KR19990049357A - Incinerator Exhaust Purifier - Google Patents
Incinerator Exhaust Purifier Download PDFInfo
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- KR19990049357A KR19990049357A KR1019970068285A KR19970068285A KR19990049357A KR 19990049357 A KR19990049357 A KR 19990049357A KR 1019970068285 A KR1019970068285 A KR 1019970068285A KR 19970068285 A KR19970068285 A KR 19970068285A KR 19990049357 A KR19990049357 A KR 19990049357A
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- exhaust gas
- burner
- incinerator
- exhaust
- catalytic reaction
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- 239000007789 gas Substances 0.000 claims abstract description 56
- 239000003054 catalyst Substances 0.000 claims abstract description 24
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000001301 oxygen Substances 0.000 claims abstract description 11
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 11
- 230000009467 reduction Effects 0.000 claims abstract description 10
- 150000002013 dioxins Chemical class 0.000 claims abstract description 9
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 9
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000003647 oxidation Effects 0.000 claims abstract description 8
- 230000001590 oxidative effect Effects 0.000 claims abstract description 6
- 239000000428 dust Substances 0.000 claims description 18
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 12
- 238000000746 purification Methods 0.000 claims description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 229910021536 Zeolite Inorganic materials 0.000 claims description 2
- 230000002378 acidificating effect Effects 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 229910052763 palladium Inorganic materials 0.000 claims description 2
- 239000010970 precious metal Substances 0.000 claims description 2
- 239000010457 zeolite Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 229910052703 rhodium Inorganic materials 0.000 claims 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 12
- 239000002699 waste material Substances 0.000 abstract description 7
- 239000002341 toxic gas Substances 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 11
- 238000006722 reduction reaction Methods 0.000 description 8
- 239000000126 substance Substances 0.000 description 5
- 238000011282 treatment Methods 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000000809 air pollutant Substances 0.000 description 2
- 231100001243 air pollutant Toxicity 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000009841 combustion method Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000011946 reduction process Methods 0.000 description 2
- PHMNXPYGVPEQSJ-UHFFFAOYSA-N Dimethoxane Chemical compound CC1CC(OC(C)=O)OC(C)O1 PHMNXPYGVPEQSJ-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- -1 and especially Chemical compound 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011221 initial treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step 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
- B01D53/005—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 heat treatment
-
- 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
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- 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
- B01D53/8628—Processes characterised by a specific catalyst
-
- 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
- B01D53/8659—Removing halogens or halogen compounds
- B01D53/8662—Organic halogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/42—Platinum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/44—Palladium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/46—Ruthenium, rhodium, osmium or iridium
- B01J23/464—Rhodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/024—Multiple impregnation or coating
- B01J37/0246—Coatings comprising a zeolite
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Biomedical Technology (AREA)
- Health & Medical Sciences (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chimneys And Flues (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Incineration Of Waste (AREA)
- Treating Waste Gases (AREA)
Abstract
본 발명은 폐기물을 처리할 때 발생되는 배기가스 중 다이옥신 및 질소산화물을 제거하는 정화장치에 관한 것으로, 소각로 및 각종 산업용 기기로부터 배관된 배기유입관(10)을 통해 유입되는 배기가스를 가열시켜 산소를 저감시키는 버너(30)와;The present invention relates to a purifier for removing dioxins and nitrogen oxides in the exhaust gas generated when treating waste, and heats the exhaust gas introduced through the exhaust inlet pipe (10) piped from an incinerator and various industrial equipment. Burner 30 to reduce the;
상기 버너(30)의 출구측에 배관되어, 이 버너(30)에 의해 산소가 1차로 감소된 배기가스를 환원촉매수단(50)으로 NOX를 N2와 H2O로 환원시키고, 산화촉매수단(60)에 의해 각각 다이옥신을 CO2,H2O, HCl로 산화처리시키는 촉매반응조(70)와;Wherein the pipe on the outlet side of the burner 30, and the reduction of NO X by the burner 30, the catalyst unit 50, oxygen is first reduced to the reduced emissions primarily by a N 2 and H 2 O, oxidation catalyst A catalytic reaction tank 70 for oxidizing dioxins with CO 2, H 2 O and HCl by means 60;
이 촉매반응조(70) 내부에서 배기가스에 포함된 NOX를 환원시키고 다이옥신을 산화처리하여 팬(81)의 송풍력으로 대기로 방출토록 하는 배기굴뚝(80)으로 구성되는 것에 의해, 유해가스인 질소산화물과 다이옥신을 무해한 가스로 성질을 변화시켜 배출시킴으로써 공해를 방지할 수 있는 발명이다.By being composed of the catalytic reaction vessel 70, the exhaust chimney 80 which ever released to the atmosphere by sending wind of the fan 81, by reducing the NO X and oxidizing the dioxins contained in the exhaust gas inside, a noxious gas It is an invention that can prevent pollution by discharging nitrogen oxide and dioxin into harmless gas by changing its properties.
