JP5458679B2 - Furnace top installation method for coke oven construction - Google Patents

Furnace top installation method for coke oven construction Download PDF

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JP5458679B2
JP5458679B2 JP2009135081A JP2009135081A JP5458679B2 JP 5458679 B2 JP5458679 B2 JP 5458679B2 JP 2009135081 A JP2009135081 A JP 2009135081A JP 2009135081 A JP2009135081 A JP 2009135081A JP 5458679 B2 JP5458679 B2 JP 5458679B2
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coke oven
furnace
roof
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furnace top
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保章 小柳
浩 多久和
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JFE Steel Corp
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本発明は、コークス炉を新設したり補修したりして建設する場合に、そのコークス炉の炉頂設備を据付けるコークス炉建設における炉頂設備据付工法に関するものである。   The present invention relates to a furnace top equipment installation method in the construction of a coke oven in which the furnace top equipment of the coke oven is installed when the coke furnace is newly constructed or repaired.

コークス炉の炭化室や燃焼室の壁部は耐火レンガを積み重ねて構築される。コークス炉の新設或いは補修に伴って、耐火レンガを積み重ねるとき、及び積み重ねた耐火レンガを昇温するときには、それら積み重ねた耐火レンガを風雨にさらされないようにする必要があり、新設或いは補修するコークス炉は、仮設上屋と呼ばれる仮設建家で覆われる。この仮設上屋によって炉体を構成する耐火レンガは風雨から守られる。下記特許文献１、２に記載されるコークス炉では、このように仮設上屋を構築した後、例えばコークス炉の炉頂に設けられた装炭車用のレールに門型クレーンを搭載し、この門型クレーンを用いてコークス炉の炉頂設備を吊り上げ、それを搬送して据付けるようにしている。   The walls of the coking oven carbonization chamber and combustion chamber are constructed by stacking refractory bricks. When stacking refractory bricks and raising the temperature of the stacked refractory bricks due to the installation or repair of a coke oven, it is necessary to prevent the stacked refractory bricks from being exposed to the wind and rain. Is covered with a temporary building called a temporary roof. The refractory bricks constituting the furnace body are protected from wind and rain by this temporary roof. In the coke ovens described in Patent Documents 1 and 2 below, after constructing the temporary roof in this way, for example, a portal crane is mounted on a rail for a coal-mounted vehicle provided at the top of the coke oven, Using a portal crane, the coke oven top equipment is lifted and transported for installation.

特開２００８−７５０１８号公報JP 2008-75018 A 特開２００８−２６６５３３号公報JP 2008-266533 A

しかしながら、前記特許文献１、２に記載されるコークス炉建設用仮上屋を使用した建設における炉頂設備据付工法では、コークス炉の炉頂に設けられた装炭車用のレールに門型クレーンを搭載し、この門型クレーンを用いてコークス炉の炉頂設備を吊り上げ、それを搬送して据付けるようにしているため、炉頂部から炭化室及び燃焼室の炉壁を構成する耐火レンガに荷重が作用する。この荷重は、積み重ねられた耐火レンガや昇温中の耐火レンガに作用するため、積み重ねられた耐火レンガに歪みが生じたり、レンガ間のモルタルに亀裂が生じたりする。このような耐火レンガの歪みやモルタルの亀裂は、操業後のガス漏れやそれに伴う黒煙発生の原因となるため、積み重ねられた耐火レンガに可及的に荷重が作用しない炉頂設備据付工法が望まれている。
本発明は、上記のような問題点に着目してなされたものであり、積み重ねられた耐火レンガに可及的に荷重が作用しないコークス炉建設における炉頂設備据付工法を提供することを目的とするものである。 However, in the furnace top equipment installation method in the construction using the coke oven construction temporary roof described in Patent Documents 1 and 2, a portal crane is installed on the rail for the coal-coating vehicle provided at the top of the coke furnace. The coke oven furnace top equipment is lifted using this portal crane and transported and installed, so the refractory bricks that make up the furnace wall of the carbonization chamber and combustion chamber from the top of the furnace are installed. A load acts. Since this load acts on the stacked refractory bricks or the refractory bricks being heated, the stacked refractory bricks are distorted or the mortar between the bricks is cracked. Such distortion of refractory bricks and cracks in mortar cause gas leakage after operation and the generation of black smoke associated therewith.Therefore, it is necessary to install a furnace top facility that does not apply as much load as possible to stacked refractory bricks. It is desired.
The present invention has been made paying attention to the above-mentioned problems, and an object thereof is to provide a furnace top equipment installation method in the construction of a coke oven in which a load does not act as much as possible on the stacked refractory bricks. To do.

