JPH05337333A - Simultaneous removal of low-concentration nox and sox - Google Patents
Simultaneous removal of low-concentration nox and soxInfo
- Publication number
- JPH05337333A JPH05337333A JP4142938A JP14293892A JPH05337333A JP H05337333 A JPH05337333 A JP H05337333A JP 4142938 A JP4142938 A JP 4142938A JP 14293892 A JP14293892 A JP 14293892A JP H05337333 A JPH05337333 A JP H05337333A
- Authority
- JP
- Japan
- Prior art keywords
- nox
- exhaust gas
- gas
- sox
- zone
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
- F24F3/1423—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant with a moving bed of solid desiccants, e.g. a rotary wheel supporting solid desiccants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/10—Rotary wheel
- F24F2203/1016—Rotary wheel combined with another type of cooling principle, e.g. compression cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/10—Rotary wheel
- F24F2203/1032—Desiccant wheel
- F24F2203/1036—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/10—Rotary wheel
- F24F2203/1056—Rotary wheel comprising a reheater
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/10—Rotary wheel
- F24F2203/1072—Rotary wheel comprising two rotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/10—Rotary wheel
- F24F2203/1084—Rotary wheel comprising two flow rotor segments
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/10—Rotary wheel
- F24F2203/1092—Rotary wheel comprising four flow rotor segments
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、たとえば、各種道路ト
ンネル、山岳トンネル、海底トンネル、地下道路、シェ
ルター付道路等（本明細書では、これらのトンネルを総
称して「道路トンネル等」と呼ぶこことする）における
換気排ガス中に含有される比較的低濃度の窒素酸化物
（ＮＯｘ）および硫黄酸化物（ＳＯｘ）を同時に効率よ
く除去して換気排ガスを浄化する低濃度ＮＯｘおよびＳ
Ｏｘの同時除去方法に関する。BACKGROUND OF THE INVENTION The present invention relates to various road tunnels, mountain tunnels, subsea tunnels, underground roads, sheltered roads, etc. (in this specification, these tunnels are collectively referred to as "road tunnels"). Here, the low concentration NOx and S that purify the ventilation exhaust gas by simultaneously and efficiently removing relatively low concentrations of nitrogen oxides (NOx) and sulfur oxides (SOx) contained in the ventilation exhaust gas in
The present invention relates to a method for simultaneously removing Ox.
【０００２】[0002]
【従来の技術および解決すべき課題】道路トンネル等に
おいて、特に長大で自動車交通量の多いものについて
は、運転者、通行者等の健康保護や明視距離の改善を目
的にトンネル内の空気を相当量吸引排気すなわち換気す
る必要がある。また、比較的短距離のトンネルでも都市
部あるいはその近郊では、出入口部に集中する一酸化炭
素（ＣＯ）、ＮＯｘ等による大気汚染を防止するため
に、やはりトンネル内空気の換気が行われている。かく
して生じた換気排ガスは、ＮＯｘおよびＳＯｘを少なか
らず含有しているため、同排ガスをそのまま周囲に放散
したのでは、その地域の環境汚染を招くばかりか、特に
自動車排ガスによる汚染が平面的に拡がっている都市部
あるいはその近郊では高度の汚染地域を拡大させること
にもなりかねない。既設道路の公害対策として道路のト
ンネル化、シェルター設置を図る場合も、前述の事情は
全く同じである。2. Description of the Related Art In a road tunnel or the like, especially for a long and heavy car traffic, the air in the tunnel is protected for the purpose of protecting the health of drivers and pedestrians and improving the visual distance. A considerable amount of suction or exhaust or ventilation is required. Even in a relatively short-distance tunnel, in the urban area or its suburbs, the air in the tunnel is still ventilated in order to prevent air pollution due to carbon monoxide (CO), NOx, etc. concentrated in the entrance and exit. .. The ventilation exhaust gas thus generated contains a considerable amount of NOx and SOx. Therefore, if the exhaust gas is directly emitted to the surroundings, it not only causes environmental pollution in the area, but in particular, the pollution caused by automobile exhaust gas spreads flatly. Highly contaminated areas could be expanded in existing urban areas or their suburbs. The above-mentioned situation is exactly the same when a road tunnel is constructed or a shelter is installed as a measure against pollution of the existing road.
