JPH0330810A - Method and apparatus for removing dust from gas - Google Patents
Method and apparatus for removing dust from gasInfo
- Publication number
- JPH0330810A JPH0330810A JP16259489A JP16259489A JPH0330810A JP H0330810 A JPH0330810 A JP H0330810A JP 16259489 A JP16259489 A JP 16259489A JP 16259489 A JP16259489 A JP 16259489A JP H0330810 A JPH0330810 A JP H0330810A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- dust
- liquid
- exhaust gas
- water
- 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.)
- Pending
Links
- 239000000428 dust Substances 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000007788 liquid Substances 0.000 claims description 36
- 238000007664 blowing Methods 0.000 claims description 13
- 239000007921 spray Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract description 2
- 238000005422 blasting Methods 0.000 abstract 1
- 239000006185 dispersion Substances 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
Landscapes
- Separation Of Particles Using Liquids (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、液とガスとの接触により、例えば石炭たきボ
イラーからの排気ガス等のごとく、ぽい塵を含むガスを
液中に吹込んで微細気泡を発生させて気泡層を生成させ
、微細気泡によりガスからばい塵を除去するガスの除塵
方法及びその装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention is a method of blowing a gas containing fine dust into a liquid, such as exhaust gas from a coal-fired boiler, by contacting a liquid with a gas. The present invention relates to a method and apparatus for removing dust from gas by generating bubbles to form a bubble layer and removing dust from the gas using fine bubbles.
[従来の技術]
湿式等の集塵装置における液とガスとの接触により、連
続して流れているガス体から、そのガスに含まれるばい
塵等を除去する方法及び装置は、そのガス体の中に液を
スプレーする液分散型のものと、気泡塔などのごとく液
中にガスを気泡として分散させるガス分散型のものとに
大別される。[Prior Art] A method and a device for removing soot and dust contained in a continuously flowing gas by contacting a liquid with a gas in a wet type dust collector etc. There are two main types: liquid dispersion type, in which liquid is sprayed, and gas dispersion type, in which gas is dispersed as bubbles in liquid, such as in a bubble column.
そこで従来、集塵用等のごとく大量のガスを処理するた
めの高性能の湿式集塵機として、液分散形のものが実用
されてきたが、一方、気液の接触率は、その運転条件に
もよるが、一般にガス分散形の方がよいといわれている
。So far, liquid dispersion type dust collectors have been put into practical use as high-performance wet dust collectors for processing large amounts of gas, such as for dust collection, but on the other hand, the gas-liquid contact rate depends on the operating conditions. However, it is generally said that the gas dispersion type is better.
このようなガス分散形のものとしては、従来気液接触装
置が開発されており、これは容器に入れた液中に、側面
にガスの噴出可能な小孔を多数設けた竪型または横型の
ドラムを高速回転させ、その小孔から吸出されたガスが
微細で均一な大きさの微細気泡となって水中に分散する
ことになり、その微細気泡により除塵を行なうものや、
ドラムを高速にて液面に衝突させるものなどがある。Conventionally, gas-liquid contact devices have been developed as gas dispersion devices, which are vertical or horizontal devices that have many small holes on the sides that allow gas to be ejected into the liquid contained in the container. The drum is rotated at high speed, and the gas sucked out through the small holes becomes fine, uniformly sized microbubbles and disperses in the water, and the microbubbles are used to remove dust.
There are some that make the drum collide with the liquid surface at high speed.
しかしながら、上記の場合、回転ドラムという大きな可
動部分があるので、それに応じたメインテナンスが必要
であり、かつ大きな所要動力を要するので、ランニング
コストが費むという問題があり、特に横型ドラムの場合
には、ドラムの回転軸が容器の隔壁を貫通する部分で液
洩れの問題もあり、シール部が複雑になるという欠点が
ある。However, in the above case, since there is a large moving part called the rotating drum, maintenance is required accordingly, and a large amount of power is required, so there is a problem of high running costs, especially in the case of a horizontal drum. However, there is also the problem of liquid leakage at the part where the rotating shaft of the drum penetrates the partition wall of the container, and the sealing part is complicated.
更に、上記のガス分散型の気液接触装置では、脱塵率を
制御することが難かしく、かつそのような考慮ははられ
れていない。また、ドラムを高速にて液面に衝突させる
ものは除塵効率が低いという欠点がある。Furthermore, in the above-mentioned gas dispersion type gas-liquid contact device, it is difficult to control the dust removal rate, and such consideration is not taken. Furthermore, the method in which the drum collides with the liquid surface at high speed has the disadvantage that dust removal efficiency is low.
