JP7485892B2 - Smoke treatment equipment - Google Patents

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JP7485892B2
JP7485892B2 JP2019228429A JP2019228429A JP7485892B2 JP 7485892 B2 JP7485892 B2 JP 7485892B2 JP 2019228429 A JP2019228429 A JP 2019228429A JP 2019228429 A JP2019228429 A JP 2019228429A JP 7485892 B2 JP7485892 B2 JP 7485892B2
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flue gas
exhaust gas
alkaline solution
nitrogen oxides
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JP2021094534A (en
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智章 伊藤
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ITO RYOKO
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
    • 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
    • B01D53/38—Removing components of undefined structure
    • 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
    • B01D53/50—Sulfur 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/54—Nitrogen 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
    • B01D53/46—Removing components of defined structure
    • B01D53/54—Nitrogen compounds
    • B01D53/56—Nitrogen oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/28—Plant or installations without electricity supply, e.g. using electrets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C9/00—Electrostatic separation not provided for in any single one of the other main groups of this subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/04—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids

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

Description

本発明は、火力発電所で化石燃料を使用した際や、プラスチック系ごみを含む一般ごみ等の廃棄物を炭化処理および油化処理を行った際に生じる排煙を処理する排煙処理装置に関する。 The present invention relates to an exhaust gas treatment device that treats exhaust gas generated when fossil fuels are used at thermal power plants, or when waste such as general waste, including plastic waste, is carbonized and converted into oil.

生ごみやプラスチック系ごみ等の一般ごみ、その他諸々の不要となった廃棄物は、所謂ごみ焼却装置で焼却処理されている。また、有機系ごみに無酸素状態で過熱水蒸気を接触させて炭化処理する方法で処理することも行われている。さらに、火力発電所や工場で化石燃料を使用した場合に、かかる処理に際して生じる排煙には、煤塵、塩化水素、硫黄酸化物、窒素酸化物、ダイオキシン類が含まれており、これらの規制物質については、法令により、その排出濃度や排出総量等が規制されている。かかる規制に対応するため、各種処理方法に基づいた排煙処理装置が提案されている。例えば、煤塵除去装置（特許文献１）や、硫黄酸化物除去装置（特許文献２）や、窒素酸化物除去装置（特許文献３）や、ダイオキシン除去装置（特許文献４）等、各種処理方式に基づいて数多くの排煙処理装置が提案されている。 General waste such as food waste and plastic waste, as well as other unnecessary waste, are incinerated in so-called waste incineration equipment. Organic waste is also treated by contacting it with superheated steam in an oxygen-free state to carbonize it. Furthermore, when fossil fuels are used in thermal power plants and factories, the flue gas generated during such treatment contains soot, hydrogen chloride, sulfur oxides, nitrogen oxides, and dioxins, and the emission concentrations and total amounts of these regulated substances are regulated by law. In order to comply with such regulations, flue gas treatment devices based on various treatment methods have been proposed. For example, a number of flue gas treatment devices based on various treatment methods have been proposed, such as a soot removal device (Patent Document 1), a sulfur oxide removal device (Patent Document 2), a nitrogen oxide removal device (Patent Document 3), and a dioxin removal device (Patent Document 4).

特開２０１１－７２９４６Patent Publication 2011-72946 特開２０１５－７１１７１Patent Publication 2015-71171 特開２０１４－５５５９４Patent Publication No. 2014-55594 特開２００５－８１１９１JP2005-81191

