JP2001025635A - Apparatus for removing nox in waste gas - Google Patents
Apparatus for removing nox in waste gasInfo
- Publication number
- JP2001025635A JP2001025635A JP11231819A JP23181999A JP2001025635A JP 2001025635 A JP2001025635 A JP 2001025635A JP 11231819 A JP11231819 A JP 11231819A JP 23181999 A JP23181999 A JP 23181999A JP 2001025635 A JP2001025635 A JP 2001025635A
- Authority
- JP
- Japan
- Prior art keywords
- waste gas
- removal
- removing device
- liquid
- nox
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/10—Capture or disposal of greenhouse gases of nitrous oxide (N2O)
Landscapes
- Treating Waste Gases (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、工業製品の製造、加工
工程で発生する廃ガス中の含有するＮＯｘを除去させる
装置に関するものであり、詳細には、廃ガス中のＮＯｘ
の除去の効率化が図れ除去装置の小型化を可能とする廃
ガス中のＮＯｘの除去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 an apparatus for removing NOx contained in waste gas generated in the production and processing of industrial products, and more particularly to an apparatus for removing NOx contained in waste gas.
The present invention relates to a device for removing NOx in waste gas, which can improve the efficiency of removal of NOx and can reduce the size of the removal device.
【０００２】[0002]
【従来技術】従来、この種の廃ガス中のＮＯｘの除去を
目的とした除去装置は各種開発されており、廃ガス中の
ＮＯｘを処理して環境を汚染しないようにして大気中に
放出するように工場等に設備されている。2. Description of the Related Art Hitherto, various types of removal apparatuses for removing NOx in waste gas of this kind have been developed, and NOx in waste gas is treated and released to the atmosphere without polluting the environment. It is installed in factories.
【０００３】[0003]
【解決しようとする課題】然し乍、廃ガス中のＮＯｘを
完全に除去することは困難を極めており、ＮＯｘを１０
０パーセント除去するためには長い時間と高価な設備を
必要としており、工場等から排出される多量の廃ガスを
順次処理してＮＯｘを完全に除去できる除去装置は無
く、廃ガス中のＮＯｘを高効率で除去できる除去装置の
出現が切望されている。However, it is extremely difficult to completely remove NOx in waste gas.
It takes a long time and expensive equipment to remove 0%, and there is no removal device that can sequentially treat a large amount of waste gas discharged from factories or the like to completely remove NOx, and NOx in waste gas is removed. There is a long-felt need for a removal device that can be removed with high efficiency.
【０００４】[0004]
【課題を解決する手段】本発明は、前述の問題点に鑑
み、研鑽の結果、第１除去装置と、第１除去装置と並設
させた第２除去装置と、第１除去装置の下方辺から導入
され上方から排出され前記第２除去装置の下方辺から導
入され上方から排出される廃ガス通気系と、第１除去装
置の下段に設けた下段除去手段と、下段除去手段の上方
の第１除去装置の上段に設けた上段除去手段と、第２除
去装置に設けた第２除去手段とを備えたものであり、更
に、夫々の除去手段は、下方に設けた除去液溜部と、除
去液溜部の上方に設けた気液混合部と、気液混合部の上
方に設けた除去液噴射部と、除去液噴射部と除去液溜部
とを循環ポンプを介装して接続した除去液の循環配管系
とを備えたものであり、加えて、下段除去手段で用いる
除去液はＨ２ＯにＮａＯＨを１重量パーセント乃至１０
重量バーセントを添加し、更に、Ｎａ２Ｓ２Ｏ３を添加
してＰＨ１０乃至ＰＨ１３に成るように調整し、上段除
去手段で用いる除去液はＨ２ＯにＨ２Ｏ２又はＮａＯＨ
を１重量パーセント乃至１０重量パーセントを添加し、
更に、ＣｌＯ２又はＮａＯＣｌ２を添加してＰＨ１０乃
至ＰＨ１３に成るように調整し、第２除去手段で用いる
除去液はＨ２ＯにＮａＯＨを重量１パーセント乃至１０
重量パーセントを添加し、更に、Ｎａ２Ｓ２Ｏ３を添加
してＰＨ１０乃至ＰＨ１３に成るように調整したもので