本発明は、前記従来の問題点を解決するためになされた
ものであり、ガス中のばい塵などを高い脱塵率のもとに
除去でき、かつメインテナンスが容易になると共に、そ
の脱塵率を制御できるガスの除塵装置を提供することを
解決課題としたものである。The present invention was made in order to solve the above-mentioned conventional problems, and it is possible to remove soot and dust from gas with a high dust removal rate, facilitate maintenance, and improve the dust removal rate. The object of the present invention is to provide a gas dust removal device that can control the
〔課題を解決するための手段]
被除塵ガスのガス吹出管中に、被除塵ガスと同時に液を
供給し、それらをイオン濃度を調節した液中に噴霧流と
して吹出すようにしたガスの除塵方法からなり、かかる
方法の実施に用いる装置は容器内に水等の液を入れ、そ
の液中に被除塵ガスのガス吹出管の端部を開口して設け
、その開口端部と容器内の液面との距離、即ち、液内の
ガスの吹込み高さを調節自在にすると共に、その液面の
上部にガス出口を設けることにより構成され、ぽい塵を
含むガスを液中に吹込むことにより、微細気泡が発生し
、そのガスはその気泡層内にて拡散及び慣性衝突するこ
とにより脱塵するのである。[Means for solving the problem] Gas dust removal in which a liquid is supplied simultaneously with the gas to be removed into a gas blowing pipe for the gas to be removed, and the liquid is blown out as a spray stream into the liquid whose ion concentration has been adjusted. The apparatus used to carry out this method consists of placing a liquid such as water in a container, placing an open end of a gas blowing pipe for the dust gas to be removed in the liquid, and connecting the open end with the inside of the container. The distance from the liquid surface, that is, the height at which gas is blown into the liquid, can be adjusted freely, and a gas outlet is provided above the liquid surface to blow gas containing dust into the liquid. As a result, fine bubbles are generated, and the gas is removed by diffusion and inertial collision within the bubble layer.
以下図面を参照して本発明の詳細な説明するが、第1図
は本発明の一実施例におけるガスの除塵装置の説明用縦
断面図である。The present invention will be described in detail below with reference to the drawings. FIG. 1 is an explanatory longitudinal cross-sectional view of a gas dust removal device in one embodiment of the present invention.
まず、この実施例の装置は、石炭ボイラー等から排出し
たばい塵を含む排ガスGK中のばい塵などを除去するた
めのものであり、第1図の左側に示すガス人口1から送
られた排ガスGwを、除塵器である容器2内に入れた液
、即ち水W中に通すことにより除塵するものであり、そ
の容器2の上部には除塵したガスGのガス出口3が設け
られている。First, the device of this embodiment is for removing dust from the exhaust gas GK containing dust discharged from a coal boiler, etc. Dust is removed by passing Gw through a liquid, ie, water W, contained in a container 2 which is a dust remover, and a gas outlet 3 for the removed gas G is provided in the upper part of the container 2.
次に、このガス人口1に連通した通路12の下方に垂直
に伸びる複数のガス吹出管4が設けられており、ガス吹
出管4の端部4Aを容器2内の水W中に開口して設けて
いる。Next, a plurality of gas blow-off pipes 4 are provided that extend vertically below the passage 12 that communicates with the gas population 1, and the end portion 4A of the gas blow-off pipe 4 is opened into the water W in the container 2. It is set up.
そして上記の装置では、ガス吹出管4の水W中に開口し
た端部4Aと容器2内の水面W、Lとの距離H1即ちガ
ス吹出管4からの排ガスGwの吹込み高さを制御するよ
うにしている。具体的には例えば水面の高さの調節によ
り行なうことができる。In the above device, the distance H1 between the end 4A of the gas blow-off pipe 4 opened into the water W and the water surface W, L in the container 2, that is, the height of the exhaust gas Gw blown from the gas blow-off pipe 4 is controlled. That's what I do. Specifically, this can be done, for example, by adjusting the height of the water surface.
即ち、この実施例においては、この容器2の下部にポン
プ5を介して接続した吸排水装置6により、容器2内の
水Wの水面W、L高さを調節自在にしている。That is, in this embodiment, the water surface W and L height of the water W in the container 2 can be adjusted freely by the suction and drainage device 6 connected to the lower part of the container 2 via the pump 5.
