JPS641168B2 - - Google Patents
Info
- Publication number
- JPS641168B2 JPS641168B2 JP59072244A JP7224484A JPS641168B2 JP S641168 B2 JPS641168 B2 JP S641168B2 JP 59072244 A JP59072244 A JP 59072244A JP 7224484 A JP7224484 A JP 7224484A JP S641168 B2 JPS641168 B2 JP S641168B2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- pipe
- fine powder
- gas pipe
- blowing pipe
- 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
Links
Landscapes
- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は乾式有害ガス除去装置に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a dry harmful gas removal device.
従来例の構成とその問題点
ボイラや焼却炉から排出される高温排ガス中に
は、SOx（硫黄酸化物）、HCIなどの有害物質が含
まれており、公害対策上これら有害物質を除去す
ることが義務づけられている。従来、上記排ガス
中に、CaO、CaCO3、Ca（OH）2、MgOなどの微
粉体を吹き込んで乾式で脱SOx脱HCIなどの反応
により、有害物質を除去していた。ところで、上
記微粉体を排ガス中に吹き込むのに空気輸送が用
いられている。即ち、一端が送風機に接続された
微粉体の吹込み管の他端を排ガス管に接続すると
共に、この吹込み管途中に設けられたエジエクタ
を介して貯槽内の微粉体を吹込み管内に引込み、
そしてこの吹込み管を介して排ガス管内に微粉体
を吹き込むようにしている。しかし、上記のもの
によると、微粉体としてJIS特号などを使用して
いるが、貯槽内や吹込み管内で凝集してしまい、
脱SOx、脱HCIなどの反応が十分に行なわれない
という欠点があつた。ところで、既に微粉体の粒
径が小さいほど反応効率が良いことが知られてい
る。本発明者等は、未反応殻モデルを用いて計算
した除去率と実験による除去率とを比較してこの
ことを確かめた。例えば計算値が52〜55％であつ
たのに対して実験値が51％であつた。Conventional configuration and its problems High-temperature exhaust gas discharged from boilers and incinerators contains harmful substances such as SOx (sulfur oxides) and HCI, and it is necessary to remove these harmful substances as a pollution control measure. is required. Conventionally, harmful substances have been removed by blowing fine powder such as CaO, CaCO 3 , Ca(OH) 2 , MgO, etc. into the exhaust gas and performing dry reactions such as removal of SOx and removal of HCI. Incidentally, pneumatic transport is used to blow the fine powder into the exhaust gas. That is, one end of a fine powder blowing pipe is connected to a blower, and the other end is connected to an exhaust gas pipe, and the fine powder in a storage tank is drawn into the blowing pipe through an ejector provided in the middle of this blowing pipe. ,
Fine powder is blown into the exhaust gas pipe through this blowing pipe. However, according to the above, JIS special grade etc. are used as fine powder, but it aggregates in the storage tank and blowing pipe.
The drawback was that reactions such as SOx removal and HCI removal were not carried out sufficiently. By the way, it is already known that the smaller the particle size of fine powder, the better the reaction efficiency. The present inventors confirmed this by comparing the removal rate calculated using the unreacted shell model and the experimental removal rate. For example, the calculated value was 52-55%, whereas the experimental value was 51%.
発明の目的
そこで、本発明は上記の点に鑑み、凝集した微
粉体を細かく分散して反応効率を向上させ得る乾
式有害ガス除去装置を提供することを目的とす
る。OBJECTS OF THE INVENTION In view of the above points, an object of the present invention is to provide a dry harmful gas removal device that can finely disperse aggregated fine powder and improve reaction efficiency.