前記提案の各種排煙処理装置は、排煙をきれいにするため、それぞれの規制物質を対象として除去するものであるが、主に火力発電設備や、工場設備で使用される工業炉施設において燃焼手段の駆動により排出される排煙に対して、処理するものであり、その処理方式によってターゲットとする処理対象が相違している。したがって、プラスチック系ごみを含め雑多な一般ごみ等の廃棄物を炭化処理および油化処理を行う際に生じる排煙を処理するに際し、従来の排煙処理装置を採用するには、ごみの種類が多種に混在したままでは、全体として効果的に処理できないものであった。また、特に、臭いの物質となるいわゆる窒素酸化物を完全に取り除くことが困難となっていた。 The various types of flue gas treatment equipment proposed above are designed to remove each regulated substance in order to clean flue gas, but they mainly treat flue gas emitted by driving the combustion means in thermal power generation facilities and industrial furnace facilities used in factory equipment, and the target substances to be treated differ depending on the treatment method. Therefore, when treating flue gas generated during the carbonization and oilification of miscellaneous general waste, including plastic waste, if conventional flue gas treatment equipment was used, it was not possible to effectively treat the entire waste as it was if various types of waste were left mixed together. In particular, it was difficult to completely remove so-called nitrogen oxides, which are odorous substances.

そこで、本発明は、石炭や重油等を燃料として使用している工場等の排煙処理や、特に多種雑多なごみを含む廃棄物の処理に際して、所謂、大気汚染規制各種物質の除去を効果的に行うことができるとともに、一番処理が困難とされていた臭いの処理を完全に行うことができる排煙処理装置を提供することを課題としている。 The present invention aims to provide an exhaust gas treatment device that can effectively remove various substances subject to air pollution control when treating exhaust gas from factories that use coal, heavy oil, etc. as fuel, and in particular when treating waste containing a wide variety of garbage, and can also completely treat odors, which are considered to be the most difficult to treat.

上記課題を解決するために、本発明は次のように構成した。すなわち、本発明に係る排煙処理装置は、煙突から排出される高温の排ガスを導入し、弱アルカリ性溶液でシャワーリングするシャワーリング手段と、シャワーリングされた排ガスの温度を低下させるコンデンサー手段と、コンデンサー手段を通過した排ガスを導入し、貯蔵された強アルカリ性溶液中を通過させる強アルカリ性溶液通過槽手段とを備えた排煙処理装置であって、前記強アルカリ性溶液通過槽手段を通過させた排ガスを導入し、オゾンにより排ガス中に含まれる有害物質を酸化イオン化し、マイナスイオン化させた排ガス中の物質をプラスイオン化されたフィルターを通過させて一括除去する排煙含有物質除去手段を設けたことを特徴としている。 In order to solve the above problems, the present invention is configured as follows. That is, the flue gas treatment device according to the present invention is a flue gas treatment device equipped with showering means for introducing high-temperature flue gas discharged from a chimney and showering it with a weak alkaline solution, condenser means for lowering the temperature of the showered flue gas, and strong alkaline solution passing tank means for introducing the flue gas that has passed through the condenser means and passing it through a stored strong alkaline solution, and is characterized by the provision of flue gas-containing substance removal means for introducing the flue gas that has passed through the strong alkaline solution passing tank means, oxidizing and ionizing harmful substances contained in the flue gas with ozone, and passing the negatively ionized substances in the flue gas through a positively ionized filter to remove them all at once.

この構成の排煙処理装置によれば、先ず、廃棄物の処理装置等の煙突から排出された高温の排ガスは、シャワーリング手段に導入され、弱アルカリ性溶液、例えばアンモニア水によりシャワーリングされて粒子状物質や、硫黄酸化物、窒素酸化物などが取り除かれる。次いで、コンデンサー手段へ導入された排ガスは、潜熱を奪われて外気と同じ温度に低下され、液化され液体として取り除けるものは取り除かれる。コンデンサー手段から排出されたガスは、強アルカリ性溶液通過槽手段に導入され、当該通過槽手段で、強アルカリ性溶液、例えば、水酸化ナトリム中を通過させることで、臭いの物質と硫黄酸化物を分解して窒素酸化物に変化させるとともに、脱色される。 In this flue gas treatment device, the high-temperature exhaust gas discharged from the chimney of a waste treatment device or the like is first introduced into the showering means, where it is showered with a weak alkaline solution, such as ammonia water, to remove particulate matter, sulfur oxides, nitrogen oxides, etc. Next, the exhaust gas introduced into the condenser means loses its latent heat and is lowered to the same temperature as the outside air, and liquefies and any material that can be removed as a liquid is removed. The gas discharged from the condenser means is introduced into the strong alkaline solution passing tank means, where it is passed through a strong alkaline solution, such as sodium hydroxide, to decompose odorous substances and sulfur oxides, converting them into nitrogen oxides and decolorizing them.

