JPH0889754A - Device for injecting gaseous ammonia - Google Patents
Device for injecting gaseous ammoniaInfo
- Publication number
- JPH0889754A JPH0889754A JP6223214A JP22321494A JPH0889754A JP H0889754 A JPH0889754 A JP H0889754A JP 6223214 A JP6223214 A JP 6223214A JP 22321494 A JP22321494 A JP 22321494A JP H0889754 A JPH0889754 A JP H0889754A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- nozzle
- ammonia gas
- gas flow
- ammonia
- 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.)
- Granted
Links
Landscapes
- Treating Waste Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、排ガス脱硝装置等に適
用される流体流路内へのアンモニアガス（ＮＨ3 ）注入
装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for injecting ammonia gas (NH 3 ) into a fluid passage, which is applied to an exhaust gas denitration device or the like.
【０００２】[0002]
【従来の技術】従来、排ガスの脱硝装置等は、排ガス流
路内にＮＨ3 を注入し、拡散を促進させることにより、
ＮＨ3 注入装置の後流に設置する脱硝装置の触媒前面で
ＮＨ3と排ガスの混合比率を均一に近づけることで、効
率のよいＮＯX の浄化を行う。その方法としては以下の
様なものがある。 （１）ＮＨ3 ガスを排ガス流れ方向に対し角度をつけ噴
出することによりＮＨ3ガスの拡散を促進する。 （２）母管によるカルマン渦の発生を利用することによ
り、ＮＨ3 ガスの拡散を促進する。2. Description of the Related Art Conventionally, an exhaust gas denitration device or the like has been constructed by injecting NH 3 into an exhaust gas passage to promote diffusion.
By making the mixing ratio of NH 3 and exhaust gas close to uniform in front of the catalyst of the denitration device installed in the downstream of the NH 3 injection device, the NO x can be efficiently purified. The method is as follows. (1) NH 3 gas is jetted at an angle to the exhaust gas flow direction to promote the diffusion of NH 3 gas. (2) The diffusion of NH 3 gas is promoted by utilizing the generation of Karman vortices by the mother tube.
【０００３】[0003]
【発明が解決しようとする課題】従来の技術のように、
カルマン渦等の母管のウェークから逃れるために、排ガ
ス流れ平行方向に対し角度をつけてアンモニアガスを噴
出して、その拡散を促進させる方法では、流路内を流れ
る排ガスの流量（流速）の変化によりアンモニアガス注
入装置の後流に位置する触媒前面でのアンモニアガスの
濃度分布が大きく変化する。逆にカルマン渦を利用する
ことによりアンモニアガスの拡散を促進させる方法にお
いても、流速の変化により効果が変化する。いずれの場
合も触媒前面でのアンモニアガス濃度分布は、排ガス排
出源の運転により変化する。DISCLOSURE OF THE INVENTION Like the prior art,
In order to escape from the wake of the mother tube such as Karman vortex, ammonia gas is ejected at an angle to the direction parallel to the exhaust gas flow, and in the method of promoting the diffusion, the flow rate (flow velocity) of the exhaust gas flowing in the flow passage is changed. Due to the change, the concentration distribution of ammonia gas on the front surface of the catalyst located downstream of the ammonia gas injection device changes greatly. On the contrary, also in the method of promoting the diffusion of ammonia gas by utilizing the Karman vortex, the effect is changed by the change of the flow velocity. In either case, the ammonia gas concentration distribution in front of the catalyst changes depending on the operation of the exhaust gas emission source.
【０００４】本発明は排ガス流量が変化した時において
も、触媒前面でのアンモニアガス濃度分布が均一となる
アンモニアガス注入装置を提供しようとするものであ
る。An object of the present invention is to provide an ammonia gas injection device in which the ammonia gas concentration distribution on the front surface of the catalyst is uniform even when the exhaust gas flow rate changes.
