JPS63182023A - Treatment of exhaust gas by pulse charge - Google Patents
Treatment of exhaust gas by pulse chargeInfo
- Publication number
- JPS63182023A JPS63182023A JP62013484A JP1348487A JPS63182023A JP S63182023 A JPS63182023 A JP S63182023A JP 62013484 A JP62013484 A JP 62013484A JP 1348487 A JP1348487 A JP 1348487A JP S63182023 A JPS63182023 A JP S63182023A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- dust removal
- dust
- pulse
- sent
- 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
- 239000007789 gas Substances 0.000 claims abstract description 31
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052815 sulfur oxide Inorganic materials 0.000 claims abstract description 10
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 9
- 238000010278 pulse charging Methods 0.000 claims description 5
- 239000012670 alkaline solution Substances 0.000 claims description 3
- 239000000428 dust Substances 0.000 abstract description 20
- 238000006477 desulfuration reaction Methods 0.000 abstract description 6
- 230000023556 desulfurization Effects 0.000 abstract description 6
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 239000003513 alkali Substances 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 3
- 238000005507 spraying Methods 0.000 abstract 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 abstract 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 abstract 1
- 235000011116 calcium hydroxide Nutrition 0.000 abstract 1
- 239000000920 calcium hydroxide Substances 0.000 abstract 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 8
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002250 absorbent Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000012719 wet electrostatic precipitator Substances 0.000 description 1
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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Treating Waste Gases (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、ボイラなどの燃焼排ガスに適用されるパルス
荷電による排ガス処理方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an exhaust gas treatment method using pulse charging applied to combustion exhaust gas from a boiler or the like.
［従来の技術と問題点］
従来、同時脱硫、脱硝法については、オゾンを用いてＮ
ｏをＮｏ２．Ｎ２Ｏ３、Ｎ２ ｏｓ等に酸化後、アルカ
リ吸収剤で窒素酸化物（ＮＯｘ ）。[Conventional technology and problems] Conventionally, simultaneous desulfurization and denitrification methods use ozone to
o as No.2. After oxidation to N2O3, N2os, etc., nitrogen oxides (NOx) are removed with an alkaline absorbent.
硫黄酸化物（ＳＯｘ）を除去する方法が提案されている
。また、オゾン添加の変わりに湿式電気集塵器内でのコ
ロナ放電によりオゾンを生成しＮＯを酸化するとともに
、同時にアルカリ吸収剤でＮＯｘ、ＳＯｘを除去する方
法が提案されている。Methods for removing sulfur oxides (SOx) have been proposed. Furthermore, instead of adding ozone, a method has been proposed in which ozone is generated by corona discharge in a wet electrostatic precipitator to oxidize NO, and at the same time, NOx and SOx are removed using an alkaline absorbent.
しかしながら、従来の方法では、Ｎｏの酸化に必要なオ
ゾンを生成するための消費電力が大きく、経済面で実用
的でないという問題を有する。However, the conventional method has a problem in that it consumes a large amount of power to generate the ozone necessary for oxidizing No, and is not economically practical.
本発明は上記事情に鑑みてなされたもので、排ガス中の
Ｎｏをエネルギ的に効率よく酸化せしめ、経済的な湿式
同時脱じん、脱硫、脱硝を可能にし得るパルス電荷によ
る排ガス処理方法を提供することを目的とする。The present invention has been made in view of the above circumstances, and provides an exhaust gas treatment method using pulsed charges that can energetically and efficiently oxidize No in exhaust gas and enable economical simultaneous wet dust removal, desulfurization, and denitrification. The purpose is to
［問題点を解決するための手段と作用］本発明は、硫黄
酸化物及び窒素酸化物を含む排ガスにパルスストリーマ
を照射して酸化させた後、アルカリ液を添加させて前記
硫黄酸化物及び窒素酸化物を吸収除去することを要旨と
する。[Means and effects for solving the problems] The present invention irradiates exhaust gas containing sulfur oxides and nitrogen oxides with a pulse streamer to oxidize the exhaust gas, and then adds an alkali solution to remove the sulfur oxides and nitrogen oxides. Its purpose is to absorb and remove oxides.
