JP2017101860A - Denitrification reactor - Google Patents
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- E—FIXED CONSTRUCTIONS
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- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
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Abstract
Description
本発明は、脱硝反応器に関する。 The present invention relates to a denitration reactor.
例えばボイラプラントにおいて、ボイラからの排ガス中の窒素酸化物（ＮＯｘ）を取り除くために、大型の脱硝反応器が設置されている。ボイラプラントに用いられる脱硝反応器は、例えば、幅２５ｍ×奥行き１１ｍの大きさで、重量が１０００ｔを超える大型構造物である。そして、この重量のうち約６割は触媒の重量が占めており、触媒を支持するために、脱硝反応器は大掛かりな鉄骨構造で構成される。 For example, in a boiler plant, a large-scale denitration reactor is installed in order to remove nitrogen oxides (NOx) in exhaust gas from the boiler. The denitration reactor used in the boiler plant is, for example, a large structure having a width of 25 m × depth of 11 m and a weight exceeding 1000 t. About 60% of this weight is occupied by the catalyst. In order to support the catalyst, the denitration reactor has a large steel structure.
この種の脱硝反応器として特許文献１が公知である。特許文献１に記載の脱硝反応器は、触媒支持梁と触媒受け梁とを格子状に配置し、これらの周囲を外周フレームで囲った支持構造体（触媒支持構造）が複数の柱脚で支持され、この支持構造体の上に多数の触媒ブロックが配置されて構成される。すなわち、特許文献１において、触媒ブロックの荷重は支持構造体から複数の柱脚に伝達され、複数の柱脚がこの荷重を支持する。 Patent Document 1 is known as this type of denitration reactor. In the denitration reactor described in Patent Document 1, a support structure (catalyst support structure) in which a catalyst support beam and a catalyst receiving beam are arranged in a lattice shape and surrounded by an outer peripheral frame is supported by a plurality of column bases. In addition, a large number of catalyst blocks are arranged on the support structure. That is, in Patent Document 1, the load of the catalyst block is transmitted from the support structure to the plurality of column bases, and the plurality of column bases support this load.
ところで、触媒の性能を発揮するためには、触媒の真上に一定の空間を設ける必要がある。そのため、脱硝反応器を小型・軽量化するためには、この空間を確保しつつ、触媒ブロックを支持する支持構造体の各梁を小型・軽量化する必要がある。 By the way, in order to exhibit the performance of the catalyst, it is necessary to provide a certain space directly above the catalyst. Therefore, in order to reduce the size and weight of the denitration reactor, it is necessary to reduce the size and weight of each beam of the support structure that supports the catalyst block while securing this space.
しかしながら、特許文献１では、支持構造体に掛かる触媒ブロックの荷重を複数の柱脚でしか支持していないため、触媒支持梁や触媒受け梁等の強度部材は触媒ブロックの荷重に耐え得るために剛性の高い部材を用いなければならず、脱硝反応器の小型・軽量化において課題が残る。 However, in Patent Document 1, since the load of the catalyst block applied to the support structure is supported only by a plurality of column bases, the strength members such as the catalyst support beam and the catalyst receiving beam can withstand the load of the catalyst block. A highly rigid member must be used, and problems remain in reducing the size and weight of the denitration reactor.
そこで、本発明は、脱硝反応器の小型・軽量化を図ることを目的とする。 Accordingly, an object of the present invention is to reduce the size and weight of a denitration reactor.
上記目的を達成するために、代表的な本発明は、上下方向に階層状に配置され、それぞれ触媒ブロックを支持する複数の触媒支持構造と、前記複数の触媒支持構造を支持する複数の柱脚と、前記複数の柱脚の上端部に設けられるトラス構造と、を有する脱硝反応器であって、前記触媒支持構造は、同一の水平面内において互いに間隔を空けて平行に配置される複数の触媒支持梁と、前記複数の触媒支持梁と直交する方向に互いに間隔を空けて平行に配置される複数の触媒受け梁と、前記複数の触媒支持梁と前記複数の触媒受け梁を囲むように設けられる外周フレームと、を有する格子状の構造体であり、前記トラス構造と前記触媒支持構造とは吊下げ部材を介して連結されることを特徴とする。 In order to achieve the above object, a representative present invention is arranged in a hierarchy in the vertical direction, and each of a plurality of catalyst support structures that support catalyst blocks and a plurality of column bases that support the plurality of catalyst support structures. And a truss structure provided at the upper ends of the plurality of column bases, wherein the catalyst support structure includes a plurality of catalysts arranged in parallel with a space therebetween in the same horizontal plane. A support beam, a plurality of catalyst receiving beams arranged parallel to each other in a direction orthogonal to the plurality of catalyst support beams, and provided so as to surround the plurality of catalyst support beams and the plurality of catalyst receiving beams. The truss structure and the catalyst support structure are connected via a suspension member.
