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JP2012102302A - Kiln mouth structure of coke oven - Google Patents

Kiln mouth structure of coke oven
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Publication number
JP2012102302A
JP2012102302AJP2010254366AJP2010254366AJP2012102302AJP 2012102302 AJP2012102302 AJP 2012102302AJP 2010254366 AJP2010254366 AJP 2010254366AJP 2010254366 AJP2010254366 AJP 2010254366AJP 2012102302 AJP2012102302 AJP 2012102302A
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Prior art keywords
furnace
protection
ledge
coke oven
protection ledge
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JP2010254366A
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Japanese (ja)
Inventor
Noriko Kubo
典子 久保
Shunichi Kamezaki
俊一 亀崎
Yoshiaki Kitayama
喜昭 北山
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JFE Steel Corp
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JFE Steel Corp
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Abstract

Translated fromJapanese

【課題】室炉式コークス炉の窯口構造として、操業によるコークス押出負荷や熱負荷の影響下でも、窯口金物に緩みや脱落が生じることを的確に防止できる窯口構造を提供する。
【解決手段】
コの字形状をしたプロテクションレッジ43でヘッドプレート34を挟み込み、少なくともプロテクションレッジ43の一部がヘッドプレート34より炉前面側(炉の手前側)に位置し、ヘッドプレート34より炉前面側(炉の手前側)の位置でプロテクションレッジ43が溶接またはリベットで固定されている。
【選択図】図5
[Problem] To provide a kiln opening structure capable of accurately preventing loosening or falling off of kiln fittings even under the influence of a coke extrusion load or a thermal load due to operation as a kiln opening structure of a chamber type coke oven.
[Solution]
The head plate 34 is sandwiched between U-shaped protection ledges 43. At least a part of the protection ledge 43 is located on the furnace front side (front side of the furnace) from the head plate 34, and the furnace front side (furnace side) from the head plate 34. The protection ledge 43 is fixed by welding or rivets at a position on the front side.
[Selection] Figure 5

Description

Translated fromJapanese

本発明は、コークス炉の炉体レンガを支持する窯口金物が、操業によるコークス押出負荷や熱負荷の影響下でも、緩みや脱落を生じることのない窯口構造に関するものである。  The present invention relates to a kiln structure in which a kiln metal supporting a furnace brick of a coke oven does not loosen or fall off even under the influence of coke extrusion load or heat load due to operation.

室炉式コークス炉(以下、単に「コークス炉」ともいう)の炉前面側の部分断面平面図を図1に示す。図1に示すように、室炉式コークス炉1は多数の燃焼室31と炭化室32とを交互に炉幅方向に配置し構成されている。そして、燃焼室31と炭化室32の炉体レンガ40は各種の金物によって表面を覆われて支持されている。これらの金物は炉体金物11と称されており、炭化室32の窯口10を形成するドアフレーム35、燃焼室31のレンガを押さえるプロテクションレッジ37およびプロテクションプレート38、ヘッドプレート34、フラッシュプレート33、フックボルト36、さらに燃焼室31や炭化室32の上部のレンガ40を押さえる上部ウォールプレート(図示せず)、同じく下部のレンガ40を押さえる下部ウォールプレート(図示せず)などからなっている。上記の炉体金物11の内、窯口10の近傍に配置されている金物(ドアフレーム35、プロテクションレッジ37、プロテクションプレート38、ヘッドプレート34、フラッシュプレート33、フックボルト36等)は窯口金物12と呼ばれている。通常の操業時においては、これらの炉体金物11をバックステー2が支持し、これを炉頂部や炉下部に配置したテンションロッド(図示せず)で締め付けて炉体3を保持している。  FIG. 1 shows a partial cross-sectional plan view of the front side of a chamber-type coke oven (hereinafter also simply referred to as “coke oven”). As shown in FIG. 1, the chamber-type coke oven 1 is configured by arranging a number ofcombustion chambers 31 andcarbonization chambers 32 alternately in the furnace width direction. And thefurnace brick 40 of thecombustion chamber 31 and thecarbonization chamber 32 is covered and supported by various hardware. These hardwares are referred to asfurnace body hardware 11,door frame 35 that forms kiln opening 10 of carbonizingchamber 32,protection ledge 37 that holds bricks incombustion chamber 31,protection plate 38,head plate 34, andflash plate 33. , Ahook bolt 36, an upper wall plate (not shown) for holding thebrick 40 on the upper side of thecombustion chamber 31 and thecarbonization chamber 32, a lower wall plate (not shown) for holding thelower brick 40, and the like. Of the above-mentionedfurnace body hardware 11, hardware (door frame 35,protection ledge 37,protection plate 38,head plate 34,flash plate 33,hook bolt 36, etc.) disposed in the vicinity of thefurnace opening 10 is a furnace mouth hardware. It is called 12. During normal operation, thefurnace body 11 is supported by thebackstay 2 and is fastened by a tension rod (not shown) disposed at the top or bottom of the furnace to hold thefurnace body 3.