ある。SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention has been studied and as a result, a first removing device, a second removing device juxtaposed with the first removing device, and a lower side of the first removing device. A waste gas ventilation system which is introduced from above, is discharged from above, is introduced from the lower side of the second removing device, and is discharged from above, a lower removing means provided at a lower stage of the first removing device, and a second removing device provided above the lower removing device. 1 removing device provided in the upper stage of the removing device, and the second removing device provided in the second removing device, further each removing means, a removing liquid reservoir provided below, The gas-liquid mixing section provided above the removal liquid storage section, the removal liquid injection section provided above the gas-liquid mixing section, and the removal liquid injection section and the removal liquid storage section were connected via a circulation pump. are those having a circulation piping system of the removal solution, addition, removal solution used in the lower removal means in H 2 O 1 aOH weight percent to 10
Added weight Basento, further adjusted to PH10 to PH13 by adding Na 2 S 2 O 3, removing liquid used in the upper removal means H 2 O 2 or NaOH in H 2 O
From 1% to 10% by weight,
Further, ClO 2 or NaOCl 2 is added to adjust to PH10 to PH13, and the removal liquid used in the second removal means is NaOH in H 2 O with a weight of 1% to 10%.
The weight percent was added, and further Na 2 S 2 O 3 was added to adjust the pH to 10 to 13.
【０００５】従って、本発明の目的は、廃ガス中のＮＯ
ｘを高効率で除去させる処理装置に創達し、これを提供
することを目的としたものである。Accordingly, it is an object of the present invention to provide a method for reducing the amount of NO in waste gas.
The purpose of the present invention is to create and provide a processing apparatus for removing x with high efficiency.
【０００６】[0006]
【作用】本発明は、第１除去装置に下段除去手段と上段
除去手段とを夫々設け、第２除去装置に第２除去手段を
設けたことと、下段除去手段で用いる除去液はＨ２Ｏに
ＮａＯＨを１重量パーセント乃至１０重量パーセントを
添加し、更に、Ｎａ２Ｓ２Ｏ３を添加してＰＨ１０乃至
ＰＨ１３に成るように調整し、上段除去手段で用いる除
去液はＨ２ＯにＨ２Ｏ２又はＮａＯＨを１重量パーセン
ト乃至１０重量パーセントを添加し、更に、ＣｌＯ２又
はＮａＯＣｌ２を添加してＰＨ１０乃至ＰＨ１３に成る
ように調整し、第２除去手段で用いる除去液はＨ２Ｏに
ＮａＯＨを重量１パーセント乃至１０重量パーセントを
添加し、更に、Ｎａ２Ｓ２Ｏ３を添加してＰＨ１０乃至
ＰＨ１３に成るように調整したことにより、廃ガス中の
ＮＯｘの高効率の除去を可能としたものである。According to the present invention, the first removing device is provided with a lower removing device and an upper removing device, respectively, the second removing device is provided with a second removing device, and the removing liquid used in the lower removing device is H 2 O. NaOH is added in an amount of 1 to 10% by weight, and Na 2 S 2 O 3 is further added to adjust to PH10 to PH13. The removing solution used in the upper removing means is H 2 O to H 2 O 2 or NaOH is added in an amount of 1% to 10% by weight, and further, ClO 2 or NaOCl 2 is added to adjust to PH10 to PH13. The removing solution used in the second removing means is H 2 O. NaOH was added by weight 1% to 10% by weight, further, by was adjusted to PH10 to PH13 by adding Na 2 S 2 O 3, N in the waste gas It is obtained by allowing the removal of the high efficiency of x.
【０００７】[0007]
【実施例】以下、本発明の廃ガス中のＮＯｘ除去装置を
実施例の図面によって具体的に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an apparatus for removing NOx in waste gas according to the present invention will be described in detail with reference to the accompanying drawings.
【０００８】図１は本発明の廃ガス中のＮＯｘ除去装置
の実施例を説明するための概要図である。FIG. 1 is a schematic diagram for explaining an embodiment of an apparatus for removing NOx in waste gas according to the present invention.