本発明によれば、上記の特徴により脱硝反応器を小型・軽量化することができる。なお、上記した以外の課題、構成および効果は、以下の実施形態の説明により明らかにされる。 According to the present invention, the denitration reactor can be reduced in size and weight due to the above features. Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.
以下、本発明の実施形態について図面を用いて説明する。図１は本発明の実施形態に係る脱硝反応器をボイラと組み合わせた構成図、図２は本発明の実施形態に係る脱硝反応器の全体構成図、図３は図２に示す脱硝反応器の内部構成を示す断面図、図４は触媒ブロックを支持する触媒支持構造の詳細図、図５は図３に示す脱硝反応器のＡ部の拡大図である。なお、以下の説明において、図２ないし図３の左右方向のことを「奥行き方向」と定義し、同図の紙面表裏方向のことを「幅方向」と定義する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram in which a denitration reactor according to an embodiment of the present invention is combined with a boiler, FIG. 2 is an overall configuration diagram of the denitration reactor according to an embodiment of the present invention, and FIG. 3 is a diagram of the denitration reactor shown in FIG. FIG. 4 is a detailed view of the catalyst support structure for supporting the catalyst block, and FIG. 5 is an enlarged view of part A of the denitration reactor shown in FIG. In the following description, the left-right direction in FIGS. 2 to 3 is defined as a “depth direction”, and the front and back direction in FIG. 2 is defined as a “width direction”.
図１に示すように、本発明の実施形態に係る脱硝反応器２は、ボイラ１の排ガス出口に接続され、水平支持鉄骨３によって支持されている。そして、脱硝反応器２は、ボイラ１にて発生した排ガス中の窒素酸化物を、触媒と反応させることにより除去している。 As shown in FIG. 1, a denitration reactor 2 according to an embodiment of the present invention is connected to an exhaust gas outlet of a boiler 1 and supported by a horizontal support steel frame 3. The denitration reactor 2 removes nitrogen oxides in the exhaust gas generated in the boiler 1 by reacting with the catalyst.
脱硝反応器２は、図２に示すように、上下方向に階層状（本実施形態では３階層）となるように配置され、それぞれ多数の触媒ブロック４を支持する３つの触媒支持構造Ｓと、３つの触媒支持構造Ｓの四隅部をそれぞれ支持する４本の柱脚１０と、４本の柱脚１０の上端部に設けられ、ボイラ１からの排ガスの入口ダクト１５を支持するためのトラス構造８（図３参照）と、を有して構成される。なお、図２において図示しないが、脱硝反応器２の各側面は側面ケーシング９（図７参照）で覆われている。 As shown in FIG. 2, the denitration reactor 2 is arranged so as to be hierarchical (three levels in the present embodiment) in the vertical direction, and three catalyst support structures S each supporting a number of catalyst blocks 4, Four column bases 10 that respectively support the four corners of the three catalyst support structures S, and a truss structure that is provided at the upper end of the four column bases 10 and supports the inlet duct 15 for the exhaust gas from the boiler 1. 8 (see FIG. 3). Although not shown in FIG. 2, each side surface of the denitration reactor 2 is covered with a side casing 9 (see FIG. 7).
