KR970046927A

KR970046927A - Combustion apparatus for reducing NOx in boilers

Info

Publication number: KR970046927A
Application number: KR1019950047619A
Authority: KR
Inventors: 이상선
Original assignee: 양재학; 고신열관리주식회사
Priority date: 1995-12-08
Filing date: 1995-12-08
Publication date: 1997-07-26

Abstract

본 발명은 보일러의 연소실에 공급되는 연소용 공기량을 조절하여 연소시 질소와 산소의 결합에 의해 생성되는 유해가스의 일종인 질소산화물(NOx)의 생성을 감소시켜 주기 위한 보일러의 질소산화물(NOx) 감소를 위한 연소장치에 관한 것이다. 이를 위해 본 발명은 보일러의 윈드박스(20)에 설치된 노즐(50) 외측으로 연소실(11)과 관통되는 복수개의 1-3차공기유입관(70)(71)(72)을 설치하고, 흡입팬(40)이 구비된 에어덕트(30)내에는 상기 1-3차공기유입관과 연통되는 복수개의 공기통로(31)(32)(33)를 형성하여 각각의 공기통로에 개별적 또는 동시작동이 가능한 복수개의 에어댐퍼(41)(42)(43)를 설치하므로서, 상기 흡입팬에 의해 흡입된 연소용 공기가 에어댐퍼에 의해 그 양이 조절된뒤 각각의 공기통로와 공기유입관을 거쳐 화염의 중심부와 중간부분 및 가장자리에 골고루 공급되므로 화염에 고온형성대가 형성되지 않고 화염의 각 부위별로 연소속도와 연소상태 및 화염의 온도조절이 가능하여 질소산화물의 생성을 최소화 할수 있는 것이다.The present invention regulates the amount of combustion air supplied to the combustion chamber of the boiler to reduce the generation of nitrogen oxides (NOx), which is a kind of harmful gas produced by the combination of nitrogen and oxygen during combustion, NOx of the boiler (NOx) A combustion apparatus for the reduction. To this end, the present invention installs a plurality of 1-3 primary air inlet pipes 70, 71, 72 through the combustion chamber 11 and the outside of the nozzle 50 installed in the wind box 20 of the boiler, and suction In the air duct 30 provided with the fan 40, a plurality of air passages 31, 32, 33 are formed to communicate with the 1-3 primary air inlet pipes, so that each air passage is individually or simultaneously operated. By installing a plurality of air dampers (41, 42, 43) which are possible, the amount of combustion air sucked by the suction fan is adjusted by the air damper, and then through each air passage and air inlet pipe. Since it is evenly supplied to the center, middle and edge of the flame, high temperature forming zone is not formed in the flame, and the combustion speed, combustion state, and temperature of the flame can be controlled for each part of the flame to minimize the generation of nitrogen oxides.

Description

Combustion apparatus for reducing NOx in boilers

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 정단면도.1 is a front cross-sectional view of the present invention.

Claims

An air duct 30 installed in the wind box 20 provided on one side of the main body 10 of the boiler and having a suction fan 40 which is a forced suction means of combustion air, and faces the combustion chamber 11 in the wind box. In the combustion apparatus of the boiler which consists of the nozzle 50 installed so that it may be installed in the periphery of the said nozzle 50, the both ends of the several diameter which are located between the combustion chamber 11 and the air duct 30, respectively, A plurality of air passages 31, which are divided into other air inlet pipes 70, 71, 72 and the inside of the air duct 30, and penetrate each of the air inlet pipes 70, 71, 72. A plurality of diaphragms 34 and 35 that form 32 and 33 and a plurality of combustion air flows installed at the ends of the air passages 31 and 32 and 33 to control the amount of combustion air flowing into the respective air passages. Combustion apparatus for reducing nitrogen oxides (NOx) of the boiler, characterized in that consisting of air dampers (41, 42, 43).