【０００３】本発明は、特に、このような道路トンネル
等の換気排ガス中に含有される低濃度のＮＯｘおよびＳ
Ｏｘを同時に効率よく除去して換気排ガスの浄化を行う
方法に関するものである。The present invention is particularly applicable to low concentrations of NOx and S contained in exhaust gas from ventilation of such road tunnels.
The present invention relates to a method for efficiently removing Ox at the same time to purify ventilation exhaust gas.
【０００４】従来より道路トンネル換気排ガスの浄化シ
ステムはいくつか提案されているが、これらはいずれも
回転吸着式脱硝装置によってＮＯｘを除去することを企
図したものであり、換気排ガス中のＳＯｘは未処理のま
ま系外へ排出されていた。したがって、道路トンネル等
の換気排ガス中に含有される低濃度のＮＯｘおよびＳＯ
ｘを同時に効率よく除去する方法は、未だ開発されてい
ない。Conventionally, several purification systems for exhaust ventilation from road tunnels have been proposed, but these are all intended to remove NOx by a rotary adsorption type denitration device, and SOx in ventilation exhaust gas is not yet present. It was discharged as it was from the system. Therefore, low concentrations of NOx and SO contained in exhaust gas from ventilation such as road tunnels.
A method for efficiently removing x at the same time has not yet been developed.
【０００５】本発明の目的は、上記の点に鑑み、低濃度
のＮＯｘおよびＳＯｘを同時に効率よく除去することが
できる方法を提供することにある。In view of the above points, an object of the present invention is to provide a method capable of efficiently removing low concentrations of NOx and SOx at the same time.
【０００６】[0006]
【課題を解決するための手段】本発明による低濃度窒素
酸化物の吸着除去方法は、上記課題を解決すべく工夫さ
れたものであり、回転吸着式脱硝装置(2) の前流に設置
されている調湿塔(1)において排ガスを湿式脱硫処理
し、ついで同ガスを回転吸着式脱硝装置(2) において脱
硝処理することを特徴とするものである。The method for adsorbing and removing low-concentration nitrogen oxides according to the present invention is devised to solve the above-mentioned problems, and is installed in the upstream of the rotary adsorption type denitration device (2). In the humidity control tower (1), the exhaust gas is subjected to a wet desulfurization treatment, and then the same gas is subjected to a denitration treatment in the rotary adsorption type denitration device (2).
【０００７】排ガスを湿式脱硫処理する調湿塔(1) は、
回転吸着式脱硝システムにおける前処理装置として設置
されているものである。この調湿塔(1) において、排ガ
スは冷水と直接接触させられ、ガス湿度が低下され、そ
の結果、飽和水蒸気圧が下げられて、水分が一部凝縮す
る。こうして、排ガスの調湿が行われる。The humidity control tower (1) for performing wet desulfurization of exhaust gas is
It is installed as a pretreatment device in a rotary adsorption type denitration system. In this humidity control tower (1), the exhaust gas is brought into direct contact with cold water to lower the gas humidity, and as a result, the saturated steam pressure is lowered, and the water is partially condensed. In this way, the humidity of the exhaust gas is adjusted.
【０００８】この調湿と同時に、排ガス中のＳＯｘが冷
水中に捕捉される。その結果、液は酸性化するので、こ
の液に水酸化ナトリウム、炭酸ナトリウムなどのアルカ
リを供給して、液を中和する。こうして排ガス中のＳＯ
ｘは８０％以上除去される。Simultaneously with this humidity control, SOx in the exhaust gas is captured in cold water. As a result, since the liquid is acidified, alkali such as sodium hydroxide or sodium carbonate is supplied to the liquid to neutralize the liquid. Thus SO in exhaust gas
X is removed by 80% or more.