ここで、図2に、室炉式コークス炉1の建設当時の健全な状態の窯口構造を示す。図2(a)が平面図であり、図2(b)が側面図(図2(a)のA−A矢視断面図)である。  Here, FIG. 2 shows a structure of the kiln mouth in a healthy state at the time of construction of the chamber furnacetype coke oven 1. 2A is a plan view, and FIG. 2B is a side view (a cross-sectional view taken along the line AA in FIG. 2A).

ただし、室炉式コークス炉1では炭化室32と燃焼室31の部分の高さが8〜10m程度あり、また、この部分のレンガ40は石炭の炭化に必要な1000℃を超える高温を内部に保持するものであるから、炉体金物11の温度も高温となるため、長期間の操業の間に炉体金物11そのものの変形やバックステー2の変形が生じ、炉体金物11(特に、窯口金物12)が脱落し、炉体3の変形が進み、最終的には炉体レンガ40が崩れるという不具合が生じる場合がある。そして、現有するコークス炉1の寿命は40年を越えるものが多くなり、炉体3の変形、炉体レンガ40の損耗、炉体金物11の劣化が増加している。  However, in the chamber furnacetype coke oven 1, the height of thecarbonization chamber 32 and thecombustion chamber 31 is about 8 to 10 m, and thebrick 40 in this portion has a high temperature exceeding 1000 ° C. necessary for carbonization of coal. Since it is held, the temperature of thefurnace hardware 11 also becomes high, so that during the long-term operation, thefurnace hardware 11 itself and thebackstay 2 are deformed, and the furnace hardware 11 (particularly the kiln 11). In some cases, the base 12) falls off, the deformation of thefurnace body 3 proceeds, and finally thefurnace brick 40 collapses. And the lifespan of the existingcoke oven 1 exceeds 40 years, and the deformation of thefurnace body 3, the wear of thefurnace body bricks 40, and the deterioration of thefurnace body hardware 11 are increasing.

しかし、コークス炉1の建設には膨大な費用を必要とするため、コークス炉1の寿命の延長を図ることで費用削減を達成することが指向されている。このため、変形したバックステー2の交換や、緩みや脱落が生じた炉体金物11の補修や交換をすることにより炉体3の健全性を維持するようになってきた。  However, since the construction of thecoke oven 1 requires enormous costs, it is directed to achieve cost reduction by extending the life of thecoke oven 1. For this reason, the soundness of thefurnace body 3 has been maintained by replacing thedeformed backstay 2 or repairing or replacing thefurnace body 11 that has been loosened or dropped off.

コークス炉1の炉体金物11の緩みの多くは、部分的に破損して炭化室32側に張り出してくるもので、さらに悪化すれば炉体金物11が脱落するという問題が生ずる。このような場合、通常、炉体金物11が脱落した部位にモルタルを詰めるような補修を行うが、一時的な対策に過ぎず、状況は徐々に悪化していく。  Most of the looseness of thefurnace body 11 of thecoke oven 1 is partially damaged and protrudes toward thecarbonization chamber 32 side. If the deterioration further deteriorates, there arises a problem that thefurnace body 11 falls off. In such a case, repair is usually performed by filling mortar into the part where thefurnace body 11 has dropped off, but this is only a temporary measure, and the situation gradually deteriorates.

図3に、炉体3が変形し、プロテクションレッジ37が脱落し、モルタル39を詰めて補修を行った窯口構造を示す。図3(a)が平面図であり、図3(b)が側面図(図3(a)のA−A矢視断面図)である。図3では、すべての個所でプロテクションレッジ37が脱落しており、その脱落部分にモルタル39を詰めて補修しているが、多くの場合、部分的にプロテクションレッジ37が脱落しており、プロテクションレッジ37が残存した部分とモルタル39で補修した部分が混在する。  FIG. 3 shows a kiln structure in which thefurnace body 3 is deformed, theprotection ledge 37 is dropped, and themortar 39 is filled and repaired. 3A is a plan view, and FIG. 3B is a side view (a cross-sectional view taken along the line AA in FIG. 3A). In FIG. 3, theprotection ledge 37 has dropped off at all points, and themortar 39 has been repaired by filling the dropout portion. In many cases, however, theprotection ledge 37 has partially dropped off, and the protection ledge 37 A portion where 37 remains and a portion repaired withmortar 39 coexist.

