KR20000064082A - 2-Staged Swirl Atomizer for Oil Burner - Google Patents
2-Staged Swirl Atomizer for Oil Burner Download PDFInfo
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- KR20000064082A KR20000064082A KR1020000048212A KR20000048212A KR20000064082A KR 20000064082 A KR20000064082 A KR 20000064082A KR 1020000048212 A KR1020000048212 A KR 1020000048212A KR 20000048212 A KR20000048212 A KR 20000048212A KR 20000064082 A KR20000064082 A KR 20000064082A
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- flame
- nozzle
- fuel
- injection hole
- internal
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- 239000000446 fuel Substances 0.000 claims abstract description 60
- 238000002347 injection Methods 0.000 claims abstract description 42
- 239000007924 injection Substances 0.000 claims abstract description 42
- 238000002156 mixing Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims description 11
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 81
- 239000007788 liquid Substances 0.000 abstract description 9
- 238000007796 conventional method Methods 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 21
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000003916 acid precipitation Methods 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 229910052815 sulfur oxide Inorganic materials 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/36—Details, e.g. burner cooling means, noise reduction means
- F23D11/38—Nozzles; Cleaning devices therefor
- F23D11/383—Nozzles; Cleaning devices therefor with swirl means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/10—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour
- F23D11/12—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour characterised by the shape or arrangement of the outlets from the nozzle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/10—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour
- F23D11/18—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour the gaseous medium being water vapour generated at the nozzle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2202/00—Liquid fuel burners
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Nozzles For Spraying Of Liquid Fuel (AREA)
Abstract
본 발명은 액체연료를 연소할 때 발생하는 질소산화물의 저감을 위한 압력분사식 노즐에 관한 것으로서, 상세히는 하나의 연료 분사공(4)과 와류실(5)을 갖고 있으면서 단일 화염을 형성하는 종래의 압력분사식 노즐(1)과는 달리, 내부연료 분사공(80)과 외부연료 분사공(90)으로 구성된 주혼합 노즐(10)과 보조 노즐(100)로 구성하되, 각각의 상기 분사공(80)(90)은 서로 다른 두개의 와류실(60,110)에 공급된 연료를 서로 다른 각도로 분사시켜 미립화 함으로써, 화염을 내부와 외부의 2중 화염 구조로 형성시켜 질소산화물을 적게 발생시킬 수 있도록 구성한 2단 와류 압력분사식 노즐에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure jet nozzle for reducing nitrogen oxides generated when burning liquid fuel. In detail, the present invention relates to a conventional method of forming a single flame while having one fuel injection hole (4) and a swirl chamber (5). Unlike the pressure injection nozzle (1), it consists of the main mixing nozzle 10 and the auxiliary nozzle 100 composed of the internal fuel injection hole 80 and the external fuel injection hole 90, each of the injection holes (80) 90 is atomized by injecting the fuel supplied to two different vortex chambers 60 and 110 at different angles to form a flame in a double flame structure inside and outside, thereby generating less nitrogen oxides. A two-stage vortex pressure jet nozzle.
Description
본 발명은 유류버너에 사용되는 압력분사식 노즐에 관한 것으로서, 상세히는 액체연료의 연소에서 발생되는 공해 물질의 일종인 질소산화물을 저감하기 위해, 내부연료 분사공과 외부연료 분사공으로 서로 다른 두개의 와류실로 구분된 분사공들에 공급되는 연료를 서로 다른 각도로 분사시킴으로써, 화염을 내부와 외부의 2중 화염 구조로 형성시켜 질소산화물을 적게 발생시킬 수 있도록 구성한 2단 와류 압력분사식 노즐에 관한 것이다.The present invention relates to a pressure injection nozzle used in an oil burner, and more particularly, to reduce nitrogen oxide, which is a kind of pollutant generated in the combustion of liquid fuel, into two different vortex chambers as internal fuel injection holes and external fuel injection holes. The present invention relates to a two-stage vortex pressure jet nozzle configured to inject a fuel supplied to the divided injection holes at different angles, thereby forming a flame in a double flame structure inside and outside to generate less nitrogen oxides.
