JPH0653210B2 - Denitration reactor - Google Patents
Denitration reactorInfo
- Publication number
- JPH0653210B2 JPH0653210B2 JP61177660A JP17766086A JPH0653210B2 JP H0653210 B2 JPH0653210 B2 JP H0653210B2 JP 61177660 A JP61177660 A JP 61177660A JP 17766086 A JP17766086 A JP 17766086A JP H0653210 B2 JPH0653210 B2 JP H0653210B2
- Authority
- JP
- Japan
- Prior art keywords
- guide frame
- bottom beam
- foundation
- denitration
- casing
- 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.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/008—Details of the reactor or of the particulate material; Processes to increase or to retard the rate of reaction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00796—Details of the reactor or of the particulate material
- B01J2208/00805—Details of the particulate material
- B01J2208/00814—Details of the particulate material the particulate material being provides in prefilled containers
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、排ガス中の窒素酸化物を除去するのに使用さ
れる脱硝反応装置に係り、特にその構造体の改良に関す
る。Description: FIELD OF THE INVENTION The present invention relates to a denitration reactor used for removing nitrogen oxides in exhaust gas, and more particularly to improvement of its structure.
従来の技術 排ガス中の窒素酸化物を除去する乾式脱硝法を採用する
場合、アンモニア等の還元剤と窒素酸化物との反応を促
進するために、触媒層を配置した反応装置が用いられ
る。2. Description of the Related Art When a dry denitration method for removing nitrogen oxides in exhaust gas is adopted, a reaction device having a catalyst layer is used in order to promote a reaction between a reducing agent such as ammonia and nitrogen oxides.
第４図および第５図は従来の脱硝反応装置の要部を示し
たもので、第４図は側断面図、第５図は、第４図のＶ−
Ｖ線に沿った拡大断面図である。第４図において、１は
反応装置本体であり、その内部壁面に耐火性保温材２を
配設し、内部にパック化された触媒層３が配置されてい
る。４は入口ダクト、５は出口ダクトであり、この反応
装置本体１は基礎にしっかり支持されている。4 and 5 show the main parts of a conventional denitration reactor, FIG. 4 is a side sectional view, and FIG. 5 is V- of FIG.
It is an expanded sectional view which followed the V line. In FIG. 4, reference numeral 1 denotes a reactor main body, on the inner wall surface of which a refractory heat insulating material 2 is arranged, and inside of which a packed catalyst layer 3 is arranged. 4 is an inlet duct, 5 is an outlet duct, and the reactor main body 1 is firmly supported by the foundation.
第５図は触媒層３部分を拡大して示したもので、パック
化された触媒層３は、ケーシング補強柱６，７、このケ
ーシング補強柱６，７を夫々上部および下部で連結した
上面梁８、底面梁９から成るケーシング10で支持されて
いる。なお、ケーシング補強柱６，７は夫々基礎11に支
持され、更に、底面梁９の要所も支柱12で基礎11に支持
されている。FIG. 5 is an enlarged view of the catalyst layer 3 portion. The packed catalyst layer 3 includes casing reinforcing columns 6 and 7, and upper beam connecting the casing reinforcing columns 6 and 7 at the upper and lower portions, respectively. 8 and is supported by a casing 10 composed of a bottom beam 9. The casing reinforcing columns 6 and 7 are respectively supported by the foundation 11, and the important points of the bottom beam 9 are also supported by the foundation 11 by the columns 12.
さて、排ガスは入口ダクト４から反応装置本体１内へ導
入され、排ガス中の窒素酸化物とアンモニア等の還元剤
との反応が触媒層３において促進される。そして、脱硝
反応の終了した排ガスは、出口ダクト５から排出され
る。Now, the exhaust gas is introduced into the reactor main body 1 through the inlet duct 4, and the reaction between the nitrogen oxide in the exhaust gas and the reducing agent such as ammonia is promoted in the catalyst layer 3. Then, the exhaust gas having undergone the denitration reaction is discharged from the outlet duct 5.
