, the position of the bed height). In the fluidized bed, the lightweight materials in the raw material charged into the furnace are soaring and flowing violently. Therefore, in the bed height measurement using electromagnetic waves, there is a possibility that this fluidized bed may be mistaken as a deposit, and there is a risk of erroneous measurement using the upper end position of the fluidized bed as the layer height instead of the original deposit upper end position. In terms of avoiding such erroneous measurement due to the fluidized bed, it can be said that the mechanical measurement device is more reliable.

炉内に直接挿入する棒を用いた機械式の測定装置は、例えば特許文献2に開示されている。特許文献2では、竪型炉本体の高さ方向中程に炉床レベル検出装置が設置され、その炉床レベル検出装置は、炉本体を構成する垂直な炉壁から炉床に向けて斜め下方に出没可能なロッド(レベル測定棒に相当)を備えている。そのロッドの内部に冷却剤通路を形成することで、当該ロッドを高温の炉内に長時間滞留可能としている。   A mechanical measuring device using a rod that is directly inserted into the furnace is disclosed in Patent Document 2, for example. In Patent Document 2, a hearth level detection device is installed in the middle of the vertical direction of the vertical furnace main body, and the hearth level detection device is obliquely downward toward the hearth from a vertical furnace wall constituting the furnace main body. It is equipped with a rod (equivalent to a level measuring rod) that can appear and disappear. By forming a coolant passage inside the rod, the rod can stay in a high temperature furnace for a long time.

しかしながら、特許文献2の炉床レベル検出装置にも以下に述べるような欠点がある。先ず、特許文献2の炉床レベル検出装置は炉本体の高さ方向中程に位置し、ロッドも炉壁の中程から斜め下向きに突出しているため、炉の上部付近にまで廃棄物等を堆積する場合(いわゆる高層運転の場合)には層高測定ができない。つまり、竪型炉における層高測定の範囲又は幅が狭いという欠点がある。   However, the hearth level detection device of Patent Document 2 also has the following drawbacks. First, the hearth level detection device of Patent Document 2 is located in the middle of the furnace body in the height direction, and the rod protrudes obliquely downward from the middle of the furnace wall. When depositing (in the case of so-called high-rise operation), the layer height cannot be measured. That is, there is a drawback that the range or width of the layer height measurement in the vertical furnace is narrow.

竪型炉における炉床レベル検出装置(層高測定装置)の層高測定の範囲又は幅を広く確保するために、当該装置を炉の上部に設置することが考えられる。しかし、炉の上部は最も高温化する領域であるため、たとえ特許文献2のロッドがその内部に冷却剤通路を有する自己冷却式のレベル測定棒として構成されていても、それ単独の高温対策だけでは炉内上部領域の高温度に耐えられない虞がある。特に近年、ダイオキシン対策の一つとして注目されているガス化溶融炉では炉内上部領域の高温化が著しく、単にロッドが自己冷却式であるというだけでは実用に供さない。   In order to ensure a wide range or width of the bed height measurement of the hearth level detection device (bed height measurement device) in the vertical furnace, it is conceivable to install the device in the upper part of the furnace. However, since the upper part of the furnace is the region where the temperature is highest, even if the rod of Patent Document 2 is configured as a self-cooling type level measuring rod having a coolant passage therein, only the countermeasure for the high temperature alone is provided. Then, there is a possibility that it cannot withstand the high temperature in the upper region of the furnace. In particular, in a gasification melting furnace that has been attracting attention as one of the countermeasures for dioxins in recent years, the temperature in the upper region of the furnace is extremely high, and it cannot be put into practical use simply because the rod is self-cooling.

更に、特許文献2のロッドの先端は普通に丸みを帯びた形状に形成され、ロッドはその先端から後端までほぼ均一な太さの棒として構成されているに過ぎず、ロッド先端の接触面積はロッドの中央部及び後端における横断面積とさほど変わらない。このため、ロッドを斜め下方に下ろしていったときに、例えば紙くずや自動車廃材(ASR)によるフラフ状の堆積物の中に抵抗なくのめり込み(つまり堆積物を貫通してしまい)、本来の層高位置を通り越して実際よりも低い位置を層高として誤測定する虞がある。   Furthermore, the tip of the rod of Patent Document 2 is normally formed in a rounded shape, and the rod is merely configured as a rod having a substantially uniform thickness from the tip to the rear end. Is not much different from the cross-sectional area at the center and rear end of the rod. For this reason, when the rod is lowered diagonally downward, for example, it slips into the fluffy deposit caused by, for example, waste paper or automobile scrap (ASR) without resistance (that is, penetrates the deposit), and the original layer height There is a possibility that a position lower than the actual position passing through the position may be erroneously measured as the layer height.

特許第3235427号公報(特許請求の範囲)Japanese Patent No. 3235427 (Claims) 実公平1−25879号公報(第1図及び実施例)Japanese Utility Model Publication No. 1-28797 (FIG. 1 and Examples)

本発明の目的は、層高測定装置を竪型炉の上部に設置して層高測定範囲を広く確保できると共に、層高測定装置の構成要素が炉内上部領域の高温度にも十分に耐えることができる竪型炉を提供することにある。また、炉内堆積物の層高を正確に測定することができる竪型炉を提供することにある。   The object of the present invention is to install a bed height measuring device on the top of a vertical furnace to ensure a wide bed height measuring range, and the components of the bed height measuring device can sufficiently withstand the high temperature in the upper region of the furnace. It is to provide a vertical furnace that can be used. Another object of the present invention is to provide a vertical furnace capable of accurately measuring the layer height of the deposits in the furnace.

請求項1の発明は、炉内堆積物の層高を測定するための層高測定装置を具備した竪型の炉であって、前記層高測定装置は、a.炉本体上部の炉壁から炉内下方に向けて突設された筒状のケースと、b.前記筒状ケース内にその長手方向に移動可能に保持されたレベル測定棒と、c.前記筒状ケースを構成する壁部に設けられた、炉本体の外から供給される冷媒を流通させるためのケース内冷媒流通路とを少なくとも備えることを特徴とする竪型炉である。   The invention of claim 1 is a vertical furnace equipped with a layer height measuring device for measuring the layer height of deposits in the furnace, the layer height measuring device comprising: a. A cylindrical case protruding from the furnace wall at the top of the furnace body toward the inside of the furnace; b. A level measuring rod held in the cylindrical case so as to be movable in its longitudinal direction; c. A vertical furnace comprising at least a refrigerant flow passage in the case for circulating a refrigerant supplied from outside the furnace main body, provided in a wall portion constituting the cylindrical case.

請求項1によれば、筒状ケースは、炉本体上部の炉壁から炉内下方に向けて突設されると共にその内部に収められたレベル測定棒を当該ケースの長手方向に移動可能に保持することで、炉内でのレベル測定棒の移動をガイドするガイド部材として機能する。この筒状ケースが炉本体上部に設置されていること、及び、炉内に突出した筒状ケースでレベル測定棒を保持することによってレベル測定棒の長尺化が容易であることのために、レベル測定棒は炉の上部から下部までの広範囲にわたって移動可能となる。従って、層高測定の範囲が従来よりも広く確保され、この竪型炉は低層運転のみならず高層運転にも対応可能となる。また、筒状ケースを構成する壁部内には炉本体の外から供給される冷媒を流通させるためのケース内冷媒流通路が設定されているため、当該筒状ケースは一種の自己冷却式ケース(ウォータジャケットの類)としても機能する。ケース内冷媒流通路に冷媒(例えば冷却水)を流通させることで、筒状ケース内に支持されたレベル測定棒は、炉内部の高温雰囲気から守られ、炉内上部領域の高温度にも十分に耐えることが可能となる。   According to the first aspect, the cylindrical case projects from the furnace wall at the top of the furnace body toward the lower part in the furnace and holds the level measuring rod accommodated therein so as to be movable in the longitudinal direction of the case. By doing so, it functions as a guide member for guiding the movement of the level measuring rod in the furnace. Because this cylindrical case is installed at the top of the furnace body, and the level measuring rod can be easily lengthened by holding the level measuring rod with the cylindrical case protruding into the furnace, The level measuring rod can move over a wide range from the top to the bottom of the furnace. Therefore, the range of the bed height measurement is secured wider than before, and this vertical furnace can cope with not only the low-rise operation but also the high-rise operation. In addition, since the in-case refrigerant flow passage for circulating the refrigerant supplied from the outside of the furnace body is set in the wall portion constituting the cylindrical case, the cylindrical case is a kind of self-cooling case ( It also functions as a water jacket). By circulating a refrigerant (for example, cooling water) through the refrigerant flow passage in the case, the level measuring rod supported in the cylindrical case is protected from the high temperature atmosphere inside the furnace and is sufficient for the high temperature in the upper area of the furnace. It becomes possible to endure.