현재 산업용 및 발전용으로 사용되는 종래의 유류버너는 도 4a와 4b 및 4c에 도시한 바와 같이, 후단의 연료 주입구(3)에 연료가 주입되어 상기 연료 주입구(3)와 연결된 연료 공급공(2)을 통해 연료가 와류실(5) 내에서 와류되면서 연료 분사공(5)으로 분출되어 하나의 화염을 형성하는 1단 와류 압력분사식 노즐(1)을 이용하고 있다.Conventional oil burners currently used for industrial and power generation, as shown in Figure 4a, 4b and 4c, fuel is injected into the fuel inlet (3) at the rear end of the fuel supply hole (2) connected to the fuel inlet (2) A single stage vortex pressure injection nozzle (1) is used in which the fuel is vortexed in the vortex chamber (5) and ejected to the fuel injection hole (5) to form a flame.
그런데 상기한 종래 유류버너에 있어서, 연소 후 발생되는 각종 공해물질(질소산화물, 황산화물, 분진 등)에 대한 규제가 한층 강화되고 있다. 특히, 질소산화물은 인체의 호흡기 계통 및 식물 성장에 직접적인 영향을 주고 있는 물질로써, 광산화물과 같은 2차 오염물질을 생성하고 있으며, 산성비의 원인을 제공하여 생태계에 영향을 미치고 있고, 광흡수로 인한 스모그(Smog) 현상을 유발하고 있다.However, in the above-described conventional oil burner, regulations on various pollutants (nitrogen oxides, sulfur oxides, dusts, etc.) generated after combustion are tightened. In particular, nitrogen oxides are substances that directly affect the respiratory system and plant growth of the human body. They produce secondary pollutants such as photooxides, and provide the cause of acid rain, affecting the ecosystem. It causes the smog phenomenon.
따라서, 최근의 유류버너의 성능 평가는 질소산화물의 배출량을 얼마만큼 감소시킬 수 있느냐에 초점이 맞추어져 있으며, 본 발명에서는 이러한 질소산화물을 획기적으로 감소시키기 위해 2중 화염 구조를 갖는 새로운 개념의 질소산화물 저감 노즐을 발명한 것이다.Therefore, recent performance evaluation of oil burners focuses on how much nitrogen oxide emissions can be reduced, and in the present invention, a new concept of nitrogen having a double flame structure in order to drastically reduce such nitrogen oxides is present. An oxide reduction nozzle is invented.
즉, 유류 연소에 의한 질소산화물 생성은 대부분 연소용 공기 중에 포함되어 있는 질소가 고온의 연소분위기에서 과잉산소와 반응하면서 생성되는 '열적 질소산화물'이며, 연료 중에 포함되어 있는 질소 성분에 의한 질소산화물 생성도 고려되고 있으나, 이는 연료의 질소함유량에 따라 그 영향이 달라진다.In other words, the generation of nitrogen oxides by oil combustion is a 'thermal nitrogen oxide' produced by the reaction of nitrogen contained in combustion air with excess oxygen in a high-temperature combustion atmosphere, and nitrogen oxides by nitrogen components contained in fuel. Generation is also considered, but its effect depends on the nitrogen content of the fuel.
그런데, 종래에 사용되고 있는 유류버너의 질소산화물 저감기술은 연소용 공기 중에 함유된 질소가 고온의 연소 분위기에서 과잉산소와 반응하여 생성되는 열적 질소산화물을 감소하기 위하여, 별도의 장치를 이용하여 연소용 공기에 연소가스를 혼합시켜 저온의 연소 분위기를 만들어 주는 방법을 사용하고 있다. 또한, 버너영역에서 연료와 공기의 적절한 혼합제어에 의한 질소산화물 저감 방법도 사용되고 있다.However, the nitrogen oxide reduction technology of the oil burner that is conventionally used for combustion by using a separate device in order to reduce the thermal nitrogen oxides generated by the reaction of the nitrogen contained in the combustion air with excess oxygen in a high temperature combustion atmosphere. It uses a method of mixing combustion gas with air to create a low temperature combustion atmosphere. In addition, a method of reducing nitrogen oxides by appropriate mixing control of fuel and air in the burner area is also used.