次いで、強アルカリ性溶液通過槽手段を通過した排ガスは排煙含有物質除去手段に導入され、排煙含有物質除去手段では、オゾンにより完全に酸化イオン化され、この段階で取り除かれていないマイナスイオン化された窒素酸化物や粒子状物質、臭いの物質が、当該手段内のプラスイオン化されたフィルターで取り除かれ、その後に煙突から大気へ排出される。 Next, the exhaust gas that has passed through the strong alkaline solution passing tank means is introduced into the exhaust gas substance removal means, where it is completely oxidized and ionized by ozone. Any negatively ionized nitrogen oxides, particulate matter, or odorous substances that have not been removed at this stage are removed by a positively ionized filter within the means, and the exhaust gas is then discharged into the atmosphere from the chimney.

本発明に係る排煙処理装置は、廃棄物処理装置や火力発電設備から排出される排ガス中に含まれる煤塵、硫黄酸化物、窒素酸化物等を順次処理して取り除く手段が設けられており、取り分け処理の最終段階で、臭いの物質となる窒素混合物と硫黄酸化物とを分解して窒素酸化物に変化させ、窒素酸化物を一括してマイナスイオン化し、プラスイオン化したフィルターで除去する構成を講じられているので、排煙を規制基準値以下に処理して排出されるとともに、一番処理が困難とされていた臭いの処理を完全に行ったうえで排出することができる。 The flue gas treatment device of the present invention is provided with means for sequentially treating and removing soot, sulfur oxides, nitrogen oxides, etc. contained in the exhaust gas discharged from waste treatment devices and thermal power plants. In particular, in the final stage of treatment, the nitrogen mixture and sulfur oxides, which are odorous substances, are decomposed and converted into nitrogen oxides, and the nitrogen oxides are all converted to negative ions and removed using a filter that converts them to positive ions. This allows the flue gas to be treated to below regulated standards before being discharged, and also allows the odor, which is considered the most difficult to treat, to be completely treated before being discharged.

本発明の一実施形態に係る排煙処理装置の構成を示す図である。1 is a diagram showing a configuration of a smoke exhaust treatment device according to an embodiment of the present invention. 実施例装置により実際に測定した各部における二酸化窒素濃度の変化を示す図表である。1 is a graph showing changes in nitrogen dioxide concentration at various points actually measured using the device of the embodiment; 実施例装置により実際に測定した各部における窒素酸化物濃度の変化を示す図表である。1 is a table showing changes in nitrogen oxide concentration at various points actually measured by the device of the embodiment; 実施例装置により実際に測定した各部における一酸化窒素濃度の変化を示す図表である。1 is a graph showing changes in nitric oxide concentration at various locations actually measured using the device of the embodiment; 実施例装置により実際に測定した各部における二酸化窒素濃度の変化を示す図表である。1 is a graph showing changes in nitrogen dioxide concentration at various points actually measured using the device of the embodiment;

以下、本発明の実施の形態について図面に基づき説明する。 The following describes an embodiment of the present invention with reference to the drawings.