請求項2の発明は、請求項1に記載の竪型炉において、前記層高測定装置は更に、d.前記レベル測定棒の内部に設けられた、炉本体の外から供給される冷媒を流通させるための測定棒内冷媒流通路を備えることを特徴とする。   According to a second aspect of the present invention, there is provided a vertical furnace according to the first aspect, wherein the layer height measuring device further includes d. A refrigerant flow passage in the measurement rod is provided inside the level measurement rod for circulating the refrigerant supplied from the outside of the furnace body.

請求項2によれば、レベル測定棒の内部に炉本体の外から供給される冷媒を流通させるための測定棒内冷媒流通路が設定され、レベル測定棒自体が自己冷却式となっている。このため、前記筒状ケースが自己冷却式になっていることとの相乗効果により、レベル測定棒の高温耐性が更に高められる。   According to the second aspect, the refrigerant flow passage in the measurement rod for circulating the refrigerant supplied from the outside of the furnace body is set inside the level measurement rod, and the level measurement rod itself is of a self-cooling type. For this reason, the high temperature tolerance of the level measuring rod is further enhanced by a synergistic effect with the self-cooling of the cylindrical case.

請求項3の発明は、請求項1又は2に記載の竪型炉において、前記層高測定装置は更に、e.前記筒状ケース内に配置されると共に、前記レベル測定棒を前記筒状ケース内にその長手方向に沿って直線的に移動可能に保持するための複数のガイドローラを具備したローラ支持体を備えることを特徴とする。   According to a third aspect of the present invention, in the vertical furnace according to the first or second aspect, the layer height measuring device further includes e. A roller support body is provided in the cylindrical case and includes a plurality of guide rollers for holding the level measuring rod in the cylindrical case so as to be linearly movable along the longitudinal direction thereof. It is characterized by that.

請求項3によれば、筒状ケース内には、複数のガイドローラを具備するローラ支持体が配置され、そのローラ支持体の複数のガイドローラにより、レベル測定棒を筒状ケース内にその長手方向に沿って直線的に移動可能に保持している。このように、筒状ケース内におけるレベル測定棒の保持は専らローラ支持体によって担保されるため、筒状ケースの壁部内にケース内冷媒流通路を設定することが容易になる。また、複数のガイドローラによってレベル測定棒を保持する構造であるため、レベル測定棒が長尺化してもそれを安定保持でき、しかもレベル測定棒の円滑な昇降動作を十分に確保できる。   According to the third aspect of the present invention, a roller support having a plurality of guide rollers is disposed in the cylindrical case, and the level measuring rod is inserted into the cylindrical case by the plurality of guide rollers of the roller support. It is held so as to be linearly movable along the direction. As described above, since the holding of the level measuring rod in the cylindrical case is exclusively secured by the roller support, it is easy to set the in-case refrigerant flow passage in the wall of the cylindrical case. In addition, since the level measuring rod is held by a plurality of guide rollers, the level measuring rod can be stably held even when the level measuring rod is elongated, and the smooth raising and lowering operation of the level measuring rod can be sufficiently secured.

請求項4の発明は、請求項1〜3のいずれかに記載の竪型炉において、前記層高測定装置は更に、f.炉本体の外に設けられると共に、前記レベル測定棒と作動連結されてそのレベル測定棒の移動距離に基づいて炉内堆積物の層高を測定する測長機構を備えることを特徴とする。   According to a fourth aspect of the present invention, in the vertical furnace according to any one of the first to third aspects, the layer height measuring device further includes f. A length measuring mechanism is provided outside the furnace main body and is operatively connected to the level measuring rod to measure the layer height of the deposit in the furnace based on the moving distance of the level measuring rod.

請求項4によれば、レベル測定棒は炉本体の外に設けられた測長機構と作動連結されている。層高測定時には、レベル測定棒が前記筒状ケースに沿って炉本体上部から下方に向けて移動される。その際、測長機構は、レベル測定棒の先端(下端)が炉内堆積物の上面に到達するまでのレベル測定棒の移動距離を検知し、それに基づいて炉内堆積物の層高を測定することができる。なお、測長機構は炉本体の外に(より好ましくは炉本体より離れて)設けられているため、炉からの熱によって故障する等の悪影響を受けず、又、炉本体を冷却することなく測長機構だけを独自に保守、点検又は修理可能となる。   According to the fourth aspect, the level measuring rod is operatively connected to a length measuring mechanism provided outside the furnace body. At the time of measuring the layer height, the level measuring rod is moved downward from the furnace main body along the cylindrical case. At that time, the length measuring mechanism detects the moving distance of the level measuring rod until the tip (lower end) of the level measuring rod reaches the upper surface of the deposit in the furnace, and measures the layer height of the deposit in the furnace based on it. can do. In addition, since the length measuring mechanism is provided outside the furnace body (more preferably, away from the furnace body), there is no adverse effect such as failure due to heat from the furnace, and without cooling the furnace body. Only the length measuring mechanism can be independently maintained, inspected or repaired.

請求項5の発明は、請求項1〜4のいずれかに記載の竪型炉において、前記レベル測定棒の先端には、その測定棒の本体部における横断面積よりも大きな面積を有する平板状接触部が設けられていることを特徴とする。   According to a fifth aspect of the present invention, in the vertical furnace according to any one of the first to fourth aspects, the tip of the level measuring rod has a flat contact having an area larger than a cross-sectional area in the main body of the measuring rod. A portion is provided.

請求項5によれば、レベル測定棒の先端(下端)は、比較的大面積の平板状接触部として構成されているため、層高測定時に、堆積物層を貫通することなくその上端を層高位置として正確に把握することができる。   According to the fifth aspect, since the tip (lower end) of the level measuring rod is configured as a flat contact portion having a relatively large area, the upper end of the level measuring rod is layered without penetrating the deposit layer when measuring the layer height. It can be accurately grasped as a high position.

各請求項に記載の竪型炉によれば、層高測定装置を竪型炉の上部に設置して層高測定範囲を広く確保できると共に、層高測定装置の構成要素が炉内上部領域の高温度にも十分に耐えることができる。また、層高測定装置は、レベル測定棒を利用した機械式の測定装置であるので、炉内に形成された流動層に起因する誤検出を回避しながら、炉内堆積物の層高を正確に測定することができる。   According to the vertical furnace described in each claim, the bed height measuring device can be installed on the top of the vertical furnace to ensure a wide bed height measuring range, and the components of the bed height measuring device are Can sufficiently withstand high temperatures. In addition, since the bed height measuring device is a mechanical measuring device using a level measuring rod, the bed height of the deposits in the furnace is accurately measured while avoiding false detection due to the fluidized bed formed in the furnace. Can be measured.