発明の構成
上記目的を達成するため、本発明の乾式有害ガ
ス除去装置は、排ガス管と、一端が上記排ガス管
に接続されると共に他端が送風機に接続された微
粉体の吹込み管と、該吹込み管途中に設けられる
と共に貯槽からの微粉体を吸い込むためのエジエ
クタとから成る乾式有害ガス除去装置において、
上記吹込み管の排ガス管近傍に、凝集した微粉体
を分散させる分散装置を設け、上記吹込み管と排
ガス管との接続部に、吹込み管に連通されて排ガ
ス管の周囲所定間隔ごとに開口する複数の枝管を
設け、上記排ガス管の吹込み管接続部下流側に微
粉体拡散用の流路の絞り部を設けたものである。Structure of the Invention In order to achieve the above object, the dry harmful gas removal device of the present invention includes: an exhaust gas pipe; a fine powder blowing pipe whose one end is connected to the exhaust gas pipe and the other end is connected to a blower; A dry harmful gas removal device comprising an ejector provided in the middle of the blowing pipe and for sucking fine powder from the storage tank,
A dispersing device for dispersing the aggregated fine powder is provided near the exhaust gas pipe of the blowing pipe, and is connected to the blowing pipe and distributed at predetermined intervals around the exhaust gas pipe at the connection between the blowing pipe and the exhaust gas pipe. A plurality of open branch pipes are provided, and a constricted part of the flow path for fine powder diffusion is provided downstream of the blowing pipe connection part of the exhaust gas pipe.
実施例と作用
以下、本発明の一実施例を第１図および第２図
に基づいて説明する。１はSOx、HClなどの有害
物質を含む排ガスを矢印Ａ方向に流す排ガス管で
ある。２は一端が上記排ガス管１に接続されると
共に他端が脱湿器（又は加熱器）３を介して送風
機４に接続された微粉体の吹込み管で、脱湿器３
より下流の途中にはエジエクタ５が設けられてい
る。排ガス管１と吹込み管２の接続部には、第２
図に示すように、吹込み管２に環状管１２を介し
て連通されて、排ガス管１の周囲に一定間隔ごと
に開口する枝管１３が配設される。６は反応剤で
ある微粉体（例えばCaO、CaCO3、Ca（OH）2、
MgOなど）の貯槽で、その下部には、エジエク
タ５に微粉体を定量づつ供給するためのテーブル
フイーダ７、ロータリバルブ８等より成る定量切
出装置９が設けられている。１０は上記吹込み管
２途中の排ガス管１近傍に（できるだけ排ガス管
寄りに設けるのが好ましい）設けられた分散装置
の一例であるベンチユリー管（例えばオリフイス
でもよい）で、貯槽６内又は吹込み管２内で凝集
した微粉体を分散させるためのものである。そし
て、更に上記排ガス管１途中にしかも吹込み管２
接続箇所より下流部には微粉体拡散用の絞り部の
一例であるベンチユリー管（例えばオリフイス）
１１が設けられている。Embodiment and Operation An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. 1 is an exhaust gas pipe through which exhaust gas containing harmful substances such as SOx and HCl flows in the direction of arrow A. Reference numeral 2 denotes a fine powder blowing pipe whose one end is connected to the exhaust gas pipe 1 and the other end is connected to a blower 4 via a dehumidifier (or heater) 3.
An ejector 5 is provided further downstream. At the connection between the exhaust gas pipe 1 and the blowing pipe 2, there is a second
As shown in the figure, branch pipes 13 are disposed that communicate with the blow pipe 2 via an annular pipe 12 and open at regular intervals around the exhaust gas pipe 1. 6 is a fine powder that is a reactant (e.g. CaO, CaCO 3 , Ca(OH) 2 ,
This is a storage tank for MgO (MgO, etc.), and at its lower part, there is provided a metering cutting device 9 consisting of a table feeder 7, a rotary valve 8, etc. for supplying fine powder to the ejector 5 in metered quantities. Reference numeral 10 denotes a ventilee pipe (for example, an orifice) which is an example of a dispersion device installed near the exhaust gas pipe 1 in the middle of the above-mentioned blowing pipe 2 (preferably installed as close to the exhaust gas pipe as possible). This is for dispersing the fine powder that has aggregated within the tube 2. Furthermore, in the middle of the exhaust gas pipe 1, there is also a blowing pipe 2.
