JPH0483513A - Desulfurization apparatus - Google Patents

Desulfurization apparatus

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Publication number
JPH0483513A
JPH0483513A JP2195019A JP19501990A JPH0483513A JP H0483513 A JPH0483513 A JP H0483513A JP 2195019 A JP2195019 A JP 2195019A JP 19501990 A JP19501990 A JP 19501990A JP H0483513 A JPH0483513 A JP H0483513A
Authority
JP
Japan
Prior art keywords
gas
mist
tower
dust removal
eliminator
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
Application number
JP2195019A
Other languages
Japanese (ja)
Inventor
Kiyohito Otsubo
清仁 大坪
Tadayoshi Tamaru
田丸 忠義
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IHI Corp
Original Assignee
IHI Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by IHI Corp filed Critical IHI Corp
Priority to JP2195019A priority Critical patent/JPH0483513A/en
Publication of JPH0483513A publication Critical patent/JPH0483513A/en
Pending legal-status Critical Current

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  • Treating Waste Gases (AREA)
  • Separation Of Particles Using Liquids (AREA)

Abstract

PURPOSE:To reduce an installation area by providing mist eliminators within an absorbing tower in a multistage fashion and providing a supply means supplying washing water immediately after the eliminators are washed to a dust removing tower. CONSTITUTION:Gas to be treated is introduced into a dust removing tower 2 and brought into contact with a treatment solution to be subjected to dust removing treatment. The gas after dust removing treatment is introduced into an absorbing tower 3 to be subjected to desulfurization treatment and a mist component is removed by mist eliminators 15. The mist eliminators 15 are provided within the absorbing tower 3 along the flow of the gas in a multistage fashion and the washing water immediately after the mist eliminators 15 are washed is supplied to the dust removing tower 2 as the above-mentioned treatment solution. As a result, an installation area can be reduced.

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は、脱じん塔と吸収塔とを備えた脱硫装置に係り
、特に設置面積を小さくすることを可能にした脱硫装置
に関するものである。
[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a desulfurization device equipped with a dust removal tower and an absorption tower, and particularly relates to a desulfurization device that makes it possible to reduce the installation area. .

[従来の技術] 一般に、燃焼機器からの排ガス等の被処理ガス中に含ま
れるフライアッシュや硫黄酸化物等を除去する装置とし
て湿式の脱硫装置が知られている。
[Prior Art] Wet desulfurization equipment is generally known as a device for removing fly ash, sulfur oxides, etc. contained in gas to be treated such as exhaust gas from combustion equipment.

この脱硫装置は、第2図に示すように、脱じん塔aと吸
収塔すとから主に構成され、被処理ガスが、ガス−ガス
ヒータCを介してがら脱じん塔aに入り、そこで処理液
と接触してガス中のばいじん等が除去される。脱じん塔
aからのガスは、吸収塔すに入り、そこで例えば石灰石
を水に溶解した吸収液と接触して、ガス中の硫黄酸化物
が吸収除去される。脱硫処理後のガスは、塔す内のミス
トエリミネータdを介して一吸収塔すから排出される。
As shown in Figure 2, this desulfurization equipment mainly consists of a dust removal tower a and an absorption tower.The gas to be treated enters the dust removal tower a through a gas-gas heater C, and is treated there Dust, etc. in the gas is removed by contact with the liquid. The gas from the dust removal tower a enters the absorption tower, where it comes into contact with an absorption liquid in which, for example, limestone is dissolved in water, and sulfur oxides in the gas are absorbed and removed. The gas after the desulfurization treatment is discharged from one absorption tower via a mist eliminator d in the tower.

その処理ガスは、ガスーガスヒータ入ロミストエリミネ
ータ(GGH入口ME)eを介してミスト分がほぼ完全
に除去されてからガス−ガスヒータCで昇温され、その
後煙突fがら大気に放出される。
The process gas is heated through a gas-gas heater C after the mist is almost completely removed through a romist eliminator (GGH inlet ME) e containing a gas-gas heater, and then released into the atmosphere through a chimney f.