本発明において、パルスストリーマとはパルス荷電方式
で印加電圧を−Ｌげていった時に発生する電子、イオン
の流れ（正負量電荷の混在するプラズマ部分）を言うも
のであり、パルス荷電であることに変りない。In the present invention, the pulse streamer refers to the flow of electrons and ions (plasma part where positive and negative charges are mixed) that is generated when the applied voltage is decreased by -L in a pulse charging method, and it is pulse charging. There is no change.
本発明によれば、排ガス中のＮｏをエネルギ的に効率良
く酸化し、経済的に湿式同時脱じん、脱硫、脱硝を行な
える。According to the present invention, No in exhaust gas can be energetically efficiently oxidized, and simultaneous wet dust removal, desulfurization, and denitration can be performed economically.
［実施例］ 以下、本発明の一実施例を図を参照して説明する。[Example] An embodiment of the present invention will be described below with reference to the drawings.
図中の１は反応・除塵部である。この反応・除塵部１の
前流側には、排ガス３にパルスストリームが照射される
冷却・除塵部２が設けられている。1 in the figure is the reaction/dust removal section. On the upstream side of this reaction/dust removal section 1, a cooling/dust removal section 2 is provided in which the exhaust gas 3 is irradiated with a pulse stream.
また、前記反応・除塵部２の後流側には、グリッドやト
レイなどの充填材が設けられた吸収部４が設けられてい
る。なお、前記グリッドやトレイは、気液接触効果を挙
げて反応効率を向上させるためのものである。Furthermore, on the downstream side of the reaction/dust removal section 2, there is provided an absorption section 4 provided with a filler such as a grid or a tray. Note that the grid or tray is used to improve reaction efficiency by producing a gas-liquid contact effect.
かかる構造の装置を用いて本実施例では、次のようにし
て排ガスの処理を行う。In this embodiment, using an apparatus having such a structure, exhaust gas is treated as follows.
■まず、排ガス３が冷却・除塵部２に送られてくると、
スプレィ水により増湿断熱冷却される。■First, when the exhaust gas 3 is sent to the cooling/dust removal section 2,
Humidification and adiabatic cooling are achieved by spray water.
また、同時に排ガス中のダストの一部は、スプレィ水に
より捕集される。At the same time, part of the dust in the exhaust gas is collected by the spray water.
■次いで、排ガス３は反応・除塵部１へ送られ、ここで
パルスストリームにより生成された０３゜Ｏにより排ガ
ス３中のＮｏが酸化され、Ｎ０２゜Ｎ２０３ 、Ｎ２０
５などになる。また、排ガス３中のダストの一部が更に
除去される。■Next, the exhaust gas 3 is sent to the reaction/dust removal section 1, where No in the exhaust gas 3 is oxidized by 03°O generated by the pulse stream, and becomes N02°N203, N20
5 etc. Further, part of the dust in the exhaust gas 3 is further removed.
■この後、排ガス３は吸収部４に送られ、ここで例えば
Ｃａ（ＯＨ）ｚなどのアルカリ液をスプレィされ、ＮＯ
２、Ｎ２０３ 、Ｎ２０５ などに酸化されたＮＯｘ及
びＳＯｘが吸収除去される。■After this, the exhaust gas 3 is sent to the absorption section 4, where it is sprayed with an alkaline solution such as Ca(OH)z, and NO
2. NOx and SOx oxidized to N203, N205, etc. are absorbed and removed.
しかして、上記実施例によれば、反応・除塵部１で排ガ
ス３にパルスストリーマを照射して排ガス３中のＮＯを
ＮＯ２，Ｎ２ ｏｓなどに酸化した後、吸収部４で排ガ
ス３にアルカリ液をスプレィして反応・除塵部１で酸化
されたＮＯｘ及びやＳＯｘを吸収除去するため、排ガス
中のＮｏを効率良く酸化せしめ、経済的な湿式同時脱じ
ん、脱硫、脱硝を行うことができる。According to the above embodiment, after the reaction/dust removal section 1 irradiates the exhaust gas 3 with a pulse streamer to oxidize NO in the exhaust gas 3 into NO2, N2 os, etc., the absorption section 4 injects an alkaline solution into the exhaust gas 3. is sprayed to absorb and remove oxidized NOx and SOx in the reaction/dust removal section 1. Therefore, NO in the exhaust gas can be efficiently oxidized, and economical wet-type simultaneous dust removal, desulfurization, and denitration can be performed.