このような炉体3の異常の発生に対し、特許文献1には、バックステー2の交換時に緩んでいた炉体金物11を固定する技術が開示されている。  With respect to the occurrence of such an abnormality of thefurnace body 3,Patent Document 1 discloses a technique for fixing thefurnace body hardware 11 that has been loosened when thebackstay 2 is replaced.

特開2002−3851号公報JP 2002-3851 A

従来、緩みや脱落が生じた炉体金物11の補修や交換を行う際には、バックステー2を外す必要があり、このような補修・交換作業を行うと、炉体全体の締め付け力が低下し、さらに炉体温度の低下を招き、補修・交換作業そのものによる炉体劣化のリスクが伴うという新たな問題が生ずる。また、バックステー2を外す作業は特許文献1に示されているように、非常に大掛かりなものとなり、そのための費用および修理に要する日数の増大という問題がある。また、図3に示したように、炉体全体が変形しているため、新しいバックステー2が上手く取り付けられないといった問題もある。  Conventionally, it is necessary to remove theback stay 2 when repairing or replacing thefurnace body 11 that has been loosened or dropped off. If such repair / replacement work is performed, the tightening force of the entire furnace body decreases. In addition, the temperature of the furnace body is further lowered, and a new problem arises that there is a risk of furnace body deterioration due to the repair and replacement work itself. Moreover, the operation | work which removes thebackstay 2 becomes very big as shown inpatent document 1, and there exists a problem of the increase in the cost for it, and the number of days required for repair. Moreover, as shown in FIG. 3, since the whole furnace body is deform | transforming, there also exists a problem that thenew backstay 2 cannot be attached successfully.

本発明は、上記のような事情に鑑みてなされたものであり、室炉式コークス炉の窯口構造として、操業によるコークス押出負荷や熱負荷の影響下でも、窯口金物に緩みや脱落が生じることを的確に防止できる窯口構造を提供することを目的とするものである。  The present invention has been made in view of the above circumstances, and as a kiln opening structure of a chamber type coke oven, the kiln fittings are loosened or dropped even under the influence of coke extrusion load or heat load due to operation. An object of the present invention is to provide a kiln structure that can accurately prevent the occurrence.

本発明者らは、窯口金物のうち、特にプロテクションレッジに注目し、そのプロテクションレッジが緩んだり脱落したりすることを防止するために鋭意検討を重ねた。その結果、プロテクションレッジの一部をヘッドプレートより炉前面側(炉の手前側)に位置させ、そのプロテクションレッジをヘッドプレートより炉前面側(炉の手前側)の位置で固定することが有効であることを見出した。  The inventors of the present invention have paid particular attention to the protection ledge among the kiln fittings, and have made extensive studies in order to prevent the protection ledge from loosening or falling off. As a result, it is effective to place a part of the protection ledge on the front side of the furnace (front side of the furnace) from the head plate and fix the protection ledge at a position on the front side of the furnace (front side of the furnace) from the head plate. I found out.

本発明は、上記の知見に基づいてなされており、以下のような特徴を備えている。  The present invention has been made based on the above findings and has the following features.

[1]燃焼室と炭化室とを交互に炉幅方向に配置して構成され、炭化室の窯口にドアフレームと、燃焼室のレンガを押さえるプロテクションレッジおよびヘッドプレートと、フラッシュプレートとを有する室炉式コークス炉において、プロテクションレッジでヘッドプレートを挟み込み、少なくとも前記プロテクションレッジの一部が前記ヘッドプレートより炉前面側に位置し、前記ヘッドプレートより炉前面側の位置で前記プロテクションレッジが固定されていることを特徴とするコークス炉の窯口構造。  [1] The combustion chamber and the carbonization chamber are alternately arranged in the furnace width direction, and have a door frame, a protection ledge and a head plate for holding the brick in the combustion chamber, and a flash plate at the furnace port of the carbonization chamber. In a chamber-type coke oven, a head plate is sandwiched between protection ledges, at least a part of the protection ledge is located on the front side of the furnace from the head plate, and the protection ledge is fixed at a position on the front side of the furnace from the head plate. Coke oven structure of the coke oven, characterized by

[2]前記プロテクションレッジは、凹凸部を有し、その凹凸部で他の金物と噛み合わされていることを特徴とする前記[1]に記載のコークス炉の窯口構造。  [2] The kiln structure of a coke oven according to [1], wherein the protection ledge has an uneven portion, and the uneven portion engages with other hardware.

[3]前記他の金物は、ヘッドプレートとドアフレームの間隔を調整するライナーであることを特徴とする前記[2]に記載のコークス炉の窯口構造。  [3] The coke oven furnace structure according to [2], wherein the other hardware is a liner that adjusts a distance between the head plate and the door frame.