Description
본 발명은 소각로, 보일러, 엔진 등에서 배출되는 배기가스를 정화시키는 장치로, 보다 상세하게는 소각로에서 배출되는 유해가스인 질소산화물을 N2,O2로 환원시키고 다이옥신을 CO2,H2O, HCl로 산화시켜 유해가스를 제거하는 장치에 관한 것이다.The present invention is a device for purifying the exhaust gas discharged from incinerators, boilers, engines, etc. More specifically, the nitrogen oxide which is a harmful gas discharged from the incinerator is reduced to N 2, O 2 and dioxin CO 2, H 2 O, The present invention relates to a device for removing harmful gas by oxidizing with HCl.
일반적으로 소각로, 보일러, 발전용 및 선박용 엔진을 포함한 각종 산업기기에서는 배기가스가 방출된다.In general, exhaust gases are emitted from various industrial equipment including incinerators, boilers, power generation and marine engines.
이 배기가스 중에는 NOX와 같은 유해물질이 포함되어 있으며 특히, 폐기물을 소각하는 과정에서 발생하는 배기가스 중에는 HCl, NOX,다이옥신, 먼지 등의 대기오염 물질이 포함되어 있으므로 이를 효과적으로 제거시키는 대기오염방지설비의 설치가 필수적이다.The exhaust gas contains harmful substances such as NO X. In particular, the exhaust gas generated during the incineration of waste contains air pollutants such as HCl, NO X, dioxins, and dust, which effectively removes air pollution. Installation of prevention equipment is essential.
종래 배기가스 정화장치에는 2차 연소에 의한 연소방법과 활성탄에 흡착여과하는 방법이 있다.Conventional exhaust gas purifying apparatuses include a combustion method by secondary combustion and an adsorption filtration method on activated carbon.
그러나, 상기한 종래 2차 연소에 의한 방법과 활성탄 흡착여과방법은 유해물질의 배출량을 줄일 수는 있으나 NOX와 다이옥신의 유해성분을 근본적으로 분해하지 못하고, 특히, 다이옥신은 화학반응을 일으켜 무해한 물질로 변환시키는 방법이 아니라 여과방법에 의한 흡착방법을 사용하게 되어 흡착된 물질이 폐기물로 발생됨으로 2차 환경오염물질로 배출되어 환경을 오염시키는 원인이 되는 문제점이 있다.However, the conventional secondary combustion method and the activated carbon adsorption filtration method can reduce the emission of harmful substances, but do not fundamentally decompose harmful components of NO X and dioxin, and especially, dioxin causes a chemical reaction and is harmless. Since the adsorption method by the filtration method is used instead of the conversion method, there is a problem that the adsorbed material is generated as a waste and is discharged as a secondary environmental pollutant to pollute the environment.
최근에 NOX를 저감시키기 위해서 선택적인 촉매 환원(Selective Catalytic Reduction)설비가 일부 설치되고 있으나 유독물질인 암모니아를 환원제로 사용함에 따른 위험부담이 있으며 운전상 문제점이 있다.Recently, some selective catalytic reduction facilities have been installed to reduce NO x , but there are risks associated with the use of toxic ammonia as a reducing agent, and there are operational problems.