【０００５】[0005]
【課題を解決するための手段】本発明は上記課題を解決
したものであって、次の特徴を有するアンモニアガス注
入装置に関するものである。 （１）排ガス流路内において、排ガス流に直交して配置
された複数の母管、同母管の側面から突設された複数の
突出管、及び同各突出管の端部において排ガス流の下流
方向に向けて開口するよう設けられたノズルを備え、各
ノズルの中心線と母管側面との距離は母管の外径より大
であり、排ガス流に直交する断面に投影した各ノズルの
位置は互いに隣接する複数の正三角形の各頂点に位置す
るよう配置されている。 （２）上記（１）項に記載のアンモニアガス注入装置に
おいて、ノズルより排ガス流の上流側に排ガス整流装置
を有する。 （３）上記（１）項に記載のアンモニアガス注入装置に
おいて、ノズルより排ガス流の下流側に排ガス・アンモ
ニアガス混合装置を有する。 （４）上記（１）項に記載のアンモニアガス注入装置に
おいて、ノズルより排ガス流の上流側に排ガス整流装置
を有し、ノズルより排ガス流の下流側に排ガス・アンモ
ニアガス混合装置を有する。SUMMARY OF THE INVENTION The present invention solves the above problems and relates to an ammonia gas injection device having the following features. (1) In the exhaust gas passage, a plurality of mother pipes arranged orthogonal to the exhaust gas flow, a plurality of protruding pipes protruding from the side surface of the mother pipe, and the exhaust gas flow at the end of each protruding pipe. The nozzle is provided so as to open toward the downstream direction, the distance between the center line of each nozzle and the side surface of the mother tube is larger than the outer diameter of the mother tube, and each nozzle projected on a cross section orthogonal to the exhaust gas flow. The positions are arranged so as to be located at the vertices of a plurality of equilateral triangles adjacent to each other. (2) In the ammonia gas injection device according to the above item (1), an exhaust gas rectification device is provided on the upstream side of the exhaust gas flow from the nozzle. (3) In the ammonia gas injection device according to the above item (1), an exhaust gas / ammonia gas mixing device is provided on the downstream side of the exhaust gas flow from the nozzle. (4) In the ammonia gas injection device according to the above item (1), the exhaust gas rectifying device is provided upstream of the exhaust gas flow from the nozzle, and the exhaust gas / ammonia gas mixing device is provided downstream of the exhaust gas flow from the nozzle.
【０００６】[0006]
【作用】本発明では、カルマン渦等の母管の影響を逃れ
うる位置に配置したノズルの噴出口が排ガス流れ平行で
下流方向に向いているため、排ガスの流量（流速）が変
化した時でも、アンモニアガス注入装置の後流に位置す
る触媒前面での、個々のノズルによる濃度分布が変化せ
ず、又ノズル噴出口の配置を、流れの垂直断面に投影し
て正三角形頂点位置となる様にしたことにより、安定し
たアンモニアガス濃度分布を触媒前面全体で維持でき、
従来よりも少ないアンモニアガス量と触媒量において安
定した脱硝性能を実現することができる。In the present invention, since the jet outlet of the nozzle arranged at a position where the influence of the mother pipe such as Karman vortex can be escaped is parallel to the exhaust gas flow and is directed in the downstream direction, even when the exhaust gas flow rate (flow velocity) changes. The concentration distribution by individual nozzles does not change in the front surface of the catalyst located downstream of the ammonia gas injection device, and the arrangement of the nozzle jets is projected on the vertical cross section of the flow so that it is located at the apex of the equilateral triangle. By doing so, a stable ammonia gas concentration distribution can be maintained over the entire front surface of the catalyst,
Stable denitration performance can be realized with a smaller amount of ammonia gas and a smaller amount of catalyst than before.
【０００７】排ガス整流装置または排ガス・アンモニア
ガス混合装置を備えたものにおいては、一層のアンモニ
アガスの濃度均一化が図られる。In the case where the exhaust gas rectifying device or the exhaust gas / ammonia gas mixing device is provided, the concentration of the ammonia gas can be further homogenized.