触媒支持構造Ｓは、図４に示すように、同一の水平面内において互いに幅方向に間隔を空けて平行に配置される複数の触媒支持梁６と、複数の触媒支持梁６と直交する方向（奥行き方向）に互いに間隔を空けて平行に配置される複数の触媒受け梁５とを格子状に配置し、複数の触媒支持梁６と複数の触媒受け梁５を囲むように矩形枠状の外周フレーム１１を取り付けて形成され、多数の触媒ブロック４を支持できる程度の高い剛性を有する。本実施形態では、触媒支持梁６、触媒受け梁５、及び外周フレーム１１はＨ形鋼が用いられているが、その断面形状は問わない。なお、図４では触媒ブロック４の一部しか図示していないが、実際には触媒支持構造Ｓ上に隙間なく触媒ブロック４が載置される。 As shown in FIG. 4, the catalyst support structure S includes a plurality of catalyst support beams 6 arranged in parallel and spaced apart from each other in the width direction in the same horizontal plane, and a direction orthogonal to the plurality of catalyst support beams 6 ( A plurality of catalyst receiving beams 5 arranged parallel to each other in the depth direction) are arranged in a lattice shape, and an outer periphery of a rectangular frame shape so as to surround the plurality of catalyst supporting beams 6 and the plurality of catalyst receiving beams 5 It is formed by attaching the frame 11 and has a high enough rigidity to support a large number of catalyst blocks 4. In this embodiment, the catalyst support beam 6, the catalyst receiving beam 5, and the outer peripheral frame 11 are made of H-shaped steel, but their cross-sectional shapes are not limited. Although only a part of the catalyst block 4 is shown in FIG. 4, the catalyst block 4 is actually placed on the catalyst support structure S without a gap.
触媒支持構造Ｓは、多数の触媒ブロック４が載置されるため、大きな荷重を支える必要があるが、本実施形態では、その荷重の一部を吊板（吊下げ部材）７を介してトラス構造８で受けている点に大きな特徴がある。この特徴について以下、具体的に説明する。 Since a large number of catalyst blocks 4 are placed on the catalyst support structure S, it is necessary to support a large load. In the present embodiment, a part of the load is supported by a truss via a suspension plate (suspending member) 7. There is a big feature in the point received by the structure 8. This feature will be specifically described below.
図３に示すように、各触媒支持構造Ｓは、奥行き方向に間隔を空けて複数配置された吊板７を介してトラス構造８と連結している。吊板７は、トラス構造８から最下層の触媒支持構造Ｓまで垂下する１枚の板状体であり、本実施形態では例えば板厚ｔ＝２０ｍｍの板材（図５参照）が用いられている。また、吊板７の幅は、触媒支持構造Ｓに掛かる荷重に応じて好適なサイズが選定されている。そして、本実施形態では、吊板７は触媒支持構造Ｓの触媒受け梁５と結合している。 As shown in FIG. 3, each catalyst support structure S is connected to the truss structure 8 via a plurality of suspension plates 7 arranged at intervals in the depth direction. The suspension plate 7 is a single plate-like body that hangs down from the truss structure 8 to the lowermost catalyst support structure S. In this embodiment, for example, a plate material (see FIG. 5) having a plate thickness t = 20 mm is used. . The width of the suspension plate 7 is selected as a suitable size according to the load applied to the catalyst support structure S. In the present embodiment, the suspension plate 7 is coupled to the catalyst receiving beam 5 of the catalyst support structure S.
吊板７と触媒受け梁５との結合部の構造について、図５を参照しながら詳しく説明する。触媒受け梁５のうち吊板７との接合部は、２つの溝形鋼５ａ（例えばＣ形鋼）を互いに背中合わせにし、２つの溝形鋼５ａの間に吊板７の板厚ｔだけ隙間が設けられた構造となっている。この隙間に吊板７が挿入され、吊板７を２つの溝形鋼５ａで挟むようにして、吊板７と溝形鋼５ａとが結合される。この構成により、１枚の吊板７を切断することなく、各階層の触媒受け梁５と結合することができるため、脱硝反応器２の製造が簡単となる。 The structure of the connecting portion between the suspension plate 7 and the catalyst receiving beam 5 will be described in detail with reference to FIG. The joint part of the catalyst receiving beam 5 with the suspension plate 7 has two grooved steels 5a (for example, C-shaped steel) back to back with a gap of the thickness of the suspension plate 7 between the two grooved steels 5a. The structure is provided. The suspension plate 7 is inserted into the gap, and the suspension plate 7 and the grooved steel 5a are coupled so that the suspension plate 7 is sandwiched between the two grooved steels 5a. With this configuration, since the single suspension plate 7 can be combined with the catalyst receiving beam 5 at each level, the denitration reactor 2 can be easily manufactured.
