KR100832875B1 - Duct burner igniter protection structure of de-nox equipment - Google Patents

Duct burner igniter protection structure of de-nox equipment Download PDF

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KR100832875B1
KR100832875B1 KR1020070040897A KR20070040897A KR100832875B1 KR 100832875 B1 KR100832875 B1 KR 100832875B1 KR 1020070040897 A KR1020070040897 A KR 1020070040897A KR 20070040897 A KR20070040897 A KR 20070040897A KR 100832875 B1 KR100832875 B1 KR 100832875B1
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South Korea
Prior art keywords
duct burner
lead wire
igniter
power
boiler
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KR1020070040897A
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Korean (ko)
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서종춘
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한국서부발전 주식회사
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q3/00—Igniters using electrically-produced sparks
    • F23Q3/006—Details
    • 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
    • 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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/30—Loose or shaped packing elements, e.g. Raschig rings or Berl saddles, for pouring into the apparatus for mass or heat transfer
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)

Abstract

A duct burner igniter protection structure of denitration equipment of a boiler is provided to disengage a fixed part from a duct burner easily during duct burner operation of the boiler by screwing the fixed part with a body of the duct burner, and to prevent non-operation of a catalytic converter by preventing the ignition defect of igniter. A duct burner igniter protection structure of denitration equipment of a boiler comprises a power leading wire(2), a leading wire connector(3), an insulation part(4), a fixed part(6), and an ignition plug(7). A power(1) is supplied to the power leading wire. The fixed part is fixed at the duct burner. The leading wire connector and the insulation part are covered by a heat-resisting silicon cover(8). The power leading wire is covered by a rubber tube(9). The heat-resisting silicon cover and the rubber tube are covered by a coating tube(10) and a protective pipe(11). The fixed part is disengaged from the duct burner freely.

Description

보일러 탈질설비의 덕트버너 점화기 보호구조{Duct burner igniter protection structure of de-NOx equipment}Duct burner igniter protection structure of de-NOx equipment}

도 1은 본 발명에 따른 탈질설비의 덕트버너 점화기 보호구조를 나타낸 단면도,1 is a cross-sectional view showing a duct burner igniter protection structure of the denitrification equipment according to the present invention;

도 2는 도 1에서 요부 분리 구성도,FIG. 2 is a schematic view illustrating a main part of FIG.

도 3은 일반적인 덕트버너 점화기의 설치 상태도이고,3 is a state diagram of the installation of a general duct burner igniter,

도 4는 종래 탈질설비의 덕트버너 점화기를 나타낸 단면도로서, 도 1에 대응되는 도면이다.FIG. 4 is a cross-sectional view illustrating a duct burner igniter of a conventional denitrification system, corresponding to FIG. 1.

-도면의 주요부분에 대한 부호의 설명-Explanation of symbols on the main parts of the drawing

1 : 전원, 2 : 전원 인입선,1: power supply, 2: power lead wire,

3 : 인입선 커넥터, 4 : 절연 애자부,3: lead wire connector, 4: insulator part,

5 : 덕트버너, 6 : 고정부,5: duct burner, 6: fixing part,

7 : 점화 플러그, 8 : 내열 실리콘 커버,7: spark plug, 8: heat resistant silicone cover,

9 : 고무튜브, 10 : 코팅튜브,9: rubber tube, 10: coated tube,

11 : 보호관, 100 : 점화기.11: protective tube, 100: igniter.

본 발명은 발전설비에서 질소산화물을 저감시키는 목적으로 보일러 배기가스의 온도를 올리기 위해 설치되는 보일러 탈질설비의 덕트버너 점화기에 관한 것으로, 더욱 상세하게는 보일러 운전중 발생되는 배기가스 중 미연탄소분에 의한 오염심화로 착화불량을 방지하여 탈질설비의 운전중단을 예방할 수 있는 보일러 탈질설비의 덕트버너 점화기 보호구조에 관한 것이다.The present invention relates to a duct burner igniter of a boiler denitrification system which is installed to raise the temperature of the boiler exhaust gas for the purpose of reducing nitrogen oxides in power generation equipment, and more particularly, by unburned carbon in the exhaust gas generated during boiler operation. The present invention relates to a duct burner igniter protection structure of a boiler denitrification system that can prevent ignition failure due to deepening of pollution and thus prevent the operation of the denitrification facility.