【０００８】[0008]
【実施例】図１は本発明の第１実施例に係るアンモニア
ガス注入装置の正面図である。これは脱硝装置において
排ガスの流れに逆らう方向から見た図であり、ダクトの
断面上におけるアンモニアガス注入母管やノズルの配置
を示したものである。図において、１はアンモニアガス
注入母管、２は同母管から突出して設けられているアン
モニアガス注入ノズルである。母管１はダクトの外部に
設けられているアンモニア発生装置とブロワ（いずれも
図示していない）に連なっている。1 is a front view of an ammonia gas injection device according to a first embodiment of the present invention. This is a view of the denitration device as viewed from the direction against the flow of exhaust gas, and shows the arrangement of the ammonia gas injection mother pipe and nozzles on the cross section of the duct. In the figure, 1 is an ammonia gas injecting mother pipe, and 2 is an ammonia gas injecting nozzle provided so as to project from the same mother pipe. The mother tube 1 is connected to an ammonia generator provided outside the duct and a blower (neither is shown).
【０００９】図２は図１のＡ−Ａ断面図である。これは
１個のノズルを水平面で切った断面を示している。図に
おいて、１は前記の母管、３は同母管から排ガス流に直
交する方向へ突出し、その端部で排ガス流と平行に流れ
の下流方向へ折れ曲った形状を有するＬ字形突出管、４
は同突出管３の先端中央に設けてあるオリフィス、５は
同突出管３の先端部とオリフィスを囲み下流方向へ開口
するキャップである。上記４，５の部分からノズル２が
構成されている。上記ノズルの中心線と上記突出管の付
け根の距離Ｅは、母管１の外径Ｄより大きくしてある。FIG. 2 is a sectional view taken along the line AA of FIG. This shows a cross section of one nozzle cut in a horizontal plane. In the figure, 1 is the above-mentioned mother pipe, 3 is an L-shaped protruding pipe having a shape projecting from the same mother pipe in a direction orthogonal to the exhaust gas flow and being bent at the end thereof in the downstream direction parallel to the exhaust gas flow, Four
Is an orifice provided at the center of the tip of the projecting tube 3, and 5 is a cap that surrounds the tip part of the projecting tube 3 and the orifice and opens in the downstream direction. The nozzle 2 is composed of the above-mentioned portions 4 and 5. The distance E between the center line of the nozzle and the root of the protruding tube is set larger than the outer diameter D of the mother tube 1.
【００１０】再び図１において、ノズル２は母管１の左
右に交互に排ガス流れと直交する方向へ突出管３を突出
させて取付けられており、取付け部は等間隔としてあ
る。また各ノズル２の中心は排ガス流れに直交する断面
上において、互いに隣接する複数の正三角形の頂点の位
置に配置してある。また排ガス流路に母管１を多数設け
る場合には、各母管は等間隔であって、各ノズルの中心
は他の母管のノズルの中心と共に、それぞれ正三角形の
頂点に位置するように配置されている。Referring again to FIG. 1, the nozzles 2 are mounted on the left and right sides of the mother pipe 1 alternately with the protruding pipes 3 protruding in a direction orthogonal to the exhaust gas flow, and the mounting portions are arranged at equal intervals. Further, the centers of the nozzles 2 are arranged at the positions of the vertices of a plurality of equilateral triangles adjacent to each other on the cross section orthogonal to the exhaust gas flow. When a large number of mother pipes 1 are provided in the exhaust gas passage, each mother pipe is equally spaced, and the center of each nozzle is located at the apex of an equilateral triangle together with the centers of nozzles of other mother pipes. It is arranged.
【００１１】図３は上記実施例の排ガス流路における母
管およびノズルの設置位置を示す斜視図である。図にお
いて６は排ガス流路、７は触媒であり、母管１とノズル
２は触媒７より上流側に設けられている。このように配
置することによって、排ガスの流量変化によっても触媒
６の前面におけるアンモニアガスの濃度分布の変化はな
くなる。FIG. 3 is a perspective view showing the installation positions of the mother pipe and the nozzle in the exhaust gas passage of the above embodiment. In the figure, 6 is an exhaust gas flow path, 7 is a catalyst, and the mother pipe 1 and the nozzle 2 are provided upstream of the catalyst 7. With such an arrangement, the concentration distribution of ammonia gas on the front surface of the catalyst 6 does not change even if the flow rate of exhaust gas changes.