上記課題を解決するために、本発明のコークス炉建設における炉頂設備据付工法は、コークス炉の新設や補修といったコークス炉建設における炉頂設備据付工法であって、建設されるコークス炉の上方に設けられた仮設上屋の上屋根に、当該コークス炉の炉団方向に走行し移動可能な天井クレーンを設置し、前記仮設上屋の上屋根の妻面を全面開口し、その全面開口された妻面から前記天井クレーンに吊り下げた炉頂設備を建設されるコークス炉の炉頂部に搬送することを特徴とするものである。
また、前記天井クレーンを、建設されるコークス炉の幅方向に二基以上併設することを特徴とするものである。
また、前記天井クレーンを、前記仮設上屋の上屋根の妻面から当該仮設上屋の炉団方向外側に所定の長さだけ突設したことを特徴とするものである。 In order to solve the above problems, the furnace top equipment installation method in the construction of a coke oven of the present invention is a furnace top equipment installation method in the construction of a coke oven such as new installation or repair of a coke oven, which is located above the coke oven to be constructed. An overhead crane was installed on the roof of the temporary roof that was installed and moved in the direction of the furnace group of the coke oven. The furnace top equipment suspended from the wife surface on the overhead crane is transported to the top of the coke oven to be constructed.
Further, two or more overhead cranes are provided in the width direction of the coke oven to be constructed.
Further, the overhead crane protrudes from the end surface of the upper roof of the temporary roof by a predetermined length to the outside of the temporary roof in the furnace group direction.

而して、本発明のコークス炉建設における炉頂設備据付工法によれば、建設されるコークス炉の上方に設けられた仮設上屋の上屋根に、当該コークス炉の炉団方向に移動可能な天井クレーンを設置すると共に、仮設上屋の上屋根の妻面を全面開口し、その全面開口された妻面から天井クレーンに吊り下げた炉頂設備を建設されるコークス炉の炉頂部に搬送することとしたため、建設されるコークス炉の積み重ねられた耐火レンガに荷重が作用するのを可及的に抑制防止することができる。   Thus, according to the furnace top equipment installation method in the construction of the coke oven of the present invention, it can be moved to the upper roof of the temporary roof provided above the coke oven to be constructed in the direction of the coke oven of the coke oven. In addition to installing an overhead crane, the entire surface of the top roof of the temporary roof is opened, and the furnace top equipment suspended from the overhead crane is transferred to the top of the coke oven. Therefore, it is possible to suppress and prevent the load from acting on the fire bricks stacked in the coke oven to be constructed as much as possible.

また、天井クレーンを、建設されるコークス炉の幅方向に二基以上併設することとしたため、炉頂設備据付の施工能率が向上する。
また、天井クレーンを、仮設上屋の上屋根の妻面から当該仮設上屋の炉団方向外側に所定の長さだけ突設したことにより、コークス炉炉外の据付用デッキから炉頂設備を直接炉頂部に搬送することが可能となり、炉頂設備据付の施工能率が向上する。 In addition, since two or more overhead cranes are provided side by side in the width direction of the coke oven to be constructed, the construction efficiency for installing the furnace top facility is improved.
In addition, the overhead crane is installed from the installation deck outside the coke oven furnace by projecting the overhead crane by a predetermined length from the face of the roof of the temporary roof to the outside of the temporary roof. It becomes possible to convey directly to the top of the furnace, improving the efficiency of installing the furnace top equipment.

