• Title, Summary, Keyword: 탈황, 탈질

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Development of DeSOx & DeNOx System Using Fin-tube Type Non-thermal Plasma Reactor (핀-튜브형 저온 플라즈마 반응기를 이용한 탈황탈질 시스템 개발)

  • 김유석;백민수;유정석;김태희;최석호;문길호
    • Proceedings of the Korea Air Pollution Research Association Conference
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    • pp.423-424
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    • 2001
  • 플라즈마를 이용한 가스상 오염물질 처리에 대한 연구는 일부 선진국에서 1970년대부터 시작되어 현재는 상용화 연구가 활발히 진행되고 있으며, 국내에서도 1990년대 중반부터 화력발전소에서 배출되는 연소가스 중의 유해성분을 처리하기 위한 연구를 필두로 최근에는 휘발성 유기화합물(VOCs) 분해관련 연구 등 상당한 연구가 수행되고 있다. 저온 플라즈마 공정은 전기적 방전 특성을 이용하므로 스트리머코로나 형성영역인 반응기와 전원공급장치 사이의 기계적ㆍ전기적 매칭(matching)이 중요한 과제이다. (중략)

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Experimental Analysis on the Desulfurizarion and Denitrification Efficiencies in Pulsed Corona Discharge Process (펄스 코로나 방전 공정에서 탈질, 탈황 효율의 실험적 분석)

  • Kim, Sung-Min;Kim, Kyo-Seon
    • Journal of Industrial Technology
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    • v.23 no.A
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    • pp.181-186
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    • 2003
  • In this study, we analyzed $NO_x$ and $SO_x$ removal efficiencies by a pulsed corona discharge process and investigated the effect of several process variables. The removal efficiencies of NO and $SO_2$ were measured changing the process variables of initial concentrations of NO, $H_2O$, and $NH_3$, $SO_2$, applied voltage, pulse frequency and residence time. As the applied voltage or the frequency of applied voltage or the residence time increases, the NO and $SO_2$ removal efficiencies increase. The NO and $SO_2$ removal efficiencies also increase by the addition of $O_2$ or $H_2O$, or by using the large diameter of the discharge electrode. The experimental results can be used as a basis to design the pulsed corona discharge process to remove $NO_x$, $SO_x$ and VOCs.

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A Study on the Removal of SOx/NOx by a Pulsed Corona Discharge in the Wire-Plate Reactor (Wire-Plate 반응기에서 펄스 코로나 방전을 이용한 탈황 탈질에 관한 연구)

  • Shin, Wan-Ho;Song, Yong-Hoon;Kim, Han-Seok;Choi, Yeon-Seok;Kim, Seok-Joon
    • Proceedings of the KIEE Conference
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    • pp.1910-1912
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    • 1996
  • This paper presents the results of laboratory experimentals to remove $SO_2$ and $NO_x$ by a pulsed corona discharge in the wire-plate reactor. A rotating spark gap switch was used to generate the pulse by chewing the dc high voltage. Repetition frequency of the pulse was 60Hz and rising time of 50ns. The photo pictures of positive streamer corona taken by ICCD camera, pulse voltage and current were measured using a digital oscilloscope. Simultaneous effects of $C_{2}H_{4}$ injection and heterogeneous chemical reactions on nonthermal plasma process to remove $SO_2$ and $NO_x$ from flue gas were investigated in the present study

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Operational Characteristics of Pilot Scale Plasma DeSOx-DeNOx System for Treatment of Coal-Fired Flue Gas (석탄연소 배가스 처리용 플라즈마 탈황탈질 시스템의 운전 특성)

  • Jang, Gil-Hong;Paek, Min-Su;Kim, Tae-Hee;Jeong, Jong-Han
    • Proceedings of the KIEE Conference
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    • pp.1806-1808
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    • 1998
  • Tests of pilot-scale plasma DeSOx-DeNOx system using pulsed streamer corona were carried out. The system consists of the reactor with wire-plate electrodes the $30kW_{max}$. MPC type pulse generator, and $1MW_{th}$ pulverized coal combustor as a flue gas source. $NH_3$ and $C_2H_4$ were used to enhance the removal rate. The experimental result on the removal efficiency of SOx/NOx and on the effect of the additives was presented in this paper.

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Correlation Analysis Between DeNOx and $DeSO_2$ and Specific Energy Density in Pulse Corona Discharge (펄스 코로나 방건공정내에서의 비에너지 밀도에 따른 탈황.탈질 특성의 상관성 분석)

  • 정재우;이용환;최유리;조무현;남궁원
    • Proceedings of the Korea Air Pollution Research Association Conference
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    • pp.235-236
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    • 2000
  • 배기가스의 처리를 위한 펄스 코로나 방전공정은 질소 산화물 및 황산화물을 동시에 제거할수 있는 효율적인 공정으로 알려져 있으며 현재 국내외에서 많은 연구들이 수행되고 있는 공정이다. 플라즈마 상태를 이용하는 펄스 코로나 방전공정에서 운전변수들의 변화는 플라즈마 특성을 변화시켜 공정의 효율성에 영향을 미치게 된다. 특히 플라즈마의 특성에 영향을 미치는 여러 가지 변수들 사이에는 강한 상호의존성을 갖고 있으므로 하나의 운전변수가 미치는 영향에 관한 정확한 규명은 매우 복잡하고 어려운 일이다. (중략)

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Interactions between Hydrodesulfurization of Thiophene and Hydrodenitrogenation of Pyridine and the Kinetic Analysis (수첨탈황과 탈질반응에서 Thiophene과 Pyridine의 상호영향과 그 속도론적 해석)

