WO2014008702A1 - Procédé pour le traitement de gaz résiduaire contenant des nox et système correspondant - Google Patents

Procédé pour le traitement de gaz résiduaire contenant des nox et système correspondant Download PDF

Info

Publication number
WO2014008702A1
WO2014008702A1 PCT/CN2012/080083 CN2012080083W WO2014008702A1 WO 2014008702 A1 WO2014008702 A1 WO 2014008702A1 CN 2012080083 W CN2012080083 W CN 2012080083W WO 2014008702 A1 WO2014008702 A1 WO 2014008702A1
Authority
WO
WIPO (PCT)
Prior art keywords
nox
ammonia
leachate
molar ratio
exhaust gas
Prior art date
Application number
PCT/CN2012/080083
Other languages
English (en)
Chinese (zh)
Inventor
杭鹏志
Original Assignee
Hang Pengzhi
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hang Pengzhi filed Critical Hang Pengzhi
Publication of WO2014008702A1 publication Critical patent/WO2014008702A1/fr

Links

Classifications

    • 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
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen compounds
    • B01D2257/402—Dinitrogen oxide
    • 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)

Definitions

  • the present invention relates to a NOx-containing exhaust gas treatment method in a low temperature section (5 - 15 CTC) and a system using the same, and in particular to an ECR denitration group ammonium nitrate method and a system therefor. Background technique
  • Nitrogen oxides (5% N0 2 and 95% NO) are gases produced by the oxidation of nitrogen during the combustion process. They not only stimulate the human respiratory system, damage animals and plants, destroy the ozone layer, but also One of the main substances causing greenhouse effect, acid rain and photochemical reactions. The demand for NOx emission limits has become stricter around the world, and thermal power plants, waste incineration plants and cement plants are the most important sources of NOx emissions, and their emission reductions have received special attention.
  • SCR is mainly used in large-scale coal-fired boilers.
  • the denitration efficiency can reach 70-90%. It has the advantages of small floor space, high denitration efficiency and no secondary pollution.
  • Humidity, dust, and temperature are high, and their investment and operating costs are relatively high.
  • the SCR is mainly in the middle temperature section (2 30-45 0 °C).
  • the reduction of N0 X to N 2 (nitrogen) and H 2 0 (water) by adding a reducing agent NH 3 (ammonia) completes the denitration.
  • the mechanism is as follows:
  • SNCR is mainly used for NOx emission control of medium and small boilers such as waste incineration plants.
  • the utility model has the advantages of small occupied area, small system investment, simple system and convenient operation, but the denitration efficiency is 25-5 0%, which belongs to the high temperature out-of-sale process, and is only applicable to the process requirements of the transformation of the old unit or the low denitration efficiency.
  • SNCR is mainly in the high temperature section (760-1060 ° C) by adding ⁇ 3 (ammonia) or
  • Leachate is a kind of liquid with high concentration of organic or inorganic components produced by biochemical degradation such as compaction and fermentation during the process of stacking and landfilling. Because it contains malodorous gases, it must be deodorized.
  • Conventional deodorization processes mainly use biofilters, but biofilters have poor deodorization efficiency, large floor space, high construction and operation costs, and complicated operation.
  • the denitration process route realizes low-temperature denitration in the tail gas of power plants, cement kiln, glass kiln, thermal power plant, coal-fired boiler, cement kiln, glass kiln, etc., and directly obtains ammonium salt and deodorizes, which has very realistic environmental protection and economic significance.
  • the technical problem to be solved by the present invention is to provide a NOx-containing exhaust gas and NH 3 (ammonia) in the presence of leachate as a compounding agent at a low temperature (5-150 ° C), using ECRR (electrochemical recovery reactor).
  • ECRR electrochemical recovery reactor
  • the leachate preferably contains an alcohol, an aldehyde or an organic acid as a complexing agent, and the alcohol is preferably methyl mercaptan, dimethyl alcohol, ethanethiol or the like.
  • the main components of the leachate of the present invention are CH 4 S (methyl mercaptan), (CH 3 ) 2 S (dimethyl alcohol), C 2 H 5 HS (ethanethiol), CH 3 (CH 2 ) 2 CH0 (n-butyraldehyde), (CH 3 ) 2 CHCH0 (isobutyraldehyde), CH 3 CH 2 CH 2 C00H (butyric acid), C 4 H 9 C00H (pentanoic acid), NH 3 (ammonia) and RX (other or The remainder of the mixture.
  • the present invention uses the following technical solutions:
  • NOx in the NOx exhaust gas is oxidized to N0 2 , N 2 0 5 , HN0 2 by strong oxidizing active radicals at a temperature of 5 -1 50 ° C, and finally HN0 3 is generated by multiple reactions.