［発明の効果］
以上詳述した如く本発明によれば、排ガス中のＮｏをエ
ネルギ的に効率よく酸化せしめ、経済的な湿式同時脱し
ん、脱硫、脱硝を可能にし得るパルス電荷による排ガス
処理方法を提供できる。[Effects of the Invention] As detailed above, according to the present invention, there is provided an exhaust gas treatment method using a pulse charge that can energy-efficiently oxidize No in exhaust gas and enable economical simultaneous wet dephosphorization, desulfurization, and denitrification. can be provided.
図は本発明の一実施例に係るパルス荷電による排ガス処
理方法の説明図である。
１・・・反応・除塵部、２・・・冷却・除塵部、３・・
・排ガス、４・・・吸収部。The figure is an explanatory diagram of an exhaust gas treatment method using pulse charging according to an embodiment of the present invention. 1... Reaction/dust removal section, 2... Cooling/dust removal section, 3...
・Exhaust gas, 4...absorption section.
Claims (1)
ーマを照射して酸化させた後、アルカリ液を添加させて
前記硫黄酸化物及び窒素酸化物を吸収除去することを特
徴とするパルス荷電による排ガス処理方法。Exhaust gas treatment by pulse charging, characterized in that exhaust gas containing sulfur oxides and nitrogen oxides is oxidized by irradiation with a pulse streamer, and then an alkaline solution is added to absorb and remove the sulfur oxides and nitrogen oxides. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62013484A JPS63182023A (en) | 1987-01-23 | 1987-01-23 | Treatment of exhaust gas by pulse charge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62013484A JPS63182023A (en) | 1987-01-23 | 1987-01-23 | Treatment of exhaust gas by pulse charge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63182023A true JPS63182023A (en) | 1988-07-27 |
Family
ID=11834391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62013484A Pending JPS63182023A (en) | 1987-01-23 | 1987-01-23 | Treatment of exhaust gas by pulse charge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63182023A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101632897B (en) | 2009-08-07 | 2011-09-14 | 清华大学 | Method for simultaneously removing sulfur oxides and nitric oxides in flue gas |
| WO2011147085A1 (en) * | 2010-05-26 | 2011-12-01 | Ecospec Global Technology Pte Ltd. | Methods and system for removing gas components from flue gas |
| CN102631834A (en) * | 2012-04-19 | 2012-08-15 | 深圳力合环保技术有限公司 | Flue gas desulfurization system and method |
| CN106268222A (en) * | 2016-09-30 | 2017-01-04 | 成都信息工程大学 | Ammonia spray photocatalyst dielectric barrier discharge method simultaneous SO_2 and NO removal the method for resource |
-
1987
- 1987-01-23 JP JP62013484A patent/JPS63182023A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101632897B (en) | 2009-08-07 | 2011-09-14 | 清华大学 | Method for simultaneously removing sulfur oxides and nitric oxides in flue gas |
| WO2011147085A1 (en) * | 2010-05-26 | 2011-12-01 | Ecospec Global Technology Pte Ltd. | Methods and system for removing gas components from flue gas |
| US8529855B2 (en) | 2010-05-26 | 2013-09-10 | Ecospec Global Technology Pte Ltd. | Methods and system for removing gas components from flue gas |
| CN102631834A (en) * | 2012-04-19 | 2012-08-15 | 深圳力合环保技术有限公司 | Flue gas desulfurization system and method |
| CN106268222A (en) * | 2016-09-30 | 2017-01-04 | 成都信息工程大学 | Ammonia spray photocatalyst dielectric barrier discharge method simultaneous SO_2 and NO removal the method for resource |
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