以下、本発明を自動車廃材(ASR)の焼却及び溶融処理用のガス化溶融炉に具体化した一実施形態を図面を参照しつつ説明する。   Hereinafter, an embodiment in which the present invention is embodied in a gasification melting furnace for incineration and melting treatment of automobile scrap (ASR) will be described with reference to the drawings.

図1に示すように、ガス化溶融炉は、竪型の炉本体11と、その炉本体の下半部炉壁に設けられた複数の羽口12と、炉本体の上部に設けられた投入口13と、層高測定装置20とを少なくとも備えている。炉本体11は、垂直方向に所定の深さを有する竪型の耐熱容器である。羽口12は、炉内に酸素を含む空気を吹き込む一種のノズルである。投入口13は、その上部に配設されたホッパー14から投下される原料等(処理対象物及び副原料としての燃料)を炉内に導くための原料等導入路である。   As shown in FIG. 1, the gasification melting furnace includes a vertical furnace main body 11, a plurality of tuyere 12 provided in the lower half furnace wall of the furnace main body, and an input provided in the upper part of the furnace main body. The mouth 13 and the layer height measuring device 20 are provided at least. The furnace body 11 is a vertical heat-resistant container having a predetermined depth in the vertical direction. The tuyere 12 is a kind of nozzle that blows air containing oxygen into the furnace. The inlet 13 is a raw material introduction path for introducing raw materials and the like (fuel to be treated and fuel as a secondary raw material) dropped from a hopper 14 disposed in the upper portion thereof into the furnace.

層高測定装置20は、炉本体11の上部で且つ前記投入口13の隣に設けられたレベル検出機構21と、炉本体11の外に設けられた測長機構22とを備え、レベル検出機構21と測長機構22とはワイヤWを介して作動連結されている。そして図3に示すように、層高測定装置のレベル検出機構21は、筒状のケース30と、その筒状ケース30内に挿入配置されるローラ支持体40と、そのローラ支持体40によって直線移動可能に支持されたレベル測定棒50とから構成されている。   The bed height measuring device 20 includes a level detection mechanism 21 provided at the upper part of the furnace body 11 and next to the charging port 13, and a length measurement mechanism 22 provided outside the furnace body 11. 21 and the length measuring mechanism 22 are operatively connected via a wire W. As shown in FIG. 3, the level detection mechanism 21 of the layer height measuring device includes a cylindrical case 30, a roller support 40 inserted and disposed in the cylindrical case 30, and a straight line formed by the roller support 40. The level measuring rod 50 is supported so as to be movable.

図4に示すように、筒状ケース30は、相対的に大径で且つ長尺な外筒31の中に相対的に小径で且つ長尺な内筒32を配置してなる二重筒構造をなし、外筒31及び内筒32によって、内部に中空な隙間領域33が確保された筒状ケース30の壁部が構成されている。内筒32の下端部(先端部)は開口しているが、外筒31の下端部(先端部)であって内筒下端部との間の環状部は環状封止板34によって閉塞されている。同様に、内筒32の上端部(基端部)は開口しているが、外筒31の上端部(基端部)であって内筒上端部との間の環状部は第1のフランジ材35によって閉塞されている。また、外筒31の上端部付近には左右一対の導管36が連結されている。更に、前記隙間領域33には、外筒31及び内筒32の長手方向に延びる一対の間仕切り壁33a(図4には破線にて一つだけ図示)が設けられており、それら一対の間仕切り壁33aによって前記隙間領域33が左右に二分割されている。但し、各間仕切り壁33aの長さは外筒31及び内筒32の長さよりも短く設定されており、隙間領域33の下端位置において、外筒31又は内筒32と間仕切り壁33aとの全長差h(本例ではh=50mm)に相当する長さの連通口33bが確保されている。   As shown in FIG. 4, the cylindrical case 30 has a double cylinder structure in which a relatively small diameter and long inner cylinder 32 is disposed in a relatively large diameter and long outer cylinder 31. The outer cylinder 31 and the inner cylinder 32 constitute a wall portion of the cylindrical case 30 in which a hollow gap region 33 is secured. The lower end portion (tip portion) of the inner cylinder 32 is open, but the annular portion between the lower end portion (tip portion) of the outer cylinder 31 and the inner cylinder lower end portion is closed by the annular sealing plate 34. Yes. Similarly, the upper end portion (base end portion) of the inner cylinder 32 is open, but the annular portion between the upper end portion (base end portion) of the outer cylinder 31 and the inner cylinder upper end portion is the first flange. It is blocked by the material 35. A pair of left and right conduits 36 are connected near the upper end of the outer cylinder 31. Further, the gap region 33 is provided with a pair of partition walls 33a (only one is shown by a broken line in FIG. 4) extending in the longitudinal direction of the outer cylinder 31 and the inner cylinder 32, and the pair of partition walls. The gap region 33 is divided into right and left parts by 33a. However, the length of each partition wall 33a is set shorter than the lengths of the outer cylinder 31 and the inner cylinder 32, and the total length difference between the outer cylinder 31 or the inner cylinder 32 and the partition wall 33a at the lower end position of the gap region 33. A communication port 33b having a length corresponding to h (h = 50 mm in this example) is secured.

そして、外筒31と内筒32との間に確保された隙間領域33は、前記一対の導管36を介して炉本体11の外に設置された冷却水循環ポンプPとつながっている。つまり筒状ケース30には、右側の導管36、両間仕切り壁33aの右側に位置する隙間領域33、連通口33b、両間仕切り壁33aの左側に位置する隙間領域33および左側の導管36からなるケース内冷媒流通路が設定されており、この筒状ケース30はいわばウォータジャケットの役割を果たす。冷却水循環ポンプPの作動時、ポンプPからの冷却水は、例えば右側の導管36から隙間領域33の右側上部に進入し、両間仕切り壁33aに沿って隙間領域33の右側下部に達した後、連通口33bを経て隙間領域33の左側下部に入り、再び両間仕切り壁33aに沿って隙間領域33の左側上部に達した後、左側の導管36からポンプPに戻される。このように、隙間領域33に間仕切り壁33aが配設されたことで、縦に長い筒状ケース壁部(31,32)の上端から下端に到るまで満遍なく冷却水が行き渡り、しかもその壁部内を冷却水が滞りなく円滑に循環する。   A gap region 33 secured between the outer cylinder 31 and the inner cylinder 32 is connected to a cooling water circulation pump P installed outside the furnace body 11 through the pair of conduits 36. That is, the cylindrical case 30 includes a right conduit 36, a gap region 33 located on the right side of the partition walls 33a, a communication port 33b, a gap region 33 located on the left side of the partition walls 33a, and a left conduit 36. An inner refrigerant flow passage is set, and the cylindrical case 30 functions as a water jacket. During the operation of the cooling water circulation pump P, the cooling water from the pump P enters the upper right side of the gap region 33 from, for example, the right conduit 36, and reaches the lower right side of the gap region 33 along the partition wall 33a. After entering the lower left portion of the gap region 33 through the communication port 33b and again reaching the upper left portion of the gap region 33 along both the partition walls 33a, it is returned to the pump P from the left conduit 36. As described above, since the partition wall 33a is disposed in the gap region 33, the cooling water is evenly distributed from the upper end to the lower end of the vertically long cylindrical case wall portions (31, 32), and in the wall portion. The cooling water circulates smoothly without stagnation.

なお、第1フランジ材35は、筒状ケースの内筒32内にローラ支持体40を位置決め及び固定するための部位として機能する。第1フランジ材35には、複数のボルト挿通孔35aが形成されている。また、筒状ケースの外筒31の周囲には第2のフランジ材37が固着されている。この第2フランジ材37は、当該筒状ケース30を含む層高測定装置のレベル検出機構21を炉本体上部の炉壁11aに固定することに関与する。第2フランジ材37にも、複数のボルト挿通孔37aが形成されている。   The first flange member 35 functions as a part for positioning and fixing the roller support 40 in the inner cylinder 32 of the cylindrical case. The first flange member 35 is formed with a plurality of bolt insertion holes 35a. A second flange member 37 is fixed around the outer cylinder 31 of the cylindrical case. The second flange member 37 is involved in fixing the level detection mechanism 21 of the layer height measuring device including the cylindrical case 30 to the furnace wall 11a at the top of the furnace body. The second flange member 37 is also formed with a plurality of bolt insertion holes 37a.