Downstream from the connection point, there is a ventilee tube (e.g. orifice), which is an example of a constriction part for dispersing fine powder.
11 are provided.
次に作用について説明する。 Next, the effect will be explained.
送風機４によつて吹込み管２内に空気が送込ま
れると、エジエクタ５を介して微粉体が吹込み管
２内に吸い込まれる。そして、吸い込まれた微粉
体は途中で凝集して塊りになる（貯槽内で既に凝
集している場合もある）が、ベンチユリー管１０
の所で一次粒子（元の細かい粒子）近くまで細か
く分散されて枝管１３からほぼ均等に排ガス管１
内に吹込まれる。そして、更に排ガス管１内に吹
き込まれた微粉体は排ガス管１途中のベンチユリ
ー管１１の所で排ガス中に均一に拡散される。な
お、上記ベンチユリー管１１内を流れる排ガス速
度は例えば20〜40m／secの範囲である。 When air is sent into the blowing pipe 2 by the blower 4, fine powder is sucked into the blowing pipe 2 via the ejector 5. Then, the fine powder that is sucked in aggregates and becomes a lump on the way (sometimes it has already aggregated in the storage tank), but the Ventury tube 10
The particles are finely dispersed close to the primary particles (original fine particles) and are distributed almost evenly from the branch pipe 13 to the exhaust gas pipe 1.
blown inside. Further, the fine powder blown into the exhaust gas pipe 1 is uniformly diffused into the exhaust gas at a ventilary tube 11 in the middle of the exhaust gas pipe 1. Note that the velocity of the exhaust gas flowing inside the ventilate tube 11 is, for example, in the range of 20 to 40 m/sec.
このように、吹込み管２途中に解砕用のベンチ
ユリー管１０を設けたので、排ガス管内に吹き込
まれる微粉体の凝集体が分散されて細かい粒子と
なり、そして枝管１３によつて排ガス管１内に均
一に供給されて脱SOx、脱HCl等の反応が十分に
行われ、さらに排ガス管１の吹込み管２接続部下
流側のベンチユリー管１０によつて微粉粒子が一
様に拡散され、再度凝集されることなく、更に反
応効果が向上される。 In this way, since the ventilator tube 10 for crushing is provided in the middle of the blowing pipe 2, the fine powder aggregates blown into the exhaust gas pipe are dispersed and become fine particles, and then the branch pipe 13 allows the fine powder to be blown into the exhaust gas pipe 1. The fine powder particles are uniformly supplied into the interior of the exhaust gas pipe 1, and reactions such as SOx removal and HCl removal are sufficiently performed. The reaction effect is further improved without being aggregated again.
上記実施例では排ガス管１に対して枝管１３を
垂直に接続したが、第３図に示すように、上記枝
管１３を排ガス管１に対して斜めに接続して、排
ガス管１内に旋回流でもつて微粉体を吹き込むよ
うにしてもよく、また第４図に示すように、微粉
体吹込み管２及び上記枝管１３の両方に解砕装置
１０，１０′を設けるようにしてもよい。 In the above embodiment, the branch pipe 13 was connected vertically to the exhaust gas pipe 1, but as shown in FIG. The fine powder may be blown in with a swirling flow, or, as shown in FIG. good.
発明の効果
以上に述べたごとく本発明によれば、分散装置
により凝集した微粉体が分散されて複数の枝管か
ら排ガス管内に均等に吹き込まれ、さらに絞り部
により排ガス管内に均一に拡散されるので、微粉
体と排ガスの接触面積が増加し、微粉粒子が再度
凝集することなく、有害物質の除去反応効率を大
幅に向上できる。Effects of the Invention As described above, according to the present invention, the aggregated fine powder is dispersed by the dispersion device and evenly blown into the exhaust gas pipe from the plurality of branch pipes, and further uniformly diffused into the exhaust gas pipe by the constriction part. Therefore, the contact area between the fine powder and the exhaust gas increases, and the reaction efficiency for removing harmful substances can be greatly improved without the fine powder particles coagulating again.