본 발명의 목적은 NOX와 다이옥신과 같은 유해물질을 암모니아와 같은 유독물질을 환원제로 사용하지 않으면서 촉매에 의해 환원 및 산화에 의한 화학반응으로 무해한 물질로 변환시켜 대기로 방출시킴으로써 환경오염을 미연에 방지하도록 된 소각로 배기가스 정화장치를 제공하는 데 있다.It is an object of the present invention to convert harmful substances such as NO x and dioxins into harmless substances by chemical reaction by reduction and oxidation by a catalyst without using toxic substances such as ammonia as reducing agents and release them into the atmosphere. It is to provide an incinerator exhaust gas purification device that is to be prevented.
도 1은 본 발명의 장치도이다.1 is an apparatus diagram of the present invention.
도면의 주요 부분에 대한 부호의 설명;Description of symbols for the main parts of the drawings;
10 - 배기유입관 11 - 가스세정기10-Exhaust inlet 11-Gas cleaner
12 - 먼지제거수단 30 - 버너12-Dust removal means 30-Burners
40 - 열교환기 20, 21 - 콘트롤러40-heat exchanger 20, 21-controller
70 - 촉매반응조 50 - 환원촉매수단70-Catalytic reactor 50-Reduction catalyst means
60 - 산화촉매수단 80 - 배기굴뚝60-oxidation catalyst means 80-exhaust chimney
이러한 본 발명은 소각로 및 각종 산업용 기기로부터 배관되는 배기유입관(10)을 통해 유입되는 배기가스를 가열시켜 산소를 저감시키는 버너(30)와;The present invention includes a burner 30 for reducing oxygen by heating the exhaust gas introduced through the exhaust inlet pipe 10 piped from the incinerator and various industrial equipment;
상기 버너(30)의 출구측에 배관되어, 이 버너(30)에 의해 산소가 1차로 감소된 배기가스를 환원촉매수단(50)으로 NOX를 N2와 H2O로 환원시키고, 산화촉매수단(60)에 의해 각각 다이옥신을 CO2,H2O, HCl로 산화처리시키는 촉매반응조(70)와;Wherein the pipe on the outlet side of the burner 30, and the reduction of NO X by the burner 30, the catalyst unit 50, oxygen is first reduced to the reduced emissions primarily by a N 2 and H 2 O, oxidation catalyst A catalytic reaction tank 70 for oxidizing dioxins with CO 2, H 2 O and HCl by means 60;
이 촉매반응조(70) 내부에서 배기가스에 포함된 NOX를 환원시키고 다이옥신을 산화처리하여 팬(81)의 송풍력으로 대기로 방출토록 하는 배기굴뚝(80)으로 구성되는 것에 의해 달성된다.Is achieved by a catalyst consisting of the reaction tank 70 is sent an exhaust chimney 80 for emission into the atmosphere ever wind of reducing the NO X contained in exhaust gas from an internal oxidation treatment and the dioxin fan 81.
따라서, 유해한 NOX가 환원촉매반응에 의하여 근본적인 성질 변화로 무해한 N2와 H2O로 변화되고, 독가스인 다이옥신이 CO2,H2O, HCl로 변화되어 공해오염 방지효과가 우수하게 되는 것이다.Therefore, the harmful NO X is changed to N 2 and H 2 O which are harmless due to the fundamental property change by the reduction catalyst reaction, and the dioxin, which is a poison gas, is changed to CO 2, H 2 O, HCl, thereby preventing pollution pollution. .
이하 첨부된 도면에 의거하여 본 발명을 보다 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
제 1도는 본 발명의 장치를 도시한 것으로, 도시하지 않은 폐기물 처리장치에서 부터 배출되는 유해 배기가스를 정화하기 위한 버너(30)와 촉매반응조(70)를 거쳐 산화 및 환원처리된 순수 무해가스가 배출굴뚝(80)을 통해 배출되는 장치를 도시하고 있다.Figure 1 shows the apparatus of the present invention, the pure harmless gas oxidized and reduced through a burner 30 and a catalytic reaction tank 70 for purifying the harmful exhaust gas discharged from a waste treatment apparatus not shown. The device discharged through the discharge chimney 80 is shown.