보다 구체적으로, 현재 사용되고 있는 유류버너의 질소산화물을 저감시키기 위한 연소기술에는 크게, 연소된 배기가스의 일부를 버너로 유입시켜 연소용 공기와 혼합한 후 연소하는 방법인 배기가스 재순환법, 버너에서 연소용 공기와 연료의 혼합특성을 제어함으로써 질소산화물의 생성을 억제시키는 방법, 그리고 연료 분사 및 노즐 구조에 따라 분할화염을 형성시키는 방법 및 바이어스 연소(농담연소:濃淡燃燒) 방법이 있다.More specifically, the combustion technology for reducing the nitrogen oxides of the oil burners currently used is largely in the exhaust gas recirculation method and the burner, which is a method in which a part of the burned exhaust gas is introduced into the burner and mixed with the combustion air, and then burned. There are a method of suppressing the production of nitrogen oxides by controlling the mixing characteristics of combustion air and fuel, a method of forming a split flame according to the fuel injection and the nozzle structure, and a bias combustion method.
그러나, 배기가스 순환법과 연소용 공기의 혼합 특성을 통한 질소산화물 저감 방법은 버너의 전체적인 구조와 관련된 사항으로 연료 분사용 노즐에 비해 저감 효과는 상당히 높으나, 재보수 및 교환에 있어서 경제적인 부담이 증가되는 단점이 있는 반면, 연료 분사용 노즐을 통한 질소산화물 저감은 종래 버너에도 용이하게 적용할 수 있는 특성을 갖는다.However, the method of reducing nitrogen oxides through the mixture of exhaust gas circulation method and combustion air is related to the overall structure of the burner, and the reduction effect is considerably higher than that of the fuel injection nozzle, but the economic burden on the repair and replacement increases. On the other hand, the nitrogen oxide reduction through the fuel injection nozzle has a property that can be easily applied to a conventional burner.
본 발명은 상기한 바와 같은 종래 유류버너의 사용에 의해 발생되는 질소산화물의 저감을 도모하기 위해 안출된 것으로서, 액체연료 연소용 버너에서 배출되는 질소산화물을 획기적으로 감소시켜 최소화하기 위해, 노즐에 의해 형성되는 화염이 '내부 화염'과 '외부 화염'으로 분리되어 2중 화염 구조를 갖는 새로운 개념의 질소산화물 저감 노즐을 제공함에 그 목적이 있다.The present invention has been made to reduce the nitrogen oxides generated by the use of a conventional oil burner as described above, by a nozzle to significantly reduce and minimize the nitrogen oxides discharged from the liquid fuel burner. The purpose of the present invention is to provide a new concept of NO x reduction nozzle having a double flame structure by separating the flames formed into 'inner flame' and 'outer flame'.
도 1a는 본 발명에 따른 2단 와류 압력분사식 노즐 중 주혼합 노즐의 정면도,1A is a front view of the main mixing nozzle of the two-stage vortex pressure jet nozzle according to the present invention;
도 1b는 상기 도 1의 개략 단면도,1B is a schematic cross-sectional view of FIG. 1;
도 1c는 상기 도 1의 배면도,Figure 1c is a rear view of the Figure 1,
도 2a는 도 1의 주혼합 노즐과 조립되는 보조 노즐의 정면도,2A is a front view of an auxiliary nozzle assembled with the main mixing nozzle of FIG. 1,
도 2b는 상기 도 1의 개략 단면도,2b is a schematic cross-sectional view of FIG.
도 2c는 상기 도 1의 배면도,Figure 2c is a rear view of the Figure 1,
도 3a는 주혼합 노즐과 보조 노즐이 조립된 2단 와류 압력분사식 노즐의 개략 단면도,3A is a schematic cross-sectional view of a two-stage vortex pressure jet nozzle in which a main mixing nozzle and an auxiliary nozzle are assembled;
도 3b는 본 발명에 따른 상기 도 3a의 노즐에 의한 화염의 형상도,Figure 3b is a shape of the flame by the nozzle of Figure 3a according to the present invention,
도 4a는 종래 유류버너용 압력분사식 노즐의 정면도,Figure 4a is a front view of a pressure injection nozzle for a conventional oil burner,
도 4b는 상기 도 4의 개략 단면도,4B is a schematic cross-sectional view of FIG. 4;
도 4c는 상기 도 4의 배면도,Figure 4c is a rear view of the Figure 4,
(도면 부호의 설명)(Explanation of reference numerals)
10...주혼합 노즐, 20...보조 증기 유입공,10 main mixing nozzle, 20 auxiliary steam inlet,
30...내부 화염용 연료공급구, 40...내부 화염용 주연료 주입구,30.Inner flame fuel inlet, 40 ... Inner flame inlet,
50...외부 화염용 주연료 주입구, 60...내부 와류실,50 fuel injection port for external flame, 60 internal vortex chamber,
70...외부 화염용 연료공입공, 80...내부 분사공,70 fuel injection holes for external flames, 80 internal injection holes,
90...외부 분사공, 100...보조 노즐,90 ... outer hole, 100 ... secondary nozzle,
110...외부 와류실, (가)...외부 화염 형상,110 external vortex chamber, (a) external flame shape,
(나)...내부 화염 형상, A,A'...돌출부.(B) Internal flame shape, A, A '... projections.