図5〜図7に示すように、ローラ支持体40は、その上端部を構成する大円盤部41と、その大円盤部41の下面側から下方に延びる一対の支持板42と、前記大円盤部41の上面側に設けられたシール収納筒43と、そのシール収納筒43の上端部に設けられた小円盤部44とを少なくとも備えている。   As shown in FIGS. 5 to 7, the roller support 40 includes a large disk part 41 constituting an upper end part thereof, a pair of support plates 42 extending downward from the lower surface side of the large disk part 41, and the large disk. At least a seal storage cylinder 43 provided on the upper surface side of the portion 41 and a small disk part 44 provided at the upper end of the seal storage cylinder 43 are provided.

大円盤部41は筒状ケース30の第1フランジ材35とほぼ同じ大きさに形成され、第1フランジ材35の上面に対して大円盤部41の下面を接合可能となっている(図3参照)。大円盤部41にはその中央に貫通孔41aが形成されると共に、外周部には第1フランジ材のボルト挿通孔35aと対応する複数のボルト挿通孔41bが形成されている(図5及び図7参照)。   The large disk portion 41 is formed to be approximately the same size as the first flange member 35 of the cylindrical case 30, and the lower surface of the large disk portion 41 can be joined to the upper surface of the first flange member 35 (FIG. 3). reference). A through hole 41a is formed at the center of the large disk portion 41, and a plurality of bolt insertion holes 41b corresponding to the bolt insertion holes 35a of the first flange material are formed at the outer peripheral portion (FIGS. 5 and 5). 7).

図5及び図7に示すように、大円盤部41の下面から突設された二つの支持板42は、互いに所定間隔を隔てて平行に延びている。二つの平行な支持板42間には、それぞれが中央に貫通孔45aを有する三つの連結支持片45が介装され、これらの連結支持片45は二つの支持板42を都合三箇所で連結している。最も下方に位置する連結支持片45は、二つの支持板42の下端部(先端部)間を連結する。図5〜図7には筒状ケース30の内筒32を二点鎖線で示す。これらの図からわかるように、二つの支持板42及び三つの連結支持片45を一体化した組立体(42,45)は、筒状ケースの内筒32内に完全収容可能であると共に、各連結支持片45が内筒32の内壁面に対しその直径方向に橋渡しするように当接することで、前記組立体が内筒32内に安定保持される。   As shown in FIGS. 5 and 7, the two support plates 42 protruding from the lower surface of the large disk portion 41 extend in parallel at a predetermined interval. Between the two parallel support plates 42, three connection support pieces 45 each having a through hole 45 a in the center are interposed, and these connection support pieces 45 connect the two support plates 42 at three convenient places. ing. The lowermost connection support piece 45 connects the lower end portions (tip portions) of the two support plates 42. 5-7, the inner cylinder 32 of the cylindrical case 30 is shown with a dashed-two dotted line. As can be seen from these drawings, the assembly (42, 45) in which the two support plates 42 and the three connection support pieces 45 are integrated can be completely accommodated in the inner cylinder 32 of the cylindrical case. The connecting support piece 45 abuts against the inner wall surface of the inner cylinder 32 so as to bridge in the diameter direction, whereby the assembly is stably held in the inner cylinder 32.

なお、シール収納筒43、大円盤部の中央貫通孔41a及び各連結支持片の中央貫通孔45aは、ローラ支持体40の中心軸線に沿って配列され、これらに対しては、後記レベル測定棒50の外パイプ51部分が挿通される。   The seal storage cylinder 43, the central through hole 41a of the large disk portion, and the central through hole 45a of each connection support piece are arranged along the central axis of the roller support 40, and for these, a level measuring rod described later 50 portions of the outer pipe 51 are inserted.

図5及び図6に示すように、大円盤部41の近傍(ローラ支持体40の上端部近傍)には一対のガイドローラ46が設けられると共に、最下方の連結支持片45の近傍(ローラ支持体40の下端部近傍)にも同じく一対のガイドローラ46が設けられている。つまりローラ支持体40は合計四つのガイドローラ46を具備する。図6からわかるように、一対のガイドローラ46の各々は、前記二つの支持板42間においてボルト47及びナット48により回転可能に支持されている。各ガイドローラ46の外周部は谷状に窪んだ形に形成されており、それがために、隣り合う二つのガイドローラ46間には後記レベル測定棒50の外パイプ51部分を挟持可能となっている。   As shown in FIGS. 5 and 6, a pair of guide rollers 46 is provided in the vicinity of the large disk portion 41 (near the upper end portion of the roller support 40), and in the vicinity of the lowermost connection support piece 45 (roller support). A pair of guide rollers 46 are also provided in the vicinity of the lower end of the body 40. That is, the roller support 40 includes a total of four guide rollers 46. As can be seen from FIG. 6, each of the pair of guide rollers 46 is rotatably supported by a bolt 47 and a nut 48 between the two support plates 42. The outer peripheral portion of each guide roller 46 is formed in a valley-like shape, so that the outer pipe 51 portion of the level measuring rod 50 described later can be sandwiched between two adjacent guide rollers 46. ing.

図8(A)〜(C)に示すように、レベル測定棒50は、相対的に大径な外パイプ51と、その外パイプ51の中に配置された相対的に小径な内パイプ52と、外パイプ51の下端部(先端部)に固着された略円錐形状のカバー材53と、そのカバー材53の下端部及び前記内パイプ52の下端部を閉塞する円形板54とから構成されている。なお、円形板54は、前記カバー材53等の下端部を閉塞するという役割の他に、レベル測定棒50の本体部を構成する外パイプ51の横断面積よりも大きな底面積を有する平板状接触部としての役割をも担う。円形板54の直径は、筒状ケースの内筒32の内直径よりも若干小さく設定されている。   As shown in FIGS. 8A to 8C, the level measuring rod 50 includes an outer pipe 51 having a relatively large diameter, and an inner pipe 52 having a relatively small diameter arranged in the outer pipe 51. A substantially conical cover member 53 fixed to the lower end portion (tip portion) of the outer pipe 51, and a circular plate 54 for closing the lower end portion of the cover member 53 and the lower end portion of the inner pipe 52. Yes. The circular plate 54 has a role of blocking the lower end portion of the cover material 53 and the like, and a flat contact having a bottom area larger than the cross-sectional area of the outer pipe 51 constituting the main body portion of the level measuring rod 50. Also plays a role as a department. The diameter of the circular plate 54 is set slightly smaller than the inner diameter of the inner cylinder 32 of the cylindrical case.

外パイプ51と内パイプ52との間には、両パイプの長手方向に沿った都合三箇所において、それぞれ各パイプの周方向において120度(°)間隔にて三つの連結部55が設けられている(図8(A)及び(B)参照)。これら合計9つの連結部55により、内パイプ52が外パイプ51内に固定保持されて二重パイプ構造が構築されている。外パイプ51、略円錐形カバー材53及び円形板54は、内パイプ52の周囲に横断面環形状の隙間空間56を区画形成するが、内パイプ52の下端部付近においてその周壁に貫通形成された三つの連通孔52aにより、内パイプ52の内部と内パイプ周囲の隙間空間56とが連通されている。   Between the outer pipe 51 and the inner pipe 52, three connecting portions 55 are provided at intervals of 120 degrees (°) in the circumferential direction of each pipe at three convenient locations along the longitudinal direction of both pipes. (See FIGS. 8A and 8B). The inner pipe 52 is fixedly held in the outer pipe 51 by these nine connecting portions 55 in total, and a double pipe structure is constructed. The outer pipe 51, the substantially conical cover member 53, and the circular plate 54 define a clearance space 56 having a ring-shaped cross section around the inner pipe 52, but are formed through the peripheral wall near the lower end of the inner pipe 52. The inside of the inner pipe 52 and the clearance space 56 around the inner pipe communicate with each other through the three communication holes 52a.