【０００９】本発明は、工業製品の製造、加工工程で発
生するＮＯｘを含有する廃ガス中のＮＯｘを除去させる
装置に関するものであり、詳細には、廃ガス中のＮＯｘ
の除去の効率化が図れ小型化の可能なＮＯｘの除去装置
に関するものであり、請求項１に記載の廃ガス中のＮＯ
ｘ除去装置は、第１除去装置１と、該第１除去装置１と
並設させた第２除去装置２と、前記第１除去装置１の下
方辺から導入され上方から排出され前記第２除去装置２
の下方辺から導入され上方から排出される廃ガス通気系
３と、前記第１除去装置１の下段に設けた下段除去手段
４と、該下段除去手段４の上方の前記第１除去装置１の
上段に設けた上段除去手段５と、前記第２除去装置２に
設けた第２除去手段６とを備えたものである。The present invention relates to an apparatus for removing NOx in waste gas containing NOx generated in manufacturing and processing of industrial products, and more particularly, to an apparatus for removing NOx in waste gas.
The present invention relates to an apparatus for removing NOx, which can improve the efficiency of removal of NOx and can reduce the size of the NOx.
The x removing device includes a first removing device 1, a second removing device 2 juxtaposed with the first removing device 1, and a second removing device introduced from a lower side of the first removing device 1 and discharged from above. Device 2
A waste gas ventilation system 3 that is introduced from the lower side and is discharged from above, a lower stage removing unit 4 provided in a lower stage of the first removing unit 1, and the first removing unit 1 above the lower stage removing unit 4. It comprises an upper removing means 5 provided in an upper part and a second removing means 6 provided in the second removing device 2.
【００１０】更に、請求項２に記載の廃ガス中のＮＯｘ
除去装置は、請求項１に記載の廃ガス中のＮＯｘ除去装
置において、前記夫々の除去手段４．５．６は、下方に
設けた除去液溜部４ａ．５ａ．６ａと、該除去液溜部４
ａ．５ａ．６ａの上方に設けた気液混合部４ｂ．５ｂ．
６ｂと、該気液混合部４ｂ．５ｂ．６ｂの上方に設けた
除去液噴射部４ｃ．５ｃ．６ｃと、該除去液噴射部４
ｃ．５ｃ．６ｃと前記除去液溜部４ａ．５ａ．６ａとを
循環ポンプ４ｄ．５ｄ．６ｄを介装して接続した除去液
の循環配管系４ｅ．５ｅ．６ｅとを夫々備えたものであ
る。Furthermore, NOx in waste gas according to claim 2
2. The removing device according to claim 1, wherein each of the removing means 4.5.6 is provided with a removing liquid reservoir 4a. 5a. 6a and the removal liquid reservoir 4
a. 5a. 6a provided above the gas-liquid mixing section 4b. 5b.
6b and the gas-liquid mixing section 4b. 5b. 6b provided above the removal liquid ejecting section 4c. 5c. 6c and the removing liquid ejecting section 4
c. 5c. 6c and the removal liquid reservoir 4a. 5a. 6a and a circulation pump 4d. 5d. 6d and a removal liquid circulation piping system 4e. 5e. 6e.
【００１１】加えて、請求項３に記載の廃ガス中のＮＯ
ｘ除去装置は、請求項１又は請求項２に記載の廃ガス中
のＮＯｘ除去装置において、前記下段除去手段４で用い
る除去液はＨ２ＯにＮａＯＨを１重量パーセント乃至１
０重量パーセントを添加し、更に、Ｎａ２Ｓ２Ｏ３を添
加してＰＨ１０乃至ＰＨ１３に成るように調整し、前記
上段除去手段５で用いる除去液はＨ２ＯにＨ２Ｏ２又は
ＮａＯＨを１重量パーセント乃至１０重量パーセントを
添加し、更に、ＣｌＯ２又はＮａＯＣｌ２を添加してＰ
Ｈ１０乃至ＰＨ１３に成るように調整し、前記第２除去
手段６で用いる除去液はＨ２ＯにＮａＯＨを重量１パー
セント乃至１０重量パーセントを添加し、更に、Ｎａ２
Ｓ２Ｏ３を添加してＰＨ１０乃至ＰＨ１３に成るように
調整したものである。In addition, NO in the waste gas according to claim 3
The apparatus for removing NOx in waste gas according to claim 1 or 2, wherein the removal liquid used in the lower removal means 4 is Na 2 to H 2 O in an amount of 1% by weight to 1% by weight.