ここで、本実施形態では吊板７と溝形鋼５ａとは溶接により接合されている。その理由は、最大で吊板７の幅と厚さ分（吊板７の周長さ）を溶接できるので、接合強度を高くすることができるからである。また、吊板７の板厚を薄くしたい場合は、吊板７の幅を広くすることで、触媒受け梁５との接合部の断面積を大きく確保できるため、大きな荷重を支持できる。吊板７の板厚を薄くすると、触媒ブロック４の配置スペースを圧迫しないので好ましいうえ、触媒ブロック４を緻密に配置できるため、ガスの偏流が生じにくいという利点もある。なお、吊板７と溝形鋼５ａ（触媒受け梁５）との結合方法は、溶接に限定されない。例えば、ボルトとナットにより吊板７と溝形鋼５ａとを締結しても良い。 Here, in this embodiment, the suspension board 7 and the channel steel 5a are joined by welding. This is because the maximum width and thickness of the suspension plate 7 (the circumferential length of the suspension plate 7) can be welded, so that the bonding strength can be increased. In addition, when it is desired to reduce the thickness of the suspension plate 7, by increasing the width of the suspension plate 7, a large cross-sectional area of the joint portion with the catalyst receiving beam 5 can be ensured, so that a large load can be supported. It is preferable to reduce the thickness of the suspension plate 7 because the arrangement space of the catalyst block 4 is not compressed, and the catalyst block 4 can be densely arranged. In addition, the coupling | bonding method of the suspension board 7 and the channel steel 5a (catalyst receiving beam 5) is not limited to welding. For example, you may fasten the suspension board 7 and the channel steel 5a with a volt | bolt and a nut.
このように構成された脱硝反応器２の触媒支持梁６に作用する曲げモーメントについて従来技術と対比しながら説明する。図６（ａ）は従来技術に係る触媒支持梁の曲げモーメント線図、（ｂ）は本発明の実施形態に係る触媒支持梁の曲げモーメント線図である。図６（ａ）に示すように、従来技術では、触媒支持梁６に掛かる荷重は両端（柱脚１０）のみで支持する構成であるため、触媒支持梁６の中央を頂点とする大きな曲げモーメントが触媒支持梁６全体に掛かる。 The bending moment acting on the catalyst support beam 6 of the denitration reactor 2 configured as described above will be described in comparison with the prior art. FIG. 6A is a bending moment diagram of the catalyst supporting beam according to the prior art, and FIG. 6B is a bending moment diagram of the catalyst supporting beam according to the embodiment of the present invention. As shown in FIG. 6A, in the prior art, since the load applied to the catalyst support beam 6 is supported only at both ends (column base 10), a large bending moment with the center of the catalyst support beam 6 as a vertex is provided. Is applied to the entire catalyst support beam 6.
これに対して、図６（ｂ）に示すように、本実施形態では触媒支持梁６に掛かる荷重は、両端（柱脚１０）で支持されることに加えて、梁の中央部が２つの吊板７によって２箇所支持されている。そのため、触媒支持梁６全体に掛かる曲げモーメントは従来技術と比べて大幅に低減されている。よって、触媒支持梁６として用いられる形鋼のサイズを小さくすることができる。 On the other hand, as shown in FIG. 6B, in this embodiment, the load applied to the catalyst support beam 6 is supported at both ends (column base 10), and in addition, there are two central portions of the beam. Two places are supported by the suspension plate 7. Therefore, the bending moment applied to the entire catalyst support beam 6 is greatly reduced as compared with the prior art. Therefore, the size of the shape steel used as the catalyst support beam 6 can be reduced.
次に、脱硝反応器２全体に対してどのように荷重が伝達するかについて説明する。図７（ａ）は従来技術に係る脱硝反応器に対する荷重の伝達を模式的に示す図、図７（ｂ）は本発明の実施形態に係る脱硝反応器に対する荷重の伝達を模式的に図である。なお、図中の白抜き矢印の向きは、荷重の伝達方向を示している。 Next, how the load is transmitted to the entire denitration reactor 2 will be described. FIG. 7A is a diagram schematically showing load transmission to the denitration reactor according to the prior art, and FIG. 7B is a diagram schematically showing load transmission to the denitration reactor according to the embodiment of the present invention. is there. In addition, the direction of the white arrow in the drawing indicates the load transmission direction.