상기한 바와 같은 목적을 달성하기 위해, 본 발명은 연료를 아주 작은 액적(液滴)으로 미립화 하여 연료의 표면적을 증대시킴으로써, 액체연료의 기화를 촉진시킴과 동시에, 공기와의 원활한 혼합을 통하여 연소효율을 좋게 하는 유류버너용 연료분사 노즐로 구성한다. 특히, 본 발명과 직접 연계되는 압력분사식 노즐은 상기한 바와 같이 액체연료를 고압으로 분사시켜 미립화하고, 미립화 효율이 더욱 상승될 수 있도록 분사되는 액체에 와류(선회유동)를 가하여 액막 형태로 분사될 수 있는 구조로 되어 있다.In order to achieve the above object, the present invention atomizes the fuel into very small droplets to increase the surface area of the fuel, thereby promoting vaporization of the liquid fuel and simultaneously burning the fuel through smooth mixing with air. It consists of a fuel injection nozzle for oil burners which improves efficiency. In particular, the pressure injection nozzle directly connected with the present invention is atomized by injecting the liquid fuel at high pressure as described above, and is sprayed in the form of a liquid film by applying a vortex (orbiting flow) to the injected liquid so that the atomization efficiency can be further increased. It is structured to be able to do it.
아울러, 본 발명은 상기 액체연료의 미립화에 의한 연소효율의 증대뿐만 아니라, 연료가 연소할 때 발생하는 공해물질인 질소산화물을 보다 효과적으로 저감시키기 위한 것으로서, 노즐의 구조만을 변경시켜 2중 화염을 형성시킴으로써 질소산화물 저감이 가능하게 된다.In addition, the present invention is not only to increase the combustion efficiency by atomizing the liquid fuel, but also to reduce the nitrogen oxide which is a pollutant generated when the fuel burns more effectively, by changing only the structure of the nozzle to form a double flame By doing so, nitrogen oxide reduction can be achieved.
이하, 첨부된 도면을 참조하여 본 발명에 따른 유류버너용 2단 와류 압력분사식 노즐에 대한 구성을 상세히 설명한다.Hereinafter, a configuration of a two-stage vortex pressure jet nozzle for an oil burner according to the present invention will be described in detail with reference to the accompanying drawings.
도 1a는 본 발명에 따른 2단 와류 압력분사식 노즐 중 주혼합 노즐의 정면도, 도 1b는 상기 도 1의 개략 단면도, 도 1c는 상기 도 1의 배면도, 도 2a는 도 1의 주혼합 노즐과 조립되는 보조 노즐의 정면도, 도 2b는 상기 도 1의 개략 단면도, 도 2c는 상기 도 1의 배면도를 도시한 것으로서,1A is a front view of a main mixing nozzle of a two-stage vortex pressure jet nozzle according to the present invention, FIG. 1B is a schematic cross-sectional view of FIG. 1, FIG. 1C is a rear view of FIG. 1, and FIG. 2A is a main mixing nozzle of FIG. 1. 2b is a schematic cross-sectional view of FIG. 1, and FIG. 2c is a rear view of FIG.