  • N 2 0 5 + H 2 0 ⁇ 2 draws 3 .
  • the strong oxidizing active radical may be a high-energy electron, a plasma, and a 0H-active oxidizing substance generated by a DC high-voltage narrow-pulse discharge field formed by a plasma discharge device.
  • plasma discharges such as blocking dielectric discharge, glow discharge, and corona discharge.
  • glow discharge is widely used in the lighting tube industry because it is suitable for low-voltage environment. It also has certain applications for blocking dielectric discharge, but because of its own structural reasons, once it is absolutely If the media of the edge is clogged or contaminated, it will easily cause the medium to creep, resulting in short circuit of the discharge circuit, and the equipment is unstable.
  • Corona discharge has DC and AC discharge types, but for many reasons, only 10KV-15KV discharge power supply has been developed. Achieving stable narrow pulse discharge limits industrial applications; and AC discharge, because of its high voltage, has a certain amount of radiation, because it has great safety hazards and cannot be popularized.
  • the plasma discharge device in the present invention is an ECRR discharge device (electrochemical recovery reactor), the input voltage is a standard AC voltage (220V or 380V), the discharge frequency is 900 times/second, and the output pulse power is greater than 5 MW, preferably DC. The pulse power is 5-6 MW, and the discharge is stable.
  • ECRR discharge device electrochemical recovery reactor
  • the input voltage is a standard AC voltage (220V or 380V)
  • the discharge frequency is 900 times/second
  • the output pulse power is greater than 5 MW, preferably DC.
  • the pulse power is 5-6 MW, and the discharge is stable.
  • the ECRR discharge device can generate strong oxidizing active radicals, for example, high energy electrons, ultraviolet light, high temperature vacuoles, and 0H, 0 3 , 0, N.
  • the NOx-containing exhaust gas is continuously introduced for reaction in an ECRR (electrochemical recovery reactor) (DC pulse power 5-6 MW, discharge frequency 900 times/second) at a temperature of 5-15 CTC. .
  • ECRR electrochemical recovery reactor
  • the method of the present invention continuously introducing NOx-containing exhaust gas and NH 3 at an ECRR (electrochemical recovery reactor) (DC pulse power 5-6 MW, discharge frequency 900 times/second) at a temperature of 5-15 CTC .
  • the molar ratio between the introduction of the NOx-containing exhaust gas and NH 3 (ammonia) is from 0.8 to 1, more preferably from 0.8 to 0.9.
  • High-energy electrons, ultraviolet light, high-temperature cavities and strong oxidizing active radicals such as 0H, 0 3 , 0, N, etc. in the ECRR discharge field can be used to treat NOx (5% N0 2 and 95% NO) in the exhaust gas.
  • the strong oxidizing active radical denitrates the NOx in the NOx-containing exhaust gas and further reacts with NH 3 to form ammonium nitrate.
  • the NOx-containing exhaust gas is introduced into the ECRR (electrochemical recovery reactor) simultaneously with ammonia (low-concentration ammonia water) and leachate, and the strong oxidizing active radical is firstly NOx-containing.
  • DeNOx in the exhaust gas is then reacted with NH 3 histamine to form ammonium nitrate.
  • the leachate preferably contains an alcohol, an aldehyde, or an organic acid as a complexing agent, and the alcohol is preferably methyl mercaptan, dimethyl alcohol, ethyl mercaptan or the like.
  • the leachate used in accordance with one embodiment of the present invention the main components of which are CH 4 S (methyl mercaptan), (CH 3 ) 2 S (dimethyl alcohol), C 2 H 5 HS (B Mercaptan)), CH 3 (CH 2 ) 2 CH0 (n-butyraldehyde), (CH 3 ) 2 CHCH0 (isobutyraldehyde), CH 3 CH 2 CH 2 C00H (butyric acid), C 4 H 9 C00H (pentyl) Acid), NH 3 (ammonia).
  • the leachate can unexpectedly improve the salt formation efficiency of ammonium nitrate, increase the rate of ammonium nitrate formation and the action of free radicals, and crack into carbon dioxide and water, thereby realizing denitration of NOx-containing waste gas and nitric acid.
  • the ammonium group salt and leachate deodorization are carried out in one process, and the reaction mechanism is as follows:
  • continuous introduction is carried out in an ECRR (Electrochemical Recovery Reactor) (DC20-50KV, 500-1000 times/S electrochemical recovery reactor) at a temperature of 5-150 °C.
  • the NOx exhaust gas, NH 3 (ammonia), leachate as a compounding agent is added according to the ratio of NOx and ammonia detected in the reactor, and preferably, the ratio of NOx to ammonia and the total amount of ammonia contained in the leachate is 0.8. -1, the ratio is preferably from 0.8 to 0.9.
  • leachate accelerates the synthesis amount and synthesis rate of ammonium nitrate, and generates NH 4 N0 3 (ammonium nitrate) which can be used for chemical and agricultural production in a very short time; the compounding agent is preferably an alcohol gas.
