JPS6113057Y2 - - Google Patents
Info
- Publication number
- JPS6113057Y2 JPS6113057Y2 JP18971980U JP18971980U JPS6113057Y2 JP S6113057 Y2 JPS6113057 Y2 JP S6113057Y2 JP 18971980 U JP18971980 U JP 18971980U JP 18971980 U JP18971980 U JP 18971980U JP S6113057 Y2 JPS6113057 Y2 JP S6113057Y2
- Authority
- JP
- Japan
- Prior art keywords
- spray
- water
- absorption
- section
- tray
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 238000010521 absorption reaction Methods 0.000 claims description 29
- 239000007921 spray Substances 0.000 claims description 25
- 238000005406 washing Methods 0.000 claims description 20
- 238000006477 desulfuration reaction Methods 0.000 claims description 10
- 230000023556 desulfurization Effects 0.000 claims description 10
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 4
- 239000003546 flue gas Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 230000002745 absorbent Effects 0.000 claims description 3
- 239000002250 absorbent Substances 0.000 claims description 3
- 239000011362 coarse particle Substances 0.000 claims description 2
- 239000000779 smoke Substances 0.000 claims 1
- 239000000428 dust Substances 0.000 description 13
- 239000007788 liquid Substances 0.000 description 13
- 239000007789 gas Substances 0.000 description 11
- 239000003595 mist Substances 0.000 description 10
- 239000004071 soot Substances 0.000 description 5
- 239000002002 slurry Substances 0.000 description 4
- 239000012719 wet electrostatic precipitator Substances 0.000 description 3
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910052815 sulfur oxide Inorganic materials 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
- Separation Of Particles Using Liquids (AREA)
Description
【考案の詳細な説明】
本考案は、排煙処理用スプレー塔に関するもの
で、詳しくは、吸収剤を使用して脱硫を行なう吸
収部を有する湿式排煙脱硫装置の吸収塔の改良に
関するものである。[Detailed description of the invention] The present invention relates to a spray tower for flue gas treatment, and more specifically, it relates to an improvement of an absorption tower for a wet flue gas desulfurization equipment that has an absorption section that performs desulfurization using an absorbent. be.
湿式脱硫装置出口で、ばいじん濃度を20mg／
Nm3以下にすることは困難とされており、これ以
下にするためには、湿式脱硫装置の出口に湿式電
気集じん器を設けてダスト濃度を減少させるのが
通例である。しかし、湿式電気集じん器を設置し
た場合には、次のような問題がある。すなわち、
第１に、設置面積が大きく、湿式脱硫装置と同程
度またはそれ以上になることがある。第２に、極
板洗浄水量が多く、しかも排水量も多く、この水
量は湿式脱硫装置の必要水量以上であり、したが
つて、湿式脱硫装置の排水量の何倍もの排水を出
すことになる。第３に、極板洗浄水量のための動
力が大きく、電力消費量が大である。 At the exit of the wet desulfurization equipment, reduce the soot and dust concentration to 20mg/
It is considered difficult to reduce the dust concentration to below Nm 3 , and in order to reduce the dust concentration to below this level, it is customary to install a wet electrostatic precipitator at the outlet of the wet desulfurization equipment to reduce the dust concentration. However, when a wet electrostatic precipitator is installed, there are the following problems. That is,
First, the footprint is large and can be comparable to or larger than wet desulfurization equipment. Second, the amount of water used to clean the electrode plate is large, and the amount of water discharged is also large, and this amount of water is more than the amount of water required for the wet desulfurization equipment, and therefore, the amount of water discharged is many times that of the wet desulfurization equipment. Thirdly, the amount of power needed to clean the electrode plate is large, resulting in large power consumption.
本考案は、吸収部の上部にトレイを介して水洗
部を設けることにより、上述の湿式電気集じん器
を設けなくとも、ばいじん濃度を減少させること
ができるようにしたもので、その一実施例につい
て、図面を参照しながら説明する。 The present invention makes it possible to reduce the soot and dust concentration without installing the above-mentioned wet electrostatic precipitator by providing a water washing section on the upper part of the absorption section via a tray. will be explained with reference to the drawings.