도 1a와 1b 및 1c에 도시한 바와 같이,As shown in Figs. 1A and 1B and 1C,
중심으로 원추형의 공간을 내부에 형성한 돌출부(A)가 돌출되면서 원추형 공간의 상부는 내부 분사공(80), 상기 원추형 공간의 하부는 내부와류실(60)로 형성하고, 이 내부와류실(60)의 바깥쪽 둘레 면을 따라 정면에는 외부화염용 연료공입공(70)을, 배면에는 내부화염용 연료공급구(30)를 일정 간격을 두고 천공하되, 내부와류실(60)의 바깥쪽 상부에 외부화염용 주연료 주입구(50)가 형성되어 상기 외부화염용 연료공입공(70)으로 비스듬히 연결되고, 내부와류실(60)의 바깥쪽 하부에 내부화염용 주연료 주입구(40)가 형성되어 상기 내부화염용 연료공급구(30)으로 비스듬히 연결되며, 상기 외부화염용 연료공입공(70)과 내부화염용 연료공급구(30)의 바깥쪽 둘레면에 따라 일정 간격을 두고 보조증기 유입공(20)이 천공된 원반형의 주혼합 노즐과;A protrusion A having a conical space formed therein as a center protrudes, and an upper part of the conical space is formed by an internal injection hole 80, and a lower part of the conical space is formed by an internal vortex chamber 60. Along the outer circumferential surface of the 60) to the front of the fuel injection hole (70) for the external flame, the back of the fuel supply port (30) for the internal flame at a predetermined interval, but the outside of the inner vortex chamber (60) The main fuel injection hole 50 for the external flame is formed on the upper side is obliquely connected to the fuel injection hole 70 for the external flame, the main fuel injection hole 40 for the internal flame in the outer lower portion of the inner vortex chamber 60 is It is formed and connected obliquely to the internal flame fuel supply port 30, the auxiliary steam at a predetermined interval along the outer circumferential surface of the external flame fuel injection hole 70 and the internal flame fuel supply port (30) A disk-shaped main mixing nozzle in which the inlet hole 20 is drilled;
도 2a 와 2b 및 2c에 도시한 바와 같이,As shown in Figs. 2A and 2B and 2C,
중심으로 상단의 일부가 수직으로 꺾인 원추형의 공간을 내부에 형성한 돌출부(A')가 돌출되면서 상기 원추형의 공간이 외부 와류실(110)로 형성되고, 이 외부 와류실(110)의 바깥쪽 둘레면을 따라 일정 간격을 두고 상광하협(上廣下狹)의 보조증기 유입공(20')이 천공된 원반형의 보조 노즐(100)로 이루어져,Protruding portion (A ') formed in the inside of the conical space in which a portion of the upper portion is vertically bent at the center is protruded and the conical space is formed as the outer vortex chamber 110, the outer side of the outer vortex chamber (110) Comprising a disk-shaped auxiliary nozzle 100 in which the auxiliary steam inlet hole 20 'of the Sangkwang subsidiary at regular intervals along the circumferential surface,
도 3a에 도시한 바와 같이,As shown in Fig. 3a,
상기 보조 노즐(100)의 보조증기 유입공(20')과 주혼합 노즐(10)의 보조증기 유입공(20)을 서로 일치시키면서, 보조 노즐(100)의 외부 와류실(110) 내로 상기 주혼합 노즐(10)의 중심 돌출부(A)를 삽입시켜 구성된 것을 특징으로 한다.The auxiliary steam inlet 20 ′ of the auxiliary nozzle 100 and the auxiliary steam inlet 20 of the main mixing nozzle 10 coincide with each other, and enter into the main vortex chamber 110 of the auxiliary nozzle 100. Characterized in that configured by inserting the central projection (A) of the mixing nozzle (10).
또한, 주혼합 노즐(10)과 보조 노즐(100)이 결합되었을 경우, 내부 분사공(80)이 외부 분사공(90)보다 돌출되어 지는 것을 특징으로 한다.In addition, when the main mixing nozzle 10 and the auxiliary nozzle 100 is combined, the inner injection hole 80 is characterized in that protrudes than the outer injection hole (90).
다음은 이와 같이 구성되는 주혼합 노즐과 보조 노즐 각각의 작용에 대해서 설명한 것이다.Next, the operation of each of the main mixing nozzle and the auxiliary nozzle configured as described above will be described.