吸収塔す内のミストエリミネータd及びGGH入口ME
eは、工業用水等の洗浄水によりそれぞれ洗浄され、G
GH入口MEe洗浄後の洗浄水が貯溜槽gに溜まる。そ
の貯溜槽gの水がポンプhにより処理液として脱じん塔
aに供給され、水の有効利用が行われている。
Mist eliminator d in the absorption tower and GGH inlet ME
e is washed with washing water such as industrial water, and G
The cleaning water after cleaning the GH inlet MEe is collected in the storage tank g. The water in the storage tank g is supplied as a treatment liquid to the dust removal tower a by a pump h, thereby effectively utilizing the water.

[発明が解決しようとする課題] ところで、上述の脱硫装置にあっては、ガス中に吸収液
等のミストが同伴すると二次公害を起こすので、塔内上
部のミストエリミネータとガス−ガスヒータの入口のG
GH入口MEとによりミスト分を除去すると共に、白煙
防止のためにガス−ガスヒータで昇温している。しかし
、ミストの付着によるガス−ガスヒータの腐蝕等を防止
すべくGGH入口MEを設けて、吸収塔内のミストエリ
ミネータで取り除けないミスト分を除去するために、G
GH入口MHの設置スペース等が必要になり、装置の設
置面積が大きくなる問題がある。
[Problems to be Solved by the Invention] By the way, in the above-mentioned desulfurization equipment, if the mist of the absorption liquid or the like is entrained in the gas, it will cause secondary pollution. G of
The mist is removed by the GH inlet ME, and the temperature is raised by a gas-gas heater to prevent white smoke. However, in order to prevent corrosion of the gas-gas heater due to adhesion of mist, a GGH inlet ME is provided to remove the mist that cannot be removed by the mist eliminator in the absorption tower.
This requires a space for installing the GH entrance MH, and there is a problem that the installation area of the device becomes large.

そこで、本発明は、このような事情を考慮してなされた
ものであり、その目的は設置面積を小さくすることを可
能にした脱硫装置を提供することにある。
Therefore, the present invention has been made in consideration of such circumstances, and its purpose is to provide a desulfurization apparatus that allows the installation area to be reduced.

[課題を解決するための手段] 本発明は、上記目的を達成するために、被処理ガスを導
入し、これを処理液と接触させて脱じん処理する脱じん
塔と、脱じん処理後のガスを導入し、これを脱硫処理し
た後、ミストエリミネータでミスト分を除去する吸収塔
とを饋えた脱硫装置において、上記吸収塔内に、ガスの
流れに沿って多段にミストエリミネータを設けると共に
、そのミストエリミネータを洗浄した直後の洗浄水を、
上記処理液として脱じん塔に供給する供給手段を設けた
ものである。
[Means for Solving the Problems] In order to achieve the above object, the present invention provides a dust removal tower that introduces a gas to be treated and brings it into contact with a treatment liquid to perform dust removal treatment, and a In a desulfurization apparatus equipped with an absorption tower that introduces gas, desulfurizes it, and then removes the mist with a mist eliminator, the absorption tower is provided with mist eliminators in multiple stages along the flow of the gas, and Use the washing water immediately after washing the mist eliminator.
A supply means is provided for supplying the above-mentioned treatment liquid to the dust removing tower.

[作用] 吸収塔内にミストエリミネータが多段に設けられている
ために、ガス中からミスト分が取り除かれると共に、エ
リミネータを洗浄した直後の洗浄水が処理液として脱じ
ん塔に供給されるために、エリミネータに捕捉されたミ
ストが再飛散することなく吸収塔外に排出されるので、
ミスト除去性能が向上することになる。このため、吸収
塔からの処理ガスにはミストがほとんど存在しないので
、従来のようなガスーガスヒータ入ロミストエリミネー
タが不要となり、設置面積が小さくなる。
[Function] Since the mist eliminator is installed in multiple stages in the absorption tower, the mist is removed from the gas, and the washing water immediately after washing the eliminator is supplied to the dust removal tower as a treatment liquid. , the mist captured by the eliminator is discharged outside the absorption tower without being scattered again.
Mist removal performance will be improved. Therefore, since there is almost no mist in the treated gas from the absorption tower, the conventional gas-gas heater-containing romist eliminator is unnecessary, and the installation area is reduced.