図面において、１は竪型の吸収塔で、その主要
部である吸収部２と、この上部に設けられた水洗
部３を有している。４はトレイで、このトレイ４
は前記水洗部３の一部をなしているが、このトレ
イ４からみれば、下部の吸収部２と上部の水洗部
３に分けられていて、下部は吸収剤供給管５から
吸収剤としてのCaCO3が供給され、硫黄酸化物
を吸収する。すなわち、吸収部２の下部側面には
ガス入口ノズル６を有し、ここからガスを吸収部
２に導入する。ここには、循環液のスプレーノズ
ル７を有しており、塔下部の液溜めタンク８から
の循環液を循環ポンプ９によつて昇圧してスプレ
ーノズル７からスプレーする。このスプレー液と
硫黄酸化物は次のような反応により、脱硫され
る。 In the drawings, reference numeral 1 denotes a vertical absorption tower, which has an absorption section 2 which is the main part thereof, and a water washing section 3 provided above the absorption section 2. 4 is a tray, this tray 4
constitutes a part of the washing section 3, but when viewed from the tray 4, it is divided into a lower absorption section 2 and an upper washing section 3. CaCO 3 is supplied and absorbs sulfur oxides. That is, a gas inlet nozzle 6 is provided on the lower side surface of the absorption section 2, and gas is introduced into the absorption section 2 from here. A circulating liquid spray nozzle 7 is provided here, and the circulating liquid from a liquid storage tank 8 at the bottom of the tower is pressurized by a circulation pump 9 and sprayed from the spray nozzle 7. This spray liquid and sulfur oxide are desulfurized by the following reaction.
CaCO3＋SO2＋１／２H2O
→CaSO3・１／２H2O＋CO2↑
CaCO3＋SO3＋2H2O
→CaSO4・2H2O＋CO2↑
この脱硫と同時に、ほとんどのガス中のばいじ
んも水滴との衝突により捕集される。スプレー液
と気液接触した排ガスは吸収部２の上部のミスト
エリミネータ１０で同伴ミストを除去したのち、
吸収部２を出る。CaCO 3 +SO 2 +1/2H 2 O →CaSO 3・1/2H 2 O+CO 2 ↑ CaCO 3 +SO 3 +2H 2 O →CaSO 4・2H 2 O+CO 2 ↑ At the same time as this desulfurization, most of the soot and dust in the gas is also converted to water droplets. Collected by collision. The exhaust gas that has come into gas-liquid contact with the spray liquid is removed by the mist eliminator 10 at the upper part of the absorption section 2, and then the entrained mist is removed.
Exit the absorption section 2.
この吸収部２を出たガスはトレイ４を通つて水
洗部３のスプレー段に入る。すなわち、水洗部３
においては、スプレーノズル１５から水をスプレ
ーすることによつて、さらに小さい水滴をつく
り、ガス中の残余のばいじんおよびミストを除去
する。そして、スプレーされた水はトレイ４で集
められ、洗浄水タンク１１へ貯槽され、水洗ポン
プ１２で循環使用される。水洗後の排ガスはミス
トエリミネータ１３でミストを分離してからガス
出口１４より大気へ排出される。 The gas leaving the absorption section 2 passes through the tray 4 and enters the spray stage of the water washing section 3. In other words, the water washing section 3
In this step, water is sprayed from the spray nozzle 15 to create even smaller water droplets and remove residual dust and mist from the gas. The sprayed water is collected in a tray 4, stored in a wash water tank 11, and circulated by a wash pump 12. After washing with water, the exhaust gas is separated into mist by a mist eliminator 13 and then discharged to the atmosphere from a gas outlet 14.
ガス中のばいじんは、水滴径と衝突して捕集さ
れるが、水滴径が小さい程、粒径の小さいダスト
を捕集できる。吸収部２のスラリー液のスプレー
ノズル７においては、固形物でスケーリングしな
いような比較的大口径のものが必要である。した
がつて、吸収部２での液滴は大きいので、捕集で
きるダストの粒子も比較的大きいものに限られて
いる。液がスラリーの少ない水であれば、口径の
小さいスプレーノズルを使用でき、したがつて、
スプレー液滴も小さい。この意味で、水洗部３に
おいては、吸収部２よりも小水滴をスプレーする
ことにより、吸収部２で捕集できないばいじんや
吸収部２から飛散したミストを捕集できる。しか
し、水洗部３で生じた水滴が小さすぎると、ミス
トエリミネータ１３で捕集しきれないことがある
ので、スプレーノズル１５のうち、最上段はミス
トエリミネータ１３で捕集できるような粒径の水
滴をつくる粗口径のスプレーノズルを配置し、下
部の細口径のスプレーノズルで生じた小滴を捕集
する。 The dust in the gas collides with water droplets and is collected, and the smaller the water droplets are, the smaller the dust particles can be collected. The slurry liquid spray nozzle 7 in the absorption section 2 needs to have a relatively large diameter so as not to be scaled by solid matter. Therefore, since the droplets in the absorption section 2 are large, the dust particles that can be collected are also limited to relatively large particles. If the liquid is water with little slurry, a smaller diameter spray nozzle can be used and therefore
The spray droplets are also small. In this sense, in the washing part 3, by spraying smaller water droplets than in the absorption part 2, it is possible to collect soot and dust that cannot be collected in the absorption part 2 and mist scattered from the absorption part 2. However, if the water droplets generated in the water washing section 3 are too small, the mist eliminator 13 may not be able to fully collect them. A spray nozzle with a coarse diameter is placed to create a spray nozzle with a narrow diameter at the bottom, and small droplets generated by a spray nozzle with a narrow diameter at the bottom are collected.