[4]前記プロテクションレッジは、高さ方向に凸部を持つプロテクションレッジ部品と高さ方向に凹部を持つプロテクションレッジ部品とが噛み合わされて、高さ方向に2個以上のプロテクションレッジ部品が連ねられて構成されていることを特徴とする前記[1]〜[3]のいずれかに記載のコークス炉の窯口構造。  [4] In the protection ledge, a protection ledge component having a convex portion in the height direction and a protection ledge component having a concave portion in the height direction are engaged with each other, and two or more protection ledge components are connected in the height direction. The coke oven kiln structure according to any one of [1] to [3], wherein the structure is configured as described above.

本発明においては、プロテクションレッジの少なくとも一部がヘッドプレートより炉前面側(炉の手前側)に位置し、炉前面側(炉の手前側)からプロテクションレッジを固定するようにしたので、プロテクションレッジの緩みや脱落が防止でき、補修頻度や補修作業が低減し、炉体の保護が達成できるという利点がある。  In the present invention, at least a part of the protection ledge is located on the front side of the furnace (front side of the furnace) from the head plate, and the protection ledge is fixed from the front side of the furnace (front side of the furnace). Can be prevented from loosening and falling off, the frequency of repairs and repair work can be reduced, and the furnace body can be protected.

コークス炉の部分断面平面図。The partial cross-sectional top view of a coke oven.正常な窯口構造を示す平面図および側面図。The top view and side view which show a normal kiln opening structure.炉体変形と炉体金物脱落が生じた窯口構造を示す平面図および側面図。The top view and side view which show the kiln opening structure in which the furnace body deformation | transformation and the furnace body metal fitting fell.ドアフレームを交換した窯口構造を示す平面図および側面図。The top view and side view which show the kiln opening structure which replaced the door frame.本発明の実施形態1における窯口構造を示す平面図および側面図。The top view and side view which show the kiln opening structure inEmbodiment 1 of this invention.本発明の実施形態2における窯口構造を示す平面図、側面図および斜視図。The top view, side view, and perspective view which show the kiln opening structure inEmbodiment 2 of this invention.本発明の実施形態3における窯口構造を示す平面図、側面図および斜視図。The top view, side view, and perspective view which show the kiln opening structure inEmbodiment 3 of this invention.

本発明の実施形態を図面に基づいて説明する。  Embodiments of the present invention will be described with reference to the drawings.

[実施形態1]
前述したように、図2は建設当時の健全な状態の窯口構造を示すものである。この窯口構造では、一定期間の使用を経過するとプロテクションレッジ37が炭化室32側に変形したり落下したりするような状態となり、窯口の補修が必要な状態になる。
[Embodiment 1]
As described above, FIG. 2 shows a healthy kiln structure at the time of construction. In this kiln structure, after a certain period of use, theprotection ledge 37 is deformed or dropped to thecarbonization chamber 32 side, and the kiln is required to be repaired.

そして、前述したように、図3は炉体3の変形と全てのプロテクションレッジ37の脱落が生じた状態の窯口構造を示すものである。この状態ではドアフレーム35が変形して、炉蓋が嵌らなくなる問題が発生し、しばしばドアフレーム35の交換が実施されている。  As described above, FIG. 3 shows a kiln structure in a state where thefurnace body 3 is deformed and all theprotection ledges 37 are dropped. In this state, thedoor frame 35 is deformed, causing a problem that the furnace lid cannot be fitted, and thedoor frame 35 is often replaced.

図4に、ドアフレーム35を交換した場合の窯口構造を示す。図4(a)が平面図であり、図4(b)が側面図(図4(a)のA−A矢視断面図)である。新品ドアフレーム35の設置のため、ドアフレーム35と炉体3の変形部との隙間にはヤーンロープ41などの詰め物が入る他、ヘッドプレート34とドアフレーム35の間隔を調整するために、適切な厚みを持った鉄系部材のライナー42が取り付けられる場合もある。  FIG. 4 shows a kiln structure when thedoor frame 35 is replaced. Fig.4 (a) is a top view, FIG.4 (b) is a side view (AA arrow sectional drawing of Fig.4 (a)). In order to install thenew door frame 35, the gap between thedoor frame 35 and the deformed portion of thefurnace body 3 is filled with a filling such as ayarn rope 41, and in order to adjust the distance between thehead plate 34 and thedoor frame 35, In some cases, a thick iron-basedliner 42 is attached.