そして、内パイプ52の上端部(基端部)の開口は、炉本体11の外に設置された空気圧送機C(例えばエアーコンプレッサ)とつながっている(図8(A)参照)。即ちレベル測定棒50の内部には、内パイプ52、内パイプ下端の連通孔52a、カバー材53及び円形板54と内パイプ52とによって囲まれた隙間空間56、並びに、外パイプ51と内パイプ52とによって囲まれた隙間空間56からなる測定棒内冷媒流通路が設定されている。空気圧送機Cの作動時、そこから強制送風されるエアー(空気)は、内パイプ52の上端開口から内パイプ52内に進入し、内パイプ52の下端部に達した後、前記連通孔52aを経て略円錐形カバー材53内に入り、外パイプ51と内パイプ52との間の隙間空間56を通って外パイプ51の上端開口部に到り、そこから大気中に放出される。このように本実施形態のレベル測定棒50は、空気圧送機Cから供給される気体冷媒たるエアーによりそれ自体を強制冷却(空冷)可能となっている。   And the opening of the upper end part (base end part) of the inner pipe 52 is connected with the pneumatic feeder C (for example, air compressor) installed outside the furnace main body 11 (refer FIG. 8 (A)). That is, inside the level measuring rod 50, there are an inner pipe 52, a communication hole 52a at the lower end of the inner pipe, a cover material 53, a gap space 56 surrounded by the circular plate 54 and the inner pipe 52, and the outer pipe 51 and the inner pipe. A refrigerant flow passage in the measuring rod, which is composed of a gap space 56 surrounded by 52, is set. During operation of the pneumatic feeder C, air (air) forcedly blown from the air enters the inner pipe 52 from the upper end opening of the inner pipe 52 and reaches the lower end portion of the inner pipe 52, and then the communication hole 52a. Then, it enters into the substantially conical cover material 53, passes through the gap space 56 between the outer pipe 51 and the inner pipe 52, reaches the upper end opening of the outer pipe 51, and is released into the atmosphere therefrom. As described above, the level measuring rod 50 according to the present embodiment can be forcibly cooled (air-cooled) by the air as the gaseous refrigerant supplied from the pneumatic feeder C.

図2及び図3に示すように、炉本体上部の炉壁11aに固定される層高測定装置のレベル検出機構21は、前述の筒状ケース30、ローラ支持体40及びレベル測定棒50を組み立てたものである。即ち、筒状ケース30内にその上端側からローラ支持体40を挿入すると共に、筒状ケースの第1フランジ材35にローラ支持体の大円盤部41を当接させて筒状ケース30に対しローラ支持体40を位置決めしている。そして、大円盤部のボルト挿通孔41b及び第1フランジ材のボルト挿通孔35aにボルト及びナット(図示略)を装着することで両者(30,40)を一体化している。また、筒状ケース30内にその下端側からレベル測定棒50を挿入してローラ支持体40のガイドローラ46間にレベル測定棒の外パイプ51を挟持させると共に、レベル測定棒50の上端部をローラ支持体のシール収納筒43及び小円盤部44よりも上方に突出させている。   As shown in FIGS. 2 and 3, the level detection mechanism 21 of the layer height measuring device fixed to the furnace wall 11 a at the top of the furnace body assembles the above-described cylindrical case 30, roller support 40 and level measuring rod 50. It is a thing. That is, the roller support 40 is inserted into the cylindrical case 30 from the upper end side, and the large disc portion 41 of the roller support is brought into contact with the first flange member 35 of the cylindrical case so that the cylindrical case 30 is brought into contact with the cylindrical case 30. The roller support 40 is positioned. The bolts and nuts (not shown) are attached to the bolt insertion hole 41b of the large disk portion and the bolt insertion hole 35a of the first flange member, thereby integrating both (30, 40). Further, the level measuring rod 50 is inserted into the cylindrical case 30 from the lower end side, and the outer pipe 51 of the level measuring rod is sandwiched between the guide rollers 46 of the roller support 40, and the upper end portion of the level measuring rod 50 is The roller support body protrudes upward from the seal housing cylinder 43 and the small disk portion 44.

そして図3に示すように、シール収納筒43の内周面とレベル測定棒の外パイプ51との間に区画形成される環状領域にパッキン又はシール材61を配置すると共に、小円盤部44の上端面側に抜け止めプレート62をボルト及びナット(図示略)で固定し、パッキン又はシール材61をシール収納筒43内に閉じ込めるている。こうして、複数のガイドローラ46を具備したローラ支持体40によってレベル測定棒50を筒状ケース30内にその長手方向に直線的に移動可能に保持してなる層高測定装置のレベル検出機構21が構成されている。   As shown in FIG. 3, a packing or sealing material 61 is disposed in an annular region defined between the inner peripheral surface of the seal housing cylinder 43 and the outer pipe 51 of the level measuring rod. A retaining plate 62 is fixed to the upper end surface side with bolts and nuts (not shown), and the packing or sealing material 61 is confined in the seal housing cylinder 43. In this way, the level detection mechanism 21 of the layer height measuring apparatus, in which the level measuring rod 50 is held in the cylindrical case 30 so as to be linearly movable in the longitudinal direction by the roller support 40 having the plurality of guide rollers 46, is provided. It is configured.

図2に示すように、炉本体上部の炉壁11aには、その炉壁11aを貫通するスリーブ状の装着具63がやや傾斜した状態で設けられている。このスリーブ状装着具63の内径は筒状ケースの外筒31の外径にほぼ等しく、その装着具63の上端部には、前記筒状ケースの第2フランジ材37と対応する位置決めフランジ64が設けられている。位置決めフランジ64には、第2フランジ材のボルト挿通孔37aと対応する複数のボルト挿通孔64aが形成されている。そして、炉本体上部のスリーブ状装着具63に対してレベル検出機構21の筒状ケース30を挿入すると共に、その装着具の位置決めフランジ64に筒状ケースの第2フランジ材37を当接させて装着具63に対しレベル検出機構21を位置決めしている。そして、第2フランジ材のボルト挿通孔37a及び位置決めフランジのボルト挿通孔64aにボルト及びナット(図示略)を装着することで、炉本体上部の炉壁11aに対して層高測定装置のレベル検出機構21を傾斜状態で固定している。なお、レベル検出機構21の傾斜角度は、レベル測定棒50を直線移動させたときに、その下端部が可能な限り炉の奥底に到達し得るように設定されている。   As shown in FIG. 2, a sleeve-like mounting tool 63 penetrating the furnace wall 11a is provided on the furnace wall 11a at the upper part of the furnace body in a slightly inclined state. The inner diameter of the sleeve-like mounting tool 63 is substantially equal to the outer diameter of the outer cylinder 31 of the cylindrical case, and a positioning flange 64 corresponding to the second flange member 37 of the cylindrical case is provided at the upper end portion of the mounting tool 63. Is provided. The positioning flange 64 is formed with a plurality of bolt insertion holes 64a corresponding to the bolt insertion holes 37a of the second flange material. Then, the cylindrical case 30 of the level detection mechanism 21 is inserted into the sleeve-like mounting tool 63 at the top of the furnace body, and the second flange member 37 of the cylindrical case is brought into contact with the positioning flange 64 of the mounting tool. The level detection mechanism 21 is positioned with respect to the mounting tool 63. Then, by installing bolts and nuts (not shown) in the bolt insertion holes 37a of the second flange material and the bolt insertion holes 64a of the positioning flange, the level detection of the layer height measuring device with respect to the furnace wall 11a at the upper part of the furnace body. The mechanism 21 is fixed in an inclined state. The inclination angle of the level detection mechanism 21 is set such that when the level measuring rod 50 is linearly moved, the lower end portion thereof can reach the bottom of the furnace as much as possible.