[実施例] 以下、本発明の一実施例を添付図面に基づいて説明する
[Example] Hereinafter, an example of the present invention will be described based on the accompanying drawings.

第1図において、1は脱じん塔2と吸収塔3とから主に
構成されている脱硫装置を示している。
In FIG. 1, reference numeral 1 indicates a desulfurization apparatus mainly composed of a dust removal tower 2 and an absorption tower 3.

脱じん塔2の下方には、ボイラ等の燃焼機器からの排ガ
ス等の被処理ガスのガス導入管4がガスガスヒータ5を
介し′て接続されている。この脱じん塔2は、塔2内下
部の処理液槽6の処理液を、循環系7を介して塔2内上
部のスプレノズル8に移送すると共にノズル8から噴霧
させ、この処理液と被処理ガスとを自流接触させて、ガ
ス中のばいじん等を除去するように構成されている。脱
じん塔2の上部には、塔2内で処理されたガスの排出管
9か接続され、この排出管9が吸収塔3の下方に接続さ
れている。
A gas inlet pipe 4 for a gas to be treated such as exhaust gas from a combustion device such as a boiler is connected to the lower part of the dust removal tower 2 via a gas heater 5 . This dedusting tower 2 transfers the treated liquid in the treated liquid tank 6 in the lower part of the tower 2 through the circulation system 7 to the spray nozzle 8 in the upper part of the tower 2 and sprays it from the nozzle 8. It is configured to remove dust, etc. from the gas by bringing it into direct flow contact with the gas. A discharge pipe 9 for the gas treated in the tower 2 is connected to the upper part of the dust removal tower 2, and this discharge pipe 9 is connected to the lower part of the absorption tower 3.

吸収塔3は、塔3内下部の吸収液槽10の吸収液(例え
ば石灰石を水に溶解した吸収液)を、循環系11を介し
て塔3内上方のスプレノズル12に移送すると共にノズ
ル12から噴霧させ、この吸収液と排出管9からのガス
とを向流接触させて、ガス中の硫黄酸化物を吸収するよ
うに構成されている。この吸収塔3の上部にはガス排出
管13が接続され、このガス排出管13は上記ガス−ガ
スヒータ5を介して煙突14に接続されており、吸収塔
3からの処理ガスがガス−ガスヒータ5で昇温されな後
、煙突14から大気に放出される。
The absorption tower 3 transfers the absorption liquid (for example, an absorption liquid obtained by dissolving limestone in water) in the absorption liquid tank 10 in the lower part of the tower 3 to the spray nozzle 12 in the upper part of the tower 3 through the circulation system 11, and from the nozzle 12. The absorption liquid is sprayed, and the absorption liquid is brought into countercurrent contact with the gas from the discharge pipe 9 to absorb the sulfur oxides in the gas. A gas exhaust pipe 13 is connected to the upper part of this absorption tower 3, and this gas exhaust pipe 13 is connected to a chimney 14 via the gas-gas heater 5, and the process gas from the absorption tower 3 is passed through the gas-gas heater 5. After being heated in the air, it is released into the atmosphere from the chimney 14.

また、吸収塔3内には、スプレノズル12の上方にガス
の流れに沿って傾斜型のミストエリミネータ15が図示
例では2段に設けられ、これらミストエリミネータ15
によりガス中のミスト分が取り除かれるようになってい
る。これらミストエリミネータ15には、洗浄管16が
接続されており、工業用水等の洗浄水が間欠的あるいは
連続的に供給されてエリミネータ15が洗浄されるよう
になっている。さらに、吸収塔3内には、上段のミスト
エリミネータ15の下部近傍の適宜の位置に、そのミス
トエリミネータ15を洗浄した直後の洗浄水(ミストド
レン)を回収するドレン受17が設けられている。尚、
ドレン受は、上段のミストエリミネータに限定されるも
のではなく、吸収塔内の全て又は任意のミストエリミネ
ータの下部に配置してもよい。
In addition, in the absorption tower 3, inclined mist eliminators 15 are provided in two stages above the spray nozzle 12 along the gas flow in the illustrated example, and these mist eliminators 15
This removes the mist in the gas. A cleaning pipe 16 is connected to these mist eliminators 15, and cleaning water such as industrial water is supplied intermittently or continuously to clean the eliminators 15. Further, in the absorption tower 3, a drain receiver 17 is provided at an appropriate position near the bottom of the upper mist eliminator 15 to collect the washing water (mist drain) immediately after washing the mist eliminator 15. still,
The drain receiver is not limited to the upper mist eliminator, but may be arranged below all or any mist eliminators in the absorption tower.