図１は、本発明の一実施形態に係る排煙処理装置の構成を示す図である。この排煙処理装置１は、火力発電設備、一般製造工場、廃棄物処理設備等から排出され排ガスが煙突２から装置内に導入される。この場合の排ガスは、通常３００℃程度の高温である。煙突２からの排ガスは、シャワーリング槽３に導入され、シャワーリング処理を受ける。このシャワーリング処理は、通常の弱アルカリ性溶液、本実施例ではアンモニア水（ＮＨ4ＯＨ）で行われ、シャワーリング槽３内で排ガス中の硫黄酸化物（ＳＯｘ）、粒子状物質（ＰＭ），窒素酸化物（ＮＯｘ）等が先ず取り除かれるようになっている。 Figure 1 is a diagram showing the configuration of an exhaust gas treatment device according to one embodiment of the present invention. In this exhaust gas treatment device 1, exhaust gas discharged from a thermal power plant, a general manufacturing plant, a waste treatment facility, etc. is introduced into the device through a chimney 2. In this case, the exhaust gas is usually at a high temperature of about 300°C. The exhaust gas from the chimney 2 is introduced into a showering tank 3 and subjected to showering treatment. This showering treatment is performed with a normal weak alkaline solution, in this embodiment ammonia water (NH4OH), and sulfur oxides (SOx), particulate matter (PM), nitrogen oxides (NOx), etc. in the exhaust gas are first removed in the showering tank 3.

シャワーリング処理され、上記した規制物質がある程度取り除かれた排ガスは、次にコンデンサー４へ導入される。コンデンサー４は、所謂、復水器であり、導入される排ガスの潜熱を奪って液化するものであり、シャワーリングされた排ガスの温度を約７０℃以下程度に低下させ、ある程度大気と同温になるように温度を低下させる。この処理で、液化して液体となったものは、例えば水溶液として廃液槽５で取り除かれるようになっている。 The exhaust gas that has been showered and from which the above-mentioned regulated substances have been removed to a certain extent is then introduced into the condenser 4. The condenser 4 is a so-called condenser that removes the latent heat of the exhaust gas introduced and liquefies it, lowering the temperature of the showered exhaust gas to approximately 70°C or less, lowering the temperature to a degree that is the same as the atmospheric temperature. The liquid that has been liquefied by this process is removed in the waste liquid tank 5, for example as an aqueous solution.

コンデンサー４を通過した排ガスは、強アルカリ性溶液が貯蔵された強アルカリ性溶液通過槽６に導入される。強アルカリ性溶液には、水酸化ナトリウムや水酸化カリウムが使用されており導入された排ガスを、この強アルカリ性溶液通過槽６の中を通過させることで、排ガス中で最も取り除くことが困難な臭いの物質（窒素混合物）と取り除かれず残存していた硫黄酸化物（ＳＯｘ）を分解して窒素酸化物（ＮＯｘ）に変化させるようになっている。 The exhaust gas that has passed through the condenser 4 is introduced into the strong alkaline solution tank 6, which stores a strong alkaline solution. Sodium hydroxide or potassium hydroxide is used for the strong alkaline solution, and by passing the introduced exhaust gas through this strong alkaline solution tank 6, the odorous substance that is the most difficult to remove in the exhaust gas (nitrogen mixture) and any remaining sulfur oxides (SOx) that have not been removed are decomposed and converted into nitrogen oxides (NOx).