한편, 본 발명의 배기가스 정화과정에서 유입되는 배기가스를 바로 버너(30)와 촉매반응조(70)에서 정화시켜도 무방하나, 보다 그 정화효과를 증대시키기 위해 먼지제거수단(12)을 거치도록 장치하는 것이 좋다.On the other hand, the exhaust gas flowing in the exhaust gas purification process of the present invention may be immediately purified by the burner 30 and the catalytic reaction tank 70, the apparatus to pass through the dust removal means 12 to further increase the purification effect Good to do.
즉, 종래에는 도면에서 생략된 폐기처리장치에서 폐기물을 소각기(1) 등의 방법으로 처리할 때 배출되는 가스를 1차 처리하기 위해 습식보일러에서 습식가열한 후 필터 등을 거쳐 그대로 대기로 방출되므로, 이 배기가스에 포함된 질소산화물과 다이옥신 및 기타 이물질들이 포함배기가스를 정화시키기 위해 본 발명의 장치로 배기유입관(10)을 통해 거쳐서 배기굴뚝(80)으로 배출시키는 것이다.That is, in the prior art, in the waste treatment apparatus omitted in the drawing, when the waste is treated by the method of the incinerator 1 or the like, the wet gas is first heated in a wet boiler to be discharged to the atmosphere through a filter or the like as it is discharged as it is. In addition, nitrogen oxide and dioxins and other foreign substances contained in the exhaust gas are discharged to the exhaust chimney 80 through the exhaust inlet pipe 10 with the apparatus of the present invention to purify the exhaust gas.
이때, 소각기로 부터 바로 배출되는 배기가스중에는 먼지와 같은 입자상태의 불순물(이하 먼지라 칭함)이 많이 포함되어 있으므로 본 발명의 정화장치에서의 정화효율을 높이기 위해 소각로에서 방출되는 배기가스가 배기유입관(10)을 통해 가스세정기(11)와 먼지제거수단(12)을 순차적으로 거치게 하는 것이 효과적이다.At this time, since the exhaust gas discharged directly from the incinerator contains a lot of particulate impurities such as dust (hereinafter referred to as dust), the exhaust gas discharged from the incinerator in order to increase the purification efficiency in the purification apparatus of the present invention is introduced into the exhaust gas. It is effective to pass the gas cleaner 11 and the dust removing means 12 sequentially through the pipe (10).
상기 가스세정기(11)는 시약과 냉각수가 공급되어 내부에 비산되는 먼지(ASH)를 침강시켜 출구에 형성된 콘베이어(13)를 타고 처리조로 이송시키게 된다.The gas cleaner 11 is supplied with reagents and cooling water to settle the dust (ASH) scattered therein, and transports the conveyor 13 formed at the outlet to the treatment tank.
따라서, 가스세정기(11)는 에서는 폐기물 소각로에서 발생하는 대기오염물질 중 산성성분인 염산, 황산성분과 일부 먼지를 제거하게 된다.Therefore, the gas cleaner 11 removes acidic hydrochloric acid, sulfuric acid, and some dust from air pollutants generated in the waste incinerator.
그리고, 이후 먼지제거수단(12)에서 먼지를 완전제거하게 된다.Then, the dust is removed from the dust removing means 12 completely.
이 먼지제거수단(12)은 백필터, 전기집진기, 싸이클론 등을 이용한 집진부재로 만들어져, 이들중 어느 하나의 구성으로 된 먼지제거수단(12)를 통과한 순수 가스만이 본 발명의 정화장치에서 정화되도록 1차 처리하게 되는 것이고, 먼지제거수단(12)에 모여진 먼지(ASH)는 출구에 형성된 콘베이어(13)를 타고 가스세정기(11)에서 처리된 먼지와 함께 처리조로 이송시키게 된다.The dust removing means 12 is made of a dust collecting member using a bag filter, an electrostatic precipitator, a cyclone, and the like, and only the pure gas passing through the dust removing means 12 having any one of them is the purifying device of the present invention. In order to be purified from the primary treatment, the dust (ASH) collected in the dust removing means 12 is transported to the treatment tank together with the dust treated in the gas cleaner 11 in the conveyor 13 formed at the outlet.
이와같이 1차단계에서 여과된 배기가스는 본 발명의 버너(30)에서 연소시키는 2단계 공정을 거치게 된다.As such, the exhaust gas filtered in the first stage is subjected to a two-stage process of burning in the burner 30 of the present invention.