図７（ａ）に示すように、従来技術では触媒支持梁６に掛かる荷重は側面ケーシング９に伝達された後、柱脚１０によって支持される構造であったため、柱脚１０への負担が大きかった。これに対して、本実施形態では、図７（ｂ）に示すように触媒支持梁６に掛かる荷重は、吊板７によって脱硝反応器２の上部にあるトラス構造８に伝達され、その後、側面ケーシング９を介して柱脚１０に伝達される。そのため、従来技術と比べて、触媒支持梁６に掛かる荷重を脱硝反応器２の全体で支持することができる。よって、柱脚１０に掛かる負担が従来技術と比べて少ない。 As shown in FIG. 7A, in the prior art, the load applied to the catalyst support beam 6 is transmitted to the side casing 9, and then supported by the column base 10, so that the load on the column base 10 is large. It was. On the other hand, in this embodiment, as shown in FIG. 7B, the load applied to the catalyst support beam 6 is transmitted to the truss structure 8 at the upper part of the denitration reactor 2 by the suspension plate 7, and then the side surface It is transmitted to the column base 10 through the casing 9. Therefore, the load applied to the catalyst support beam 6 can be supported by the entire denitration reactor 2 as compared with the prior art. Therefore, the burden applied to the column base 10 is less than that of the prior art.
以上説明したように、本実施形態では、吊板７を設けて触媒支持梁６に掛かる荷重を脱硝反応器２の上部のトラス構造８へと伝達するよう荷重の伝達経路を変えたことにより、当該荷重を脱硝反応器２の構造物全体で支持することができる。そのため、触媒支持梁６のサイズを小さくすることができ、その結果、脱硝反応器２の小型・軽量化を実現することができる。そして、脱硝反応器２の柱脚１０と水平支持鉄骨３との芯を合わせることにより、水平支持鉄骨３に作用させる荷重の負担も低減することができる。 As described above, in the present embodiment, by providing the suspension plate 7 and changing the load transmission path so as to transmit the load applied to the catalyst support beam 6 to the truss structure 8 above the denitration reactor 2, The load can be supported by the entire structure of the denitration reactor 2. Therefore, the size of the catalyst support beam 6 can be reduced, and as a result, the denitration reactor 2 can be reduced in size and weight. And the burden of the load made to act on the horizontal support steel frame 3 can also be reduced by aligning the core of the column base 10 and the horizontal support steel frame 3 of the denitration reactor 2.
本発明の効果をより具体的に説明すると、上記実施形態のように吊板７を設ける構成にするだけで、例えば、触媒支持梁６に用いるＨ形鋼のフランジ幅を従来の３００ｍｍから２００ｍｍ程度に、ウェブの高さを従来の９００ｍｍから４００ｍｍ程度に軽減できる。特に、脱硝反応器２では排ガスを整流させるために、触媒ブロック４の上部には十分な空間が必要となり、脱硝反応器２の高さを低くすることは容易ではなかったが、本実施形態のように吊板７を用いる構成を用いれば、１階層当たり触媒支持梁６の高さを約５００ｍｍ低くすることができる。そして、その効果は、階層が多くなるほど顕著となる。 The effect of the present invention will be described more specifically. For example, the flange width of the H-shaped steel used for the catalyst support beam 6 is about 300 mm to 200 mm, for example, by simply providing the suspension plate 7 as in the above embodiment. In addition, the height of the web can be reduced from the conventional 900 mm to about 400 mm. In particular, in the denitration reactor 2, in order to rectify the exhaust gas, a sufficient space is required above the catalyst block 4, and it is not easy to reduce the height of the denitration reactor 2. Thus, if the structure using the suspension plate 7 is used, the height of the catalyst support beam 6 per layer can be reduced by about 500 mm. The effect becomes more prominent as the number of layers increases.