以上の構成からなるこの実施例の除塵装置では、ぽい塵
を含む排ガスGwを水W中に端部4Aを開口した多数の
ガス吹出管4から、例えば流速10〜50m/秒にて水
W中に吹込むことにより、2〜5mm程度の微細気泡を
発生させ、例えば深さ200〜1000IIIa1程度
の気泡層7を生成させている。In the dust removal device of this embodiment having the above configuration, the exhaust gas Gw containing fine dust is blown into water W from a number of gas blowing pipes 4 having open ends 4A at a flow rate of 10 to 50 m/sec, for example. By blowing into the air, fine bubbles of about 2 to 5 mm are generated, and a bubble layer 7 having a depth of, for example, about 200 to 1000 IIIa1 is generated.
その結果、ばい塵を含む排ガスG−は、この気泡層7内
にて拡散及び慣性衝突することにより脱塵され、この場
合、1μ以下のサブミクロンに対しても高い脱塵率を維
持できることが確認されている。As a result, the exhaust gas G- containing dust is removed by diffusion and inertial collision within this bubble layer 7, and in this case, it is possible to maintain a high dust removal rate even for submicrons of 1μ or less. Confirmed.
また、上記の排ガスG−の吹込み高さ、即ち、水面W、
Lとガス吹出管4の水W中に開口した端部4Aとの距離
Hは、排ガスGw中のばい塵の濃度及び粒径等により調
節しており、その距離(am)Hと脱塵率(%)との関
係は第2図に示すとおりである。In addition, the blowing height of the above exhaust gas G-, that is, the water surface W,
The distance H between L and the end 4A of the gas blowing pipe 4 that opens into the water W is adjusted depending on the concentration and particle size of dust in the exhaust gas Gw, and the distance (am) H and the dust removal rate (%) is as shown in Figure 2.
この場合、除塵される排ガスG−及び除塵後のガスGの
各ぽい塵濃度を連続的に測定し、距離Hを制御するコン
トローラーにカスケードすることにより、自動的にガス
Gのばい塵濃度を制御することもできる。In this case, the dust concentration of the gas G is automatically controlled by continuously measuring the dust concentration of the exhaust gas G to be removed and the gas G after dust removal, and cascading the data to the controller that controls the distance H. You can also.
なお、第1図の実施例における排ガスGwの流量700
,000ボN/時、排ガス温度90°C1入口ぽい塵濃
度500■/n(Nで、除塵後のガスGに含まれるばい
塵濃度5■/n(N以下になることが確認されており、
この場合、0から500mmの範囲で調整可能な前記の
距離Hにおいて、この距離Hを130mm程度に調節し
ている。In addition, the flow rate 700 of the exhaust gas Gw in the embodiment shown in FIG.
,000 BoN/hour, exhaust gas temperature 90°C, dust concentration at the inlet of 500 ■/n (N), and it has been confirmed that the dust concentration contained in gas G after dust removal is less than 5 ■/n (N). ,
In this case, the distance H is adjusted to about 130 mm, which is adjustable in the range of 0 to 500 mm.
また、第1図においては排ガスG−のガス人口1にガス
冷却ポンプ8を介した冷却ノズル9を配設し、容器1内
には攪拌機10を設け、更にガス集合管3Aからのガス
出口3にはミストエリミネータ11を配設している。In addition, in FIG. 1, a cooling nozzle 9 via a gas cooling pump 8 is provided in the gas population 1 of the exhaust gas G-, a stirrer 10 is provided in the container 1, and a gas outlet 3 from the gas collecting pipe 3A is provided. A mist eliminator 11 is disposed at.
なお、上記の距離Hの調節の手段は、この実施例のごと
(、ポンプ5及び吸排水装置6に限定されるものではな
く、例えばガス吹出管4の位置を上下に調節したり、ガ
ス吹出管4を伸縮自在にする等のような手段を用いても
よい。Note that the means for adjusting the distance H described above is not limited to the pump 5 and the suction/drainage device 6 as in this embodiment; for example, adjusting the position of the gas blowing pipe 4 up or down, Means such as making the tube 4 telescopic may also be used.
また、イオン濃度をコントロールして液面の表面張力を
変化させた液中に、被除塵ガスのガス吹出管中に被除塵
ガスと液を同時に供給して噴霧流の形で吹出させると、
気泡径を変化させることができ、その結果除塵効果を向
上させることを可能とすることができた。In addition, if the gas to be removed and the liquid are simultaneously supplied into the gas blowing pipe of the gas to be removed into a liquid whose ion concentration has been controlled to change the surface tension of the liquid surface, and the gas to be removed and the liquid are blown out in the form of a spray stream,
It was possible to change the bubble diameter, and as a result, it was possible to improve the dust removal effect.