주지된 바와 같이 대기환경 규제법에 따른 질소산화물(NOx) 저감장치인 고온탈질 촉매반응기인 SCR(Selective Catalytic Reduction)은 질소산화물을 배출하는 각종 산업설비 시설에 널리 사용되고 있는바, 이중 발전설비의 보일러 내부에서 발생하는 질소산화물을 저감시키기 위해 덕트버너가 설치되어 있으며, 이 덕트버너는 덕트 내부에서 흐름가스(Flue gas)를 재가열하여 배기가스의 온도를 암모니아 약품 주입이 가능한 온도까지 올려 화학반응에 의해 질소산화물을 저감시키도록 도와주는 역할을 하는 버너이다.As is well known, SCR (Selective Catalytic Reduction), a high-temperature denitrification catalytic reactor that is a nitrogen oxide (NOx) reduction device according to the air environment regulation law, is widely used in various industrial facilities that emit nitrogen oxides. A duct burner is installed to reduce nitrogen oxides generated in the duct burner. The duct burner reheats the flue gas inside the duct to raise the temperature of the exhaust gas to a temperature where ammonia chemicals can be injected. It is a burner that helps to reduce oxides.

이와 같은 덕트버너에는 도 4의 점화기(100)가 도 3과 같이 설치되어 있는데, 이 덕터버너 점화기(100) 전원 인입부에는 보일러 설비운전 시 발생되는 배기가스 중 미연탄소분(101)과 절연애자부(4) 외각부분에 부착되어 코로나(102)를 발생시킴에 따라 누전으로 절연이 파괴되어 점화기(100)의 착화가 불량되는 경우가 발생하게 되며, 이러한 점화기(100)의 착화불량으로 덕트버너(5)의 운전이 불가능하여 질소산화물 제거를 위한 암모니아 약품주입이 불가능함에 따라 자연히 탈질설비의 운전이 중단되어 전력공급에 지장을 초래함은 물론, 발전정지 사태까지 초래 하게 되는 문제점이 있었다.In such a duct burner, the igniter 100 of FIG. 4 is installed as shown in FIG. 3, and the inductor burner igniter 100 power inlet part includes unburned carbon powder 101 and an insulator part of the exhaust gas generated during boiler operation. (4) As the corona 102 is attached to the outer portion, insulation may be broken by a short circuit, resulting in poor ignition of the igniter 100. Duct burners may be caused by poor ignition of the igniter 100. 5) Because of the impossibility of injecting ammonia chemicals to remove nitrogen oxides, the operation of the denitrification system was naturally interrupted, which led to the interruption of power supply and the power outage.

이에 본 발명은 상기와 같은 종래 문제점을 해결하기 위해 발명된 것으로, 덕트버너를 점화시키는 점화기의 도입선 부분을 외부에서 밀봉처리하여 보호하여 배기가스 중 발생되는 미연탄소분으로부터 점화기의 인입부분을 완전히 보호하여 코로나 발생을 방지할 뿐만 아니라, 보일러 운전중에도 점화기를 보일러의 덕트버너에서 분리가능하게 이루어지는 보일러 탈질설비의 덕트버너 점화기 보호구조를 제공함에 그 목적이 있다.Therefore, the present invention was invented to solve the above-mentioned conventional problems, and protects the inlet portion of the igniter from the unburned carbon generated in the exhaust gas by protecting the lead line portion of the igniter igniting the duct burner from the outside. In addition to preventing corona generation, an object of the present invention is to provide a duct burner igniter protection structure of a boiler denitrification system, in which an igniter can be detached from a duct burner of a boiler while the boiler is operating.

