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RISS 인기검색어
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- 주제어 : 맥동연소(Oscillation Combustion) (검색결과 5 건)
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맥동연소기술을 적용한 산업용 복사관 버너시스템의 특성 평가
오혁진(Hyuk Jin Oh),조한창(Han Chang Cho),조길원(Kil Won Cho) 대한기계학회 2011 大韓機械學會論文集B Vol.35 No.5
맥동연소기술을 적용한 산업용 복사관버너의 연소특성을 살펴보기 위해 실규모 (120,000 ㎉/h) 산업용 복사관버너 설비를 사용하여 실험실 및 현장 테스트를 수행하였다. 제철부생가스를 사용하는 산업용 복사관버너의 3 가지 종류를 하나의 W 형 복사관이 장착된 실험설비에서 실험하였다. W 형 복사관이 다수 사용되는 대형 설비를 이용하여 장기운영 실험을 실시하였다. 맥동연소기술을 적용한 기실험설비들을 대상으로 성능향상 및 배가스조절 측면에서 다양한 실험조건으로 테스트를 진행 하였다. 맥동연소기술의 적용가능성 평가를 위해 NOx 저감 및 효율향상을 분석하였다. 맥동연소기술의 적용결과 에너지 절감, 복사관 수명 향상 및 생산성 향상 등이 얻어짐을 확인할 수 있었다. 최고의 성능 및 배가스 조절을 얻기 위한 최적의 운전조건이 각 버너별로 결정되었다. Combustion characteristics of industrial radiant tube (RT) burners with forced oscillating combustion technology are investigated using a real-scale (125,000 ㎉/h) industrial RT burner facility in both laboratory and field tests. Three different types of industrial RT burners using a by-product gas from the iron-and-steelmaking process are examined in a laboratory facility equipped with a W-type RT. During the field tests, an industrial RT burner is characterized in a large facility equipped with multiple RTs. Their performance and emission controls are investigated under diverse operating conditions. The feasibility of the forced oscillating combustion technology is evaluated by the extent of NOx reduction and the efficiency improvement. These improvements are able to save energy, extend the RT lifetime, and enhance productivity. The operating conditions that achieve the best performance and emission control for each RT burner are determined.
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맥동연소기술을 적용한 산업용 복사관 버너시스템의 특성 평가 : NO<SUB>x</SUB> 저감 및 성능 향상
오혁진(Hyuk Jin Oh),조한창(Han Chang Cho),조길원(Kil Won Cho) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11
Combustion characteristics of industrial radiant tube (RT) burners applied forced oscillating combustion technology are studied using a real-scale (125,000 ㎉/h) industrial RT burner facility in both laboratory and field tests. Three different types of industrial RT burners using a by-product gas in iron-and-steelmaking process are examined in the laboratory facility equipped with a single W-type RT. During the field tests, an industrial RT burner is characterized in the large facility equipped with multiple single-type RTs. Their performance and emission controls are investigated in diverse operating conditions. The feasibility of the forced oscillating combustion technology is eventually evaluated by the degree of NO<SUB>x</SUB> reductions and efficiency improvement. These improvements are able to save the energy, extend the RT lifetime and enhance the productivity. The most favorable operating conditions for achieving the best performance and emission control are determined in both tests for each RT burner.
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장병화(Byunghwa Jang),성연모(Yonmo Sung),오창용(Changyong Oh),김승태(Seungtae Kim),전유택(Yootaek Jeon) 대한기계학회 2018 대한기계학회 춘추학술대회 Vol.2018 No.12
Oscillating combustion characteristics was experimentally investigated to reduce NOx emissions and improve thermal efficiency in a 1MWth industrial burner for reheating furnaces. Natural gas was used as fuel. This study was carried out for a range of oscillating frequencies(1~5 Hz) and duty ratios(10%~40%). Furnace temperature and gas species concentrations were measured for with- and without oscillating flames. The NOx reduction efficiency for flames with oscillating combustion in comparison to flames without oscillating combustion increases with decreasing oscillating frequency and increasing duty ratio. The maximum NOx reduction efficiency was 32% in 1 Hz-40% oscillating flames. For the temperature measured at the furnace top-wall, the maximum temperature with oscillating flames was reduced at main flame regions, however, the overall temperature after main flame regions is higher than that of the flames without oscillating combustion.
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맥동연소기술이 접목된 복사관 버너에서의 NOx 배출 특성
조한창(Han Chang CHO),조길원(Kil Won CHO),김후중(Hoo Joong KIM) 대한기계학회 2008 大韓機械學會論文集B Vol.32 No.2
An experimental study was carried out in a small-scale test furnace to investigate the performance, such as NOx emission, enhancement of heat transfer, uniformity of temperature, and etc, of oscillating combustion applied in radiant tube burner system. A premixed type burner and a cyclic oscillating control valve were designed and used. The fuel, used commercial LPG in this study, was only oscillated using the cyclic oscillating control valve. As oscillating combustion was applied in radiant tube burner system, it is found that NOx emission, compared to no oscillation, could be reduced by 38% at 90~120rpm (1.5~2.0㎐). However, as oscillating frequency was increased, effect of abatement of NOx emission is gradually reduced. From the measurement of furnace heating time from 100℃ to 720℃, heat transfer is increased by 11.5% at the oscillation of 120rpm. Temperature distribution of radiant tube surface is more uniform at oscillation of 120rpm with decrease of the peak temperature and increase of low temperature. From these results, it is confirmed that oscillating combustion is useful in radiant tube burner system.
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다양한 산업용 열설비 대상 맥동연소 적용 통한 NOx 저감 및 에너지 절감 연구
오혁진(Hyuk Jin Oh),조한창(Han Chang Cho) 대한기계학회 2019 대한기계학회 춘추학술대회 Vol.2019 No.11
It is introduced about application results of an oscillating combustion technique in industrial fields. The technique is employed to reduce NOx emission and save fuel consumption. The oscillating system is designed relatively simple and economical, which consists of a control unit and an operation unit. The oscillating system is installed in direct heating facilities such as ladle preheaters and a reheating furnace. Each heating facility requires different oscillating conditions, of course. As a result, it is found that the oscillating combustion technique is very useful to reduce NOx emission and save fuel consumption in heating facilities. However, the results strongly depend on operation conditions and combustion loadings of facilities. The effects of oscillating combustion can be maximized in normal operation but reduced in unexpected operation or large turn down operation. Thus, an automatic control of oscillating conditions will be required to cover these unsteady operations in the future.
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