0% by weight, and further, Na 2 S 2 O 3 is added to adjust to PH10 to PH13. The removing solution used in the upper removing means 5 is H 2 O by adding H 2 O 2 or NaOH. 1% to 10% by weight and then ClO 2 or NaOCl 2 to add P
Adjusted to H10 to pH 13, removing liquid used in the second removing means 6 by adding weight 1% to 10% by weight of NaOH in H 2 O, further, Na 2
It was adjusted to PH10 to PH13 by adding S 2 O 3 .
【００１２】即ち、本発明の廃ガス中のＮＯｘの除去装
置は工業製品の製造、加工工場の排気や、これ等の製
造、加工工程の製造、加工ラインが設備されているブロ
ック等から発生する廃ガスに含有するＮＯｘを高効率で
除去させるものである。That is, the apparatus for removing NOx in waste gas according to the present invention is produced from the production of industrial products, the exhaust of processing plants, the production of these products, the production of processing steps, the blocks provided with processing lines, and the like. This is to remove NOx contained in the waste gas with high efficiency.
【００１３】そして、図１に図示する如く、本発明の廃
ガス中のＮＯｘの除去装置の第１除去装置１と第２除去
装置２とは塔状のもので略同形状のもので並設させてお
り、後述する廃ガス通気系３の配管で接続されているも
のである。As shown in FIG. 1, the first removing device 1 and the second removing device 2 of the device for removing NOx in waste gas according to the present invention are tower-shaped and have substantially the same shape and are juxtaposed. It is connected by a pipe of a waste gas ventilation system 3 described later.
【００１４】次いで、第１除去装置１には下段に下段除
去手段４を設け、上段に上段除去手段５を設けたもので
あり、第２除去装置２には第２除去手段６を設けている
ものである。Next, the first removing device 1 is provided with a lower removing device 4 in a lower stage and an upper removing device 5 in an upper stage, and the second removing device 2 is provided with a second removing device 6. Things.
【００１５】次に、廃ガス通気系３は第１除去装置１の
下方辺から工場等の廃ガスを導入され、下段除去手段４
と上段除去手段５とを通過させ、第１除去装置１の上方
から排出され、更に、配管により第２除去装置２の下方
辺から導入され、第２除去手段６を通過させ、第２除去
装置２の上方から大気中に排出されるものである。Next, the waste gas aeration system 3 is supplied with waste gas from a factory or the like from the lower side of the first removing device 1, and the lower stage removing means 4 is provided.
And the upper removal means 5, and is discharged from above the first removal apparatus 1, further introduced from the lower side of the second removal apparatus 2 by piping, passed through the second removal means 6, and passed through the second removal apparatus 2 is discharged into the atmosphere from above.
【００１６】つまり、廃ガス中のＮＯｘは第１除去装置
１の下段除去手段４と上段除去手段５、及び、第２除去
装置２の第２除去手段６を通過させて除去するものであ
る。That is, NOx in the waste gas is removed by passing through the lower removing means 4 and the upper removing means 5 of the first removing device 1 and the second removing means 6 of the second removing device 2.
【００１７】更に、夫々の除去手段４．５．６、即ち、
下段除去手段４と上段除去手段５、及び、第２除去手段
６とは、夫々の除去液を貯溜する除去液溜部４ａ．５
ａ．６ａを下方に設け、除去液溜部４ａ．５ａ．６ａの
上方には廃ガスと除去液とを混合させる気液混合部４
ｂ．５ｂ．６ｂを設けており、気液混合部４ｂ．５ｂ．
６ｂの上方には除去液をミスト状に噴霧させる除去液噴
射部４ｃ．５ｃ６ｃを設けると共に、除去液を循環させ
るための循環配管系４ｅ．５ｅ．６ｅは循環ポンプ４
ｄ．５ｄ．６ｄを介装して除去液噴射部４ｃ．５ｃ６ｃ
と除去液溜部４ａ．５ａ．６ａとを接続しているもので
ある。Further, each of the removing means 4.5.6, ie,
The lower removing means 4, the upper removing means 5, and the second removing means 6 are provided with removing liquid reservoirs 4a. 5
a. 6a is provided below, and the removal liquid reservoirs 4a. 5a. Above 6a, a gas-liquid mixing section 4 for mixing the waste gas and the removal liquid
b. 5b. 6b, and the gas-liquid mixing section 4b. 5b.
