WO2013094938A1 - Appareil de dénitrification pour fumée - Google Patents

Appareil de dénitrification pour fumée Download PDF

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Publication number
WO2013094938A1
WO2013094938A1 PCT/KR2012/010881 KR2012010881W WO2013094938A1 WO 2013094938 A1 WO2013094938 A1 WO 2013094938A1 KR 2012010881 W KR2012010881 W KR 2012010881W WO 2013094938 A1 WO2013094938 A1 WO 2013094938A1
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Prior art keywords
exhaust gas
reaction tube
pipe
reaction
adsorbent
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PCT/KR2012/010881
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English (en)
Korean (ko)
Inventor
노기우
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에스코 주식회사
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Publication of WO2013094938A1 publication Critical patent/WO2013094938A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8621—Removing nitrogen compounds
    • B01D53/8625—Nitrogen oxides
    • B01D53/8631—Processes characterised by a specific device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/54—Nitrogen compounds
    • B01D53/56—Nitrogen oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9404—Removing only nitrogen compounds
    • B01D53/9409—Nitrogen oxides
    • B01D53/9431—Processes characterised by a specific device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9481—Catalyst preceded by an adsorption device without catalytic function for temporary storage of contaminants, e.g. during cold start
    • B01D53/949—Catalyst preceded by an adsorption device without catalytic function for temporary storage of contaminants, e.g. during cold start for storing sulfur oxides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
    • F01N3/085—Sulfur or sulfur oxides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066—Selective catalytic reduction [SCR]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/90—Physical characteristics of catalysts
    • B01D2255/904—Multiple catalysts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
    • F01N2590/10—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for stationary applications
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relates to a soot denitrification apparatus, and more particularly, to a soot denitrification apparatus using a selective reduction catalyst (SCR) system capable of removing sulfur poisoning and reducing rust of low-temperature exhaust gas.
  • SCR selective reduction catalyst
  • SCR devices are commonly used to purify rusty.
  • the performance and lifespan of the SCR device is compromised by sulfur, the poison material of the catalyst.
  • the rust contained in the exhaust gas is removed from the SCR module, but if sulfur is adsorbed to the SCR module, the performance and life of the SCR module is impaired. Therefore, in order to suppress sulfur poisoning in general, it is necessary to maintain the temperature of the high exhaust gas, but it is difficult to remove the sulfur poisoning for the equipment that is difficult to maintain the high temperature exhaust gas.
  • An object of the present invention is to provide a soot denitrification apparatus that can prevent sulfur poisoning and reduce rust in a device for discharging low-temperature exhaust gas such as a ship or a land plant.
  • the soot denitrification apparatus includes an exhaust pipe and a reaction means.
  • the reaction means includes an ammonia injector, a mixer, a first adsorbent, and a first rust remover, and is installed to reduce the rust in the exhaust gas discharged from the exhaust pipe and to send the exhaust gas to the exhaust pipe.
  • the ammonia injector injects ammonia for mixing with the exhaust gas discharged from the exhaust pipe.
  • the mixer mixes the ammonia injected from the ammonia injector and the exhaust gas discharged from the exhaust pipe.
  • the first adsorbent adsorbs sulfur contained in the off-gas passing through the mixer.
  • the first rust remover removes rust from exhaust gas that has passed through the first sorbent.
  • soot denitrification device preferably further comprises a heater for heating the exhaust gas supplied to the reaction means to remove the sulfur adsorbed in the first adsorbent.
  • soot denitrification device preferably further comprises a control means for controlling the amount of the exhaust gas discharged from the exhaust pipe flows into the reaction means.
  • the soot denitrification device preferably further comprises a reaction tube branched from the exhaust pipe through the heater to be connected to the reaction means after the exhaust gas discharged from the exhaust pipe is introduced into the reaction means and introduced into the exhaust pipe.
  • the control means is installed in the exhaust pipe before the reaction pipe is branched after the reaction tube is branched by the bypass damper for opening and closing the exhaust pipe, and the reaction to control the amount of exhaust gas flowing into the heater
  • the main damper is provided to open and close the pipe.
  • the reaction means may further include a second adsorbent and a second rusty remover, which are sequentially installed so that the exhaust gas passing through the first rusty remover passes.
  • the soot denitrification apparatus further includes an auxiliary supply pipe and an auxiliary damper.
  • the auxiliary supply pipe is connected to the reaction means so as to branch from the reaction tube after passing through the heater and before flowing into the reaction means, to flow between the first rusty remover and the second adsorbent.