なお、本発明は上記した実施形態に限定されるものではなく、様々な変形例が含まれる。例えば、上記した実施形態は本発明を分かりやすく説明するために詳細に説明したものであり、必ずしも説明した全ての構成を備えるものに限定されるものではない。 In addition, this invention is not limited to above-described embodiment, Various modifications are included. For example, the above-described embodiment has been described in detail for easy understanding of the present invention, and is not necessarily limited to one having all the configurations described.
例えば、図４に示す触媒支持構造Ｓの触媒受け梁５と触媒支持梁６の配置を逆にする構成でも良い。すなわち、触媒受け梁５を幅方向に配置し、触媒支持梁６を奥行き方向に配置する構成としても良い。また、各梁の数、吊板の数、それらの配置構成等は、脱硝反応器の仕様等に応じて適宜決定すれば良い。 For example, the arrangement of the catalyst support beam 5 and the catalyst support beam 6 of the catalyst support structure S shown in FIG. 4 may be reversed. That is, the catalyst receiving beam 5 may be arranged in the width direction and the catalyst support beam 6 may be arranged in the depth direction. In addition, the number of beams, the number of suspension plates, the arrangement configuration thereof, and the like may be appropriately determined according to the specifications of the denitration reactor.
また、吊板７を２つの溝形鋼５ａで挟んで固定する構成に代えて、吊板７を適宜切断し、触媒受け梁５に直接溶接により接合する構成としても良い。具体的には、Ｈ形鋼の触媒受け梁５のフランジ部に吊板７を立てた状態で隅肉溶接する構成としても良い。この構成では、吊板７の長さが短くなるため、吊板７の運搬等の取扱いが簡単である。また、吊板７を触媒受け梁５と結合する構成の代わりに、触媒支持梁６と結合する構成や、触媒受け梁５と触媒支持梁６の両方と結合する構成としても良い。何れの梁と吊板７とを結合させても、トラス構造８により荷重が支持されるため、脱硝反応器２の小型・軽量化を図ることができる。 Moreover, it is good also as a structure which replaces with the structure which pinches | interposes the suspension board 7 between the two channel steels 5a, and cuts the suspension board 7 suitably, and joins it to the catalyst receiving beam 5 by welding directly. Specifically, it is good also as a structure which fillet-welds in the state which the suspension board 7 stood in the flange part of the catalyst receiving beam 5 of H-shaped steel. In this structure, since the length of the suspension board 7 becomes short, handling, such as conveyance of the suspension board 7, is easy. Further, instead of the configuration in which the suspension plate 7 is coupled to the catalyst receiving beam 5, a configuration in which the suspension plate 7 is coupled to the catalyst supporting beam 6 or a configuration in which both the catalyst receiving beam 5 and the catalyst supporting beam 6 are coupled may be employed. Regardless of which beam and suspension plate 7 are coupled, the load is supported by the truss structure 8, so that the denitration reactor 2 can be reduced in size and weight.
上記実施形態では、３階層全ての触媒支持構造Ｓを吊板７で支持したが、例えば、一部の吊板７は３階層全ての触媒支持構造Ｓを支持し、残りの吊板７は一部の階層の触媒支持構造Ｓを支持するような構成としても良い。また、必要に応じて、吊板７に切欠き（穴部）を設けて、排ガスの流れを調整するようにしても良い。 In the above-described embodiment, the catalyst support structures S in all three levels are supported by the suspension plates 7. For example, some suspension plates 7 support the catalyst support structures S in all three layers, and the remaining suspension plates 7 are one. It is good also as a structure which supports the catalyst support structure S of the hierarchy of a part. Moreover, you may make it adjust the flow of waste gas by providing a notch (hole) in the suspension board 7 as needed.