発明が解決しようとする問題点 ところで、脱硝反応装置は内部に高温の排ガスが導入さ
れるもので、かつ、内壁に保温材を配設して保温してあ
るので、反応装置本体１の内外面に大きな温度差が生じ
る。そのため、反応装置本体の内面に垂直ブレース等の
補強材を設置することができず、地震等の水平力が反応
装置本体に加わったときの安全対策として、ケーシング
補強柱６，７の断面を大きくしておかなければならなか
った。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention By the way, in the denitration reaction device, high temperature exhaust gas is introduced into the inside thereof, and since a heat insulating material is arranged on the inner wall to keep the temperature, the inner and outer surfaces of the reaction device main body 1 A large temperature difference occurs. Therefore, it is not possible to install a reinforcing material such as a vertical brace on the inner surface of the reactor main body, and as a safety measure when horizontal force such as an earthquake is applied to the reactor main body, the cross sections of the casing reinforcing columns 6 and 7 should be large. I had to keep it.
すなわち、触媒層３の水平力は第５図に矢印13で示すよ
うにケーシング補強柱６に伝わり、これが上面梁８、底
面梁９をとおり基礎11へ伝達される。このとき、ケーシ
ング補強柱６，７は大きな曲げモーメントを受けて、天
端部に大きなたわみが発生することになる。これを防止
するためには、ケーシング補強柱６，７の断面を大きく
することが必要となり、そのため装置が大形化し基礎を
強化しなければならなくなる等の問題が生ずるものであ
った。That is, the horizontal force of the catalyst layer 3 is transmitted to the casing reinforcing column 6 as shown by an arrow 13 in FIG. 5, and this is transmitted to the foundation 11 through the top beam 8 and the bottom beam 9. At this time, the casing reinforcing columns 6 and 7 receive a large bending moment, and a large bending occurs at the top end portion. In order to prevent this, it is necessary to enlarge the cross section of the casing reinforcing columns 6 and 7, which causes a problem that the device becomes large and the foundation must be strengthened.
問題点を解決するための手段 このような問題点を解決するために、本発明では、基礎
に設置されたケーシング補強柱に上面梁と底面梁とが連
結され、内側に保温材が施工され、保温材内側に多段に
積み重ねられた触媒が複数列配置された脱硝反応装置に
おいて、前記触媒の少なくとも１列を挟むように設けた
上下に伸びるガイドフレームと、このガイドフレームの
上下端部を夫々連結するように設けたガイドフレーム用
上部梁およびガイドフレーム用下部梁と、前記底面梁と
前記ガイドフレームの下端とを連結するとともにこの連
結位置で底面梁を基礎に支持させる支持手段と、前記ガ
イドフレーム用下部梁の略中央部を前記底面梁に連結す
る支持柱と、この支持柱の連結位置の底面梁を前記基礎
に対して半固定する第１のストッパ手段と、前記ガイド
フレーム用上部梁の略中央部を前記上面梁に対して半固
定する第２のストッパ手段とを備えている。Means for Solving Problems In order to solve such problems, in the present invention, a top beam and a bottom beam are connected to a casing reinforcing column installed on a foundation, and a heat insulating material is applied inside, In a denitration reactor in which catalysts stacked in multiple stages inside a heat insulating material are arranged in a plurality of rows, a vertically extending guide frame provided so as to sandwich at least one row of the catalyst and upper and lower ends of the guide frame are connected to each other. An upper beam for a guide frame and a lower beam for a guide frame, a support means for connecting the bottom beam and a lower end of the guide frame, and supporting the bottom beam on a foundation at this connection position; A supporting column for connecting a substantially central portion of the lower beam for use to the bottom beam, and a first stopper means for semi-fixing the bottom beam at the connecting position of the supporting column to the foundation, Second stopper means for semi-fixing the substantially central portion of the upper beam for the guide frame to the upper beam is provided.