【００１２】図４は本発明の第２実施例に係るアンモニ
アガス注入装置の斜視図である。８は、ノズル２の上流
側に設けられた排ガス整流装置である。上記以外の構成
は第１実施例と同じである。本実施例では、アンモニア
ガス噴出直後のノズル２毎の初期濃度を均一に近づける
ことが可能となる。FIG. 4 is a perspective view of an ammonia gas injection device according to a second embodiment of the present invention. Reference numeral 8 is an exhaust gas rectifying device provided on the upstream side of the nozzle 2. The configuration other than the above is the same as that of the first embodiment. In this embodiment, it is possible to make the initial concentrations of the nozzles 2 immediately after the ejection of ammonia gas close to uniform.
【００１３】図５は本発明の第３実施例に係るアンモニ
アガス注入装置の斜視図である。９はノズル２と触媒７
との間に設けられた排ガス・アンモニアガス混合装置で
ある。上記以外の部分は第１実施例と同じである。本実
施例では、触媒７の前面におけるアンモニアガス濃度の
バラツキを更に少なくすることが可能となる。FIG. 5 is a perspective view of an ammonia gas injection device according to a third embodiment of the present invention. 9 is the nozzle 2 and the catalyst 7
It is an exhaust gas / ammonia gas mixing device provided between and. The parts other than the above are the same as those in the first embodiment. In this embodiment, it is possible to further reduce the variation in the ammonia gas concentration on the front surface of the catalyst 7.
【００１４】図６は本発明の第４実施例に係るアンモニ
アガス注入装置の斜視図である。本例はノズル２の上流
側に排ガス整流装置、ノズル２の下流側に排ガス・アン
モニアガス混合装置９と触媒７をこの順に配置したもの
である。上記以外の構成は第１実施例と同じである。本
例においては、ノズル毎の初期濃度を均一にし、又後流
でアンモニアガスと排ガスの混合を促進するため、触媒
７の前面におけるアンモニアガス濃度のバラツキを更に
少なくすることが可能となる。FIG. 6 is a perspective view of an ammonia gas injection device according to a fourth embodiment of the present invention. In this example, an exhaust gas rectifying device is arranged on the upstream side of the nozzle 2, and an exhaust gas / ammonia gas mixing device 9 and a catalyst 7 are arranged on the downstream side of the nozzle 2 in this order. The configuration other than the above is the same as that of the first embodiment. In this example, since the initial concentration of each nozzle is made uniform and the mixing of the ammonia gas and the exhaust gas is promoted in the downstream, it is possible to further reduce the variation of the ammonia gas concentration on the front surface of the catalyst 7.
【００１５】図７は上記各実施例に用いたノズルの効果
を説明するための排ガス流路の平面図であり、第１実施
例のノズルと触媒の配置によって例示してある。図８は
同様な配置における従来技術を示す排ガス流路の平面図
である。各図には触媒前面におけるノズル１個当りのア
ンモニアガスの濃度分布Ａ、および触媒前面における総
合的なアンモニアガスの濃度分布Ｂが示してある。各図
において、（ａ）はガス流速が設計流速Ｕｇの場合、
（ｂ）はガス流速が０．８７Ｕｇ、すなわちガス流速が
設計流速より低い場合を示している。FIG. 7 is a plan view of an exhaust gas passage for explaining the effect of the nozzle used in each of the above-mentioned embodiments, which is illustrated by the arrangement of the nozzle and the catalyst in the first embodiment. FIG. 8 is a plan view of an exhaust gas passage showing a conventional technique in the same arrangement. In each drawing, the concentration distribution A of the ammonia gas per nozzle on the front surface of the catalyst and the total concentration distribution B of the ammonia gas on the front surface of the catalyst are shown. In each figure, (a) shows that when the gas flow velocity is the design flow velocity Ug,
(B) shows the case where the gas flow velocity is 0.87 Ug, that is, the gas flow velocity is lower than the design flow velocity.