상기와 같은 목적을 달성하기 위한 본 발명은 전원이 공급되는 전원 인입선과, 이 전원 인입선에 연결되는 인입선 커넥터, 이 인입선 커넥터를 감싸는 절연 애자부, 덕트버너에 고정되는 고정볼트 및, 말단에 설치되는 점화플러그를 갖추어 이루어진 보일러 탈질설비의 덕트버너 점화기에 있어서, 상기 인입선 커넥터와 절연 애자부는 내열 실리콘 커버로 감싸고, 상기 전원 인입선을 내열 실리콘 재질의 고무튜브로 감싸지며, 이들 내열 실리콘 커버와 고무 튜브를 코팅튜브와 보호관으로 감싸아 이루어지되, 상기 고정부는 덕트버너와 분리 및 고정 가능하도록 나사 체결구조로 이루어져 있다.The present invention for achieving the above object is a power lead wire that is supplied with power, a lead wire connector connected to the power lead wire, an insulator part surrounding the lead wire connector, a fixing bolt fixed to the duct burner, and is installed at the end In a duct burner igniter of a boiler denitrification system having a spark plug, the lead wire connector and the insulator part are covered with a heat resistant silicone cover, the power lead wire is wrapped with a rubber tube made of a heat resistant silicone material, and the heat resistant silicone cover and the rubber tube are Wrapping is made of a coating tube and a protective tube, the fixing portion is composed of a screw fastening structure to be separated and fixed to the duct burner.

이하, 본 발명의 바람직한 실시예를 첨부도면을 참고로 상세히 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 덕트커버 점화기 보호구조를 나타낸 단면도이고, 도 2는 본 발명에 따른 점화기를 보호하는 보호수단들의 분리 구성도이며, 종래구조와 동일한 부분에서는 동일한 참조부호를 부여한다.1 is a cross-sectional view showing a duct cover igniter protection structure according to the present invention, Figure 2 is a separate configuration of the protection means for protecting the igniter according to the present invention, the same reference numerals are given in the same parts as the conventional structure.

본 발명은 전원(1)이 공급되는 전원 인입선(2)과, 이 전원 인입선(2)에 연결되는 인입선 커넥터(3), 이 인입선 커넥터(3)를 감싸는 절연 애자부(4), 덕트버너(5)에 고정되는 고정부(6) 및, 말단에 설치되는 점화플러그(7)를 갖추어 이루어진 보일러 탈질설비의 덕트버너 점화기에 있어서, 상기 인입선 커넥터(3)와 절연 애자부(4)는 내열 실리콘 커버(8)로 감싸고, 상기 전원 인입선(2)은 내열 실리콘 재질의 고무튜브(9)로 감싸되, 이들 내열 실리콘 커버(8)와 고무튜브(9)를 코팅튜브(10)와 보호관(11)으로 감싸며, 상기 고정부(6)는 덕트버너(5)와 분리 및 고정이 자유롭게 나사 체결구조를 갖춘 구조로 되어 있다.According to the present invention, a power lead wire 2 to which a power source 1 is supplied, a lead wire connector 3 connected to the power lead wire 2, an insulator part 4 surrounding the lead wire connector 3, and a duct burner ( In the duct burner igniter of the boiler denitrification system which is provided with the fixing part 6 fixed to 5) and the ignition plug 7 installed at the end, the lead wire connector 3 and the insulator part 4 are heat-resistant silicon. Wrapped with a cover (8), the power lead wire (2) is wrapped with a rubber tube (9) of heat-resistant silicone material, these heat-resistant silicone cover (8) and rubber tube (9) coated tube 10 and protective tube (11) Wrapped in), the fixing part 6 is a structure having a screw fastening structure freely detachable from and fixed to the duct burner 5.

여기서 상기 인입선 커넥터(3)와 절연 애자부(4)를 감싸는 내열 실리콘 커버(8)는 절연 애자부(4)를 보호하도록 되어 있으며, 이를 유리섬유편조 액상실리콘 재질로 되어 있는 코팅튜브(10)로 감싸고 최종적으로 아연도강재질 보호관(11)으로 감싸아 보호하도록 되어 있다.Here, the heat-resistant silicone cover 8 surrounding the lead wire connector 3 and the insulator part 4 is to protect the insulator part 4, which is a coating tube 10 made of glass fiber braided liquid silicone material. Wrapped and finally wrapped with galvanized steel protection tube (11) to protect.

따라서 상기 전원 인입선(2)과, 인입선 커넥터(3), 절연 애자부(4) 및 고정부(6)는 최종 바깥쪽으로 아연도강 재질의 보호관(11)으로 랩핑(Wrapping)하여 보호하는 구조를 갖는다.Therefore, the power lead wire 2, the lead wire connector 3, the insulator 4 and the fixing portion 6 has a structure to wrap and protect with a protective tube 11 made of galvanized steel outward. .