以上に説明した本発明のガスの除塵方法及び装置によれ
ば、ぽい塵を含む排ガス等から高脱塵率のもとで除塵が
行なわれ、しかもその除塵率が、ガス吹出管の開口端と
液面との距離を調節することにより容易に制御できると
いう効果がある。According to the gas dust removal method and apparatus of the present invention described above, dust is removed from exhaust gas containing fine dust at a high dust removal rate, and moreover, the dust removal rate is equal to the opening end of the gas blowing pipe. It has the advantage that it can be easily controlled by adjusting the distance to the liquid level.
特に、本発明の装置では、ガス吹出管部分を回転してい
ないので、動力消費も少なくてすみ、また回転軸受部の
シール構造も不要で、メインテナンスが容易であるとい
う利点もある。また更に液面の表面張力を変化させるこ
とにより気泡径を変化させ、その変化をコントロールす
ることにより除塵効果を向上させることができる。In particular, in the device of the present invention, since the gas blow-off pipe portion is not rotated, power consumption is reduced, and there is no need for a sealing structure for the rotating bearing portion, making maintenance easy. Furthermore, by changing the surface tension of the liquid surface, the bubble diameter can be changed, and by controlling the change, the dust removal effect can be improved.
第1図は本発明の一実施例におけるガスの除塵装置の説
明用縦断面図、第2図は第1図の装置による除塵時にお
ける排ガスの吹込み高さと脱塵率との関係を示す図であ
る。
1・・・ガス入口、2・・・容器、3・・・ガス出口、
4・・・ガス吹出管、4A・・・ガス吹出管の開口端部
、6・・・吸排水装置、H・・・距離、W、L・・・水
面。FIG. 1 is an explanatory vertical cross-sectional view of a gas dust removal device according to an embodiment of the present invention, and FIG. 2 is a diagram showing the relationship between the blowing height of exhaust gas and the dust removal rate during dust removal by the device of FIG. 1. It is. 1... Gas inlet, 2... Container, 3... Gas outlet,
4... Gas blow-off pipe, 4A... Opening end of gas blow-off pipe, 6... Suction/drainage device, H... Distance, W, L... Water surface.
Claims (1)
液を供給し、それらをイオン濃度を調節した液中に噴霧
流として吹出すようにしたガスの除塵方法。 2、容器内の液中に、被除塵ガスのガス吹出管の端部を
開口して設け、その開口端部と容器内の液面との距離を
調節自在にすると共に、その液面の上部にガス出口を設
けてなるガスの除塵装置。[Claims] 1. A method for removing dust from a gas, in which a liquid is supplied simultaneously with the gas to be removed into a gas blowing pipe for the gas to be removed, and the liquid is blown out as a spray stream into the liquid whose ion concentration has been adjusted. . 2. The end of the gas blowing pipe for the gas to be removed is opened in the liquid in the container, and the distance between the open end and the liquid level in the container is adjustable, and the distance above the liquid level is adjusted. A gas dust removal device equipped with a gas outlet.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16259489A JPH0330810A (en) | 1989-06-27 | 1989-06-27 | Method and apparatus for removing dust from gas |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16259489A JPH0330810A (en) | 1989-06-27 | 1989-06-27 | Method and apparatus for removing dust from gas |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0330810A true JPH0330810A (en) | 1991-02-08 |
Family
ID=15757561
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16259489A Pending JPH0330810A (en) | 1989-06-27 | 1989-06-27 | Method and apparatus for removing dust from gas |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0330810A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009262068A (en) * | 2008-04-25 | 2009-11-12 | Sc-Japan Co Ltd | Air cleaner |
CN108114554A (en) * | 2017-08-08 | 2018-06-05 | 永春德鑫服饰有限公司 | A kind of efficient dust catcher device |
JPWO2020226163A1 (en) * | 2019-05-07 | 2020-11-12 |
-
1989
- 1989-06-27 JP JP16259489A patent/JPH0330810A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009262068A (en) * | 2008-04-25 | 2009-11-12 | Sc-Japan Co Ltd | Air cleaner |
CN108114554A (en) * | 2017-08-08 | 2018-06-05 | 永春德鑫服饰有限公司 | A kind of efficient dust catcher device |
JPWO2020226163A1 (en) * | 2019-05-07 | 2020-11-12 | ||
WO2020226163A1 (en) * | 2019-05-07 | 2020-11-12 | Hkテクノロジー株式会社 | Dust removal device and dust removal method |
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