도 1a와 1b 및 1c에 도시한 바와 같이, 주혼합 노즐(10)에서 내부화염의 형성은 내부 화염용 연료공급구(30)에서 공급된 연료를 일정하게 접선 방향으로 뚫린 다수의 내부 화염용 주연료 주입구(40)를 통과하여 내부 와류실(60)에서 선회하여 내부 분사공(80)에서 분무되는 것이다. 분사된 액체는 선회속도와 축방향 속도를 가지므로 도 3에 도시한 바와 같이, 원추상의 화염을 형성한다. 또한, 보조 증기 유입공(20)을 통해 연소 보조용 증기를 공급할 수 있는 구조를 가지고 있다.As shown in Figures 1a, 1b and 1c, the formation of the internal flame in the main mixing nozzle 10 is the number of internal flames for which the fuel supplied from the internal flame fuel supply port 30 is tangentially drilled in a tangential direction. It passes through the fuel inlet 40 and is rotated in the inner vortex chamber 60 is sprayed from the inner injection hole (80). The injected liquid has a rotational speed and an axial speed, so as shown in FIG. 3, a conical flame is formed. In addition, it has a structure that can supply the combustion auxiliary steam through the auxiliary steam inlet (20).
또한, 도 2a와 2b 및 2c는 외부 화염을 형성하기 위한 보조 노즐(100)을 도시한 것으로서, 도 1의 주혼합 노즐(10)이 결합되며, 상기 도 1의 외부 화염용 연료공급공(70)에서 공급된 연료를 접선 방향으로 일정하게 경사진 다수의 외부 화염용 주연료 주입구(50)를 통하여 주혼합 노즐(10)과 보조 노즐(100)의 조립에 의해 형성되는 도 3의 외부 와류실(110)에서 선회한 후, 외부 분사공(90)을 통하여 외부 화염을 생성하는 구조로 되어 있다.2A, 2B, and 2C illustrate an auxiliary nozzle 100 for forming an external flame, in which the main mixing nozzle 10 of FIG. 1 is coupled, and the fuel supply hole 70 for the external flame of FIG. 3 is formed by assembling the main mixing nozzle 10 and the auxiliary nozzle 100 through a plurality of external flame main fuel inlets 50 inclined in a tangential direction. After turning at 110, it is a structure which produces an external flame through the external injection hole 90.
도 3b는 본 발명에 따른 2단 와류 압력분사실 노즐의 작용에 의한 화염 형상을 도시한 것으로서, 도시한 바와 같이, 연료는 주혼합 노즐(10)과 보조 노즐(100)에 위치한 내부 와류실(60)과 외부 와류실(110)을 통하여 내부 분사공(80)과 외부 분사공(90)으로 분사되어 화염을 2중으로 형성시킬 수 있는 구조로 되어 있어, 내부 분사공(80)과 외부 분사공(90)으로부터 형성되는 두 화염은 상대적으로 외경이 적은 내부 와류실(60)과 내부 분사공(80)을 통과함에 따라, 분사각이 적은 내부 화염(나)과 외경이 큰 외부 와류실(110)을 통해 분무되는 외부 화염(가)으로 형성된다.Figure 3b shows a flame shape by the action of the two-stage vortex pressure injection chamber nozzle according to the present invention, as shown, the fuel is located inside the main vortex chamber 10 and the auxiliary vortex chamber (100) 60 is injected into the inner spray hole 80 and the outer spray hole 90 through the outer vortex chamber 110 to form a double flame, the inner spray hole 80 and the outer spray hole As the two flames formed from the 90 pass through the inner vortex chamber 60 and the inner injection hole 80 having a relatively small outer diameter, the inner flame (B) having a small injection angle and the outer vortex chamber 110 having a large outer diameter are formed. Formed by an external flame sprayed through
이때, 주혼합 노즐(10)의 내부 분사공(80)을 보조 노즐(100)의 외부 분사공(90)보다 돌출시킬 경우에는 내부, 외부 화염의 각도를 변화시킴으로써 안정된 내부, 외부 화염을 생성하는 구조로 되어 있다.At this time, when protruding the internal injection hole 80 of the main mixing nozzle 10 than the external injection hole 90 of the auxiliary nozzle 100 to generate a stable internal and external flame by changing the angle of the internal and external flames It is structured.