作用 上記のように、本発明では、反応装置本体内部に温度差
に影響されないガイドフレームによるトラス構造を配設
することにより、柱に集中して働く水平力を分散させ
て、曲げモーメントを軸力に変化させて支持することが
でき、補強柱の大形化を防止できる。Action As described above, in the present invention, by disposing the truss structure by the guide frame that is not affected by the temperature difference inside the reactor body, the horizontal force concentrated on the pillar is dispersed, and the bending moment is reduced to the axial force. It can be supported by changing to, and it is possible to prevent the reinforcement column from becoming large.
実施例 以下本発明に係る脱硝反応装置の一実施例を第１図ない
し第３図を参照して詳細に説明する。これらの図におい
て、第４図、第５図と同一部分には同一符号を付してそ
の部分の説明は省略する。EXAMPLE An example of the denitration reaction apparatus according to the present invention will be described in detail below with reference to FIGS. 1 to 3. In these figures, the same parts as those in FIGS. 4 and 5 are designated by the same reference numerals, and the description thereof will be omitted.
第１図は、従来の第５図に対応する部分の概略的な図
で、ケーシング補強柱６，７とこれに連結された上面梁
８、底面梁９から成るケーシング10にパック化された触
媒層３が多数列配置されている。ケーシング10の内部に
は、第２図および第３図を参照すると明らかなように、
触媒層３の少なくとも１列を挟むように上下に伸びたガ
イドフレーム20，21が設けられており、その上端部をガ
イドフレーム用上部梁23で連結し、下端部をガイドフレ
ーム用下部梁24で連結している。そして、ガイドフレー
ム20，21は補強梁25で連結されてトラス構造を形成して
いる。FIG. 1 is a schematic view of a portion corresponding to FIG. 5 of the related art, and a catalyst packed in a casing 10 composed of casing reinforcing columns 6 and 7 and a top beam 8 and a bottom beam 9 connected thereto. The layers 3 are arranged in multiple rows. Inside the casing 10, as is apparent with reference to FIGS. 2 and 3,
Vertically extending guide frames 20 and 21 are provided so as to sandwich at least one row of the catalyst layer 3. The upper ends of the guide frames 20 and 21 are connected by a guide frame upper beam 23, and the lower end thereof is a guide frame lower beam 24. It is connected. The guide frames 20 and 21 are connected by a reinforcing beam 25 to form a truss structure.
ガイドフレーム20，21の下端は、支持部材26によって夫
々底面梁９に連結されているとともに、この連結位置で
底面梁９を基礎11に支持している。このガイドフレーム
20，21と支持部材26との連結部（第３図Ａ部、Ｂ部参
照）の連結手段は、上下（縦）方向には固定されるが左
右（横）方向には自由なようにされるものである。The lower ends of the guide frames 20 and 21 are connected to the bottom beam 9 by support members 26, respectively, and the bottom beam 9 is supported to the foundation 11 at this connection position. This guide frame
The connecting means of the connecting portion between the members 20 and 21 and the supporting member 26 (see A and B in FIG. 3) is fixed in the vertical (vertical) direction but free in the horizontal (horizontal) direction. It is something.
また、ガイドフレーム用下部梁24の略中間部は、支持部
材27によって底面梁９に固定されている。この部分（第
３図Ｃ部参照）は上下左右に対して共に固定されてい
る。そして、この支持部材27は底面梁９から基礎11側へ
突出しており、その先端部の横方向の移動を拘束するよ
うストッパ部材28が基礎11側から突出して設けられてい
る。従って、支持部材27の連結位置において、底面梁９
は基礎11に対して半固定的に保持されることになる。A substantially middle portion of the guide frame lower beam 24 is fixed to the bottom beam 9 by a support member 27. This portion (see the portion C in FIG. 3) is fixed both vertically and horizontally. The support member 27 projects from the bottom beam 9 to the base 11 side, and a stopper member 28 is provided to project from the base 11 side so as to restrain the lateral movement of the tip portion thereof. Therefore, at the connecting position of the support member 27, the bottom beam 9
Will be held semi-fixed to the foundation 11.