  • the leachate itself acts as an organic macromolecule and is also cleaved by strong oxidative active radicals produced by ECRR (electrochemical recovery reactor) after group salt to C0 2 (carbon dioxide) and H 2 0 (water).
  • the molar ratio of NOx to ammonia is preferably selected from 0.8 to 0.9. If the amount of ammonia in the leachate is sufficient, it is not necessary to add ammonia, because too much ammonia will regenerate N0x.
  • the method of the present invention may further comprise the step of temperature-reducing ammonium nitrate in water. According to the difference in solubility of nitrate in water at different temperatures, the precipitation of crystallization of ammonium nitrate is increased to realize the recovery and utilization of ammonium nitrate.
  • Ammonium salt capture devices are known in the art.
  • the invention provides an ECR denitration group ammonium nitrate salt system according to the above method, the system comprising: an electrochemical recovery reactor, an ammonium salt trapping device, a control device; and a pulse power output by the electrochemical recovery reactor More than 5 MW, and continuous discharge is stable; the ammonium salt trapping device is in fluid connection with the electrochemical recovery reactor; the control device is in communication with the electrochemical recovery reactor and the ammonium salt trapping device.
  • the control device is coupled to the electrochemical recovery reactor, the ammonium salt trap, and the circulation pump, respectively, to control the entire process system.
  • a further preferred embodiment of the present invention resides in: further comprising a circulating pump in fluid connection with the ammonium salt capture device for alternately controlling temperature, said control device being in communication with the circulation pump.
  • the circulation pump is in fluid connection with the ammonium salt trap, and can alternately control the temperature to control the solubility of the ammonium salt in water to realize the recovery and capture of ammonium nitrate.
  • the NOx removal efficiency is high, up to 80%;
  • the leachate deodorization efficiency is high, reaching more than 90%
  • the ammonium nitrate group has high salt efficiency of over 85%;
  • the system has no additives and will not cause secondary pollution
  • FIG. 2 is a structural schematic diagram of a process flow chart of an ammonium nitrate salt of the ECR denitration group of the present invention.
  • the NOx-containing exhaust gas and leachate and NH 3 are introduced into the electrochemical recovery reactor 001 to complete the denitration, group salt, and deodorization processes, and then enter the ammonium salt trap 002 to recover the ammonium nitrate formed by the reaction.
  • the structural diagram of the present invention mainly comprises an electrochemical recovery reactor 001, an ammonium salt trap 002, a control unit 003, and a circulation pump 004.
  • Electrochemical recovery reactor 001 is a combination of standard AC voltage (22 0V or 38 0V), which is rapidly superimposed by electromagnetic energy and AC/DC modules and control systems, and outputs more than 5MW of pulse power. Electrochemical recovery reactor 001 has a consistently stable discharge demand.
  • the electrochemical recovery reactor 001 is a large amount of strong oxidizing active particles such as ⁇ 0 ⁇ , ⁇ 0, 0 3 , ⁇ , strong ultraviolet rays, high temperature vacuoles, especially under the action of high-energy electrons generated by the ECRR discharge field. Oxidation and chemical reactivity of 0 ⁇ , ⁇ 0, can be used for the instantaneous oxidation of organic matter in exhaust gas, NO oxidation in NOx to N0 2 , HN0 2 , ⁇ 2 0 5 and introduction of leachate and ⁇ 3 with HN0 2 , HN0 3 Denitrification, group salt, and deodorization processes.
  • 001 ECRR electrochemical recovery reactor
  • the base fully converts NO to N0 2 , N 2 0 5 , HN0 2 , and finally generates HN0 3 (nitric acid) by multiple reactions.
  • the leachate is introduced and reacted with NH 3 and nitric acid to form ammonium nitrate.
  • alcohols such as methyl mercaptan, dimethyl alcohol and ethanethiol and n-butyraldehyde, isobutyraldehyde, butyric acid and valeric acid Wait
  • the rate of formation and production of ammonium nitrate is increased, and then, after strong oxidation, the organic macromolecular molecules of the alcohol gas as a complexing agent are cleaved into carbon dioxide and water.
  • the NOx gas and the NH 3 are used as a complexing agent with the alcohol, the aldehyde, and the organic acid gas in the leachate, thereby achieving the three functions of denitration, ammonium nitrate salt, and deodorization.
  • the ammonium salt of the electrochemical recovery reactor 001 is captured by the ammonium salt trap 002.