  • the auxiliary damper is installed in the auxiliary supply pipe to open and close the auxiliary supply pipe.
  • the reaction tube is branched into the first reaction tube and the second reaction tube after exiting the reaction means and before the first reaction tube and the second reaction tube are introduced into the exhaust pipe. It is preferable that these are combined and introduced into the exhaust pipe.
  • the soot denitrification apparatus further includes an exhaust fan, an outlet main damper, and an outlet bypass damper.
  • the exhaust fan is installed in the second reaction tube.
  • the outlet main damper is installed in the first reaction tube to open and close the first reaction tube.
  • the outlet bypass damper is installed in the second reaction tube to open and close the second reaction tube.
  • the soot denitrification apparatus preferably further includes a recirculation pipe, a recirculation supply damper, and a recirculation discharge damper.
  • the recirculation tube is branched from the second reaction tube and connected to merge with the reaction tube before the discharge gas is introduced into the heater.
  • the recirculation supply damper is installed in the recirculation pipe to open and close the recirculation pipe.
  • the recirculation discharge damper is installed in the second reaction tube after the recirculation tube is branched and before being combined with the first reaction tube to open and close the second reaction tube.
  • the first and second rust removers are preferably selective catalytic reduction modules.
  • the first adsorbent and the second adsorbent are installed at the front end of the selective catalytic reduction (SCR) module, low-temperature exhaust gas is removed to supply sulfur to the selective catalytic reduction module.
  • SCR selective catalytic reduction
  • the exhaust gas is heated and sent to the first and second adsorbents.
  • sulfur coated on the first adsorbent and the second adsorbent may be removed due to the heated exhaust gas.
  • control means having a bypass damper and the main damper since the control means having a bypass damper and the main damper is installed, there is no specification of soot and when the exhaust gas discharged by the use of low quality fuel is supplied, the exhaust gas is not directly passed through the reaction means. It can be discharged to the outside to protect the reaction means.
  • FIG. 1 is a conceptual diagram of an embodiment of a soot denitrification apparatus according to the present invention
  • FIG. 2 is a conceptual diagram of another embodiment of a soot denitrification apparatus according to the present invention.
  • first adsorbent 21 first rusty remover
  • reaction tube 41 first reaction tube
  • the soot denitrification apparatus includes an exhaust pipe (10), a reaction means (15), a heater (30), a control means (35), a reaction tube (40), an auxiliary supply pipe (45), and an auxiliary damper. 47, an exhaust fan 49, an outlet main damper 51, and an outlet bypass damper 53.
  • the exhaust gas is discharged to the exhaust pipe 10.
  • the reaction tube 40 is a tube in which the reaction means 15 for removing the rust of the exhaust gas discharged from the exhaust pipe 10 is installed, branched from one side of the exhaust pipe 10, and then connected to the other side of the exhaust pipe 10. do. At this time, the reaction tube 40 is divided into the first reaction tube 41 and the second reaction tube 43, and then joined again to be connected to the other side of the exhaust pipe 10.
  • the reaction means 15 is installed in the reaction tube 40 and has an ammonia injector 17, a mixer 18, a first adsorbent 19, a first rusty remover 21, and a second adsorbent 23. ) And a second rusty remover 25. At this time, these components are exhaust gas supplied to the reaction means 15, the ammonia injector 17, the mixer 18, the first adsorbent 19, the first rusty remover 21, the second adsorbent ( 23) and the second rusty remover 25 in order.
  • the ammonia injector 17 injects ammonia to be mixed with the exhaust gas supplied to the reaction means 15.
  • the mixer 18 mixes the ammonia injected from the ammonia injector 17 with the exhaust gas supplied to the reaction means 15.
  • the exhaust gas supplied to the reaction means 15 is mixed with the ammonia injected from the ammonia injector 17 while passing through the mixer 18.
  • the first adsorbent 19 adsorbs sulfur contained in the exhaust gas mixed with ammonia.
  • the first rusty remover 21 is supplied with exhaust gas from which sulfur has been removed.
  • the first NOx remover 21 removes the NOx contained in the exhaust gas as an SCR (Selective Catalytic Reduction) module. That is, the exhaust gas mixed with ammonia is composed of 4NO + 4NH 3 + NO + NO 2 + 2NH 3 and converted to 4N 2 + 6H 2 O + 2N 2 + 3H 3 O by the SCR module. So the Knox component is removed.