一方、ガイドフレーム用上部梁23の略中央部へ向けて、
上面梁８から突出部材29が突出するようにして設けられ
ており、その先端部の横方向の移動を拘束するようにス
トッパ部材30がガイドフレーム用上部梁23側から突出し
て設けられている。従って、ガイドフレーム用上部梁23
の中央部は、上面梁８に対して半固定的に保持されるこ
とになる。On the other hand, toward the approximate center of the upper beam 23 for the guide frame,
A projecting member 29 is provided so as to project from the upper beam 8, and a stopper member 30 is provided so as to project from the guide frame upper beam 23 side so as to restrain the lateral movement of the tip end portion thereof. Therefore, the upper beam 23 for the guide frame
The central part of the is semi-fixedly held to the upper beam 8.
本発明に係る脱硝反応装置は、上述のように構成された
もので、従来ケーシング補強柱６に集中していた水平力
を、ガイドフレーム20、21に３分割して作用させること
ができる。また、水平力による荷重でケーシング補強柱
６に作用した力の一部は、第２図にＤ部として示してあ
るストッパ部を通じて、ガイドフレーム20，21、補強梁
25等から成るトラス構造体に伝達され、ガイドフレーム
20，21に作用した荷重と一緒になって第３図のＡ部では
圧縮力、Ｂ部では引張力として基礎11へ伝達される。更
に、触媒層３を挟持すトラス構造体は、低温の上面梁８
および底面梁９に連結されているが、Ａ部およびＢ部で
は上下固定・左右自由、Ｃ部では上下左右固定、Ｄ部で
は上下自由・左右固定となっているで、熱伸びによって
拘束される恐れはない。The denitration reaction device according to the present invention is configured as described above, and the horizontal force, which was conventionally concentrated on the casing reinforcing column 6, can be applied to the guide frames 20, 21 by dividing it into three parts. Further, a part of the force acting on the casing reinforcing column 6 by the load due to the horizontal force is passed through the stopper portion shown as D portion in FIG.
Guide frame transmitted to truss structure consisting of 25 etc.
Together with the loads acting on 20 and 21, they are transmitted to the foundation 11 as a compressive force at the A portion and a tensile force at the B portion in FIG. In addition, the truss structure sandwiching the catalyst layer 3 has a low temperature upper beam 8
Although it is connected to the bottom beam 9, it is fixed vertically and horizontally on the A and B parts, vertically and horizontally fixed on the C part, and vertically and horizontally fixed on the D part, and is restrained by thermal expansion. There is no fear.
発明の効果 以上詳述したように、本発明によれば、ケーシング補強
柱に集中して作用する水平力を、ガイドフレームに分散
させることによって、曲げモーメントを軸力に変化させ
て支持するので、補強柱の断面を大きくすることなく地
震等の水平力に対して十分な強度を得ることのできる脱
硝反応装置が提供される。また、本発明の脱硝反応装置
は熱伸びの影響も受け難いという効果もある。Effects of the Invention As described in detail above, according to the present invention, the bending force is supported by changing the bending moment into an axial force by dispersing the horizontal force concentrated on the casing reinforcing column in the guide frame. Provided is a denitration reactor capable of obtaining sufficient strength against horizontal force such as an earthquake without increasing the cross section of a reinforcing column. Further, the denitration reactor of the present invention has an effect that it is hardly affected by thermal expansion.
