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박일건,홍민선,김범석,강호근,Park, Il-Gun,Hong, Min-Sun,Kim, Beom-Seok,Kang, Ho-Geun 한국터널지하공간학회 2012 한국터널지하공간학회논문집 Vol.14 No.6
The need for management of tunnel air quality is imminent considering the rapid increase of number and span of tunnels in Korea. To investigate spatial distribution of $CO_2$ within tunnels, $CO_2$ were measured and model simulations were performed in Namsan 1 tunnel. Results show that $CO_2$ concentrations were 250 ppm to 400 ppm higher in the exit than tunnel entrance. Also, $CO_2$ concentrations were 200 ppm to 300 ppm lower inside no ventilating vehicle than in the tunnel. Both experimental and model simulation results show that spatial distribution and concentration gradient of air pollutant inside tunnel are highly dependent on traffic density. 지속적인 터널 건설의 증가는 터널 내 대기질 관리에 대한 필요성을 점증시키고 있어 측정 및 모델 모사를 통한 터널 내 대기질 거동에 대한 연구를 수행하였다. 남산1호 터널 입구와 출구의 $CO_2$ 농도차는 250 ppm~400 ppm으로 출구쪽이 높았으며 환기를 안 하는 차량 내부의 농도는 외부에 비해 200 ppm~300 ppm 낮게 측정되었다. 교통량이 적을 시 터널 내 유속은 빨라지며 일정한 농도 구배를 나타내고, 교통량이 증가하면 일정치 않은 농도 구배를 나타내는 것으로 나타났다.
제올라이트와 활성탄을 이용한 대기 중 CO₂ 흡착 및 재생 특성
박일건(Il Gun Park),홍민선(Min Sun Hong),김범석(Byum Seok Kim),강호근(Ho Geun Kang) 大韓環境工學會 2013 대한환경공학회지 Vol.35 No.5
대기 중 CO₂ 포집 기술은 비점오염원 배출 CO₂를 포집할 수 있는 유일한 기술 중 하나이다. 본 논문에서는 저농도 CO₂를 이용한 흡착 실험을 수행하였다. 세 종류의 흡착제를 이용한 흡착과 열재생을 반복하는 실험을 수행한 결과 제올라이트 5A, 13X 그리고 활성탄의 CO₂ 흡착량은 21 mg/g, 12 mg/g 그리고 6 mg/g으로 나타났으며, 열재생 반복실험 결과에서 제올라이트 5A가 가장 우수한 흡착 성능을 보여주었다. Direct Air Capture (DAC) technology using reusable energy is a plausible process to capture CO₂ from non-point sources. In this paper, adsorption and desorption were repeatedly tested using low concentration CO₂. Three types of adsorbents were examined in cyclic CO₂ adsorption and thermal regeneration. Adsorption capacities of zeolite 5A, zeolite 13X and activated carbon were 21 mg/g, 12 mg/g and 6 mg/g, respectively. Zeolite 5A shows the highest adsorption capacities after cyclic thermal regeneration.
박일건(Il Gun Park),홍민선(Min Sun Hong),김범석(Beom Seok Kim),김흥래(Heung Lea Kim) 大韓環境工學會 2014 대한환경공학회지 Vol.36 No.3
본 논문에서는 저농도 CO₂ 조건에서 알카놀아민 흡수제 별 CO₂ 흡수 특성을 도출하였다. 단일흡수제의 경우 MEA농도가 1 wt%, 2 wt%, 3 wt% 증가 시 CO₂ 흡수량은 0.34 mol-CO₂/mol-absorbent, 0.32 mol-CO₂/mol-absorbent, 0.30 mol-CO₂/mol-absorbent로 감소하였고, AMP 농도가 1 wt%, 2 wt%, 3 wt% 증가 시 CO₂ 흡수량은 0.32 mol-CO₂/mol-absorbent, 0.30 mol-CO₂/mol-absorbent, 0.28 mol-CO₂/mol-absorbent로 감소하였다. 혼합흡수제의 경우 MEA 0.5 wt%와 AMP 0.5 wt%을 혼합했을 때0.52 mol-CO₂/mol-absorbent로 최대치를 나타냈다. In this paper, absorption and reaction characteristics of low CO₂ and alkanolamines were investigated. As MEA concentrations increase 1, 2 and 3 wt%, CO₂ loadings decrease 0.34 mol-CO₂/mol-absorbent, 0.32 mol-CO₂/mol-absorbent and 0.3mol-CO₂/mol-absorbent, respectively. Also, CO₂ loadings decrease from 0.32 mol-CO₂/mol-absorbent, 0.30 mol-CO₂/mol-absorbent and 0.28 mol-CO₂/mol-absorbent as AMP concentrations increase 1, 2 and 3 wt%. Experimental results with blending solutions show that CO₂ loading was the highest, 0.52 mol-CO₂/mol-absorbent, when 0.5 wt% MEA and 0.5 wt% AMP were blended.
박일건(Il-Gun Park),박형준(Hyung-June Park),이준형(June-Hyung Lee),김흥래(Heung-Rae Kim),이주열(Ju-Yeol Lee) 한국응용과학기술학회 (구.한국유화학회) 2020 한국응용과학기술학회지 Vol.37 No.2
본 연구에서는 주류공장 내 고농도 CO₂ 제거 및 포집을 위해 L-alanine 흡수제를 적용하여 CO₂ 흡수, 탈리 효율을 평가 후 재생 성능을 확인하였다. 탈리공정의 효율적인 처리를 평가하기 위해 실험실 규모에서 Hot plate, Steam 두가지 탈리 방법을 비교하였으며 Hot plate는 약 10%, Steam의 경우 약 60%의 재생효율을 확인하였다. 따라서 주류공장 내 100m 3 /min 실증화 규모에 Steam-Tower 탈리공정을 적용하여 최적조건을 평가한 결과 탈리 유량 4L/min 이하, Steam 온도 160℃ 이상, 탈리효율 85.5%로 확인할 수 있었다. In this study, amino acid salt absorbents were applied to remove and capture high concentrations of CO₂ in liquor factories and regeneration performance was confirmed. In order to evaluate the effective treatment of the desorption process, two methods(Hot plate and Steam) were compared at the laboratory scale. As a result, hot plate and Steam. Hot plate methods regeneration efficiency was about 10% and Steam methods was about 60%. The Steam-Tower condition was evaluated by installing a 100m 3 /min flow rate scrubber absorption system in the liquor factory. As a result, it was established that the absorbent flow rate was below 4L/min and the steam temperature was above 160℃. Finally regeneration performance was confirmed as 85.5%.
가스엔진 성능개선을 통한 합성가스 에너지화 적합성 분석
박일건(Il Gun Park),김상태(Sang Tae Kim),박영식(Yeong Sik Park),노귀성(Gwi Sung Noh) 한국에너지기후변화학회 2018 에너지기후변화학회지 Vol.13 No.1
The study conducted a gas engine performance assessment for the energy of synthetic gas. By evaluating engine output and thermal efficiency according to increase of access air ratio in the 1800 rpm conditions, access air ratio (λ) 1.4 represented the engine output 34 kWm. As access air ratio increased from 1 to 1.6, thermal efficiency decreased overall. In the engine output 34 kWm conditions, thermal efficiency increased from 34.2% to 38.1% when access air ratio increased from 1 to 1.4. The concentration of NOx was analyzed in 6.62 ppm and 6.06 ppm and showed a tendency to decrease.