１ ボイラ
２ 脱硝反応器
３ 水平支持鉄骨
４ 触媒ブロック
５ 触媒受け梁
５ａ 溝形鋼
６ 触媒支持梁
７ 吊板（吊下げ部材）
８ トラス構造
９ 側面ケーシング
１０ 柱脚
１１ 外周フレーム
１５ ダクト入口
Ｓ 触媒支持構造
DESCRIPTION OF SYMBOLS 1 Boiler 2 Denitration reactor 3 Horizontal support steel frame 4 Catalyst block 5 Catalyst receiving beam 5a Channel steel 6 Catalyst support beam 7 Suspension plate (suspending member)
8 Truss structure 9 Side casing 10 Column base 11 Outer frame 15 Duct inlet S Catalyst support structure
Claims (3)
前記触媒支持構造は、同一の水平面内において互いに間隔を空けて平行に配置される複数の触媒支持梁と、前記複数の触媒支持梁と直交する方向に互いに間隔を空けて平行に配置される複数の触媒受け梁と、前記複数の触媒支持梁と前記複数の触媒受け梁を囲むように設けられる外周フレームと、を有する格子状の構造体であり、
前記トラス構造と前記触媒支持構造とは吊下げ部材を介して連結されることを特徴とする脱硝反応器。 A plurality of catalyst support structures that are arranged in a hierarchy in the vertical direction and each support a catalyst block, a plurality of column bases that support the plurality of catalyst support structures, and a truss structure that is provided at an upper end portion of the plurality of column legs A denitration reactor comprising:
The catalyst support structure includes a plurality of catalyst support beams arranged parallel to each other in the same horizontal plane, and a plurality of catalyst support structures arranged parallel to each other in a direction orthogonal to the plurality of catalyst support beams. A plurality of catalyst support beams, and a plurality of catalyst support beams and an outer peripheral frame provided so as to surround the plurality of catalyst support beams.
The denitration reactor, wherein the truss structure and the catalyst support structure are connected via a suspension member.
前記吊下げ部材は、前記トラス構造から垂下して最下層の前記触媒支持構造にまで到達する長さの板状体であり、
前記板状体の吊下げ部材は、前記触媒支持構造の前記触媒受け梁と結合されることを特徴とする脱硝反応器。 In claim 1,
The suspension member is a plate-like body having a length that hangs down from the truss structure and reaches the catalyst support structure in the lowermost layer,
The denitration reactor according to claim 1, wherein the suspension member of the plate-like body is coupled to the catalyst receiving beam of the catalyst support structure.
前記触媒受け梁は、前記板状体の吊下げ部材の板厚分の間隔を空けて互いに背中合わせに配置される２つの溝形鋼を含み、
前記板状体の吊下げ部材は、２つの前記溝形鋼に挟まれた状態で前記触媒受け梁と結合されることを特徴とする脱硝反応器。
In claim 2,
The catalyst receiving beam includes two channel steels arranged back to back at an interval of the plate thickness of the suspension member of the plate-like body,
The denitration reactor according to claim 1, wherein the suspension member of the plate-like body is coupled to the catalyst receiving beam in a state of being sandwiched between the two groove steels.
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| PCT/JP2016/085162 WO2017094657A1 (en) | 2015-11-30 | 2016-11-28 | Denitration reactor |
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| US4286549A (en) * | 1979-12-03 | 1981-09-01 | Foster Wheeler Energy Corporation | Steam generator support system |
| JP2582522B2 (en) * | 1993-06-30 | 1997-02-19 | 三菱重工業株式会社 | Assembling and installation method of boiler pressure section and supporting steel frame |
| JP3880810B2 (en) * | 2001-05-22 | 2007-02-14 | バブコック日立株式会社 | Denitration reactor |
| JP2003164732A (en) * | 2001-11-30 | 2003-06-10 | Mitsubishi Heavy Ind Ltd | Denitration apparatus |
| US20050235595A1 (en) * | 2004-04-22 | 2005-10-27 | Bechtel Corporation | Systems and methods for modular construction of large structures |
| JP4838554B2 (en) * | 2005-09-02 | 2011-12-14 | 三菱重工業株式会社 | Boiler damping support structure |
| JP5336148B2 (en) * | 2008-10-24 | 2013-11-06 | 株式会社竹中工務店 | Damping device and building having damping device |
| JP5868713B2 (en) * | 2012-01-23 | 2016-02-24 | 三菱日立パワーシステムズ株式会社 | Windbox support structure and boiler steel structure having the same |
| JP5984731B2 (en) * | 2013-04-05 | 2016-09-06 | 三菱日立パワーシステムズ株式会社 | Denitration system |
| JP2015101921A (en) * | 2013-11-27 | 2015-06-04 | 三菱日立パワーシステムズ株式会社 | Steel frame building, plant and assembly method of steel frame building |
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