本発明者らは、脱落したプロテクションレッジ37の部分にモルタル39を詰めるだけでは強度部材にならず、炉体3の変形が更に進んでしまうことと、単純にプロテクションレッジ37と同等の部材を入れ込むだけでは、すぐにその同等部材が脱落してしまうことを確認した。  The inventors of the present invention do not become a strength member simply by filling the part of theprotection ledge 37 that has fallen out, but the deformation of thefurnace body 3 further progresses, and simply insert a member equivalent to theprotection ledge 37. It was confirmed that the equivalent member would fall off immediately by simply inserting.

また、プロテクションレッジ37の脱落を防止するために、プロテクションレッジ37をヘッドプレート34に固定することが考えられるが、燃焼室31の奥側にあるプロテクションレッジ37とヘッドプレート34の間で何らかの固定処理をすることは非常に困難であることも承知している。  In order to prevent theprotection ledge 37 from falling off, it may be possible to fix theprotection ledge 37 to thehead plate 34. However, any fixing process may be performed between theprotection ledge 37 and thehead plate 34 on the back side of thecombustion chamber 31. I know that it is very difficult to do.

そこで、本発明者らは、鋭意検討の結果、ドアフレーム35の交換時に炉前面側(炉の手前側)からプロテクションレッジ37を固定し、プロテクションレッジ37の脱落を防止することが可能であることを見出した。  Therefore, as a result of intensive studies, the present inventors are able to fix theprotection ledge 37 from the furnace front side (front side of the furnace) when replacing thedoor frame 35 and prevent theprotection ledge 37 from falling off. I found.

上記の知見に基づく、本発明の実施形態1における窯口構造を図5に示す。図5(a)が平面図であり、図5(b)が側面図(図5(a)のA−A矢視断面図)である。  The kiln structure inEmbodiment 1 of this invention based on said knowledge is shown in FIG. Fig.5 (a) is a top view, FIG.5 (b) is a side view (AA arrow sectional drawing of Fig.5 (a)).

図5に示すように、この実施形態1においては、ドアフレーム35と炉体3の変形部との隙間にヤーンロープ41が入るとともに、ヘッドプレート34とドアフレーム35の間隔を調整する鉄系部材のライナー42が取り付けられている。そして、コの字形状をしたプロテクションレッジ43でヘッドプレート34を挟み込み、少なくともプロテクションレッジ43の一部がヘッドプレート34より炉前面側(炉の手前側)に位置し、ヘッドプレート34より炉前面側(炉の手前側)の位置でプロテクションレッジ43が溶接またはリベットでヘッドプレート34もしくはライナー42に固定されている。  As shown in FIG. 5, in the first embodiment, theyarn rope 41 enters the gap between thedoor frame 35 and the deformed portion of thefurnace body 3, and the iron-based member that adjusts the distance between thehead plate 34 and thedoor frame 35 is used. Aliner 42 is attached. Then, thehead plate 34 is sandwiched betweenU-shaped protection ledges 43, and at least a part of theprotection ledge 43 is positioned on the furnace front side (front side of the furnace) from thehead plate 34, and the furnace plate side from thehead plate 34. Aprotection ledge 43 is fixed to thehead plate 34 or theliner 42 by welding or rivet at a position (on the front side of the furnace).

ちなみに、ヘッドプレート34は燃焼室31の幅方向左右にわたって設けられている部材であり、ヘッドプレート34あるいはそのヘッドプレート34に固定されているライナー42は、直接バックステー2で固定されているので、最も炭化室32方向に張り出しにくい部材である。したがって、そのようなヘッドプレート34もしくはライナー42にプロテクションレッジ43を固定することによって、プロテクションレッジ37の張り出し/脱落を的確に防止することができる。  Incidentally, thehead plate 34 is a member provided on the left and right in the width direction of thecombustion chamber 31, and thehead plate 34 or theliner 42 fixed to thehead plate 34 is directly fixed by thebackstay 2. It is a member that hardly protrudes in the direction of thecarbonization chamber 32. Therefore, by fixing theprotection ledge 43 to thehead plate 34 or theliner 42, the overhang / drop off of theprotection ledge 37 can be prevented accurately.

なお、図5では、ライナー42の間に1個ずつプロテクションレッジ43が取り付けられているが、ライナー42の間に複数個のプロテクションレッジ43が取り付けられていても良いし、部分的にプロテクションレッジ43が取り付けられていない箇所があっても構わない。  In FIG. 5, theprotection ledges 43 are attached one by one between theliners 42, but a plurality ofprotection ledges 43 may be attached between theliners 42, or a part of theprotection ledges 43. It does not matter if there is a part that is not attached.

また、当初のプロテクションレッジ37が残存している箇所では、そのまま当初のプロテクションレッジ37を採用しても構わない。  Further, theoriginal protection ledge 37 may be used as it is at a place where theoriginal protection ledge 37 remains.