本発明のコークス炉建設における炉頂設備据付工法の一実施形態を示す全体正面図である。It is a whole front view which shows one Embodiment of the furnace top equipment installation construction method in the coke oven construction of this invention. 図１のコークス炉炉頂設備据付工法の側面図である。It is a side view of the coke oven top equipment installation construction method of FIG. 従来のコークス炉建設における炉頂設備据付工法の一例を示す全体正面図である。It is a whole front view which shows an example of the furnace top equipment installation construction method in the conventional coke oven construction. 図３のコークス炉炉頂設備据付工法の側面図である。It is a side view of the coke oven top equipment installation method of FIG.

次に、本発明のコークス炉建設における炉頂設備据付工法の一実施形態について図面を参照しながら説明する。
図１、図２は、既設のコークス炉に隣接して新設コークス炉を建設した本実施形態の炉頂設備据付状態を示している。これらの図中の符号１は新設コークス炉、符号２は既設コークス炉である。新設コークス炉１の炭化室３には、紙面垂直方向に、図示しない燃焼室が隣接しており、この燃焼室内で燃料ガスを燃焼させることにより、炭化室１内の石炭を乾留してコークスとする。図２では、炭化室３に対して、図の左側に押出機用の押出機軌条４が配設されている。一方、炭化室３の図示右方にはガイド車軌条５が敷設され、ガイド車軌条５の右下方には消火車６が配設されている。これらガイド車及び消火車６は、軌条に沿って、図の紙面垂直方向に移動可能としてある。 Next, an embodiment of a furnace top equipment installation method in the construction of a coke oven according to the present invention will be described with reference to the drawings.
FIG. 1 and FIG. 2 show a furnace top equipment installation state of this embodiment in which a new coke oven is constructed adjacent to an existing coke oven. In these drawings, reference numeral 1 is a newly installed coke oven, and reference numeral 2 is an existing coke oven. A combustion chamber (not shown) is adjacent to the carbonization chamber 3 of the new coke oven 1 in the direction perpendicular to the paper surface. By burning fuel gas in the combustion chamber, the coal in the carbonization chamber 1 is dry-distilled to produce coke. To do. In FIG. 2, an extruder rail 4 for the extruder is disposed on the left side of the drawing with respect to the carbonization chamber 3. On the other hand, a guide vehicle rail 5 is laid on the right side of the carbonization chamber 3 in the drawing, and a fire extinguisher 6 is disposed on the lower right side of the guide vehicle rail 5. These guide wheels and fire extinguishing vehicles 6 are movable along the rails in the direction perpendicular to the drawing sheet.

炭化室３や燃焼室の壁、所謂炉壁は、モルタルを介在して、耐火レンガを積み重ねて構築する。耐火レンガの積み重ね作業は勿論、コークス炉完成後の耐火レンガの昇温工程も重要である。特に、耐火レンガの昇温工程は、温度管理の重要性から長期間に及ぶ。耐火レンガを昇温して硝子化するプロセスが特に重要である。
前記炭化室３や燃焼室の下方には、炉底７が形成されている。本実施形態では、炉底７の両側に煙道８が形成されており、炉底７の内部には、コークス炉の燃料ガスとしてのコークス炉ガス配管９や、高炉から供給される高炉ガス配管１０が設置されている。コークス炉ガスは、燃焼室内の燃料ガスとして用いられるが、発熱量が大きすぎるため、高炉ガスを混合して発熱量を制御するのである。 The walls of the carbonization chamber 3 and the combustion chamber, so-called furnace walls, are constructed by stacking refractory bricks with mortar interposed therebetween. In addition to the stacking work of refractory bricks, the temperature raising process of the refractory bricks after completion of the coke oven is also important. In particular, the temperature raising process of refractory bricks extends over a long period of time because of the importance of temperature management. The process of raising the temperature of the refractory brick to vitrification is particularly important.
A furnace bottom 7 is formed below the carbonization chamber 3 and the combustion chamber. In the present embodiment, the flue 8 is formed on both sides of the furnace bottom 7, and the coke oven gas pipe 9 as a fuel gas for the coke oven and the blast furnace gas pipe supplied from the blast furnace are formed inside the furnace bottom 7. 10 is installed. Coke oven gas is used as fuel gas in the combustion chamber. However, since the calorific value is too large, the blast furnace gas is mixed to control the calorific value.