  • SCR Selective Catalytic Reduction
  • the 2nd adsorption agent (23) and the 2nd rusty removal agent (25) install an adsorbent and an anti-rust remover in two stages, and remove the rust component from exhaust gas more reliably.
  • the heater 30 is installed in the reaction tube 40 to be located in front of the reaction means 15.
  • the heater 30 heats the exhaust gas supplied to the reaction means 15 to remove sulfur adsorbed by the first adsorbent 19 and the second adsorbent 23.
  • the control means 35 serves to guide the exhaust gas to the reaction tube 40 so that the exhaust gas is directly discharged to the outside through the exhaust pipe 10 or discharged to the outside via the reaction means 15.
  • the control means 35 includes a bypass damper 37 and a main damper 39.
  • the bypass damper 37 is installed in the exhaust pipe 10 to open and close the exhaust pipe 10. In this case, after the reaction pipe 40 is branched, the bypass damper 37 is installed in the exhaust pipe 10 before the reaction pipe 40 is combined.
  • the main damper 39 is installed at the inlet of the reaction tube 40 to open and close the reaction tube 40. That is, the exhaust gas is installed in the reaction tube 40 before entering the heater 30. When the main damper 39 is closed, the exhaust gas is discharged directly to the outside through the exhaust pipe 10 without passing through the reaction tube 40.
  • the auxiliary supply pipe 45 allows the exhaust gas introduced into the reaction tube 40 to flow between the first rusty remover 21 and the second adsorbent 23 after passing through the heater 30.
  • the auxiliary supply pipe 45 branched from the reaction tube 40 after passing through the heater 30 and before entering the reaction means 15 to react between the first rusty remover 21 and the second adsorbent 23.
  • the auxiliary damper 47 is installed in the auxiliary supply pipe 45 to open and close the auxiliary supply pipe 45. That is, when the auxiliary damper 47 is opened, some of the exhaust gas passing through the heater 30 flows directly into the reaction means 15, and the other part of the exhaust gas passes through the auxiliary supply pipe 45. 21) and the second adsorbent (23). If the auxiliary damper 47 is closed, all the exhaust gas passing through the heater 30 flows directly into the reaction means 15.
  • the exhaust fan 49 is installed in the second reaction tube 43.
  • the outlet main damper 51 is installed in the first reaction tube 41 to open and close the first reaction tube 41
  • the outlet bypass damper 53 is installed in the second reaction tube 43 to the second reaction tube. Open and close the 43.
  • the bypass damper 37 is closed, the main damper 39 is opened, the auxiliary damper 47 and the outlet bypass damper 53 are closed, and the outlet main damper 51 is opened.
  • the exhaust gas flowing into the exhaust pipe 10 flows into the reaction tube 40 and is discharged to the outside via the first reaction tube 41 and the exhaust pipe 10 via the reaction means 15.
  • the exhaust gas flowing into the exhaust pipe 10 has a temperature of approximately 220 to 240 ° C.
  • the heater 30 does not operate, the exhaust gas having a low temperature of 220 to 240 ° C is directly introduced into the reaction means 15.
  • the sulfur poisoning performance of the first adsorbent 19 and the second adsorbent 23 is reduced. In this case, the poisoned sulfur in the first and second adsorbents 19 and 23 should be removed.
  • Part of the exhaust gas heated in the heater 30 directly enters the reaction means 15, enters the first adsorbent 19, and the rest enters the second adsorbent 23. At this time, the ammonia injector 17 does not operate.
  • the hot exhaust gas heated in the heater 30 burns sulfur poisoned in the first adsorbent 19 and the second adsorbent 23 to be desulfurized from the first adsorbent 19 and the second adsorbent 23.
  • the exhaust gas passing through the first adsorbent 19 and the second adsorbent 23 is discharged to the exhaust pipe 10 through the second reaction tube 43.
  • the exhaust gas is discharged directly to the outside. Thus, the exhaust gas is immediately discharged to the outside without passing through the reaction means 15.
  • bypass damper 37 is opened and the main damper 39 is closed.
  • the exhaust gas is then immediately discharged to the outside through the exhaust pipe (10).
  • the exhaust gas is supplied to the reaction means 15 only when it is necessary to reduce the rust.
  • the first adsorbent 19 and the second adsorbent 21 are used, sulfur poisoning occurs in the SCR module. Can be prevented. Thus, the performance degradation of the SCR module can be prevented and the life can be extended.
  • sulfur poisoned by the first and second adsorbents 19 and 21 can be removed by heating the exhaust gas using the heater 30.