また、劣化が進むと、プロテクションレッジ37だけでなく、プロテクションプレート38も脱落している場合がある。この場合はプロテクションプレート38の部分もカバーする寸法でプロテクションレッジ43を取り付けても良い。  Further, when the deterioration progresses, not only theprotection ledge 37 but also theprotection plate 38 may be dropped. In this case, theprotection ledge 43 may be attached so as to cover the portion of theprotection plate 38.

すなわち、プロテクションレッジ43は、ヘッドプレート34の炉前面側にプロテクションレッジ43の一部があり、溶接やリベット留などで固定できる形状であれば、コの字の形状でなくても構わない。  That is, theprotection ledge 43 does not have to be U-shaped as long as theprotection ledge 43 has a part of theprotection ledge 43 on the furnace front side of thehead plate 34 and can be fixed by welding or rivet fastening.

このようにして、この実施形態1においては、プロテクションレッジ43の少なくとも一部がヘッドプレート34より炉前面側(炉の手前側)に位置し、炉前面側(炉の手前側)からプロテクションレッジ43を固定することができるので、プロテクションレッジ43の緩みや脱落が防止でき、補修頻度や補修作業が低減し、炉体3の保護が達成できるという利点がある。  In this way, in the first embodiment, at least a part of theprotection ledge 43 is located on the furnace front side (front side of the furnace) from thehead plate 34, and theprotection ledge 43 from the furnace front side (front side of the furnace). Since theprotection ledge 43 can be prevented from being loosened or dropped off, the repair frequency and repair work can be reduced, and thefurnace body 3 can be protected.

[実施形態2]
本発明の実施形態2における窯口構造を図6に示す。図6(a)が平面図、図6(b)が側面図(図6(a)のB−B矢視断面図)、図6(c)が部分斜視図である。
[Embodiment 2]
The kiln structure inEmbodiment 2 of this invention is shown in FIG. 6A is a plan view, FIG. 6B is a side view (a cross-sectional view taken along the line BB in FIG. 6A), and FIG. 6C is a partial perspective view.

この実施形態2における窯口構造は、上記の実施形態1における窯口構造と基本的には同様であるが、図6(c)に示すように、プロテクションレッジ44が、炉幅方向の凹部44aと、高さ方向の凹部44bを有しており、凹部44aでヘッドプレート34を挟み込むとともに、凹部44bでライナー42と噛み合わされている。  The kiln structure in the second embodiment is basically the same as the kiln structure in the first embodiment. However, as shown in FIG. 6 (c), theprotection ledge 44 has arecess 44a in the furnace width direction. And aconcave portion 44b in the height direction. Thehead plate 34 is sandwiched by theconcave portion 44a and is engaged with theliner 42 by theconcave portion 44b.

これによって、この実施形態2においては、プロテクションレッジ44が他の金物(ここでは、ライナー42)と噛み合うことで、プロテクションレッジ44の脱落が一層防止でき、補修頻度や補修作業がさらに低減し、炉体3の保護が達成できるという利点がある。  Accordingly, in the second embodiment, theprotection ledge 44 meshes with other hardware (here, the liner 42), so that theprotection ledge 44 can be further prevented from falling off, and the repair frequency and repair work can be further reduced. There is an advantage that protection of thebody 3 can be achieved.

[実施形態3]
本発明の実施形態3における窯口構造を図7に示す。図7(a)が平面図、図7(b)が側面図(図7(a)のB−B矢視断面図)、図7(c)が部分斜視図である。
[Embodiment 3]
The kiln structure inEmbodiment 3 of this invention is shown in FIG. 7A is a plan view, FIG. 7B is a side view (a cross-sectional view taken along line BB in FIG. 7A), and FIG. 7C is a partial perspective view.

この実施形態3における窯口構造は、上記の実施形態1における窯口構造と基本的には同様であるが、図7(b)に示すように、高さ方向に複数個(ここでは、3個)のプロテクションレッジ部品46が連ねられてプロテクションレッジ45が構成されている。このプロテクションレッジ部品46は、図7(c)に示すように、炉幅方向の凹部46aと、高さ方向の凸部46bと、高さ方向の凹部46cを有しており、凹部46aでヘッドプレート34を挟み込むとともに、凹部46cを他のプロテクションレッジ部品46の凸部46bと噛み合わせている。なお、最下方のプロテクションレッジ部品46は、凹部46cをライナー42に設けた凸部42aと噛み合わせている。  The kiln structure in the third embodiment is basically the same as the kiln structure in the first embodiment described above, but as shown in FIG. )Protection ledge components 46 are connected to form aprotection ledge 45. As shown in FIG. 7C, theprotection ledge component 46 has aconcave portion 46a in the furnace width direction, aconvex portion 46b in the height direction, and aconcave portion 46c in the height direction. While sandwiching theplate 34, theconcave portion 46 c is engaged with theconvex portion 46 b of anotherprotection ledge component 46. The lowermostprotection ledge component 46 meshes with aconvex portion 42 a provided on theliner 42 with aconcave portion 46 c.