【００１６】排ガス流れ平行方向に対し噴出方向に角度
をつけた従来のノズルでは、図８に示すとおり、排ガス
流速の変化によって、触媒前面でのノズル毎のアンモニ
アガス到達位置が変化するため、設計流速以外の時はア
ンモニアガス濃度のばらつき幅が大きくなり、結果とし
て注入アンモニアガス量を理想状態よりも多くしなけれ
ばならない。これに対し排ガスの流れ方向に対し噴出方
向を平行にしたノズルにおいては、図７に示すとおり、
排ガスの流速変化による触媒前面の濃度分布に変化はな
く、アンモニアガス濃度のばらつき幅も設計流速時と同
じため、従来よりも少ないアンモニアガス注入量とする
ことが可能となる。さらに、触媒量も少なくして、従来
と同等の脱硝性能を達成することが可能となる。As shown in FIG. 8, the conventional nozzle in which the jet direction is angled with respect to the direction parallel to the exhaust gas flow is designed because the ammonia gas arrival position for each nozzle on the front surface of the catalyst changes due to the change in the exhaust gas flow velocity. When the flow rate is other than the flow velocity, the variation range of the ammonia gas concentration becomes large, and as a result, the injected ammonia gas amount must be larger than the ideal state. On the other hand, in the nozzle in which the jet direction is parallel to the flow direction of the exhaust gas, as shown in FIG.
The concentration distribution on the front surface of the catalyst does not change due to the change in the flow rate of the exhaust gas, and the variation range of the ammonia gas concentration is the same as that at the design flow rate, so that the amount of injected ammonia gas can be made smaller than in the conventional case. Further, it is possible to achieve the same denitration performance as the conventional one by reducing the amount of catalyst.
【００１７】以上詳述したように、本実施例のアンモニ
アガス注入装置においては次の効果がある。 （１）アンモニアガスの噴出方向を排ガスの流れに対
し、平行かつ下流方向とし、かつ、各ノズルの中心を互
いに隣接する正三角形の頂点位置として均等間隔配置と
しているので、排ガスの流速変化に対して、アンモニア
ガスと排ガスの混合効果を均一とすることが可能とな
る。 （２）噴出するアンモニアガスの触媒前面におけるノズ
ル１個当りの濃度分布の中心がノズル噴出口と同一の配
置となるので、触媒前面におけるアンモニアガス濃度分
布を容易に予想できる。 （３）触媒前面におけるアンモニアガスの濃度のばらつ
きを排ガス排出源の運転による排ガス流速の変化にかか
わらず均一とできるので、注入アンモニアガス量の減
少、触媒量の減少が可能となる。As described in detail above, the ammonia gas injection apparatus of this embodiment has the following effects. (1) Since the ejecting direction of the ammonia gas is parallel to and downstream from the exhaust gas flow, and the centers of the nozzles are arranged at equal vertex positions of the regular triangles adjacent to each other, the exhaust gas flow rate changes As a result, the mixing effect of the ammonia gas and the exhaust gas can be made uniform. (2) Since the center of the concentration distribution of the ejected ammonia gas per nozzle on the front surface of the catalyst is the same as the nozzle outlet, the concentration distribution of ammonia gas on the front surface of the catalyst can be easily predicted. (3) Since variations in the concentration of ammonia gas on the front surface of the catalyst can be made uniform regardless of changes in the exhaust gas flow rate due to the operation of the exhaust gas emission source, the amount of injected ammonia gas and the amount of catalyst can be reduced.
【００１８】[0018]
【発明の効果】本発明のアンモニアガス注入装置は、排
ガス流路内において、排ガス流に直交して配置された複
数の母管、同母管の側面から突設された複数の突出管、
及び同各突出管の端部において排ガス流の下流方向に向
けて開口するよう設けられたノズルを備え、各ノズルの
中心線と母管側面との距離は母管の外径より大であり、
排ガス流に直交する断面に投影した各ノズルの位置は互
いに隣接する複数の正三角形の各頂点に位置するよう配
置されており、あるいはさらにノズルより排ガス流の上
流側に排ガス整流装置、あるいはさらにノズルより排ガ
ス流の下流側に排ガス・アンモニアガス混合装置を有す
るので、触媒前面において均一なアンモニアガス濃度分
布を実現することができ、アンモニアガス注入量の減
少、触媒量の減少を図ることができる。EFFECTS OF THE INVENTION The ammonia gas injection device of the present invention comprises a plurality of mother pipes arranged orthogonally to the exhaust gas flow in the exhaust gas passage, a plurality of projecting pipes protruding from the side surface of the mother pipe,
And a nozzle provided so as to open toward the downstream direction of the exhaust gas flow at the end of each protruding pipe, the distance between the center line of each nozzle and the side face of the mother pipe is larger than the outer diameter of the mother pipe,
The position of each nozzle projected on the cross section orthogonal to the exhaust gas flow is arranged so as to be located at each apex of a plurality of equilateral triangles adjacent to each other, or further on the upstream side of the exhaust gas flow from the nozzle, an exhaust gas rectifying device, or further nozzles. Since the exhaust gas / ammonia gas mixing device is provided on the downstream side of the exhaust gas flow, a uniform ammonia gas concentration distribution can be realized on the front surface of the catalyst, and the ammonia gas injection amount and the catalyst amount can be reduced.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の第１実施例に係るアンモニアガス注入
装置の正面図。FIG. 1 is a front view of an ammonia gas injection device according to a first embodiment of the present invention.