更に図2に示すように、炉本体11の近傍には複数の支柱からなる櫓状の架台71が設置され、その架台71には、複数の滑車72、張力付与機構73、測長ドラム74、減速機付きモータ75及び回転測定装置76からなる測長機構22が設けられている。他方、レベル測定棒50の外パイプ51の上端には、フック状のジョイント(連結具)65が装着されており、そのジョイント65にはワイヤWの一端が結び付けられている。そして、そのワイヤWの他端は滑車72及び張力付与機構73を経由して測長ドラム74に巻き付けられている。つまり、レベル測定棒50はワイヤWを介して測長機構22に作動連結されながら、櫓状の架台71から吊り下げられている。   Further, as shown in FIG. 2, a bowl-like pedestal 71 composed of a plurality of columns is installed in the vicinity of the furnace body 11, and the pedestal 71 includes a plurality of pulleys 72, a tension applying mechanism 73, a length measuring drum 74, A length measuring mechanism 22 including a motor 75 with a reduction gear and a rotation measuring device 76 is provided. On the other hand, a hook-shaped joint (connector) 65 is attached to the upper end of the outer pipe 51 of the level measuring rod 50, and one end of a wire W is tied to the joint 65. The other end of the wire W is wound around a length measuring drum 74 via a pulley 72 and a tension applying mechanism 73. That is, the level measuring rod 50 is suspended from the bowl-shaped mount 71 while being operatively connected to the length measuring mechanism 22 via the wire W.

張力付与機構73は、測長ドラム74が正逆いずれの方向に回転した場合でもワイヤWが緩まないようワイヤWに所定の張力を付与する。測長ドラム74は減速機付きモータ75に作動連結されており、そのモータ75によって測長ドラム74はワイヤ巻戻し方向(正方向)又はワイヤ巻取り方向(逆方向)に回転される。回転測定装置76は測長ドラム74の回転量及び回転方向を計測する機器であり、測長ドラム74の回転量等に基づいてワイヤWの送り量、ひいてはレベル測定棒50の移動距離を計測する。   The tension applying mechanism 73 applies a predetermined tension to the wire W so that the wire W does not loosen when the length measuring drum 74 rotates in either the forward or reverse direction. The length measuring drum 74 is operatively connected to a motor 75 with a reduction gear, and the motor 75 rotates the length measuring drum 74 in the wire rewinding direction (forward direction) or the wire winding direction (reverse direction). The rotation measuring device 76 is a device for measuring the rotation amount and the rotation direction of the length measuring drum 74, and measures the feed amount of the wire W and consequently the moving distance of the level measuring rod 50 based on the rotation amount of the length measuring drum 74 and the like. .

さて、本実施形態のガス化溶融炉の運転に際しては、投入口13から炉本体11内に原料又は処理対象物としての廃棄物と、副原料としての燃料(例えばコークス)が投入される。廃棄物としては、廃棄自動車に由来するシュレッダーダスト等を例示することができる。自動車のシュレッダーダストは、プラスチック、銅線等の金属分、ガラス分、繊維くず、スポンジ類等からなり、比較的軽量な廃棄物をも含んでいる。このため、ガス化溶融炉での処理時には、炉の底部に廃棄物及び燃料からなる固定層が形成されるほか、その固定層の直上には、廃棄物中の軽量物が舞い上がった状態で流動する流動層が形成される傾向にある(図1参照)。   Now, when the gasification melting furnace of this embodiment is operated, waste as a raw material or a processing object and fuel (for example, coke) as a secondary raw material are charged into the furnace body 11 from the charging port 13. Examples of the waste include shredder dust and the like derived from discarded automobiles. The shredder dust of an automobile is made of metal such as plastic and copper wire, glass, fiber scraps, sponges, and the like, and includes relatively light waste. For this reason, when processing in a gasification melting furnace, a fixed layer consisting of waste and fuel is formed at the bottom of the furnace, and light weight in the waste flows up immediately above the fixed layer. Tends to form a fluidized bed (see FIG. 1).

通常時には図1〜図3に示すように、層高測定装置20のレベル測定棒50はその先端の円形板54が筒状ケース30内に収められる待機位置に待機している。層高を測定する際には、減速機付きモータ75により測長ドラム74がワイヤ巻戻し方向(正方向)に回転され、それに伴ってレベル測定棒50がゆっくりと筒状ケース30に沿って直線的に下降される。すると、レベル測定棒50先端の円形板54が流動層を突き抜けて固定層の上端(即ち層高位置)に達する。レベル測定棒50は、それ自体がある程度の重量を有する剛体であるため、流動層の上端を固定層の上端と誤ることなく流動層を突き抜けることができる。レベル測定棒50先端の円形板54が固定層上端(層高位置)に達すると、接触抵抗が発生し、それがワイヤWを介して測長機構22に伝達される。抵抗発生と同時に測長ドラム74の回転が一瞬停止するので、回転測定装置76は測長ドラム74の回転開始から回転停止までの回転量を計測することができる。その計測結果に基づいて、レベル測定棒50の先端が待機位置から層高位置に到達するまでのレベル測定棒50の移動距離が割り出され、炉内堆積物の層高が測定される。   Normally, as shown in FIG. 1 to FIG. 3, the level measuring rod 50 of the layer height measuring device 20 stands by at a standby position where the circular plate 54 at the tip is accommodated in the cylindrical case 30. When the layer height is measured, the length measuring drum 74 is rotated in the wire rewinding direction (forward direction) by the motor 75 with a speed reducer, and the level measuring rod 50 is slowly straight along the cylindrical case 30 accordingly. Is lowered. Then, the circular plate 54 at the tip of the level measuring rod 50 penetrates the fluidized bed and reaches the upper end of the fixed bed (that is, the bed height position). Since the level measuring rod 50 itself is a rigid body having a certain weight, it can penetrate through the fluidized bed without mistakenly the upper end of the fluidized bed as the upper end of the fixed bed. When the circular plate 54 at the tip of the level measuring rod 50 reaches the upper end (layer height position) of the fixed layer, contact resistance is generated and transmitted to the length measuring mechanism 22 via the wire W. Since the rotation of the length measuring drum 74 is momentarily stopped simultaneously with the generation of resistance, the rotation measuring device 76 can measure the amount of rotation from the rotation start of the length measuring drum 74 to the rotation stop. Based on the measurement result, the moving distance of the level measuring rod 50 until the tip of the level measuring rod 50 reaches the layer height position from the standby position is determined, and the layer height of the deposit in the furnace is measured.

レベル測定棒50先端の円形板54が固定層上端(層高位置)に達した後は、減速機付きモータ75により測長ドラム74がワイヤ巻取り方向(逆方向)に回転され、レベル測定棒50が筒状ケース30内の待機位置に戻される。   After the circular plate 54 at the tip of the level measuring rod 50 reaches the fixed layer upper end (layer height position), the length measuring drum 74 is rotated in the wire winding direction (reverse direction) by the motor 75 with a speed reducer, and the level measuring rod 50 50 is returned to the standby position in the cylindrical case 30.