버너(30)의 연료로는 디젤유, 천연가스, 프로판가스 등을 선택적으로 소각시키게 되며, 연료의 사용량은 배기가스 중 산소농도에 따라 결정되는데, 배기가스 중 산소농도가 적을수록 연료비가 적어 경제적으로 유리한 점이 있다.As the fuel of the burner 30, diesel oil, natural gas, propane gas, etc. are selectively incinerated, and the amount of fuel used is determined by the oxygen concentration in the exhaust gas. The lower the oxygen concentration in the exhaust gas, the lower the fuel cost. There is an advantage.
배기가스를 연소하게 되면, 배기가스 중 2∼4% 정도 포함되어 있는 산소의 농도가 최대한 감소되며 가연성 가스인 CO2,H2가 적정하게 생성되며 NOX는 약 50% 저감된다.When the exhaust gas is combusted, the concentration of oxygen contained in about 2 to 4% of the exhaust gas is reduced as much as possible, and combustible gases CO 2 and H 2 are appropriately generated and NO X is reduced by about 50%.
이의 화학반응은 다음과 같다.Its chemical reaction is as follows.
NO + H2→ N2+ H2ONO + H 2 → N 2 + H 2 O
NO + CO → N2+ CO2 NO + CO → N 2 + CO 2
상기와 같은 반응식에서와 같이 버너(30)에 의한 연소환원공정을 거친 약 1000℃정도의 고온의 배기가스는 열교환기(40)를 거쳐 약 350∼450oC로 냉각된다.As in the reaction scheme as described above, the exhaust gas having a high temperature of about 1000 ° C. after the combustion reduction process by the burner 30 is cooled to about 350 to 450 ° C. through the heat exchanger 40.
이때 약 10.5Kg/cm2압력의 스팀이 생산되는데 이 스팀은 온방. 냉방, 발전, 기타 등의 용도로 활용될 수 있다.At this time, about 10.5kg / cm 2 of steam is produced, which is warm. It can be used for cooling, power generation, etc.
냉각된 배기가스는 촉매반응조(70)로 보내져 제 3 단계인 환원촉매수단(50)을 갖는 즉 촉매반응조(70)로 보내진다.The cooled exhaust gas is sent to the catalytic reaction tank 70 and is sent to the catalytic reaction tank 70 having the reduction catalyst means 50 which is the third step.
환원촉매수단(50)은 Pt/Rh 또는 순수한 Rh 등이 주로 사용되며 잔류하는 NOX는 이 단계에서 거의 N2,CO2,H2O 등으로 전환된다.Reduction catalyst means 50 is mainly used Pt / Rh or pure Rh and the remaining NO X is almost converted to N 2, CO 2, H 2 O and the like in this step.
이의 화학반응은 다음과 같다.Its chemical reaction is as follows.
NO + 1/2O2→ NO2 NO + 1 / 2O 2 → NO 2
NO + 2H2→ 2H2O + 1/2N2 NO + 2H 2 → 2H 2 O + 1 / 2N 2
NO + 2CO → 2CO2+ 1/2N2 NO + 2CO → 2CO 2 + 1 / 2N 2
위의 화학반응에 따르면 NO가 NO2로 산화되기 위해서는 적정량의 산소가 필요하게 되는데 이 때 필요한 산소는 공기 송풍기를 이용한 산소주입으로 해결하게 된다.According to the above chemical reaction, in order for NO to be oxidized to NO 2 , an appropriate amount of oxygen is required, and the necessary oxygen is solved by oxygen injection using an air blower.
환원공정을 거친 배기가스는 송풍기로 부터 배관을 통해 유입되는 공기와 혼합되며 이 때의 온도는 약 390±50oC를 유지하도록 한다.The exhaust gas after the reduction process is mixed with the air flowing through the pipe from the blower, and the temperature is maintained at about 390 ± 50 o C.