【図２】図１のＡ−Ａ断面図。FIG. 2 is a sectional view taken along line AA of FIG.
【図３】上記実施例の排ガス流路における母管およびノ
ズルの設置位置を示す斜視図。FIG. 3 is a perspective view showing installation positions of a mother pipe and a nozzle in the exhaust gas passage of the above embodiment.
【図４】本発明の第２実施例に係るアンモニアガス注入
装置の斜視図。FIG. 4 is a perspective view of an ammonia gas injection device according to a second embodiment of the present invention.
【図５】本発明の第３実施例に係るアンモニアガス注入
装置の斜視図。FIG. 5 is a perspective view of an ammonia gas injection device according to a third embodiment of the present invention.
【図６】本発明の第４実施例に係るアンモニアガス注入
装置の斜視図。FIG. 6 is a perspective view of an ammonia gas injection device according to a fourth embodiment of the present invention.
【図７】上記各実施例に用いたノズルの効果を説明する
ための排ガス流路の平面図。FIG. 7 is a plan view of an exhaust gas passage for explaining the effect of the nozzle used in each of the above-described embodiments.
【図８】従来技術における排ガス流路の平面図。FIG. 8 is a plan view of an exhaust gas passage according to a conventional technique.
１ 母管 ２ ノズル ３ Ｌ字形突出管 ４ オリフィス ５ キャップ ６ 排ガス流路 ７ 触媒 ８ 排ガス整流装置 ９ 排ガス混合装置 １０ アンモニアガス流の中心線 1 Mother Tube 2 Nozzle 3 L-Shaped Tube 4 Orifice 5 Cap 6 Exhaust Gas Flow Path 7 Catalyst 8 Exhaust Gas Rectifier 9 Exhaust Gas Mixer 10 Center Line of Ammonia Gas Flow
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ０１Ｄ 53/36 １０１ Ｂ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI technical display location B01D 53/36 101 B
Claims (4)
して配置された複数の母管、同母管の側面から突設され
た複数の突出管、及び同各突出管の端部において排ガス
流の下流方向に向けて開口するよう設けられたノズルを
備え、各ノズルの中心線と母管側面との距離は母管の外
径より大であり、排ガス流に直交する断面に投影した各
ノズルの位置は互いに隣接する複数の正三角形の各頂点
に位置するよう配置されていることを特徴とするアンモ
ニアガス注入装置。1. In the exhaust gas flow path, a plurality of mother pipes arranged orthogonal to the exhaust gas flow, a plurality of projecting pipes projecting from a side surface of the mother pipe, and exhaust gas at end portions of the respective projecting pipes. The nozzle provided so as to open toward the downstream direction of the flow, the distance between the center line of each nozzle and the side surface of the mother pipe is larger than the outer diameter of the mother pipe, and each projected on the cross section orthogonal to the exhaust gas flow. The ammonia gas injecting device, wherein the nozzles are arranged so as to be located at respective vertices of a plurality of equilateral triangles adjacent to each other.
流装置を有することを特徴とする請求項１に記載のアン
モニアガス注入装置。2. The ammonia gas injection device according to claim 1, further comprising an exhaust gas rectifying device upstream of the exhaust gas flow from the nozzle.