【０００９】脱硫処理された排ガスは、ついで回転吸着
式脱硝装置(2) へ送られ、ここで脱硝処理される。The desulfurized exhaust gas is then sent to a rotary adsorption type denitration device (2) where it is denitrated.
【００１０】回転吸着式脱硝装置(2) は、ＮＯｘ吸着剤
ローター(12)がガス流れに対し直角方向に連続移動され
るものであって、ＮＯｘ吸着ゾーンと、同吸着ゾーンの
回転方向前方の未再生吸着剤予熱用の予熱ゾーンと、予
熱ゾーンの回転方向前方の吸着剤再生ゾーンと、再生ゾ
ーンと吸着ゾーンとの間の再生吸着剤冷却用の冷却ゾー
ンとを備えている。In the rotary adsorption type denitration device (2), the NOx adsorbent rotor (12) is continuously moved in the direction perpendicular to the gas flow, and the NOx adsorption zone and the front of the NOx adsorption zone in the rotational direction of the adsorption zone. It comprises a preheating zone for preheating the unregenerated adsorbent, an adsorbent regeneration zone in front of the preheating zone in the direction of rotation, and a cooling zone for cooling the regenerated adsorbent between the regeneration zone and the adsorption zone.
【００１１】回転吸着式脱硝装置(2) には、ＮＯｘ含有
換気排ガスを吸着ゾーンに流通させる排ガス管路(8)
と、ＮＯｘ除去後の浄化済みガスの少なくとも一部を冷
却ゾーンに流通させる冷却ガス管路(9) と、再生ゾーン
および予熱ゾーンを通って再生用循環ガスを循環させる
ガス循環管路(14)とが配設されている。The rotary adsorption type denitration device (2) is provided with an exhaust gas pipe (8) for circulating NOx-containing ventilation exhaust gas to the adsorption zone.
And a cooling gas pipeline (9) for circulating at least a part of the purified gas after removal of NOx to the cooling zone, and a gas circulation pipeline (14) for circulating the circulation gas for regeneration through the regeneration zone and the preheating zone. And are provided.
【００１２】この構造の回転吸着式脱硝装置(2) におい
て、ガス循環管路(14)上で再生用循環ガスをＮＨ3 ガス
注入後に脱硝反応器(5) に通し、脱硝処理ガスで吸着剤
を再生する。[0012] In rotary adsorption type denitrating apparatus of this structure (2), gas circulation line (14) on the denitration reactor regeneration recycle gas after NH 3 gas injected at through (5), the adsorbent in the denitrification process gas To play.
【００１３】ここで、吸着剤の例としては、ハニカム構
造に一体成形した合成ゼオライト担体に塩化銅アンモニ
ウムのような銅塩を担持したものが好適に使用される。Here, as an example of the adsorbent, a synthetic zeolite carrier integrally formed in a honeycomb structure and carrying a copper salt such as copper ammonium chloride is preferably used.
【００１４】脱硝反応器(5) は、脱硝触媒の存在下にＮ
Ｈ3 を還元剤として用いＮＯｘをＮ2 とＨ2 Ｏに選択的
に接触還元するものである。The denitration reactor (5) is operated in the presence of a denitration catalyst to remove N 2.
Using H 3 as a reducing agent, NOx is selectively catalytically reduced to N 2 and H 2 O.
【００１５】[0015]
【実施例】以下に示す実施例をもって、本発明を具体的
に説明する。EXAMPLES The present invention will be specifically described with reference to the following examples.
【００１６】実施例１ 道路トンネル換気排ガスの浄化システムの例を第１図の
フローに示す。Example 1 An example of a purification system for exhaust gas from a road tunnel ventilation is shown in the flow chart of FIG.