なお水洗部３の液中へのダストの蓄積を防止す
るため、一部の液は吸収部２のエリミネータ１０
の洗浄水等のためブローする。また吸収部２では
吸収液の一部を矢印１６で示すように排出し、ま
た洗浄水タンク１１には矢印１７で示すように工
業用水等を補給する。 In addition, in order to prevent dust from accumulating in the liquid in the washing section 3, some of the liquid is removed from the eliminator 10 in the absorption section 2.
Blow for cleaning water etc. Further, in the absorption section 2, a part of the absorption liquid is discharged as shown by an arrow 16, and the washing water tank 11 is replenished with industrial water etc. as shown by an arrow 17.
上述のように、本考案の排煙処理用スプレー塔
は、吸収部の上部にトレイと複数段のスプレー段
とからなる水洗部を備えているから、従来のスラ
リースプレーでは水滴が大きくて捕集できなかつ
たばいじんを該水洗部で捕集することができ、し
かも、従来の吸収塔で若干再飛散していたと考え
られるスラリー液も捕集できる。また水洗部にト
レイを採用したことにより、吸収部と水洗部を一
つの塔にすることができ、据付面積が少なくてす
む。また水洗部のスプレー段は、最上段に粗粒径
を生ぜしめるスプレーノズルを有するから、微細
なミストはここで捕集され、大気へ放出されるこ
とがない。 As mentioned above, the spray tower for flue gas treatment of the present invention is equipped with a water washing section consisting of a tray and multiple spray stages above the absorption section, so it is difficult to collect large water droplets in conventional slurry spray. The water-washing section can collect the unresolved soot and dust, and also collect some of the slurry liquid that would have been re-splattered in the conventional absorption tower. Furthermore, by using a tray in the water washing section, the absorption section and the water washing section can be combined into one tower, reducing the installation area. Furthermore, since the spray stage of the water washing section has a spray nozzle at the top stage that produces coarse particles, fine mist is collected here and is not released into the atmosphere.
図は本考案の一実施例の概要を示した立面図で
ある。
１……吸収塔、２……吸収部、３……水洗部、
４……トレイ、５……吸収剤供給管、６……ガス
入口ノズル、７……吸収部スプレーノズル、８…
…液溜めタンク、９……循環ポンプ、１０……ミ
ストエリミネータ、１１……洗浄水タンク、１２
……水洗ポンプ、１３……ミストエリミネータ、
１４……ガス出口、１５……水洗部スプレーノズ
ル。
The figure is an elevational view showing an outline of an embodiment of the present invention. 1...Absorption tower, 2...Absorption section, 3...Water washing section,
4... Tray, 5... Absorbent supply pipe, 6... Gas inlet nozzle, 7... Absorption section spray nozzle, 8...
...Liquid reservoir tank, 9...Circulation pump, 10...Mist eliminator, 11...Washing water tank, 12
...Flush pump, 13...Mist eliminator,
14...Gas outlet, 15...Water washing section spray nozzle.
Claims (1)
湿式排煙脱硫装置の吸収塔において、該吸収部の
上部に設けられたトレイと、このトレイよりも上
部に設けられた複数段のスプレー段とからなる水
洗部を備え、かつ、前記スプレー段の下段には、
小粒径を生ぜしめるスプレーノズルを有し、最上
段には、粗粒径を生ぜしめるスプレーノズルを有
することを特徴とする、排煙用スプレー塔。 In an absorption tower of a wet flue gas desulfurization equipment having an absorption section that performs desulfurization using an absorbent, a tray provided above the absorption section, and multiple spray stages provided above this tray. The lower part of the spray stage is equipped with a water washing part consisting of:
1. A spray tower for smoke exhaust, characterized in that it has a spray nozzle that produces small particle diameters, and a spray nozzle that produces coarse particle diameters at the top stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18971980U JPS6113057Y2 (en) | 1980-12-30 | 1980-12-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18971980U JPS6113057Y2 (en) | 1980-12-30 | 1980-12-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57115630U JPS57115630U (en) | 1982-07-17 |
| JPS6113057Y2 true JPS6113057Y2 (en) | 1986-04-23 |
Family
ID=29993914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18971980U Expired JPS6113057Y2 (en) | 1980-12-30 | 1980-12-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6113057Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE526647C2 (en) * | 2004-02-20 | 2005-10-18 | Goetaverken Miljoe Ab | Scrubber for purification of gases in several stages |
| JP5817971B2 (en) * | 2011-06-22 | 2015-11-18 | 三菱日立パワーシステムズ株式会社 | Wet flue gas desulfurization apparatus and wet flue gas desulfurization method |
| JP5868722B2 (en) * | 2012-02-10 | 2016-02-24 | 三菱日立パワーシステムズ株式会社 | Flare equipment and dust reduction method thereof |
-
1980
- 1980-12-30 JP JP18971980U patent/JPS6113057Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57115630U (en) | 1982-07-17 |
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