強アルカリ性溶液通過槽６を通過して残存していた硫黄酸化物や窒素混合物が窒素酸化物（ＮＯｘ）に変化させられた排ガスは、排煙含有物質除去槽７に導入される。排煙含有物質除去槽７内には、図示しない導入された排ガス中の窒素酸化物を全て酸化イオン化させるオゾン発生手段と、マイナスイオン化された窒素酸化物（ＮＯｘ）と，粒子状物質（ＰＭ）等を取り除くプラスイオン化されたフィルター手段が設けられている。したがって、排煙含有物質除去槽７に導入された排ガスは、オゾンにより全て酸化イオン化され、マイナスイオン化された排ガス中の窒素酸化物（ＮＯｘ）、硫黄酸化物（ＳＯｘ）、粒子状物質（ＰＭ）等がプラスイオン化されたフィルター手段によってほぼ取り除かれるようになっている。 The exhaust gas, which has passed through the strong alkaline solution passing tank 6 and has had the remaining sulfur oxides and nitrogen mixture converted to nitrogen oxides (NOx), is introduced into the exhaust gas containing substance removal tank 7. Inside the exhaust gas containing substance removal tank 7, there is provided an ozone generating means (not shown) that oxidizes and ions all of the nitrogen oxides in the introduced exhaust gas, and a positive ionized filter means that removes negatively ionized nitrogen oxides (NOx) and particulate matter (PM), etc. Therefore, the exhaust gas introduced into the exhaust gas containing substance removal tank 7 is all oxidized and ionized by ozone, and the nitrogen oxides (NOx), sulfur oxides (SOx), particulate matter (PM), etc. in the negatively ionized exhaust gas are almost entirely removed by the positively ionized filter means.

排煙含有物質除去槽７で処理されて窒素酸化物（ＮＯｘ）、硫黄酸化物（ＳＯｘ）、粒子状物質（ＰＭ）等がほぼ取り除かれた排ガスは、排煙含有物質除去槽７の出口に設置されたダクト８から排出される。 After being treated in the flue gas containing substance removal tank 7 and having most of the nitrogen oxides (NOx), sulfur oxides (SOx), particulate matter (PM), etc. removed, the exhaust gas is discharged from a duct 8 installed at the outlet of the flue gas containing substance removal tank 7.

図２乃至５は、上記のように構成された排煙装処理装置１において、各部における実測した各規制物質の濃度を示す図表である。図２は二酸化硫黄（ＳＯ2）の濃度変化を示し、図３は窒素酸化物の濃度変化、図４は一酸化窒素（ＮＯ）の濃度変化、図５は二酸化窒素（ＮＯ2）の濃度変化を示す。濃度の測定された箇所は、工場等の燃焼炉から煙突２へ導入された導入部（Ａ）、コンデンサー４の出口（Ｂ）、排煙含有物質除去槽７の入口（Ｃ）、排煙含有物質除去槽７の出口（Ｄ）である。 Figures 2 to 5 are charts showing the concentrations of each regulated substance measured at each part of the flue gas treatment device 1 configured as described above. Figure 2 shows the change in concentration of sulfur dioxide (SO2), Figure 3 shows the change in concentration of nitrogen oxides, Figure 4 shows the change in concentration of nitric oxide (NO), and Figure 5 shows the change in concentration of nitrogen dioxide (NO2). The locations where the concentrations were measured were the introduction part (A) where the gas is introduced from the combustion furnace of a factory or the like to the chimney 2, the outlet (B) of the condenser 4, the inlet (C) of the flue gas containing substance removal tank 7, and the outlet (D) of the flue gas containing substance removal tank 7.

Figure 0007485892000001
Figure 0007485892000001

実際に測定されたデータ（表１）に基づいて図２に示すと、二酸化硫黄（ＳＯ2）は、同図中、破線で示す換算濃度の低減に対して、実線で示す実際濃度が、排煙含有物質除去槽７の出口（Ｄ）でほぼ取り除かれていることが示されている。 Figure 2, based on the actual measured data (Table 1), shows that sulfur dioxide (SO2) is almost completely removed at the outlet (D) of the flue gas substance removal tank 7, with the actual concentration shown by the solid line indicating a reduction in the converted concentration shown by the dashed line.

Figure 0007485892000002
Figure 0007485892000002

また、実際に測定されたデータ（表２）に基づいて図３に示すと、窒素酸化物は、同図中、破線で示す換算濃度の上昇、低減に追従しながら、実線で示す実際濃度が、排煙含有物質除去槽７の出口（Ｄ）でほぼ取り除かれていることが示されている。 Figure 3, based on the actual measured data (Table 2), shows that while nitrogen oxides follow the increase and decrease in the converted concentration shown by the dashed line in the figure, the actual concentration shown by the solid line is almost completely removed at the outlet (D) of the flue gas substance removal tank 7.