【００１７】同フローにおいて、ＮＯｘを含有する未浄
化換気排ガスは、まず、調湿塔(1)において、冷水と直
接接触させられ、ガス湿度が低下され、その結果、飽和
水蒸気圧が下げられて、水分が一部凝縮する。こうし
て、排ガスの調湿が行われると同時に、冷水中にＳＯｘ
が捕捉され、排ガス中のＳＯｘは８０％以上除去され
る。In the same flow, the unpurified ventilation exhaust gas containing NOx is first brought into direct contact with cold water in the humidity control tower (1) to reduce the gas humidity and, as a result, the saturated steam pressure is lowered. , Some water is condensed. In this way, the humidity of the exhaust gas is adjusted and at the same time, SOx is added to the cold water.
Are captured, and SOx in the exhaust gas is removed by 80% or more.
【００１８】処理液はＳＯｘの捕捉により次第に酸性化
するので、この液にアルカリ供給管路(10)からポンプ(1
1)によって水酸化ナトリウム、炭酸ナトリウムなどを含
むアルカリ液が供給され、液が中和される。こうして脱
湿および脱硝処理された排ガスは、調湿塔(1) の頂部で
ヒートポンプ式ガス冷却器(3) によってさらに冷却除湿
された後、排ガス管路(8) により回転式脱湿装置(13)へ
送られる。その後、排ガスは、メインブロアー(15)によ
って昇圧され、乾燥状態で回転吸着式脱硝装置(2) へ導
かれる。Since the treatment liquid is gradually acidified by capturing SOx, this treatment liquid is pumped (1) from the alkali supply pipe (10).
By 1), an alkaline solution containing sodium hydroxide, sodium carbonate, etc. is supplied to neutralize the solution. The exhaust gas dehumidified and denitrated in this way is further cooled and dehumidified by the heat pump type gas cooler (3) at the top of the humidity control tower (1), and then the rotary dehumidification device (13) by the exhaust gas pipe (8). ) Is sent to. After that, the exhaust gas is pressurized by the main blower (15) and guided to the rotary adsorption type denitration device (2) in a dry state.
【００１９】回転吸着式脱硝装置(2) は、図２に示すよ
うに、ＮＯｘ吸着ゾーンと、同吸着ゾーンの回転方向前
方の未再生吸着剤予熱用の予熱ゾーンと、予熱ゾーンの
回転方向前方の吸着剤再生ゾーンと、再生ゾーンと吸着
ゾーンとの間の再生吸着剤冷却用の冷却ゾーンとより成
る。同脱硝装置(2) には、ハニカム構造に一体成形した
合成ゼオライト担体に塩化銅アンモニウムのような銅塩
を担持したものよりなるＮＯｘ吸着剤ローター(12)が、
回転自在に配設されている。As shown in FIG. 2, the rotary adsorption type denitration device (2) comprises a NOx adsorption zone, a preheating zone for preheating the unregenerated adsorbent in front of the adsorption zone in the rotational direction, and a forward direction in the rotational direction of the preheating zone. Adsorbent regeneration zone and a cooling zone for cooling the regenerated adsorbent between the regeneration zone and the adsorption zone. The NOx adsorbent rotor (12) comprises a NOx adsorbent rotor (12) consisting of a synthetic zeolite carrier integrally formed in a honeycomb structure and a copper salt such as copper ammonium chloride supported on the same.
It is rotatably arranged.
【００２０】ＮＯｘ吸着剤ローター(12)を軸方向に見て
同ローター(12)の半円形のＮＯｘ吸着部に連通したＮＯ
ｘ吸着ゾーンに脱湿後の換気ガスが流れるように、吸着
式脱湿装置から吸着式脱硝装置(2) へ換気ガス管路(8)
が配されている。また、同ローター(12)の他の半円形部
分は３つの扇形部分、すなわちＮＯｘ吸着部の回転方向
前方の予熱部と、これの回転方向前方の吸着部と、これ
の回転方向前方の冷却部とより成る。これら３つの扇形
部分にはそれぞれ、未再生吸着剤予熱用の予熱ゾーン
と、吸着剤再生用の再生ゾーンと、再生吸着剤冷却用の
冷却ゾーンとが連通している。そして、冷却ゾーンにＮ
Ｏｘ吸着剤冷却用ガスを流通させる冷却ガス管路(9) が
配され、同管路(9) にＮＯｘ吸着剤冷却用ガスとして浄
化後の換気ガスの一部を通すようになされている。When the NOx adsorbent rotor (12) is viewed in the axial direction, the NO communicated with the semicircular NOx adsorbing portion of the rotor (12).