따라서, 본 발명에서의 질소산화물 저감 방법은 노즐 내부에서 연료를 분리, 분사시켜 2중 화염구조를 만들고, 이때 형성된 외부 화염(가)에 의해 내부 화염(나) 연소에 필요한 공기를 차단시켜 내부 화염(나)의 분위기를 연료과잉 상태로 만들어주는 것이다. 아울러, 연료 과잉 상태의 연소에 의해 발생되는 불완전 연소물은 온도가 비교적 낮은 화염 후단에서 연소공기와 혼합하여 연소가 이루어지므로 추가적인 질소산화물 발생 없이 완전연소가 된다.Therefore, the method for reducing nitrogen oxides in the present invention separates and injects fuel in the nozzle to make a double flame structure, and by blocking the air necessary for internal flame (B) combustion by the external flame (A) formed at this time, the internal flame It makes the atmosphere of (b) over fuel. In addition, the incomplete combustion products generated by the combustion of the fuel excess state is mixed with the combustion air at the rear end of the flame with a relatively low temperature, and thus combustion is completed without additional nitrogen oxide generation.
이상과 같은 목적과 구성으로 이루어진 본 발명의 유류 버너용 2단 와류 압력분사식 노즐에 의하면, 유류버너에 별도의 추가 설비 없이도 연료분사 형태와 연소용 공기 제어만으로 질소산화물을 효과적으로 저감할 수 있다. 또한, 질소산화물 저감을 위한 종래 설비의 개,보수를 수행할 경우 본 발명에 따라 개선된 노즐만으로도 종래의 노즐에 비해 질소산화물을 약 20% 정도 감소할 수 있어, 간단하고도 경제적인 장점을 발휘할 수 있다.According to the two-stage vortex pressure jet nozzle of the oil burner of the present invention having the above objects and configurations, the nitrogen oxide can be effectively reduced only by controlling the fuel injection form and the combustion air without additional equipment to the oil burner. In addition, when performing the maintenance and repair of the conventional equipment for reducing nitrogen oxides, even with the improved nozzles according to the present invention, nitrogen oxides can be reduced by about 20% compared to the conventional nozzles, thereby providing a simple and economical advantage. Can be.
Claims (3)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020000048212A KR100363765B1 (en) | 2000-08-21 | 2000-08-21 | 2-Staged Swirl Atomizer for Oil Burner |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020000048212A KR100363765B1 (en) | 2000-08-21 | 2000-08-21 | 2-Staged Swirl Atomizer for Oil Burner |
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| KR20000064082A true KR20000064082A (en) | 2000-11-06 |
| KR100363765B1 KR100363765B1 (en) | 2002-12-12 |
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| KR1020000048212A Expired - Lifetime KR100363765B1 (en) | 2000-08-21 | 2000-08-21 | 2-Staged Swirl Atomizer for Oil Burner |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100448566B1 (en) * | 2001-09-11 | 2004-09-13 | 두산중공업 주식회사 | 2-Staged swirl circulation nozzle |
| KR100742691B1 (en) * | 2005-09-06 | 2007-07-30 | 박석호 | Fuel injection nozzle for low nitrogen oxide generation |
| WO2010058875A1 (en) * | 2008-11-21 | 2010-05-27 | Korea Institute Of Industrial Technology | Fuel injection system and burner using the same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0545414U (en) * | 1991-10-24 | 1993-06-18 | シーケーデイ株式会社 | Spray nozzle |
| JPH0694218A (en) * | 1992-09-10 | 1994-04-05 | Mitsubishi Heavy Ind Ltd | Fuel injection valve |
| JP3254131B2 (en) * | 1996-03-07 | 2002-02-04 | 三菱重工業株式会社 | Liquid fuel gasification burner |
| JPH11311404A (en) * | 1998-04-30 | 1999-11-09 | Mitsubishi Heavy Ind Ltd | Combustor |
-
2000
- 2000-08-21 KR KR1020000048212A patent/KR100363765B1/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100448566B1 (en) * | 2001-09-11 | 2004-09-13 | 두산중공업 주식회사 | 2-Staged swirl circulation nozzle |
| KR100742691B1 (en) * | 2005-09-06 | 2007-07-30 | 박석호 | Fuel injection nozzle for low nitrogen oxide generation |
| WO2010058875A1 (en) * | 2008-11-21 | 2010-05-27 | Korea Institute Of Industrial Technology | Fuel injection system and burner using the same |
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