これによって、この実施形態3においては、プロテクションレッジ部品46が複数個(ここでは、3個)噛み合うことでプロテクションレッジ45が構成されているので、プロテクションレッジ45の脱落が一層防止でき、補修頻度や補修作業がさらに低減し、炉体3の保護が達成できるという利点がある。  Accordingly, in the third embodiment, theprotection ledge 45 is configured by meshing a plurality of (in this case, three)protection ledge parts 46, so that theprotection ledge 45 can be further prevented from falling off. There is an advantage that the repair work is further reduced and the protection of thefurnace body 3 can be achieved.

ちなみに、プロテクションレッジ部品46を複数個組み合わしてプロテクションレッジ45を構成しているのは、次のような理由である。すなわち、プロテクションレッジ単体の高さ方向寸法が大きいと、炉体3が変形(湾曲)している場合は嵌め込むことが難しくなる。一方、炉体3の変形防止効果の点からは、プロテクションレッジができるだけ高さ方向全体にわたって嵌め込まれていることが望ましい。そこで、高さ方向寸法を短くしたプロテクションレッジ部品46を複数個組み合わせてプロテクションレッジ45を構成することで、嵌め込みの容易性(施工性)と炉体3の変形防止効果を両立できるようにしている。  Incidentally, the reason why theprotection ledge 45 is configured by combining a plurality ofprotection ledge components 46 is as follows. That is, when the height dimension of the protection ledge alone is large, it becomes difficult to fit thefurnace body 3 when it is deformed (curved). On the other hand, from the viewpoint of the deformation preventing effect of thefurnace body 3, it is desirable that the protection ledge is fitted over the entire height direction as much as possible. Therefore, by combining a plurality ofprotection ledge components 46 whose height direction dimensions are shortened to form theprotection ledge 45, both the ease of fitting (workability) and the effect of preventing deformation of thefurnace body 3 can be achieved. .

本発明の実施例1を述べる。  A first embodiment of the present invention will be described.

この実施例1においては、表1に示す仕様のコークス炉を用いてコークスの製造を2ヶ月間行い、窯口構造の変形(窯口構造の変化・緩み、窯口金物の脱落)の状態を経時的に観察した。また、窯口構造の変形に伴うコークス押出負荷の変化も観察して、押出負荷からも窯口構造の変形を間接的に評価した。  In this Example 1, coke was manufactured for 2 months using a coke oven having the specifications shown in Table 1, and the state of deformation of the kiln structure (change / loosening of kiln structure, dropping of kiln hardware) Observed over time. Moreover, the change of the coke extrusion load accompanying the deformation of the kiln structure was also observed, and the deformation of the kiln structure was indirectly evaluated from the extrusion load.

その際に、図4に示した従来の窯口構造の場合を従来例とし、図5に示した本発明の実施形態1における窯口構造の場合を本発明例1、図6に示した本発明の実施形態2における窯口構造の場合を本発明例2、図7に示した本発明の実施形態3における窯口構造の場合を本発明例3とした。  At that time, the case of the conventional kiln structure shown in FIG. 4 is taken as a conventional example, and the case of the kiln structure inEmbodiment 1 of the present invention shown in FIG. The case of the kiln opening structure inEmbodiment 2 of the invention is referred to as Invention Example 2, and the case of the kiln opening structure inEmbodiment 3 of the present invention shown in FIG.

なお、窯口構造の変形の状態については、それぞれの窯口構造を新規に設置した初期のプロテクションレッジの炭化室側への張出量をゼロとして、2ヶ月間の操業後のプロテクションレッジの炭化室側への張出量をレーザー変位計で測定した。従来例における張出量を1とした場合の本発明例1〜3における張出量の相対値を表2に示す。また、コークス押出負荷については、2ヶ月間の操業後の押出機にかかる電流値を測定し、従来例における押出負荷(電流値)を1とした場合の本発明例1〜3における押出負荷(電流値)の相対値を表2に示す。  Regarding the state of deformation of the kiln opening structure, the carbonization of the protection ledge after two months of operation was set to zero with the amount of overhang of the initial protection ledge where each kiln opening structure was newly installed to the coking chamber side being zero. The amount of overhang to the room side was measured with a laser displacement meter. Table 2 shows the relative values of the overhang amounts in Invention Examples 1 to 3 when the overhang amount in the conventional example is 1. Moreover, about the coke extrusion load, the electric current value concerning the extruder after the operation for two months is measured, and the extrusion load in the present invention examples 1 to 3 when the extrusion load (current value) in the conventional example is 1. The relative values of (current value) are shown in Table 2.