(実施形態の効果):
本実施形態によれば、筒状ケース30が炉本体上部に設置されていること、及び、炉内に突出した筒状ケース30でレベル測定棒50を保持することによってレベル測定棒50の長尺化が容易であることのために、レベル測定棒50は炉の上部から下部までの広範囲にわたって移動可能となっている。故にこの竪型炉は、層高測定の範囲が従来よりも広く確保され、低層運転のみならず高層運転にも対応することができる。
(Effect of embodiment):
According to the present embodiment, the cylindrical case 30 is installed at the upper part of the furnace main body, and the level measuring rod 50 is held by the cylindrical case 30 protruding into the furnace, whereby the level measuring rod 50 is long. Since leveling is easy, the level measuring rod 50 can be moved over a wide range from the upper part to the lower part of the furnace. Therefore, this vertical furnace has a wider layer height measurement range than before, and can cope with not only low-rise operation but also high-rise operation.

筒状ケース30を構成する壁部(31,32)内には、炉本体11外の冷却水循環ポンプPから供給される冷却水を流通させるためのケース内冷媒流通路(33等)が設定されており、筒状ケース30は一種の自己冷却式ケースとして機能する。このため、筒状ケース30内に保持されたレベル測定棒50等は、炉内部の高温雰囲気から守られ、炉内上部領域の高温度にも十分に耐えることが可能となる。また、レベル測定棒50自体の内部にも、炉本体11外の空気圧送機Cから供給される冷却用エアーを流通させるための測定棒内冷媒流通路(56等)が設定され、レベル測定棒50自体が自己冷却式となっている。このため、筒状ケース30が自己冷却式になっていることとの相乗効果により、レベル測定棒50の高温耐性が飛躍的に高められる。   In the wall portions (31, 32) constituting the cylindrical case 30, an in-case refrigerant flow passage (33 etc.) for circulating the cooling water supplied from the cooling water circulation pump P outside the furnace body 11 is set. The cylindrical case 30 functions as a kind of self-cooling case. For this reason, the level measuring rod 50 or the like held in the cylindrical case 30 is protected from the high temperature atmosphere inside the furnace, and can sufficiently withstand the high temperature in the upper area in the furnace. In addition, a refrigerant flow passage (such as 56) in the measurement rod for circulating the cooling air supplied from the pneumatic feeder C outside the furnace body 11 is also set inside the level measurement rod 50 itself, and the level measurement rod 50 50 itself is a self-cooling type. For this reason, the high temperature resistance of the level measuring rod 50 is dramatically increased by a synergistic effect with the self-cooling of the cylindrical case 30.

筒状ケース30内には、複数のガイドローラ46を具備するローラ支持体40が配置され、そのローラ支持体の複数のガイドローラ46により、レベル測定棒50を筒状ケース50内にその長手方向に沿って直線的に移動可能に保持している。このように、筒状ケース30内におけるレベル測定棒50の保持は専らローラ支持体40によって担保されるため、筒状ケースの壁部(31,32)内にケース内冷媒流通路(33等)を設定することが容易になる。また、複数のガイドローラ46によってレベル測定棒50を保持する構造であるため、レベル測定棒50が長尺化してもそれを安定保持でき、レベル測定棒50の円滑な直線的昇降動作を十分に確保できる。   A roller support 40 having a plurality of guide rollers 46 is arranged in the cylindrical case 30, and the level measuring rod 50 is inserted into the cylindrical case 50 in the longitudinal direction by the plurality of guide rollers 46 of the roller support. It is held so that it can move linearly along. In this way, since the holding of the level measuring rod 50 in the cylindrical case 30 is exclusively secured by the roller support 40, the refrigerant flow passage (33 etc.) in the case is formed in the wall portion (31, 32) of the cylindrical case. It becomes easy to set. Further, since the level measuring rod 50 is held by a plurality of guide rollers 46, the level measuring rod 50 can be stably held even when the length of the level measuring rod 50 is increased, and the smooth linear lifting and lowering operation of the level measuring rod 50 is sufficiently performed. It can be secured.

レベル測定棒50先端の円形板54は比較的大面積の平板状接触部として構成されているため、層高測定時、固定層の上層部を貫通することなく固定層の上端を確実に把握することができる。特に、固定層が紙くずや自動車廃材(ASR)等によるフラフ状の堆積物からなる場合でも、そのフラフ状の堆積物の上面を貫通することなく、その当接位置を正確に把握して正確な層高測定を行うことができる。   Since the circular plate 54 at the tip of the level measuring rod 50 is configured as a relatively large area flat plate-like contact portion, when measuring the layer height, the upper end of the fixed layer can be reliably grasped without penetrating the upper layer portion. be able to. In particular, even when the fixed layer is made of fluffy deposits such as waste paper or automobile scrap (ASR), the contact position can be accurately grasped without penetrating the upper surface of the fluffy deposits and accurate. Layer height measurement can be performed.

本実施形態によれば、測長機構22が炉本体11の外に、炉本体11からやや離れて設けられている。このため、測長機構22は炉からの熱によって故障する等の悪影響を受けることがない。また、炉本体11を冷却することなく測長機構22だけを独自に保守、点検又は修理することができるという利点がある。   According to the present embodiment, the length measuring mechanism 22 is provided outside the furnace body 11 and slightly apart from the furnace body 11. For this reason, the length measuring mechanism 22 is not adversely affected by failure due to heat from the furnace. Further, there is an advantage that only the length measuring mechanism 22 can be independently maintained, inspected or repaired without cooling the furnace body 11.

(変更例):本発明の実施形態を以下のように変更してもよい。
上記実施形態では、レベル測定棒50を空冷式としたが液冷式に変更してもよい。同様に、筒状ケース30を液冷式としたが空冷式に変更してもよい。
(Modification): The embodiment of the present invention may be modified as follows.
In the above embodiment, the level measuring rod 50 is air-cooled, but may be changed to liquid-cooled. Similarly, the cylindrical case 30 is liquid-cooled, but may be changed to air-cooled.

本発明の適用対象は高温ガス化溶融炉に限定されるものではなく、キュポラ等のその他の竪型炉にも適用可能であることは言うまでもない。   Needless to say, the application target of the present invention is not limited to a high-temperature gasification melting furnace, and can also be applied to other vertical furnaces such as a cupola.

一実施形態に従うガス化溶融炉の概略断面図。1 is a schematic sectional view of a gasification melting furnace according to an embodiment. 層高測定装置の測長機構の概要を示す正面図及び側面図。The front view and side view which show the outline | summary of the length measuring mechanism of a layer height measuring apparatus. 層高測定装置の主要部(レベル検出機構)の縦断面図。The longitudinal cross-sectional view of the principal part (level detection mechanism) of a bed height measuring apparatus. 層高測定装置の構成部品である筒状ケースの縦断面図。The longitudinal cross-sectional view of the cylindrical case which is a component of the layer height measuring apparatus. 層高測定装置の構成部品であるローラ支持体の正面図(一部は断面図)。The front view (partly sectional drawing) of the roller support body which is a component of the layer height measuring apparatus. ローラ支持体におけるガイドローラ等の横断面図。The cross-sectional view of the guide roller etc. in a roller support body. ローラ支持体の底面図。The bottom view of a roller support body. レベル測定棒を示し、(A)はその縦断面図、(B)はX−X線での拡大横断面図、(C)はY−Y線での拡大横断面図。The level measurement rod is shown, (A) is a longitudinal sectional view thereof, (B) is an enlarged transverse sectional view taken along line XX, and (C) is an enlarged transverse sectional view taken along line YY.