  • FIG. 2 is a conceptual diagram of another embodiment of a soot denitrification apparatus according to the present invention.
  • FIG. 2 is an embodiment in which the exhaust gas is reused to increase energy efficiency in the embodiment shown in FIG. 1.
  • the embodiment shown in FIG. 2 further includes a recirculation pipe 55, a recirculation supply damper 57, and a recirculation discharge damper 59 in the embodiment shown in FIG. 1.
  • the remaining components are the same as the embodiment shown in FIG. 1 and will be omitted.
  • the recycle tube 55 is branched from the second reaction tube 43 and connected to the reaction tube 40 before the discharge gas is introduced into the heater 30.
  • the recirculation supply damper 57 is installed in the recirculation pipe 55 to open and close the recirculation pipe 55.
  • the recirculation discharge damper 59 is installed in the second reaction tube 43 after the recirculation tube 55 is branched and before being combined with the first reaction tube 41 to open and close the second reaction tube 43.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Toxicology (AREA)
  • Materials Engineering (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Treating Waste Gases (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

Cette invention concerne un appareil de dénitrification pour fumée, et plus particulièrement, un appareil de dénitrification pour fumée utilisant un système de réduction catalytique sélective (RCS) qui élimine l'empoisonnement au soufre pour réduire les NOx contenus dans un gaz d'échappement à basse température, ledit appareil de dénitrification pour fumée selon l'invention comprenant un tuyau d'échappement et un moyen de réaction. Le moyen de réaction comprend un injecteur d'ammoniac, un mélangeur, un premier adsorbant et un premier agent d'élimination des NOx, et est conçu pour réduire les NOx contenus dans le gaz d'échappement émis par le tuyau d'échappement et pour décharger le gaz d'échappement dans le tuyau d'échappement. L'injecteur d'ammoniac injecte l'ammoniac destiné à être mélangé au gaz d'échappement émis par le tuyau d'échappement et le mélangeur mélange l'ammoniac injecté par l'injecteur d'ammoniac et le gaz d'échappement émis par le tuyau d'échappement. Le premier adsorbant adsorbe le soufre contenu dans le gaz d'échappement après son passage dans le mélangeur. Le premier agent d'élimination des NOx élimine les NOx du gaz d'échappement après son passage par le premier adsorbeur. Selon la présente invention, le premier adsorbant et un second adsorbant sont disposés en partie avant d'un module de réduction catalytique sélective de façon à éliminer le soufre contenu dans le gaz d'échappement à basse température avant son introduction dans le module de réduction catalytique sélective. Selon le présent mode de réalisation, le module de réduction catalytique sélective est protégé contre les dépôts de soufre, maintenant ainsi sa performance et prolongeant la durée de fonctionnement dudit module.
PCT/KR2012/010881 2011-12-19 2012-12-14 Appareil de dénitrification pour fumée WO2013094938A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020110137181A KR101236782B1 (ko) 2011-12-19 2011-12-19 매연탈질장치
KR10-2011-0137181 2011-12-19

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CN103962004A (zh) * 2014-05-06 2014-08-06 江苏淮河化工有限公司 芳香类化合物硝化尾气的处理方法
CN105126617A (zh) * 2015-09-24 2015-12-09 常州市长宇实用气体有限公司 一种可拆卸烟气脱硝装置
CN113669143A (zh) * 2021-09-24 2021-11-19 一汽解放汽车有限公司 一种尾气后处理系统性能检测方法、检测装置及介质

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KR101461338B1 (ko) * 2013-09-09 2014-11-20 두산엔진주식회사 선택적 촉매 환원 시스템
CN105233669B (zh) * 2015-10-19 2019-02-01 上海盛剑环境系统科技股份有限公司 一种烟气脱硝scr系统
CN108097010A (zh) * 2017-12-08 2018-06-01 亿利洁能科技（颍上）有限公司 一种煤炭脱硫脱硝的方法
DE102018127371B4 (de) * 2018-11-02 2021-12-30 Das Environmental Expert Gmbh Vorrichtung und Verfahren zur Nassreinigung eines Gasstromes
KR102080270B1 (ko) 2019-08-07 2020-02-21 정재억 마이크로 버블을 이용한 탈질 설비 및 이를 구비하는 배기가스 처리 시스템
KR102184996B1 (ko) * 2019-10-31 2020-12-01 에이치엘비파워(주) 유체제어 저항을 최소화한 스마트 폐열회수시스템

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