x Ventilation gas line (8) from the adsorption type dehumidifier to the adsorption type denitration device (2) so that the ventilation gas after dehumidification flows to the adsorption zone
Are arranged. Further, the other semi-circular portion of the rotor (12) is three fan-shaped portions, that is, a preheating portion in front of the NOx adsorbing portion in the rotation direction, an adsorption portion in front of the rotation direction, and a cooling portion in front of the rotation direction. Consists of A preheating zone for preheating unregenerated adsorbent, a regeneration zone for adsorbent regeneration, and a cooling zone for cooling regenerated adsorbent are in communication with each of these three fan-shaped portions. And N in the cooling zone
A cooling gas pipe (9) for circulating the Ox adsorbent cooling gas is arranged, and a part of the purified ventilation gas is passed through the pipe (9) as a NOx adsorbent cooling gas.
【００２１】再生ゾーンおよび予熱ゾーンを通ってＮＨ
3 含有再生用循環ガスを循環させるガス循環管路(14)が
配されている。同循環管路(14)の再生ゾーン上流にはヒ
ーター(6) が、その上流にはブロアー(4) がそれぞれ設
けられている。そして、ＮＯｘ吸着剤ローター(12)は、
矢印（A)の方向に回転させられる。NH through the regeneration and preheat zones
A gas circulation pipe line (14) for circulating the circulation gas for containing 3 is provided. A heater (6) is installed upstream of the regeneration zone of the circulation line (14), and a blower (4) is installed upstream thereof. And the NOx adsorbent rotor (12)
It is rotated in the direction of arrow (A).
【００２２】ガス循環管路(14)における再生ゾーン上流
には脱硝反応器(5) が設けられ、脱硝反応器(5) にはＮ
Ｈ3 が供給されている。A denitration reactor (5) is provided upstream of the regeneration zone in the gas circulation line (14), and the denitration reactor (5) has N
H 3 is supplied.
【００２３】上記構成の回転吸着式脱硝装置(2) におい
て、ＮＯｘを含有する排ガスは吸着式脱湿装置(13)から
回転吸着式脱硝装置(2) のＮＯｘ吸着ゾーンへ送られ、
同ゾーンにおいてＮＯｘ吸着剤ローター(12)のＮＯｘ吸
着部によって排ガス中のＮＯｘが吸着除去される。ＮＯ
ｘを吸着した吸着剤ローター(12)の予熱部は、予熱ゾー
ンにおいてガス循環管路(14)によって循環させられる再
生用循環ガスで予熱され、また再生部は再生ゾーンにお
いて同ガスによって脱着再生される。再生用循環ガス中
に含まれる脱着ＮＯｘは、ガス循環管路(14)に設置され
た脱硝反応器(5) においてＮＨ3 で還元無害化される。
したがって、吸着剤ローター(12)の再生部はこの脱硝処
理後の再生用循環ガスで再生される。ＮＯｘを脱着した
ＮＯｘ吸着剤ローター(12)の冷却部は、冷却ゾーンにお
いて冷却ガス管路(9) を通る浄化済み排ガスによって冷
却される。かくして、ＮＯｘ吸着剤ローター(12)の回転
によりＮＯｘ含有排ガスの脱硝、ＮＯｘ吸着剤の予熱、
再生および冷却が連続的に行われる。In the rotary adsorption type denitration apparatus (2) having the above structure, the exhaust gas containing NOx is sent from the adsorption type dehumidifying apparatus (13) to the NOx adsorption zone of the rotary adsorption type denitration apparatus (2),
In the same zone, NOx in the exhaust gas is adsorbed and removed by the NOx adsorbing portion of the NOx adsorbent rotor (12). NO
The preheating part of the adsorbent rotor (12) having adsorbed x is preheated by the recycle gas for circulation which is circulated by the gas circulation line (14) in the preheating zone, and the regenerating part is desorbed and regenerated by the same gas in the regeneration zone. It The desorbed NOx contained in the recycle gas is detoxified with NH 3 in the denitration reactor (5) installed in the gas circulation pipe (14).