第１図は本発明に係る脱硝反応装置の一実施例を示した
要部の概略断面図、第２図は第１図のII部を拡大した部
分拡大図、第３図は第１図のIII部を拡大した部分拡大
図、第４図は従来の脱硝反応装置の側断面図、第５図は
第４図のＶ−Ｖ線に沿う断面の拡大図である。 １……脱硝反応装置本体、２……耐火性保温材、３……
触媒層、６，７……ケーシング補強柱、８……上面梁、
９……底面梁、10……ケーシング、11……基礎、20，21
……ガイドフレーム、23……ガイドフレーム用上部梁、
24……ガイドフレーム用下部梁、25……補強梁、26，27
……支持部材、28，30……ストッパ部材、29……突出部
材。FIG. 1 is a schematic cross-sectional view of an essential part showing an embodiment of a denitration reaction device according to the present invention, FIG. 2 is an enlarged view of a part II of FIG. 1, and FIG. 3 is an enlarged view of FIG. FIG. 4 is a side sectional view of a conventional denitration reactor, and FIG. 5 is an enlarged view of a section taken along line VV in FIG. 1 ... DeNOx reactor main body, 2 ... Fireproof heat insulating material, 3 ...
Catalyst layer, 6, 7 ... Casing reinforcement column, 8 ... Top beam,
9 ... Bottom beam, 10 ... Casing, 11 ... Foundation, 20, 21
...... Guide frame, 23 …… Upper beam for guide frame,
24 …… Lower beam for guide frame, 25 …… Reinforcement beam, 26,27
…… Supporting member, 28,30 …… Stopper member, 29 …… Projecting member.
Claims (1)
梁と底面梁とが連結され、内側に保温材が施工され、保
温材内側に多段に積み重ねられた触媒が複数列配置され
た脱硝反応装置において、前記触媒の少なくとも１列を
挟むように設けた上下に伸びるガイドフレームと、この
ガイドフレームの上下端部を夫々連結するように設けた
ガイドフレーム用上部梁およびガイドフレーム用下部梁
と、前記底面梁と前記ガイドフレームの下端とを連結す
るとともにこの連結位置で底面梁を基礎に支持させる支
持手段と、前記ガイドフレーム用下部梁の略中央部を前
記底面梁に連結する支持柱と、この支持柱の連結位置の
底面梁を前記基礎に対して半固定する第１のストッパ手
段と、前記ガイドフレーム用上部梁の略中央部を前記上
面梁に対して半固定する第２のストッパ手段とを備えた
脱硝反応装置。A denitration reaction in which a top beam and a bottom beam are connected to a casing reinforcing column installed on a foundation, a heat insulating material is applied inside, and a plurality of rows of catalysts stacked in multiple rows are arranged inside the heat insulating material. In the apparatus, a vertically extending guide frame provided so as to sandwich at least one row of the catalyst, an upper beam for a guide frame and a lower beam for a guide frame provided so as to connect upper and lower ends of the guide frame, respectively. Supporting means for connecting the bottom beam and the lower end of the guide frame and supporting the bottom beam on the basis at this connection position; and a supporting column for connecting the substantially central portion of the lower beam for the guide frame to the bottom beam, The first stopper means for semi-fixing the bottom beam at the connecting position of the support column to the foundation, and the substantially central portion of the upper beam for the guide frame are semi-solid with respect to the upper beam. Denitration reactor having a second stopper means for.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61177660A JPH0653210B2 (en) | 1986-07-30 | 1986-07-30 | Denitration reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61177660A JPH0653210B2 (en) | 1986-07-30 | 1986-07-30 | Denitration reactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6336820A JPS6336820A (en) | 1988-02-17 |
| JPH0653210B2 true JPH0653210B2 (en) | 1994-07-20 |
Family
ID=16034874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61177660A Expired - Fee Related JPH0653210B2 (en) | 1986-07-30 | 1986-07-30 | Denitration reactor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0653210B2 (en) |
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-
1986
- 1986-07-30 JP JP61177660A patent/JPH0653210B2/en not_active Expired - Fee Related
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|---|---|
| JPS6336820A (en) | 1988-02-17 |
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