  • the circulation pump 004 is used to achieve temperature alternation, thereby affecting the solubility of ammonium nitrate, and the ammonium nitrate is precipitated by precipitation of ammonium nitrate.
  • control unit 003 The entire process system is controlled by control unit 003.
  • the ratio is between 0.8-0.9.
  • the NOx outlet concentration is 110mg/m 3
  • the NOx removal efficiency is 78%
  • the salt salt efficiency is over 65%.
  • the ammonium salt trap uses a secondary cooling recovery system to recover 197.9 kg of ammonium nitrate particles per day.
  • the NOx outlet concentration is 70mg/m 3 and the NOx removal efficiency is 86%.
  • the rate is over 85% and the deodorization efficiency is over 93.2%.
  • the exhaust gas with a volume of 10,000 m 3 /h, a NOx inlet concentration of 500 mg/m 3 and a temperature of 60 ° C is introduced; a certain amount of leachate overflow gas is injected, and the components thereof mainly include: CH 4 S (methyl mercaptan) 19 mg/m ⁇ (CH 3 ) 2 S (dimethyl alcohol) 27 mg/m 3 , C 2 H 5 HS (ethanethiol) 27 mg/m 3 , CH 3 (CH 2 ) 2 CH0 (n-butyraldehyde) 21 mg/m 3 , (CH 3 ) 2 CHCH0 (isobutyraldehyde) 27 mg/m 3 , CH 3 CH 2 CH 2 C00H (butyric acid) 40 mg/m 3 , C 4 H 9 C00H (pentanoic acid) 5 mg/m 3 , NH 3 (ammonia gas) 230 mg/m 3 , and introduce 170 mg/m 3 of NH 3
  • the NOx outlet concentration is 71mg/m 3
  • the NOx removal efficiency is 85.8%
  • the salt salt efficiency is over 85.2%.
  • the deodorization efficiency is over 93.2%.
  • the molar ratio is between 0.8 and 0.9.
  • the NOx outlet concentration is 109mg/m 3
  • the NOx removal efficiency is 78.2%
  • the salt salt efficiency is over 65.2%.
  • the deodorization efficiency is over 93.2%.
  • the NOx outlet concentration is 72mg/m 3
  • the NOx removal efficiency is 85.6%
  • the salt salt efficiency is above 84.7%.
  • the deodorization efficiency is over 92.4%.
  • the air volume introduced in the ECRR is 10000 m 3 /h, the NOx inlet concentration is 500 mg/m 3 , and the temperature Exhaust gas at 150 °C; inject a certain amount of leachate overflow gas, the main components are: CH 4 S (methyl mercaptan) 19 mg / m ⁇ ( CH 3 ) 2 S (dimethyl alcohol) 27 mg / m 3 , C 2 H 5 HS (ethanethiol)) 27 mg/m 3 , CH 3 (CH 2 ) 2 CH0 (n-butyraldehyde) 21 mg/m 3 , (CH 3 ) 2 CHCH0 (isobutyraldehyde) 27 mg/ m 3 , CH 3 CH 2 CH 2 C00H (butyric acid) 40 mg/m 3 , C 4 H 9 C00H (pentanoic acid) 5 mg/m 3 , NH 3 (ammonia gas) 230 mg/m 3 , simultaneously introduced into 170 mg / m
  • the NOx outlet concentration is 71 mg/m 3 , the NOx removal efficiency is 85.8%, and the salt-to-salt efficiency is 85.
  • the NOx outlet concentration is 71 mg/m 3 and the NOx removal efficiency is 85.8%.
  • an exhaust gas with an air volume of 10000 m 3 /h, a NOx inlet concentration of 500 mg/m 3 and a temperature of 60 °C in the ECRR; introduce 400 mg/m 3 of NH 3 (ammonia gas) to ensure NOx and NH 3 (ammonia gas) 2 ⁇ Molar ratio between 0. 8-1.
  • the NOx outlet concentration is 108 mg/m 3
  • the NOx removal efficiency is 78. 4%
  • the salt-to-salt efficiency is 65.
  • the NOx outlet concentration is 108 mg/m 3 and the NOx removal efficiency is 78. 4%. 1% or more.
  • the pulsating power is 5-6 MW and the discharge frequency is 900 times/second
  • the NOx outlet concentration is 73 mg/m 3
  • the NOx removal efficiency is 85.4%
  • the salt efficiencies are 84. 5% ⁇ More than 5%, the deodorization efficiency of 93.2% or more.
  • the NOx outlet concentration is 227 mg/m 3
  • the NOx removal efficiency is 45.4%
  • the salt efficiencies are up to 84.
  • the NOx outlet concentration is 227 mg/m 3 and the NOx removal efficiency is 45. 4%. More than 5%, the deodorization efficiency is more than 92.8%.
  • the NOx outlet concentration is 225 mg/m 3
  • the NOx removal efficiency is 45%
  • the salt salt efficiency is 84.
  • the NOx outlet concentration is 225 mg/m 3
  • the NOx removal efficiency is 45%
  • the NOx emission efficiency is 45%.
  • the deodorization efficiency is more than 92.8%.
  • the NOx outlet concentration is 228 mg/m 3
  • the NOx removal efficiency is 45.6%
  • the salt efficiencies are up to 84.
  • the NOx outlet concentration is 228 mg/m 3
  • the NOx removal efficiency is 45.6%
  • the NOx removal efficiency is 84. More than 7%, the deodorization efficiency is over 92.7%.
  • An exhaust gas having an air volume of 10,000 m 3 /h, a NOx inlet concentration of 500 mg/m 3 and a temperature of 150 ° C was introduced into the ECRR.
  • the pulsing power is 5-6 MW, and the discharge frequency is 900 times/second.
  • the NOx outlet concentration is 110 mg/m 3
  • the NOx removal efficiency is 78%
  • 70% of the nitric acid is produced. /d (kg/day).
  • the temperature in the present invention has little effect on the denitration and deodorization efficiency, but has a certain influence on the recovered ammonium nitrate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treating Waste Gases (AREA)