Figure 0007485892000003
Figure 0007485892000003

また、実際に測定されたデータ（表３）に基づいて図４に示すと、図４に示すように、一酸化窒素（ＮＯ）は、図表中、破線で示す換算濃度の上昇、低減に追従しながら、実線で示す実際濃度が、排煙含有物質除去槽７の出口（Ｄ）でほぼ取り除かれている。したがって、排煙が規制基準値以下に処理して排出されるとともに、一番処理が困難とされていた臭いの処理が完全に行われたことが示されている。 Also, based on the actual measured data (Table 3), as shown in Figure 4, nitric oxide (NO) follows the increase and decrease in the converted concentration shown by the dashed line in the figure, while the actual concentration shown by the solid line is almost completely removed at the outlet (D) of the flue gas contained substance removal tank 7. This shows that the flue gas is treated to below the regulated standard value before being discharged, and the odor, which was considered to be the most difficult to treat, has been completely treated.

Figure 0007485892000004
Figure 0007485892000004

さらに、二酸化窒素（ＮＯ2）は、実際に測定されたデータ（表４）に基づいて図５に示すと、換算濃度、実際濃度とともに、測定箇所（Ａ）から（Ｄ）でほぼ零となっていることが示されている。 Furthermore, for nitrogen dioxide (NO2), Figure 5, based on the actual measured data (Table 4), shows that the converted and actual concentrations are almost zero at measurement points (A) to (D).

１ 排煙処理装置
２ 煙突
３ シャワーリング槽
４ コンデンサー
５ 廃液槽
６ 強アルカリ性溶液通過槽
７ 排煙含有物質除去槽 Reference Signs List 1: Flue gas treatment device 2: Chimney 3: Showering tank 4: Condenser 5: Waste liquid tank 6: Strong alkaline solution passing tank 7: Flue gas substance removal tank

Claims (1)

煙突から排出される高温の排ガスを導入し、弱アルカリ性溶液でシャワーリングするシャワーリング手段と、シャワーリングされた排ガスの温度を低下させるコンデンサー手段と、コンデンサー手段を通過した窒素混合物を含む排ガスを導入し、貯蔵された強アルカリ性溶液中を通過させて、前記窒素混合物を窒素酸化物に変化させて当該排ガスにおける前記窒素酸化物の濃度を増加させる強アルカリ性溶液通過槽手段とを備えた排煙処理装置であって、
前記強アルカリ性溶液通過槽手段を通過させた前記窒素酸化物を含む排ガスを導入し、オゾンにより排ガス中に含まれる前記窒素酸化物を含む有害物質を酸化イオン化し、マイナスイオン化させた排ガス中の物質をプラスイオン化されたフィルターを通過させて一括除去する排煙含有物質除去手段を設けたことを特徴とする排煙処理装置。 A flue gas treatment device comprising: showering means for introducing high-temperature flue gas discharged from a chimney and showering it with a weak alkaline solution; condensing means for lowering the temperature of the showered flue gas; and strong alkaline solution passing tank means for introducing flue gas containing a nitrogen mixture that has passed through the condensing means and passing it through a stored strong alkaline solution to change the nitrogen mixture into nitrogen oxides and increase the concentration of the nitrogen oxides in the flue gas ,
This flue gas treatment device is characterized by being provided with a flue gas containing substance removal means which introduces the exhaust gas containing nitrogen oxides that has been passed through the strong alkaline solution passing tank means, oxidizes and ionizes the harmful substances containing the nitrogen oxides contained in the exhaust gas using ozone, and passes the negatively ionized substances in the exhaust gas through a positively ionized filter to remove them all at once.
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