ドレン受17には、回収したミストドレンを処理液供給
装置18に供給するためのミストドレン供給管19が接
続されている。処理液供給装置18には、上記脱じん塔
2に接続されている処理液供給管20が接続されており
、脱じん塔2内の処理液槽6の処理液量に応じて供給装
置18内のミストドレンが処理液として供給されるよう
になっている。その処理液供給管[18、処理液供給管
20及びミストドレン供給管19により供給手段21が
構成されている。
A mist drain supply pipe 19 is connected to the drain receiver 17 for supplying collected mist drain to the processing liquid supply device 18 . A treatment liquid supply pipe 20 connected to the dust removal tower 2 is connected to the treatment liquid supply device 18, and the amount of treatment liquid in the supply device 18 is adjusted according to the amount of treatment liquid in the treatment liquid tank 6 in the dust removal tower 2. The mist drain is supplied as a processing liquid. The processing liquid supply pipe 18, the processing liquid supply pipe 20, and the mist drain supply pipe 19 constitute a supply means 21.

尚、図中、22は処理液槽6内の処理液を適宜脱じん塔
2外に排出するための処理液排出管、23は吸収液の一
部を適宜抜き出し他の処理系に導く吸収液導管、24は
吸収液を供給するための吸収液供給管をそれぞれ示して
いる。
In the figure, 22 is a treatment liquid discharge pipe for appropriately discharging the treatment liquid in the treatment liquid tank 6 to the outside of the dust removal tower 2, and 23 is an absorption liquid for appropriately extracting a part of the absorption liquid and guiding it to another treatment system. The conduits 24 each represent an absorption liquid supply pipe for supplying the absorption liquid.

次に、本実施例の作用を説明する。Next, the operation of this embodiment will be explained.

排ガス等の被処理ガスは、ガス−ガスヒ−タ5で冷却さ
れてからガス導入管4を介して脱じん塔2に導入され、
塔2内で処理液と向流接触して、ガス中のばいじんや不
純物等が除去される。そこで処理されたガスは、排出管
9を介して吸収塔3内に導入される。導入されたガスは
、スプレーノズル12から噴射される吸収液(例えば石
灰石を水に溶解した吸収液)と接触して、ガス中の硫黄
酸化物が吸収液に吸収除去され、ガスの脱硫処理か行わ
れる。脱硫処理後のガスは、2段のミストエリミネータ
15を通過し、そこでミスト分が取り除かれた後、ガス
排出管13に流入し、ガス−ガスヒータ5で昇温されて
から煙突14から大気に放出される。
The gas to be treated such as exhaust gas is cooled by a gas-gas heater 5 and then introduced into the dust removal tower 2 via a gas introduction pipe 4.
It comes into countercurrent contact with the treatment liquid in the tower 2 to remove dust, impurities, etc. from the gas. The gas treated there is introduced into the absorption tower 3 via the discharge pipe 9. The introduced gas comes into contact with an absorption liquid (for example, an absorption liquid made by dissolving limestone in water) injected from the spray nozzle 12, and sulfur oxides in the gas are absorbed and removed by the absorption liquid, and the gas is desulfurized. It will be done. The gas after the desulfurization process passes through a two-stage mist eliminator 15, where the mist is removed, flows into the gas exhaust pipe 13, is heated by the gas-gas heater 5, and is then released into the atmosphere from the chimney 14. be done.