Abstract

L'invention porte sur un procédé pour le traitement de gaz résiduaire contenant des NOx et sur un système correspondant. Le procédé comprend : à une température de 5-150°C, l'utilisation de radicaux libres ayant une activité d'oxydation puissante pour oxyder le gaz résiduaire contenant des NOx en NO2, N2O5 et HNO2, qui subissent ensuite une réaction d'amination avec de l'ammoniac gazeux pour produire du nitrate d'ammonium. Du lixiviat peut être introduit en tant qu'agent de composition, pour augmenter l'efficacité de la salification du nitrate d'ammonium et augmenter la vitesse et le rendement de production du nitrate d'ammonium et, en même temps, les macromolécules organiques présentes dans le lixiviat se décomposent sous l'effet des radicaux libres ayant une puissante activité d'oxydation. Le système appliqué pour le procédé comprend un réacteur de recyclage électrochimique (001), un dispositif de piégeage de sels d'ammonium (002) et un dispositif de commande (003).
PCT/CN2012/080083 2012-07-09 2012-08-14 Procédé pour le traitement de gaz résiduaire contenant des nox et système correspondant WO2014008702A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2012102368292A CN102716647A (zh) 2012-07-09 2012-07-09 含NOx废气处理方法及其系统
CN201210236829.2 2012-07-09

Publications (1)

Publication Number Publication Date
WO2014008702A1 true WO2014008702A1 (fr) 2014-01-16

Family

ID=46942592

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/080083 WO2014008702A1 (fr) 2012-07-09 2012-08-14 Procédé pour le traitement de gaz résiduaire contenant des nox et système correspondant

Country Status (2)