表2に示すように、従来例に比べて、本発明例1〜3ではプロテクションレッジの炭化室側への張出量は小さく、そのためコークス押出負荷も小さくなっている。また、本発明例1に比べて、本発明例2、3の方が張出量とコークス押出負荷が小さく、一層効果が大きいことが認められる。  As shown in Table 2, compared with the conventional example, in Examples 1 to 3 of the present invention, the overhang amount of the protection ledge toward the carbonization chamber is small, and therefore the coke extrusion load is also small. Further, it can be seen that, compared with Invention Example 1, Invention Examples 2 and 3 have a smaller overhang amount and coke extrusion load and are more effective.

Figure 2012102302
Figure 2012102302

Figure 2012102302
Figure 2012102302

1 室炉式コークス炉
2 バックステー
3 炉体
10 窯口
11 炉体金物
12 窯口金物
31 燃焼室
32 炭化室
33 フラッシュプレート
34 ヘッドプレート
35 ドアフレーム
36 フックボルト
37 プロテクションレッジ
38 プロテクションプレート
39 モルタル
40 レンガ
41 ヤーンロープ
42 ライナー
42a 凸部
43 プロテクションレッジ
44 プロテクションレッジ
44a 凹部
44b 凹部
45 プロテクションレッジ
46 プロテクションレッジ部品
46a 凹部
46b 凸部
46c 凹部
DESCRIPTION OFSYMBOLS 1 Chamber furnacetype coke oven 2Backstay 3Furnace body 10Kiln opening 11Furnace body hardware 12Furnace body hardware 31Combustion chamber 32Carbonization chamber 33Flash plate 34Head plate 35Door frame 36Hook bolt 37Protection ledge 38Protection plate 39Mortar 40Brick 41Yarn Rope 42Liner 42a Convex 43Protection ledge 44Protectionledge 44aConcave 44b Concave 45Protection ledge 46Protection ledgecomponent 46aConcave 46b Convex 46c Concave

Claims (4)

Translated fromJapanese
燃焼室と炭化室とを交互に炉幅方向に配置して構成され、炭化室の窯口にドアフレームと、燃焼室のレンガを押さえるプロテクションレッジおよびヘッドプレートと、フラッシュプレートとを有する室炉式コークス炉において、プロテクションレッジでヘッドプレートを挟み込み、少なくとも前記プロテクションレッジの一部が前記ヘッドプレートより炉前面側に位置し、前記ヘッドプレートより炉前面側の位置で前記プロテクションレッジが固定されていることを特徴とするコークス炉の窯口構造。  Combustion chamber and carbonization chamber are arranged alternately in the furnace width direction, and the chamber type has a door frame, a protection ledge and a head plate for holding bricks in the combustion chamber, and a flash plate at the furnace port of the carbonization chamber. In a coke oven, the head plate is sandwiched by a protection ledge, at least a part of the protection ledge is located on the furnace front side of the head plate, and the protection ledge is fixed at a position on the furnace front side of the head plate. Coke oven structure featuring a coke oven. 前記プロテクションレッジは、凹凸部を有し、その凹凸部で他の金物と噛み合わされていることを特徴とする請求項1に記載のコークス炉の窯口構造。  The coke oven furnace structure according to claim 1, wherein the protection ledge has an uneven portion, and the uneven portion engages with other hardware. 前記他の金物は、ヘッドプレートとドアフレームの間隔を調整するライナーであることを特徴とする請求項2に記載のコークス炉の窯口構造。  The coke oven furnace structure according to claim 2, wherein the other hardware is a liner that adjusts a distance between the head plate and the door frame. 前記プロテクションレッジは、高さ方向に凸部を持つプロテクションレッジ部品と高さ方向に凹部を持つプロテクションレッジ部品とが噛み合わされて、高さ方向に2個以上のプロテクションレッジ部品が連ねられて構成されていることを特徴とする請求項1〜3のいずれかに記載のコークス炉の窯口構造。  The protection ledge is constructed by engaging a protection ledge component having a convex portion in the height direction and a protection ledge component having a concave portion in the height direction, and connecting two or more protection ledge components in the height direction. The coke oven kiln structure according to any one of claims 1 to 3, wherein the structure is a coke oven structure.
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