ミストを捕捉するミストエリミネータ15は、洗浄管1
6を通して間欠的あるいは連続的に供給される工業用水
等の洗浄水によって洗浄され、その洗浄直後の洗浄水(
ミストドレン)がドレン受17に回収される。この場合
、エリミネータ15で捕捉されたミストは、洗浄水と共
に、ドレン受17に回収される。そのドレン受17のミ
ストドレンがミストドレン供給管19を介して処理液供
給装置18に供給される。処理液供給装置18内のミス
トドレンは、脱じん塔2の処理液槽6の処理液量に応じ
て適宜処理液供給管20を介して処理液として脱じん塔
2に供給され、ガスの脱じん処理等に寄与される。
The mist eliminator 15 that captures mist is the cleaning pipe 1
Washing water such as industrial water is supplied intermittently or continuously through 6.
mist drain) is collected in the drain receiver 17. In this case, the mist captured by the eliminator 15 is collected into the drain receiver 17 together with the cleaning water. The mist drain from the drain receiver 17 is supplied to the processing liquid supply device 18 via the mist drain supply pipe 19. The mist drain in the treatment liquid supply device 18 is appropriately supplied to the dust removal tower 2 as a treatment liquid via the treatment liquid supply pipe 20 according to the amount of treatment liquid in the treatment liquid tank 6 of the dust removal tower 2, and the gas is removed. Contributes to dust treatment, etc.

したがって、吸収塔3内にミストエリミネータ15が2
段に設けられていると共に、エリミネータ15を洗浄し
た直後のミストドレンが回収されるために、ガス排出管
13に流入した処理ガスにはほとんどミスト分が存在す
ることがない。
Therefore, there are two mist eliminators 15 in the absorption tower 3.
Since the eliminator 15 is provided in stages and the mist drain is collected immediately after cleaning the eliminator 15, there is almost no mist in the processing gas that has flowed into the gas exhaust pipe 13.

すなわち、吸収塔3内にミストエリミネータ15を21
4に設けるだけでは、ミストエリミネータ15を洗浄し
た洗浄水が吸収塔3内を降下するために、この降下中に
ガスとの向流接触等によりミストが再飛散するので、エ
リミネータ15のミスト除去性能が低下して、エリミネ
ータ15を通過した処理ガスにミストが存在することが
ある。
That is, a mist eliminator 15 is installed in the absorption tower 3.
If the cleaning water used to clean the mist eliminator 15 falls within the absorption tower 3, the mist will be re-dispersed due to countercurrent contact with the gas during this descent, which will reduce the mist removal performance of the eliminator 15. may be lowered and mist may be present in the processing gas that has passed through the eliminator 15.

しかし、エリミネータ15を洗浄した直後の洗浄水がド
レン受17に回収されて処理液供給装置18に供給され
るために、ミストが再飛散する前にドレン受17に回収
されるので、ミストの再飛散が防止され、エリミネータ
15のミスト除去性能が向上することになる。これによ
り、ミストエリミネータ15を通った処理ガス中にはミ
スト分が存在することがほとんどない、このため、従来
のようにガス−ガスヒータ5の入口に、ガスーガスヒー
タ入ロミストエリミネータ(GGH入口ME)を設けな
くてもよいので、GGH入口MEの設置スペースが不要
になり、脱硫装置1の設置面積が小さくなる。また、G
GH入口MEとその配管等が不要になるので、その分の
設備費、建設費等が少なくなり、装置1のコストを低減
することができる。
However, since the cleaning water immediately after cleaning the eliminator 15 is collected in the drain receiver 17 and supplied to the processing liquid supply device 18, the mist is collected in the drain receiver 17 before it is scattered again. This prevents scattering and improves the mist removal performance of the eliminator 15. As a result, there is almost no mist in the processing gas that has passed through the mist eliminator 15. Therefore, unlike the conventional gas-gas heater 5, a gas-gas heater-containing romist eliminator (GGH inlet ME) is installed at the inlet of the gas-gas heater 5. Since it is not necessary to provide the GGH inlet ME, the installation space for the GGH inlet ME becomes unnecessary, and the installation area of the desulfurization device 1 becomes smaller. Also, G
Since the GH inlet ME, its piping, etc. are no longer necessary, equipment costs, construction costs, etc. are reduced, and the cost of the apparatus 1 can be reduced.