Country Link
CN (1) CN102716647A (fr)
WO (1) WO2014008702A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103706226A (zh) * 2013-12-31 2014-04-09 中国科学院高能物理研究所 烟气污染物处理装置
CN104258699B (zh) * 2014-09-16 2016-03-30 昆明理工大学 等离子体与气固或气液分散系协同净化污染物的方法
CN106989407A (zh) * 2016-01-20 2017-07-28 杭州中兵环保股份有限公司 一种烟气中NOx消除装置及方法
CN105749713A (zh) * 2016-04-14 2016-07-13 史荐瑜 一种含硫氧化物和氮氧化物烟气脱硫脱硝方法
CN107158900B (zh) * 2017-06-26 2020-05-26 南京工程学院 一种固体碳材料及以此为还原剂电化学脱硝的方法
CN112337259A (zh) * 2020-10-19 2021-02-09 周大福珠宝文化产业园(武汉)有限公司 废气处理系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006036311A2 (fr) * 2004-09-23 2006-04-06 General Motors Corporation Reduction des nox aidee par un plasma
CN101337151A (zh) * 2008-08-12 2009-01-07 昆明理工大学 利用低温等离子体脱除固定源尾气中氮氧化物的净化方法
CN101773780A (zh) * 2010-03-23 2010-07-14 昆明理工大学 等离子体协同低温催化氧化no脱除氮氧化物的方法
CN202666670U (zh) * 2012-07-09 2013-01-16 上海万强科技开发有限公司 含NOx废气处理系统

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006036311A2 (fr) * 2004-09-23 2006-04-06 General Motors Corporation Reduction des nox aidee par un plasma
CN101337151A (zh) * 2008-08-12 2009-01-07 昆明理工大学 利用低温等离子体脱除固定源尾气中氮氧化物的净化方法
CN101773780A (zh) * 2010-03-23 2010-07-14 昆明理工大学 等离子体协同低温催化氧化no脱除氮氧化物的方法
CN202666670U (zh) * 2012-07-09 2013-01-16 上海万强科技开发有限公司 含NOx废气处理系统

Also Published As

Publication number Publication date
CN102716647A (zh) 2012-10-10

Similar Documents

Publication Publication Date Title
CN102489149B (zh) 废气净化处理方法
CN102343212B (zh) 臭氧和过氧化氢协同氧化结合湿法吸收的脱硝工艺
WO2014008702A1 (fr) Procédé pour le traitement de gaz résiduaire contenant des nox et système correspondant
CN106853327B (zh) 一种低温烟气脱硫脱硝一体化的方法及装置
CN107281915B (zh) 一种氧化铝焙烧烟气的sncr和scr组合脱硝系统及脱硝方法
CN105771600A (zh) 草木灰浆液对尾气中多污染物一体化脱除的方法及装置
CN105032142A (zh) 类气相预氧化结合吸收的烟气一体化脱除系统及方法
WO2022156549A1 (fr) Procédé et système pour la préparation d'urée par couplage d'une dénitration avec une réduction électrocatalytique
CN102716651A (zh) 脱硫脱硝一体化烟气净化处理系统及其净化处理工艺
CN105536467A (zh) 一种光催化氧化结合双循环吸收的烟气净化装置及方法
CN203625223U (zh) 一种应用于瓶罐玻璃窑炉的烟气综合治理装置
CN105289228A (zh) 一种工业烟气协同脱硫脱硝方法
CN203123795U (zh) 臭氧氧化法烟气脱硝装置
CN205308112U (zh) 臭氧与空气协同氧化烟气中氮氧化物的装置
CN102847430B (zh) 一种烟气净化系统及其净化工艺
CN205073858U (zh) 一种还原与氧化联合脱硝系统
CN101927126B (zh) 利用文丘里氧化器非催化直接氧化处理含氮氧化物气体的方法
CN205386400U (zh) 臭氧氧化联合裂解激发烟气脱硫脱硝一体化装置
CN102961954B (zh) 一种水泥窑炉烟气NOx减排装置
CN111644029A (zh) 一种湿法脱硫后低温脱硝除尘脱白工艺装置
CN204093282U (zh) 一种利用臭氧作用脱除氮氧化物的处理装置
CN111111401A (zh) 一种工业废气中氮氧化物的无害化高效处理方法
CN203408631U (zh) 一种用于含nox废气的选择性催化还原脱硝装置
CN216604721U (zh) 一种工业废气的脱硫脱硝控制系统
CN105289263A (zh) 一种双氧水脱硝工艺及脱硝系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12880775

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12880775

Country of ref document: EP

Kind code of ref document: A1