6b, a removing liquid spraying unit 4c. 5c, 6c and a circulation piping system 4e. 5e. 6e is a circulation pump 4
d. 5d. 6d, the removal liquid ejecting section 4c. 5c6c
And the removal liquid reservoir 4a. 5a. 6a.
【００１８】尚、実施例では上段除去手段５の気液混合
部５ｂの下方には除去液の受け皿５ｆを設けており、気
液混合部５ｂで廃ガスと混合された除去液は受け皿５ｆ
で一旦受けて、配管５ｇにより下方に設けた除去液溜部
５ａに戻しているもので、受け皿５ｆには下方からの廃
ガスは通過するが、上方からの除去液は受けれるように
しているものである。In the embodiment, a receiving liquid tray 5f is provided below the gas-liquid mixing section 5b of the upper removing means 5, and the removing liquid mixed with the waste gas in the gas-liquid mixing section 5b receives the removing liquid 5f.
Once, and is returned to the removal liquid reservoir 5a provided below by the pipe 5g, so that the waste gas from below passes through the receiving tray 5f, but the removal liquid from above can be received. Things.
【００１９】加えて、ＮＯｘの除去液は、下段除去手段
４では、Ｈ２ＯにＮａＯＨを１重量バーセント乃至１０
重量パーセントを添加し、更に、Ｎａ２Ｓ２Ｏ３を添加
してＰＨ１０乃至ＰＨ１３に成るように調整されている
ものである。In addition, the NOx removal liquid is supplied to the lower removal means 4 by adding NaOH to H 2 O at a weight percentage of 10 to 10%.
The weight percent is added, and further Na 2 S 2 O 3 is added to adjust the pH to 10 to 13.
【００２０】更には、上段除去手段５で使用されるＮＯ
ｘの除去液は、Ｈ２ＯにＨ２Ｏ２又はＮａＯＨを１重量
パーセント乃至１０重量パーセントを添加し、更に、Ｃ
ｌＯ２又はＮａＯＣｌ２を添加してＰＨ１０乃至ＰＨ１
３に成るように調整されているものである。Further, the NO used in the upper stage removing means 5
removing solution of x, H 2 O 2 or NaOH was added to 1% by weight to 10% by weight in H 2 O, Furthermore, C
10 to PH1 by adding 10 2 or NaOCl 2
3 is adjusted.
【００２１】そして、第２除去手段６で使用されるＮＯ
ｘの除去液は、Ｈ２ＯにＮａＯＨを重量１パーセント乃
至１０重量パーセントを添加し、更に、Ｎａ２Ｓ２Ｏ３
を添加してＰＨ１０乃至ＰＨ１３に成るように調整され
ているものである。The NO used in the second removing means 6
The removal solution of x is obtained by adding 1% to 10% by weight of NaOH to H 2 O and further adding Na 2 S 2 O 3
Is adjusted to be PH10 to PH13.
【００２２】先ず、廃ガスは下段除去手段４の気液混合
部４ｂを通過中にＨ２ＯにＮａＯＨを１重量パーセント
乃至１０重量パーセントを添加し、更に、Ｎａ２Ｓ２Ｏ
３を添加してＰＨ１０乃至ＰＨ１３に成るように調整さ
れた除去液を噴霧され、次に、上方に移動され上段除去
手段５の気液混合部５ｂを通過中にＨ２ＯにＨ２Ｏ２又
はＮａＯＨを１重量パーセント乃至１０重量パーセント
を添加し、更に、ＣｌＯ２又はＮａＯＣｌ２を添加して
ＰＨ１０乃至ＰＨ１３に成るように調整された除去液を
噴霧され、更に、廃ガス通気系３の配管を通り、第２除
去手段６の気液混合部６ｂを通過中にＨ２ＯにＮａＯＨ
を重量１パーセント乃至１０重量パーセントを添加し、
更に、Ｎａ２Ｓ２Ｏ３を添加してＰＨ１０乃至ＰＨ１３
に成るように調整された除去液を噴霧されるものであ
る。First, 1% to 10% by weight of NaOH is added to H 2 O while the waste gas passes through the gas-liquid mixing section 4b of the lower removal means 4, and Na 2 S 2 O is further added.