그리고 상기 점화플러그(7)의 상단에 배치되는 고정부(6)는 덕트버너(5)의 본체와 연결 고정시 나사방식으로 체결됨에 따라 보일러의 덕트버너 운전시에도 필요에 따라 이 덕트버너(5)에서 분리하거나 재체결이 가능하도록 되어 있다.In addition, the fixing part 6 disposed on the upper end of the spark plug 7 is fastened in a screw manner when the connection is fixed to the main body of the duct burner 5, so that the duct burner 5 may be used when the boiler duct burner is operated. ) Or to be refastened.

상기와 같이 본 발명은 보일러 탈질설비의 덕트버너 점화기가 보일러 운전중에 발생되는 미연탄소분에 의한 누전으로 착화 불량상태를 방지하여 탈질설비인 촉매 반응기의 미가동을 예방하여 전체적으로 발전설비의 가동율 증대와 설비의 신뢰성 향상에도 도움을 줄 수 있는 효과 등을 제공할 수 있다.As described above, the present invention prevents poor ignition of the duct burner igniter of the boiler denitrification facility due to the leakage of unburned carbon generated during boiler operation, thereby preventing the deactivation of the catalytic reactor, which is a denitrification facility, and increasing the operation rate of the power plant as a whole. It can provide an effect that can help to improve the reliability of.

Claims (1)

전원(1)이 공급되는 전원 인입선(2)과, 이 전원 인입선(2)에 연결되는 인입선 커넥터(3), 이 인입선 커넥터(3)를 감싸는 절연 애자부(4), 덕트버너(5)에 고정되는 고정부(6) 및, 말단에 설치되는 점화플러그(7)를 갖추어 이루어진 보일러 탈질설비의 덕트버너 점화기에 있어서, A power lead wire 2 to which the power source 1 is supplied, a lead wire connector 3 connected to the power lead wire 2, an insulator portion 4 surrounding the lead wire connector 3, and a duct burner 5; In the duct burner igniter of the boiler denitrification system which is provided with the fixed part 6 fixed and the ignition plug 7 provided in the terminal, 상기 인입선 커넥터(3)와 절연 애자부(4)는 내열 실리콘 커버(8)로 감싸고, 상기 전원 인입선(2)은 내열 실리콘 재질의 고무튜브(9)로 감싸되, 이들 내열 실리콘 커버(8)와 고무튜브(9)를 코팅튜브(10)와 보호관(11)으로 감싸며, 상기 고정부(6)는 덕트버너(5)와 분리 및 고정이 자유롭게 나사 체결구조를 갖춘 것을 특징으로 하는 보일러 탈질설비의 덕트버너 점화기 보호구조.The lead wire connector 3 and the insulator 4 are wrapped with a heat resistant silicone cover 8, and the power lead wire 2 is wrapped with a rubber tube 9 made of a heat resistant silicone material, and these heat resistant silicone covers 8 And a rubber tube (9) wrapped with a coating tube (10) and a protective tube (11), and the fixing part (6) is a boiler denitrification facility, characterized in that the screw connection structure is freely detachable from and fixed to the duct burner (5). Duct burner igniter protection structure.
KR1020070040897A 2007-04-26 2007-04-26 Duct burner igniter protection structure of de-nox equipment KR100832875B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0719471A (en) * 1993-06-29 1995-01-20 Miura Co Ltd Electrode part
KR19990036851U (en) * 1998-02-28 1999-09-27 이구택 Continuous Ignition Device of Scarping Machine
JPH11297452A (en) 1998-04-08 1999-10-29 Sumitomo Wiring Syst Ltd Deterioration priventive structure for high pressure connection part for internal combustion engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0719471A (en) * 1993-06-29 1995-01-20 Miura Co Ltd Electrode part
KR19990036851U (en) * 1998-02-28 1999-09-27 이구택 Continuous Ignition Device of Scarping Machine
JPH11297452A (en) 1998-04-08 1999-10-29 Sumitomo Wiring Syst Ltd Deterioration priventive structure for high pressure connection part for internal combustion engine

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