前述したように、図２の新設コークス炉１の左右に押出機及びガイド車が配設されているので、図２の左右方向がコークスの押出方向となる（図１では紙面垂直方向）。このコークスの押出方向を幅方向、コークスの押出方向と垂直な方向を炉団方向とすると、図１の左右方向が炉団方向に相当する（図２では紙面垂直方向）。新設コークス炉１は、炉団方向に所定間隔で立設された擁壁１１の間に構築される。また、新設コークス炉１の幅方向両端部にはバックステイ１２が立設され、このバックステイ１２の外側にプラットホーム１３が構築される。なお、新設コークス炉１と既設コークス炉２の間の部分は中間デッキ１５と呼ばれ、例えばガイド車のメンテナンス領域として使用される。また、新設コークス炉１を挟んだ中間デッキ１５と反対側には、新設コークス炉１を建設するための物資を置くメンテナンスデッキ１６が設けられている。   As described above, since the extruder and the guide wheel are disposed on the left and right sides of the new coke oven 1 shown in FIG. 2, the left-right direction in FIG. 2 is the coke extrusion direction (the vertical direction in FIG. 1). If the coke extrusion direction is the width direction and the direction perpendicular to the coke extrusion direction is the furnace group direction, the left-right direction in FIG. The new coke oven 1 is constructed between retaining walls 11 erected at a predetermined interval in the furnace group direction. Further, a backstay 12 is erected on both ends in the width direction of the new coke oven 1, and a platform 13 is constructed outside the backstay 12. A portion between the newly installed coke oven 1 and the existing coke oven 2 is called an intermediate deck 15 and is used, for example, as a maintenance area for a guide car. In addition, a maintenance deck 16 for placing materials for constructing the new coke oven 1 is provided on the opposite side of the intermediate deck 15 with the new coke oven 1 interposed therebetween.

新設コークス炉１は、図１の２つの擁壁１１の間に建設されるので、上屋根（この上屋根のことを上屋ともいう）１４も、２つの擁壁１１の間に仮設されている。本実施形態のコークス炉用仮設上屋は、前述したプラットホーム上に柱を立設し、その柱の上に上屋根１４を設けているため、新設コークス炉１をすっぽり覆う広さとすることができる。また、押出機軌条４の上方には、低い下屋根（下屋とも言う）１７が仮設されている。   Since the new coke oven 1 is constructed between the two retaining walls 11 in FIG. 1, an upper roof (this upper roof is also referred to as a roof) 14 is also temporarily installed between the two retaining walls 11. Yes. The temporary coke oven for coke oven according to the present embodiment has a pillar standing on the platform described above and an upper roof 14 provided on the pillar, so that the newly installed coke oven 1 can be covered enough. . In addition, a lower lower roof (also referred to as a lower store) 17 is temporarily provided above the extruder rail 4.

本実施形態では、新設コークス炉１の炉頂設備を搬送・据付するために、仮設上屋の上屋根１４に天井クレーン１８を設置した。この天井クレーン１８は、吊り荷重が１０ｔのものであり、新設コークス炉１の炉団方向に長手なクレーン用レール１９を、当該新設コークス炉１の幅方向に、計４本、即ち２セット分、上屋根１４に取付け、夫々に計２基の天井クレーン１８を取付けた（図１の天井クレーン１８は移動の様子を示しており、実際には２基しか取付けられていない）。また、仮設上屋のメンテナンスデッキ１６側の妻面部２３を全面開口し、クレーン用レール１９をメンテナンスデッキ１６側に３ｍ張り出してある。   In the present embodiment, an overhead crane 18 is installed on the roof 14 of the temporary roof in order to transport and install the furnace top equipment of the newly installed coke oven 1. This overhead crane 18 has a suspension load of 10 t, and has four crane rails 19 that are long in the direction of the furnace group of the newly installed coke oven 1 in the width direction of the newly installed coke oven 1, that is, 2 sets. A total of two overhead cranes 18 were attached to the upper roof 14, respectively (the overhead crane 18 in FIG. 1 shows a state of movement, and only two overhead cranes are actually attached). Further, the end face 23 on the maintenance deck 16 side of the temporary shed is fully opened, and the crane rail 19 is projected 3 m toward the maintenance deck 16 side.