Is sprayed adjusted remover as comprising 3 was added to the PH10 to pH 13, then, H 2 O 2 in H 2 O while passing through the gas-liquid mixing portion 5b of the upper removal device 5 is moved upward Alternatively, NaOH is added in an amount of 1% by weight to 10% by weight, and further, ClO 2 or NaOCl 2 is added thereto, and a removal liquid adjusted to PH 10 to PH 13 is sprayed. To the H 2 O while passing through the gas-liquid mixing section 6 b of the second removing means 6.
From 1% to 10% by weight,
Further, Na 2 S 2 O 3 is added to adjust the pH from PH10 to PH13.
The removal liquid adjusted so as to be sprayed is sprayed.
【００２３】[0023]
【発明の効果】本発明の廃ガス中のＮＯｘ除去装置は、
前述の構成によって、高効率で廃ガス中のＮＯｘ除去す
るもので、従来８０パーセント程度の除去率であったも
のを一気に９５パーセント乃至９８パーセントの除去を
可能とし、更に、従来、廃ガスの処理速度が０．２ｍ／
ｓｅｃ乃至０．５ｍ／ｓｅｃであったものを１．０ｍ／
ｓｅｃまでスピードアップすることを可能としており、
従って、除去装置の小型化が図れるものであり、実用性
の高い極めて有意義な効果を奏するものである。According to the present invention, the apparatus for removing NOx in waste gas is as follows.
According to the above-described structure, NOx in waste gas can be removed with high efficiency, and it is possible to remove 95% to 98% at a stretch from a removal rate of about 80% in the past. Speed 0.2m /
from 0.5 m / sec to 1.0 m / sec
It is possible to speed up to sec,
Accordingly, the size of the removing device can be reduced, and a highly practical and highly significant effect can be obtained.
【図１】図１は本発明の廃ガス中のＮＯｘ除去装置の実
施例を説明するための概要図である。FIG. 1 is a schematic diagram for explaining an embodiment of an apparatus for removing NOx in waste gas of the present invention.
１ 第１除去装置 ２ 第２除去装置 ３ 廃ガス通気系 ４ 下段除去手段 ４ａ 除去液溜部 ４ｂ 気液混合部 ４ｃ 除去液噴射部 ４ｄ 循環ポンプ ４ｅ 循環配管系 ５ 上段除去手段 ５ａ 除去液溜部 ５ｂ 気液混合部 ５ｃ 除去液噴射部 ５ｄ 循環ポンプ ５ｅ 循環配管系 ５ｆ 受け皿 ５ｇ 配管 ６ 第２除去手段 ６ａ 除去液溜部 ６ｂ 気液混合部 ６ｃ 除去液噴射部 ６ｄ 循環ポンプ ６ｅ 循環配管系 DESCRIPTION OF SYMBOLS 1 1st removal apparatus 2 2nd removal apparatus 3 Waste gas ventilation system 4 Lower stage removal means 4a Removal liquid storage part 4b Gas-liquid mixing part 4c Removal liquid injection part 4d Circulation pump 4e Circulation piping system 5 Upper removal means 5a Removal liquid storage part 5b Gas-liquid mixing section 5c Removal liquid injection section 5d Circulation pump 5e Circulation piping system 5f Receiving tray 5g Pipe 6 Second removal means 6a Removal liquid storage section 6b Gas-liquid mixing section 6c Removal liquid injection section 6d Circulation pump 6e Circulation piping system
Claims (3)
せた第２除去装置と、前記第１除去装置の下方辺から導
入され上方から排出され前記第２除去装置の下方辺から
導入され上方から排出される廃ガス通気系と、前記第１
除去装置の下段に設けた下段除去手段と、該下段除去手
段の上方の前記第１除去装置の上段に設けた上段除去手
段と、前記第２除去装置に設けた第２除去手段とを備え
たことを特徴とする廃ガス中のＮＯｘ除去装置。A first removing device, a second removing device juxtaposed with the first removing device, and a lower side of the second removing device introduced from a lower side of the first removing device and discharged from above. A waste gas ventilation system which is introduced from above and discharged from above,