Therefore, the regeneration section of the adsorbent rotor (12) is regenerated with the circulation gas for regeneration after this denitration treatment. The cooling part of the NOx adsorbent rotor (12) from which NOx has been desorbed is cooled by the purified exhaust gas passing through the cooling gas pipe (9) in the cooling zone. Thus, rotation of the NOx adsorbent rotor (12) denitrates the NOx-containing exhaust gas, preheats the NOx adsorbent,
Regeneration and cooling are performed continuously.
【００２４】回転吸着式脱硝装置(2) から出た浄化ガス
は、ヒーター(7) で加熱された後、吸着式脱湿装置(13)
に通されその脱湿剤の再生に利用される。その後、同ガ
スは冷水塔(16)に通され、系外へ放出される。The purified gas discharged from the rotary adsorption type denitration device (2) is heated by the heater (7), and then the adsorption type dehumidification device (13).
And used to regenerate the dehumidifying agent. After that, the gas is passed through the cold water tower (16) and discharged to the outside of the system.
【００２５】[0025]
【発明の効果】本発明によれば、回転吸着式脱硝装置
(2) の前流に設置されている調湿塔(1)において排ガス
を湿式脱硫処理し、ついで同ガスを回転吸着式脱硝装置
(2) において脱硝処理するので、道路トンネル等の換気
排ガス中に含有される低濃度のＮＯｘおよびＳＯｘを同
時に効率よく除去することができる。According to the present invention, a rotary adsorption type denitration device is provided.
The exhaust gas is subjected to wet desulfurization in the humidity control tower (1) installed in the upstream of (2), and then the same gas is subjected to rotary adsorption denitration equipment.
Since the denitration treatment is performed in (2), it is possible to efficiently remove low concentrations of NOx and SOx contained in the exhaust gas from ventilation such as road tunnels at the same time.
【図１】この発明の方法を示すフローシートである。FIG. 1 is a flow sheet showing the method of the present invention.
【図２】回転吸着式脱硝装置を示す斜視図である。FIG. 2 is a perspective view showing a rotary adsorption type denitration device.
(1) ：調湿塔 (2) ：回転吸着式脱硝装置 (5) ：脱硝反応器 (1): Humidity control tower (2): Rotary adsorption type denitration device (5): Denitration reactor
───────────────────────────────────────────────────── フロントページの続き (72)発明者 岩本 皓夫 大阪市此花区西九条５丁目３番28号 日立 造船株式会社内 (72)発明者 羽木 一博 大阪市此花区西九条５丁目３番28号 日立 造船株式会社内 (72)発明者 鬼塚 重則 大阪市此花区西九条５丁目３番28号 日立 造船株式会社内 (72)発明者 市来 正義 大阪市此花区西九条５丁目３番28号 日立 造船株式会社内 (72)発明者 渡辺 高延 大阪市此花区西九条５丁目３番28号 日立 造船株式会社内 (72)発明者 福寿 厚 大阪市此花区西九条５丁目３番28号 日立 造船株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akio Iwamoto 5-3-8 Nishi-Kujo, Konohana-ku, Osaka City Hitachi Shipbuilding Co., Ltd. No. 28 In Hitachi Shipbuilding Co., Ltd. (72) Inventor Shigenori Onizuka 5-3-3 Nishikujo, Konohana-ku, Osaka No. 28 In Hitachi Shipbuilding Co., Ltd. (72) Inventor Takanobu Watanabe 5-3, Nishi Kujo, Konohana-ku, Osaka City No. 28 Hitachi Shipbuilding Co., Ltd. Issue Hitachi Shipbuilding Co., Ltd.