この天井クレーン１８で搬送・据付する炉頂設備としては、例えば図２に示す装炭車軌条２０、上昇管２１、ドライメーン２２、図示しない集塵ダクト、炉蓋、炉枠、タイロッドなどが挙げられる。これらの炉頂設備をメンテナンスデッキ１６に置き、メンテナンスデッキ１６の上方に移動させた天井クレーン１８で吊り上げ、炉頂設備を吊った状態で天井クレーン１８を新設コークス炉１の炉上に移動して、それらを搬送し、必要箇所に炉頂設備を下ろして据付ける。この間、新設コークス炉１の炉頂には、少なくとも炉頂設備の荷重は作用しないから、積み重ねた耐火レンガにも荷重が作用することがなく、耐火レンガに歪みが生じたり、モルタルに亀裂が生じたりするのを回避することができる。   Examples of the furnace top equipment that is transported and installed by the overhead crane 18 include a coal-car carriage rail 20, a rising pipe 21, a dry main 22, a dust collection duct (not shown), a furnace lid, a furnace frame, and a tie rod shown in FIG. . These furnace top facilities are placed on the maintenance deck 16, lifted by the overhead crane 18 moved above the maintenance deck 16, and the overhead crane 18 is moved onto the furnace of the newly installed coke oven 1 with the furnace top equipment suspended. Then, transport them and set down the furnace top equipment at the required location. During this time, at least the load at the top of the furnace does not act on the top of the new coke oven 1, so no load is applied to the stacked refractory bricks, and the refractory bricks are distorted or cracked in the mortar. Can be avoided.

図３、図４は、従来のコークス炉建設における炉頂設備据付工法を説明するためのものである。なお、本実施形態と共通する構成には、同等の符号を付した。従来の炉頂設備据付工法では、例えば装炭車軌条２０に門型クレーン１０１を搭載し、この門型クレーン１０１を移動してメンテナンスデッキ１６上の炉頂設備１０２を搬送・据付していた。しかしながら、このようにしたのでは新設コークス炉１の炉頂に炉頂設備１０２及び門型クレーン１０１の荷重が作用し、それによって積み重ねられた炉壁の耐火レンガにも荷重が作用し、耐火レンガに歪みが生じたり、モルタルに亀裂が生じたりする。そして、このように積み重ねられた耐火レンガに歪みが生じたり、隙間を覆うモルタルに亀裂が生じたりすると、そこからガス漏れや黒煙が生じるという問題になる。   FIG. 3 and FIG. 4 are for explaining a furnace top equipment installation method in conventional coke oven construction. In addition, the same code | symbol was attached | subjected to the structure which is common in this embodiment. In the conventional furnace top equipment installation method, for example, the portal crane 101 is mounted on the coal-cooked rail 20, and the furnace crane 102 on the maintenance deck 16 is transported and installed by moving the portal crane 101. However, if it did in this way, the load of the furnace top equipment 102 and the portal crane 101 will act on the furnace top of the newly installed coke oven 1, and the load will also act on the fire bricks of the stacked furnace wall, and fire bricks will be applied. Distortion or cracks in the mortar. When the fire bricks stacked in this way are distorted or cracks occur in the mortar covering the gaps, there is a problem that gas leaks and black smoke are generated therefrom.

このように本実施形態のコークス炉建設における炉頂設備据付工法では、建設される新設コークス炉１の上方に設けられた仮設上屋の上屋根１４に、当該コークス炉１の炉団方向に移動可能な天井クレーン１８を設置すると共に、仮設上屋の上屋根１４の妻面部２３を全面開口し、その全面開口された妻面部２３から天井クレーン１８に吊り下げた炉頂設備を建設される新設コークス炉１の炉頂部に搬送することにより、建設される新設コークス炉１の積み重ねられた耐火レンガに荷重が作用するのを可及的に抑制防止することができる。   As described above, in the furnace top facility installation method in the construction of the coke oven according to the present embodiment, the coke oven 1 moves to the upper roof 14 of the temporary roof provided above the new coke oven 1 to be constructed. A new overhead building 18 is constructed in which a ceiling crane 18 that can be installed is opened, and the end face 23 of the roof 14 of the temporary roof is fully opened, and the top face crane 23 is hung on the overhead crane 18 from the end face 23 that is fully open. By conveying to the furnace top part of the coke oven 1, it can suppress as much as possible that a load acts on the refractory bricks piled up of the new coke oven 1 constructed.