A lower removing unit provided in a lower stage of the removing device, an upper removing unit provided in an upper stage of the first removing device above the lower removing unit, and a second removing unit provided in the second removing device. A device for removing NOx in waste gas, characterized in that:
液溜部と、該除去液溜部の上方に設けた気液混合部と、
該気液混合部の上方に設けた除去液噴射部と、該除去液
噴射部と前記除去液溜部とを循環ポンプを介装して接続
した除去液の循環配管系とを夫々備えたことを特徴とす
る請求項１に記載の廃ガス中のＮＯｘ除去装置。2. The method according to claim 1, wherein each of the removing units includes a removing liquid reservoir provided below, a gas-liquid mixing unit provided above the removing liquid reservoir,
A removing liquid ejecting section provided above the gas-liquid mixing section; and a removing liquid circulating piping system which connects the removing liquid ejecting section and the removing liquid reservoir via a circulating pump. The apparatus for removing NOx in waste gas according to claim 1, wherein:
にＮａＯＨを１重量パーセント乃至１０重量パーセント
を添加し、更に、Ｎａ２Ｓ２Ｏ３を添加してＰＨ１０乃
至ＰＨ１３に成るように調整し、前記上段除去手段で用
いる除去液はＨ２ＯにＨ２Ｏ２又はＮａＯＨを１重量パ
ーセント乃至１０重量パーセントを添加し、更に、Ｃｌ
Ｏ２又はＮａＯＣｌ２を添加してＰＨ１０乃至ＰＨ１３
に成るように調整し、前記第２除去手段で用いる除去液
はＨ２ＯにＮａＯＨを重量１パーセント乃至１０重量パ
ーセントを添加し、更に、Ｎａ２Ｓ２Ｏ３を添加してＰ
Ｈ１０乃至ＰＨ１３に成るように調整したことを特徴と
する請求項１又は請求項２に記載の廃ガス中のＮＯｘ除
去装置。3. The removal liquid used in the lower removal means is H 2 O.
1% to 10% by weight of NaOH and further adjusted to pH 10 to PH13 by adding Na 2 S 2 O 3, and the removing solution used in the upper removing means is H 2 O to H 2 O. 1 to 10 weight percent of 2 O 2 or NaOH is added and
O 2 or NaOCl 2 by the addition of PH10 or PH13
The removal liquid used in the second removal means is prepared by adding 1 to 10% by weight of NaOH to H 2 O, and further adding Na 2 S 2 O 3 to P 2.
The apparatus for removing NOx in waste gas according to claim 1 or 2, wherein the apparatus is adjusted to have a pressure of H10 to PH13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11231819A JP2001025635A (en) | 1999-07-15 | 1999-07-15 | Apparatus for removing nox in waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11231819A JP2001025635A (en) | 1999-07-15 | 1999-07-15 | Apparatus for removing nox in waste gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001025635A true JP2001025635A (en) | 2001-01-30 |
Family
ID=16929524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11231819A Pending JP2001025635A (en) | 1999-07-15 | 1999-07-15 | Apparatus for removing nox in waste gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001025635A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015504367A (en) * | 2011-11-21 | 2015-02-12 | フルーア・テクノロジーズ・コーポレイション | Prevention of nitroamine formation in carbon dioxide adsorption process. |
-
1999
- 1999-07-15 JP JP11231819A patent/JP2001025635A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015504367A (en) * | 2011-11-21 | 2015-02-12 | フルーア・テクノロジーズ・コーポレイション | Prevention of nitroamine formation in carbon dioxide adsorption process. |
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