배기가스는 상기 온도에서 제 4 단계인 산화촉매수단(60)에 유입되며 촉매표면에서 잔여 CO는 CO2로 산화되고, 다이옥신은 촉매표면에서 산화되어 CO2및 극소량의 HCl로 분해되어 팬(81)의 송풍력으로 배기굴뚝(80)으로 유도되어 대기로 배출된다.The exhaust gas is flowing into the oxidation catalyst device 60 Step 4 by the temperature and oxidized to the residual CO is CO 2 at the catalyst surface, dioxin, is oxidized at the catalyst surface is decomposed into CO 2 and a very small amount of HCl fan (81 By the blowing force of) is guided to the exhaust chimney 80 is discharged to the atmosphere.
이 배기배출관(80)-STACK-은 대기를 향해 무해처리된 배기가스의 배출이 이루어지도록 한다.The exhaust discharge pipe 80-STACK allows the exhaust gas to be treated harmlessly toward the atmosphere.
한편, 상기 촉매반응조(70)는 환원촉매수단(50)과 다이옥신을 CO2,H2O, HCl로 산화시키는 산화촉매수단(60)의 표면에서의 반응을 높이기 위한 촉매표면적 확보 및 이에 따른 압력손실 극소화, 운전조작 및 유지 편리성 등을 고려하여 고안하게 되는데 촉매부재는 벌집형 담체(Honeycomb Substrate)에 제오라이트를 워시코팅하고, 귀금속인 Pt, Pd, Rd 등을 코팅하여 촉매의 활성이 이루어짐과 아울러 비표면적을 극대화시키도록 구성된다.On the other hand, the catalytic reaction tank (70) is to secure the catalyst surface area and thereby the pressure to increase the reaction on the surface of the reduction catalyst means 50 and the oxidation catalyst means 60 for oxidizing dioxins to CO 2, H 2 O, HCl It is designed in consideration of minimizing loss, operation and maintenance convenience.The catalyst member is wash coated with a zeolite on a honeycomb substrate and coated with precious metals such as Pt, Pd, and Rd to activate the catalyst. In addition, it is configured to maximize the specific surface area.
또한, 상기 촉매반응조(70)의 전, 후에는 콘트롤러(20)(21)가 설치되어 촉매반응 전, 후의 배기가스의 압력과 유량 및 온도 등을 검출하고 게이지로 표시하고, 제어회로에 의해 자동제어가 이루어 지도록 한다.In addition, controllers 20 and 21 are installed before and after the catalytic reaction tank 70 to detect the pressure, flow rate and temperature of the exhaust gas before and after the catalytic reaction, and display it with a gauge. Allow control to take place.
본 발명에 따른 소각로 배기가스 정화장치는 유해한 NOX가 환원촉매반응에 의하여 근본적인 성질 변화로 무해한 N2와 H2O로 변화되고, 독가스인 다이옥신이 CO2,H2O, HCl로 변화되어 공해오염을 크게 방지할 수 있다는데 그 우수성이 있다.Incinerator exhaust gas purifier according to the present invention is harmful NO x is changed to harmless N 2 and H 2 O due to a fundamental property change by a reduction catalyst reaction, toxic gas dioxin is changed to CO 2, H 2 O, HCl pollution It is excellent in that it can prevent pollution greatly.
Claims (6)
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| CN113289451A (en) * | 2021-05-27 | 2021-08-24 | 中弘环境工程（北京）有限公司 | Treatment and waste heat utilization system and treatment and waste heat utilization method for tail gas of carbon-carbon composite material preparation process |
| CN117781294A (en) * | 2023-12-28 | 2024-03-29 | 青岛锐丰源化工有限公司 | Fine chemical industry factory flue gas treatment method |
| CN117781294B (en) * | 2023-12-28 | 2024-06-07 | 青岛锐丰源化工有限公司 | Fine chemical industry factory flue gas treatment method |
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| CN106268118A (en) * | 2015-05-26 | 2017-01-04 | 陆崎 | A kind of exhaust treatment system |
| CN105797529B (en) * | 2016-05-23 | 2019-03-08 | 成都弗吉亚科技有限公司 | A kind of fire coal boiler fume three-stage processing method |
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| CN117781294A (en) * | 2023-12-28 | 2024-03-29 | 青岛锐丰源化工有限公司 | Fine chemical industry factory flue gas treatment method |
| CN117781294B (en) * | 2023-12-28 | 2024-06-07 | 青岛锐丰源化工有限公司 | Fine chemical industry factory flue gas treatment method |
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