また、天井クレーンを１８、建設される新設コークス炉１の幅方向に二基以上併設することにより、炉頂設備据付の施工能率が向上する。
また、天井クレーン１８を、仮設上屋の上屋根１４の妻面部２３からメンテナンスデッキ１６側、即ち当該仮設上屋の炉団方向外側に所定の長さだけ突設したことにより、コークス炉炉外のメンテナンスデッキ１６から炉頂設備を直接炉頂部に搬送することが可能となり、炉頂設備据付の施工能率が向上する。 Moreover, by installing two or more overhead cranes in the width direction of the newly installed coke oven 1 to be constructed, the construction efficiency of the furnace top facility installation is improved.
Further, by projecting the overhead crane 18 by a predetermined length from the end face 23 of the upper roof 14 of the temporary roof to the maintenance deck 16 side, that is, to the outside of the temporary roof in the furnace group direction, the outside of the coke oven furnace is provided. It becomes possible to convey the furnace top equipment directly from the maintenance deck 16 to the top of the furnace, thereby improving the installation efficiency of the furnace top equipment installation.

１は新設コークス炉、２は既設コークス炉、３は炭化室、４は押出機軌条、５はガイド車軌条、６は消火車、７は炉底、８は煙道、９はコークス炉ガス配管、１０は高炉ガス配管、１１は擁壁、１２はバックステイ、１３はプラットホーム、１４は上屋根、１５は中間デッキ、１６はメンテナンスデッキ、１７は下屋根、１８は天井クレーン、１９はクレーン用レール、２０は装炭車軌条、２１は上昇管、２２はドライメーン、２３は妻面部   1 is a new coke oven, 2 is an existing coke oven, 3 is a carbonization chamber, 4 is an extruder rail, 5 is a guide rail, 6 is a fire extinguisher, 7 is a bottom, 8 is a flue, 9 is a coke oven gas pipe 10 is a blast furnace gas pipe, 11 is a retaining wall, 12 is a backstay, 13 is a platform, 14 is an upper roof, 15 is an intermediate deck, 16 is a maintenance deck, 17 is a lower roof, 18 is an overhead crane, 19 is for a crane Rail, 20 is a coal rail, 21 is a riser, 22 is a dry main, 23 is a wife

Claims (2)

コークス炉の新設や補修といったコークス炉建設における炉頂設備据付工法であって、建設されるコークス炉の上方に設けられた仮設上屋の上屋根に、当該コークス炉の炉団方向に移動可能な天井クレーンを設置し、前記天井クレーンを、前記仮設上屋の上屋根の妻面から当該仮設上屋の炉団方向外側且つメンテナンスデッキの上方に所定の長さだけ突設し、前記仮設上屋の上屋根の妻面を全面開口し、メンテナンスデッキに置かれた炉頂設備を天井クレーンで吊り上げ、前記全面開口された妻面から前記天井クレーンに吊り下げた炉頂設備を建設されるコークス炉の炉頂部に搬送することを特徴とするコークス炉建設における炉頂設備据付工法。 This is a method for installing the top equipment in the construction of a coke oven, such as the construction or repair of a coke oven, which can be moved in the direction of the coke oven of the coke oven on the roof of a temporary roof provided above the coke oven to be constructed. An overhead crane is installed, and the overhead crane is projected by a predetermined length from the end face of the roof of the temporary roof to the outside of the temporary roof of the temporary roof and above the maintenance deck. A coke oven in which the top surface of the top roof is fully opened, the furnace top equipment placed on the maintenance deck is lifted by an overhead crane, and the top equipment is suspended from the full surface opening on the ceiling crane. A furnace top equipment installation method in the construction of a coke oven characterized by being conveyed to the top of the furnace. 前記天井クレーンを、建設されるコークス炉の幅方向に二基以上併設することを特徴とする請求項１に記載のコークス炉建設における炉頂設備据付工法。   2. The method of installing a top equipment in a coke oven construction according to claim 1, wherein two or more overhead cranes are provided side by side in the width direction of the coke oven to be constructed.
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