  • 박종희;한창훈;김경림
    • Journal of Korean Society for Atmospheric Environment
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    • v.4 no.1
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    • pp.13-22
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    • 1988
  • Interactions between hydrodesulfurization of thiophene and hydrodenitrogenation of pyridine and the kinetic analysis were studied over $Ni-W/\gamma-Al_2O_3$ catalysts and this study was made at temperatures ranging from 473-673 K and at total pressures ranging from 10-25 $\times 10^5$ Pa. Hydrodesulfurization of thiophene was inhibited by presence of pyridine at all temperatures studied, and the rate of pyridine hydrodenitrogenation was slower than that of thiophene hydrodesulfurization in the operating conditions. Pyridine hydrodenitrogenation was also inhibited by the presence of thiophene at low temperatures but was enhanced by the thiophene at temperatures higher than 613K. Thiophene reaction rate was determined by multiple linear regression analysis using Langmuir-Hinshelwood-Hougen-Watson model and the result was given to be $r = kP_T^p_H/(1+K_Tp_T+K_Pp_P)^2$. At each temperature, reaction rate constants and absorption equilibrium equilibrium constants were determined and the activation energy was 12.98 kcal/gmol from Arrhenius plot.

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A Study on Desulfurization and Denitrification of Flue Gas in Industry Boiler (산업용 보일러의 배연탈황 및 탈질에 관한 연구)

  • 이태호;정순형;정흥기
    • Journal of environmental and Sanitary engineering
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    • v.10 no.3
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    • pp.99-104
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    • 1995
  • The objective of this study was to investigate the effect on denuclearization and decertification of flue gas by utilizing Mg( OH)$_{2}$ and NaOH as reagents in industrial boiler. We used packed absorber with Tellerette in all cases. And pH of circulation solution, rate of liquid per gas in absorber, COD concentration by pH variation in oxidation basin were inves- tigated. The following conclusions were obtained from experimental results: 1. Concerning running cost for reagents, Mg( OH)$_{2}$ reagent for treatment of flue gas was more economical than NaOH. 2. While Mg( OH )$_{2}$ and NaOH as absorbents were used, then the ratio of denuclearization was 96 and 97% respectively and nitrification was recorded 29 and 25% . 3. In this absorption tests the optimum condition for ratio of liquid per gas, pH and nonregenerable salt concentration of circulation solution were 3.6ℓ /Nm$^{3}$, 6.0, 0.5∼1.0% respectively, 4. Initial COD in oxidation basin was 800 ∼ 1,00099ut after adjusting to pH 7.0, COD of effluent water was less than 20ppm.

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A study on topology of the DeNOx, DeSOx using magnetic pulse compressors (가포화 자기스위치를 이용한 탈황탈질 시스템의 전원장치에 관한 연구)

  • Kim, Soo-Hong;Lee, Young-Duck;Kim, Seung-Mo;Kim, Byung-Sub;Kwon, Byung-Ki;Choi, Chang-Ho
    • Proceedings of the KIPE Conference
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    • pp.157-159
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    • 2008
  • Generally, Capacitor charging power supply (CCPS) consist of the full-bridge inverter, LC resonant tank and capacitance load. The multi-connection systems are normally used for high voltage or high power application. In this paper, conventional parallel operation resonant type and proposed series operation PWM type CCPS for pulse corona occurrence of DeSOx, DeNOx system using magnetic pulse compressor make a comparison. The effect of proposed CCPS is verified by circuit characteristics analysis of parallel operation resonant type and series operation PWM type, and it is confirmed by simulation result.

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Development of the 120kW Class MPC Power Supply for DeNOx and DeSox System (120kW급 탈황탈질용 MPC전원장치 개발)

  • Kim, Soo-Hong;Kwon, Byung-Ki
    • Proceedings of the KIPE Conference
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    • pp.237-239
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    • 2009
  • This paper presents a new developed 160kV-120kW Class MPC (magnetic pulse compressor) power supply for DeNOx, DeSOx system. The circuit consists of N-series connected CCPS (capacitor charging power supply) and MPC Tank. The MPC power supply developed compared to the conventional LC resonant type has many advantage, it was verified reliability of a product by module, simulator and tank connection test. Now, the developed MPC power supply is installed POSCO sintering plant for DeSOx, DeNOx system.

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전(電)력질주 - 한국남동발전(주) 삼천포화력본부

  • 대한전기협회
    • JOURNAL OF ELECTRICAL WORLD
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    • pp.92-97
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    • 2014
  • 국내 최초의 대용량 석탄화력발전소인 삼천포화력본부(본부장 노선만)는 한국남동발전(주)의 핵심 발전소 중 하나이다. 1984년 1호기 준공이래 1998년 6호기 준공까지 약 15년에 걸쳐 총 여섯 호기가 준공되었고, 오늘날까지 30년에 걸쳐 양질의 전기를 생산해내고 있다. 특히 1,2호기는 이미 30년이상 운전하며 1980년대 이후 우리나라의 급격한 경제성장을 뒤에서 든든히 뒷받침한 효자 발전소라 아니할 수 없다. 그런데 사실 발전소가 오래됐다고 하면 환경적인 측면에서 부정적 인식이 발생할 수 있다. 하지만 삼천포화력본부는 1~6호기에 대한 환경설비(탈황 탈질)를 준공함으로써 이러한 우려도 불식시켰다. 여기에 최근에는 친환경 발전소로도 명성이 높다. 해양소수력, 태양광 등 신재생발전설비들을 차례로 준공, 운영하면서 기존 석탄화력발전소의 차세대 운영 모델을 제시하고 있는 것이다. 석탄화력발전소의 바로미터로 떠오른 삼천포화력본부를 소개한다.

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