符号の説明Explanation of symbols

11…炉本体、11a…炉本体上部の炉壁、20…層高測定装置、21…レベル検出機構、22…測長機構、30…筒状のケース、33…隙間領域(ケース内冷媒流通路)、40…ローラ支持体、46…ガイドローラ、50…レベル測定棒、54…円形板(平板状接触部)、56…隙間空間(測定棒内冷媒流通路)、C…空気圧送機、P…冷却水循環ポンプ、W…ワイヤ。   DESCRIPTION OF SYMBOLS 11 ... Furnace main body, 11a ... Furnace wall of furnace main body upper part, 20 ... Layer height measuring apparatus, 21 ... Level detection mechanism, 22 ... Length measuring mechanism, 30 ... Cylindrical case, 33 ... Clearance area | region (Refrigerant flow path in case) ), 40 ... roller support, 46 ... guide roller, 50 ... level measuring rod, 54 ... circular plate (flat contact portion), 56 ... gap space (refrigerant flow path in measuring rod), C ... pneumatic feeder, P ... cooling water circulation pump, W ... wire.

Claims (5)

炉内堆積物の層高を測定するための層高測定装置を具備した竪型の炉であって、
前記層高測定装置は、
a.炉本体上部の炉壁から炉内下方に向けて突設された筒状のケースと、
b.前記筒状ケース内にその長手方向に移動可能に保持されたレベル測定棒と、
c.前記筒状ケースを構成する壁部に設けられた、炉本体の外から供給される冷媒を流通させるためのケース内冷媒流通路と
を少なくとも備えることを特徴とする竪型炉。
A vertical furnace equipped with a layer height measuring device for measuring the layer height of deposits in the furnace,
The layer height measuring device is
a. A cylindrical case projecting from the furnace wall at the top of the furnace body toward the inside of the furnace,
b. A level measuring rod held movably in the longitudinal direction in the cylindrical case;
c. A vertical furnace comprising at least an in-case refrigerant flow passage for circulating a refrigerant supplied from outside the furnace main body, provided in a wall portion constituting the cylindrical case.
前記層高測定装置は更に、
d.前記レベル測定棒の内部に設けられた、炉本体の外から供給される冷媒を流通させるための測定棒内冷媒流通路
を備えることを特徴とする請求項1に記載の竪型炉。
The layer height measuring device further includes
d. 2. The vertical furnace according to claim 1, further comprising a refrigerant flow passage in the measurement rod provided inside the level measurement rod for circulating a refrigerant supplied from outside the furnace main body.
前記層高測定装置は更に、
e.前記筒状ケース内に配置されると共に、前記レベル測定棒を前記筒状ケース内にその長手方向に沿って直線的に移動可能に保持するための複数のガイドローラを具備したローラ支持体
を備えることを特徴とする請求項1又は2に記載の竪型炉。
The layer height measuring device further includes
e. A roller support body is provided in the cylindrical case and includes a plurality of guide rollers for holding the level measuring rod in the cylindrical case so as to be linearly movable along the longitudinal direction thereof. The vertical furnace according to claim 1, wherein the vertical furnace is provided.
前記層高測定装置は更に、
f.炉本体の外に設けられると共に、前記レベル測定棒と作動連結されてそのレベル測定棒の移動距離に基づいて炉内堆積物の層高を測定する測長機構
を備えることを特徴とする請求項1〜3のいずれかに記載の竪型炉。
The layer height measuring device further includes
f. A length measuring mechanism is provided outside the furnace main body, and is operatively connected to the level measuring rod and measures a layer height of the deposit in the furnace based on a moving distance of the level measuring rod. The vertical furnace according to any one of 1 to 3.
前記レベル測定棒の先端には、その測定棒の本体部における横断面積よりも大きな面積を有する平板状接触部が設けられていることを特徴とする請求項1〜4のいずれかに記載の竪型炉。   5. The scissors according to claim 1, wherein a flat plate-like contact portion having an area larger than a transverse area in a main body portion of the measuring rod is provided at a tip of the level measuring rod. Mold furnace.
JP2004044179A 2004-02-20 2004-02-20 Vertical furnace Pending JP2005233809A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004044179A JP2005233809A (en) 2004-02-20 2004-02-20 Vertical furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004044179A JP2005233809A (en) 2004-02-20 2004-02-20 Vertical furnace

Publications (1)

Publication Number Publication Date
JP2005233809A true JP2005233809A (en) 2005-09-02

Family

ID=35016921

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004044179A Pending JP2005233809A (en) 2004-02-20 2004-02-20 Vertical furnace

Country Status (1)

Country Link
JP (1) JP2005233809A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008128717A (en) * 2006-11-17 2008-06-05 Ube Techno Enji Kk Level meter and level measuring system
DE112008002917T5 (en) 2007-10-29 2010-09-23 Hirata Corp. Method for cooling a transport section and a transport device
KR101355150B1 (en) * 2011-09-14 2014-01-27 알스톰 테크놀러지 리미티드 Level detector for measuring foam and aerated slurry level in a wet flue gas desulfurization absorber tower and method for thereof
JP2015197239A (en) * 2014-03-31 2015-11-09 Jfeエンジニアリング株式会社 Device and method for measuring furnace inner layer height
CN105333919A (en) * 2015-12-08 2016-02-17 大连华锐重工集团股份有限公司 Steel chisel inclined inserting type heavy material level meter of industrial furnace

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008128717A (en) * 2006-11-17 2008-06-05 Ube Techno Enji Kk Level meter and level measuring system
DE112008002917T5 (en) 2007-10-29 2010-09-23 Hirata Corp. Method for cooling a transport section and a transport device
US8177050B2 (en) 2007-10-29 2012-05-15 Hirata Corporation Cooling method of carrying section and carrier
KR101355150B1 (en) * 2011-09-14 2014-01-27 알스톰 테크놀러지 리미티드 Level detector for measuring foam and aerated slurry level in a wet flue gas desulfurization absorber tower and method for thereof
US8756992B2 (en) 2011-09-14 2014-06-24 Alstom Technology Ltd Level detector for measuring foam and aerated slurry level in a wet flue gas desulfurization absorber tower
JP2015197239A (en) * 2014-03-31 2015-11-09 Jfeエンジニアリング株式会社 Device and method for measuring furnace inner layer height
CN105333919A (en) * 2015-12-08 2016-02-17 大连华锐重工集团股份有限公司 Steel chisel inclined inserting type heavy material level meter of industrial furnace

Similar Documents

Publication Publication Date Title
KR101999446B1 (en) Pipe inspection method of pipe inspection robot
KR101986427B1 (en) Pipe inspection robot
JP2011164101A (en) Resident measuring system of charging level of blast furnace
EP2663618B1 (en) Gasification reactor and process
RU127878U1 (en) DEVICE FOR MEASURING AT LEAST ONE MEASURABLE VALUE FOR FURNACES, AND ALSO FURNACE
JP2005233809A (en) Vertical furnace
KR20160102346A (en) Economiser, composite boiler and methods of use thereof
KR102172259B1 (en) Examination apparatus for waterwall tube and waterwall tube analysys system having the same
JP5113075B2 (en) In-furnace material detection system for metal production lances
KR102299901B1 (en) Engine parts inspection apparatus and engine parts inspection system
JP5344827B2 (en) Ladle exhaust system and ladle exhaust method
KR101129179B1 (en) An apparatus for centering drop sleeve of charging car
JP2010243122A (en) Clinker removing device
KR100721815B1 (en) Device for real time measuring abrasion volume of stave in stave furnace
JP7087849B2 (en) Concentrator burner inspection hole insertion lid
TW445297B (en) Cooled basket for steel plants
CN218372082U (en) Novel diffusing device for float glass tin bath
JPS61501585A (en) Incinerator equipment
KR101519432B1 (en) Apparatus for measuring level of dust
KR20120053867A (en) Monitoring apparatus for refractories abrasion of electric furnace
KR101694273B1 (en) Splash cover exchange time detection device and detection method
JP2003302287A (en) Temperature measurement device
JP2008223121A (en) Method for repairing furnace wall surface at upper part of blast furnace shaft
KR100402023B1 (en) Operator guidance device for detecting the status of the inside refractory of reactor
KR20040088703A (en) A Microwave Sense Protecting Apparatus for a Insertion Level Measurement of a Hot Furnace