第１図および第２図は本発明の一実施例を示
し、第１図は乾式有害ガス除去装置の概略構成
図、第２図は排ガス管と吹込み管の接続部を示す
拡大断面図、第３図および第４図はそれぞれ排ガ
ス管と吹込み管の接続部の他の実施例を示す拡大
断面図である。
１…排ガス管、２…吹込み管、５…エジエク
タ、１０，１０′…ベンチユリー管（分散装置）、
１１…ベンチユリー管（絞り部）、１３…枝管。
1 and 2 show one embodiment of the present invention, FIG. 1 is a schematic configuration diagram of a dry harmful gas removal device, FIG. 2 is an enlarged sectional view showing the connection between the exhaust gas pipe and the blowing pipe, 3 and 4 are enlarged cross-sectional views showing other embodiments of the connection between the exhaust gas pipe and the blowing pipe, respectively. 1...Exhaust gas pipe, 2...Blowing pipe, 5...Ejector, 10, 10'...Venture pipe (dispersion device),
11... Venture pipe (throttled part), 13... Branch pipe.
Claims (1)
ると共に他端が送風機に接続された微粉体の吹込
み管と、該吹込み管途中に設けられると共に貯槽
からの微粉体を吸い込むためのエジエクタとから
成る乾式有害ガス除去装置において、上記吹込み
管の排ガス管近傍に、凝集した微粉体を分散させ
る分散装置を設け、上記吹込み管と排ガス管との
接続部に、吹込み管に連通されて排ガス管の周囲
所定間隔ごとに開口する複数の枝管を設け、上記
排ガス管の吹込み管接続部下流側に微粉体拡散用
の流路の絞り部を設けたことを特徴とする乾式有
害ガス除去装置。1 An exhaust gas pipe, a fine powder blowing pipe whose one end is connected to the exhaust gas pipe and the other end is connected to a blower, and an ejector provided in the middle of the blowing pipe and for sucking the fine powder from the storage tank. A dry type harmful gas removal device consisting of a dispersion device for dispersing aggregated fine powder is provided near the exhaust gas pipe of the blowing pipe, and a dispersion device for dispersing aggregated fine powder is provided at the connection between the blowing pipe and the exhaust gas pipe, and the dispersing device is connected to the blowing pipe. a plurality of branch pipes opened at predetermined intervals around the exhaust gas pipe, and a constricted part of the flow path for dispersing fine powder is provided downstream of the connection part of the blowing pipe of the exhaust gas pipe. Harmful gas removal equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59072244A JPS60216830A (en) | 1984-04-10 | 1984-04-10 | Dry harmful gas removal equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59072244A JPS60216830A (en) | 1984-04-10 | 1984-04-10 | Dry harmful gas removal equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60216830A JPS60216830A (en) | 1985-10-30 |
| JPS641168B2 true JPS641168B2 (en) | 1989-01-10 |
Family
ID=13483681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59072244A Granted JPS60216830A (en) | 1984-04-10 | 1984-04-10 | Dry harmful gas removal equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60216830A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4440796A1 (en) * | 1994-11-17 | 1996-05-23 | Kurt Tonk | Process for sucking and admixing an additive into a fluid flow and device for carrying out the process |
| KR100781945B1 (en) | 2006-09-06 | 2007-12-04 | 백효정 | Portable red clay spreader for red tide control |
| FR2937888B1 (en) * | 2008-10-31 | 2011-08-19 | Solvay | DEVICE AND METHOD FOR DISPENSING A FLUID. |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6038024A (en) * | 1983-08-10 | 1985-02-27 | Nippon Kokan Kk <Nkk> | Method for removing hydrogen chloride from exhaust gas |
-
1984
- 1984-04-10 JP JP59072244A patent/JPS60216830A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60216830A (en) | 1985-10-30 |
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