Claims (1)
れている調湿塔(1)において排ガスを湿式脱硫処理し、
ついで同ガスを回転吸着式脱硝装置(2) において脱硝処
理することを特徴とする低濃度ＮＯｘおよびＳＯｘの同
時除去方法。1. Exhaust gas is subjected to wet desulfurization treatment in a humidity control tower (1) installed upstream of a rotary adsorption type denitration device (2),
Next, a method for simultaneous removal of low-concentration NOx and SOx, characterized in that the same gas is subjected to denitration treatment in a rotary adsorption type denitration device (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4142938A JPH05337333A (en) | 1992-06-03 | 1992-06-03 | Simultaneous removal of low-concentration nox and sox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4142938A JPH05337333A (en) | 1992-06-03 | 1992-06-03 | Simultaneous removal of low-concentration nox and sox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05337333A true JPH05337333A (en) | 1993-12-21 |
Family
ID=15327140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4142938A Withdrawn JPH05337333A (en) | 1992-06-03 | 1992-06-03 | Simultaneous removal of low-concentration nox and sox |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05337333A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003053132A (en) * | 2001-08-13 | 2003-02-25 | Mitsubishi Heavy Ind Ltd | Exhaust gas treating agent and exhaust gas treating equipment utilizing the same |
| WO2003004134A3 (en) * | 2001-06-30 | 2003-04-17 | Gerd Gaiser | Method for purifying exhaust gases |
| JP2005164148A (en) * | 2003-12-03 | 2005-06-23 | Daikin Ind Ltd | Humidity conditioning device |
| CN102872697A (en) * | 2012-09-28 | 2013-01-16 | 浙江树人大学 | Method for denitrating cupric halide substances by aid of alcohol |
| CN104776727A (en) * | 2015-04-16 | 2015-07-15 | 河北鼎磊建材有限公司 | Efficient purifying method for exhausted tail gases from firing of gangue baked bricks in portable tunnel kiln |
| JP5795423B1 (en) * | 2014-12-19 | 2015-10-14 | 株式会社西部技研 | Absorption type removal and concentration equipment |
-
1992
- 1992-06-03 JP JP4142938A patent/JPH05337333A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003004134A3 (en) * | 2001-06-30 | 2003-04-17 | Gerd Gaiser | Method for purifying exhaust gases |
| JP2003053132A (en) * | 2001-08-13 | 2003-02-25 | Mitsubishi Heavy Ind Ltd | Exhaust gas treating agent and exhaust gas treating equipment utilizing the same |
| JP2005164148A (en) * | 2003-12-03 | 2005-06-23 | Daikin Ind Ltd | Humidity conditioning device |
| CN102872697A (en) * | 2012-09-28 | 2013-01-16 | 浙江树人大学 | Method for denitrating cupric halide substances by aid of alcohol |
| JP5795423B1 (en) * | 2014-12-19 | 2015-10-14 | 株式会社西部技研 | Absorption type removal and concentration equipment |
| JP5877922B1 (en) * | 2014-12-19 | 2016-03-08 | 株式会社西部技研 | Absorption type removal and concentration equipment |
| JP2016117052A (en) * | 2014-12-19 | 2016-06-30 | 株式会社西部技研 | Absorption type removal/condensation device |
| CN104776727A (en) * | 2015-04-16 | 2015-07-15 | 河北鼎磊建材有限公司 | Efficient purifying method for exhausted tail gases from firing of gangue baked bricks in portable tunnel kiln |
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Legal Events
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| A300 | Withdrawal of application because of no request for examination |
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