アンモニアガス混合装置を有することを特徴とする請求
項１に記載のアンモニアガス注入装置。3. Exhaust gas on the downstream side of the exhaust gas flow from the nozzle
The ammonia gas injection device according to claim 1, further comprising an ammonia gas mixing device.
流装置を有し、ノズルより排ガス流の下流側に排ガス・
アンモニアガス混合装置を有することを特徴とする請求
項１に記載のアンモニアガス注入装置。4. An exhaust gas rectifying device is provided on the upstream side of the exhaust gas flow from the nozzle, and exhaust gas is provided on the downstream side of the exhaust gas flow from the nozzle.
The ammonia gas injection device according to claim 1, further comprising an ammonia gas mixing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22321494A JP3207684B2 (en) | 1994-09-19 | 1994-09-19 | Ammonia gas injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22321494A JP3207684B2 (en) | 1994-09-19 | 1994-09-19 | Ammonia gas injection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0889754A true JPH0889754A (en) | 1996-04-09 |
| JP3207684B2 JP3207684B2 (en) | 2001-09-10 |
Family
ID=16794585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22321494A Expired - Fee Related JP3207684B2 (en) | 1994-09-19 | 1994-09-19 | Ammonia gas injection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3207684B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0889759A (en) * | 1994-09-19 | 1996-04-09 | Mitsubishi Heavy Ind Ltd | Device for injecting gaseous ammonia |
| JPH1057764A (en) * | 1996-08-19 | 1998-03-03 | Hitachi Zosen Corp | Ammonia diffusion accelerating device in waste gas denitrification system |
| JPH11347367A (en) * | 1998-06-09 | 1999-12-21 | Babcock Hitachi Kk | Exhaust gas denitrifying apparatus |
| JP2001149747A (en) * | 1999-12-01 | 2001-06-05 | Hitachi Plant Eng & Constr Co Ltd | Gaseous ammonia injection device |
| JP2010264400A (en) * | 2009-05-15 | 2010-11-25 | Ihi Corp | Denitrification apparatus |
| JP2017150790A (en) * | 2016-02-26 | 2017-08-31 | 三菱日立パワーシステムズ株式会社 | Exhaust duct and boiler, and method of removing solid particulate |
| CN107875847A (en) * | 2017-12-13 | 2018-04-06 | 山西大学 | A kind of ammonia nitrogen mixing arrangement for apparatus of thermo-electric power boiler spray ammonia system |
| JP2019536938A (en) * | 2016-12-05 | 2019-12-19 | アークイス アンド アークイス エス アー | Apparatus and method for injecting mixing gas into exhaust line |
-
1994
- 1994-09-19 JP JP22321494A patent/JP3207684B2/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0889759A (en) * | 1994-09-19 | 1996-04-09 | Mitsubishi Heavy Ind Ltd | Device for injecting gaseous ammonia |
| JPH1057764A (en) * | 1996-08-19 | 1998-03-03 | Hitachi Zosen Corp | Ammonia diffusion accelerating device in waste gas denitrification system |
| JPH11347367A (en) * | 1998-06-09 | 1999-12-21 | Babcock Hitachi Kk | Exhaust gas denitrifying apparatus |
| JP2001149747A (en) * | 1999-12-01 | 2001-06-05 | Hitachi Plant Eng & Constr Co Ltd | Gaseous ammonia injection device |
| JP2010264400A (en) * | 2009-05-15 | 2010-11-25 | Ihi Corp | Denitrification apparatus |
| JP2017150790A (en) * | 2016-02-26 | 2017-08-31 | 三菱日立パワーシステムズ株式会社 | Exhaust duct and boiler, and method of removing solid particulate |
| JP2019536938A (en) * | 2016-12-05 | 2019-12-19 | アークイス アンド アークイス エス アー | Apparatus and method for injecting mixing gas into exhaust line |
| CN107875847A (en) * | 2017-12-13 | 2018-04-06 | 山西大学 | A kind of ammonia nitrogen mixing arrangement for apparatus of thermo-electric power boiler spray ammonia system |
| CN107875847B (en) * | 2017-12-13 | 2023-12-29 | 山西大学 | Ammonia nitrogen mixing device for thermal power boiler ammonia spraying system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3207684B2 (en) | 2001-09-10 |
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