サラニ、ドレン受17で回収したミストドレンを処理液
供給装置18を介して処理液として脱じん塔2に供給す
るので、脱じん/吸収塔での水バランスを従来とほぼ同
様に行え、水の有効利用を図れることになる。
Since the mist drain collected in the drain receiver 17 is supplied to the dust removal tower 2 as a treatment liquid via the treatment liquid supply device 18, the water balance in the dust removal/absorption tower can be performed almost in the same way as before, and the water This will allow for effective use.

[発明の効果コ 以上要するに本発明によれば、吸収塔内にミストエリミ
ネータを多段に設けると共に、エリミネータを洗浄した
直後の洗浄水を脱じん塔に供給する供給手段を設けたの
で、設置面積を小さくできるという優れた効果を発揮す
る。
[Effects of the Invention] In short, according to the present invention, mist eliminators are provided in multiple stages within the absorption tower, and a supply means for supplying the cleaning water immediately after washing the eliminators to the dust removal tower is provided, so that the installation area can be reduced. It has the excellent effect of being able to be made smaller.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の一実施例を示す構成図、第2図は従来
例を示す構成図である。 図中、2は脱じん塔、3は吸収塔、15はミストエリミ
ネータ、21は供給手段を示す。 特許出願人  石川島播磨重工業株式会社代理人弁理士
  絹  谷  信  雄(外1名)第2図
FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional example. In the figure, 2 is a dust removal tower, 3 is an absorption tower, 15 is a mist eliminator, and 21 is a supply means. Patent applicant: Ishikawajima-Harima Heavy Industries Co., Ltd. Representative patent attorney: Nobuo Kinutani (1 other person) Figure 2

Claims (1)

【特許請求の範囲】[Claims] 1、被処理ガスを導入し、これを処理液と接触させて脱
じん処理する脱じん塔と、脱じん処理後のガスを導入し
、これを脱硫処理した後、ミストエリミネータでミスト
分を除去する吸収塔とを備えた脱硫装置において、上記
吸収塔内に、ガスの流れに沿って多段にミストエリミネ
ータを設けると共に、そのミストエリミネータを洗浄し
た直後の洗浄水を、上記処理液として脱じん塔に供給す
る供給手段を設けたことを特徴とする脱硫装置。
1. A dust removal tower that introduces the gas to be treated and brings it into contact with the treatment liquid to remove dust, and a mist eliminator that introduces the gas after the dust removal process and desulfurizes it, then removes the mist with a mist eliminator. In the desulfurization equipment equipped with an absorption tower, mist eliminators are provided in multiple stages along the gas flow in the absorption tower, and the cleaning water immediately after washing the mist eliminator is used as the treatment liquid in the dust removal tower. A desulfurization device characterized by being provided with a supply means for supplying.
JP2195019A 1990-07-25 1990-07-25 Desulfurization apparatus Pending JPH0483513A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2195019A JPH0483513A (en) 1990-07-25 1990-07-25 Desulfurization apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2195019A JPH0483513A (en) 1990-07-25 1990-07-25 Desulfurization apparatus

Publications (1)

Publication Number Publication Date
JPH0483513A true JPH0483513A (en) 1992-03-17

Family

ID=16334184

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2195019A Pending JPH0483513A (en) 1990-07-25 1990-07-25 Desulfurization apparatus

Country Status (1)

Country Link
JP (1) JPH0483513A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012250154A (en) * 2011-06-01 2012-12-20 Mitsubishi Heavy Industries Environmental & Chemical Engineering Co Ltd Flue gas treatment apparatus
CN109107320A (en) * 2018-09-21 2019-01-01 胡新军 A kind of desulfurizing industrial fume tower and method
CN112691533A (en) * 2021-03-23 2021-04-23 山东金宜善新材料有限公司 Sodium sulfite absorption tower device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012250154A (en) * 2011-06-01 2012-12-20 Mitsubishi Heavy Industries Environmental & Chemical Engineering Co Ltd Flue gas treatment apparatus
CN109107320A (en) * 2018-09-21 2019-01-01 胡新军 A kind of desulfurizing industrial fume tower and method
CN112691533A (en) * 2021-03-23 2021-04-23 山东金宜善新材料有限公司 Sodium sulfite absorption tower device

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