http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
이경자 ( Kyung Ja Lee ),이지현 ( Ji Hyun Lee ),곽노상 ( No Sang Kwak ),이인영 ( In Young Lee ),김준한 ( Jun Han Kim ),엄용석 ( Yong Seok Eom ),장경룡 ( Kyung Ryoung Jang ),심재구 ( Jae Goo Shim ),이용택 ( Yong Taek Lee ) 한국화학공학회 2012 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.50 No.2
Amine volatility occurring on the CO2 capture process may result in significant economic losses and environmental impact. In this study, using an volatility measurement apparatus, we measured a amine volatility of various amines including MEA (Monoethanolamine), MDEA (N-Methyldiethanolamine), Pz (Piperazine), AMP (2-Amino-2-methyl-1- propanol), 2-MP (2-Methylpiperazine), DGA (Diglycolamine). For the quantitative analysis of volatility, we analyzed the effects of temperature and CO2 loading using an gas chromatography analysis, The result shows that the amine volatility was increased by increasing Henry`s constant (MDEA<DGA<Pz<2-MP<MEA<AMP). And primary amines such as MEA and AMP were more volatile than MDEA, These results are considered from the difference of molecular structures: MDEA having two hydroxyl groups (-OH) shows less volatile than primary Amine which have only one hydroxyl group (for MEA & AMP) and two hydrophobic alkyl groups (-CH3) (for AMP).
이산화탄소를 활용한 고부가화합물 제조기술의 경제성 평가연구
이지현 ( Ji Hyun Lee ),이동욱 ( Dong Woog Lee ),장세규 ( Jang Se Gyu ),곽노상 ( No Sang Kwak ),이인영 ( In Young Lee ),장경룡 ( Kyung Ryoung Jang ),최종신 ( Jong Shin Choi ),심재구 ( Jae Goo Shim ) 한국화학공학회 2014 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.52 No.3
Economic evaluation of the manufacturing technology of high-value chemicals through the carbonationreaction of carbon dioxide contained in the flue gas was performed, and analysis of the IRR (Internal Rate of Return)and whole profit along the production plan of the final product was conducted. Through a carbonation reaction withsodium hydroxide that is generated from electrolysis and by using carbon dioxide in the combustion gas that is generatedin the power plant, it is possible to get a high value products such as sodium bicarbonate compound and also toreduce the carbon dioxide emission simultaneously. The IRR (Internal Rate of Return) and NPV (Net Present Value)methods were used for the economic evaluation of the process which could handle carbon dioxide of 100 tons per day inthe period of the 20 years of plant operation. The results of economic evaluation showed that the IRR of baseline case oftechnology was 67.2% and the profit that obtained during the whole operation period (20 years) was 346,922 millionwon based on NPV value. When considering ETS due to the emissions trading enforcement that will be activated in2015, the NPV was improved to a 6,000 million won. Based on this results, it could be concluded that this CO2 carbonationtechnology is an cost-effective technology option for the reduction of greenhouse gas.
NCCU(Non-Capture CO2 Utilization) 기술의 CO2 감축 잠재량 산정
이지현 ( Ji Hyun Lee ),이동욱 ( Dong Woog Lee ),장세규 ( Jang Se Gyu ),곽노상 ( No-sang Kwak ),이인영 ( In Young Lee ),장경룡 ( Kyung Ryoung Jang ),최종신 ( Jong-shin Choi ),심재구 ( Jae-goo Shim ) 한국화학공학회 2015 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.53 No.5
Estimating potential of CO2 emission reduction of non-capture CO2 utilization (NCCU) technology was evaluated. NCCU is sodium bicarbonate production technology through the carbonation reaction of CO2 contained in the flue gas. For the estimating the CO2 emission reduction, process simulation using process simulator (PRO/II) based on achemical plant which could handle CO2 of 100 tons per day was performed, Also for the estimation of the indirect CO2 reduction, the solvay process which is a conventional technology for the production of sodium carbonate/sodium bicarbonate, was studied. The results of the analysis showed that in case of the solvay process, overall CO2 emission was estimated as 48,862 ton per year based on the energy consumption for the production of NaHCO3 (7.4 GJ/tNaHCO3). While for the NCCU technology, the direct CO2 reduction through the CO2 carbonation was estimated as 36,500 ton per year and the indirect CO2 reduction through the lower energy consumption was 46,885 ton per year which lead to 83,385 ton per year in total. From these results, it could be concluded that sodium bicarbonate production technology through the carbonation reaction of CO2 contained in the flue was energy efficient and could be one of the promising technology for the low CO emission technology.
연소 후 CO2 포집공정이 적용된 500 MWe 석탄화력발전소의 성능 및 경제성평가
이지현 ( Ji Hyun Lee ),김준한 ( Jin Han Kim ),이인영 ( In Young Lee ),장경룡 ( Kyung Ryoung Jang ),심재구 ( Jae Goo Shim ) 한국화학공학회 2011 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.49 No.2
In this study, performance and economic analysis of 500 MWe coal-fired power plant with CO2 capture process was performed. For this purpose, chemical absorption method which is commercially available and most suitable for thermal power plant was studied and a criteria for technical and economic assessment of power plants suggested by IEA Greenhouse Gas R&D Programme was used. And we performed the sensitivity analysis focused on regeneration energy which exceed half of the total capture energy. Based on MEA(Monoethanoleamine) as a main chemical solvent and 3.31 GJ/tonCO2 regeneration energy in the stripper, net power efficiency was reduced from 41.0% (no capture) to 31.6%(with capture) and the cost of CO2 avoided was estimated 43.3 $/tonCO2. And in case of 2.0GJ/tonCO2 regeneration energy, the cost of CO2 avoided was calculated as 36.7 $/tonCO2.
국내 초임계 석탄화력발전소에 연소 후 CO2 포집공정 설치 시 성능 및 경제성 평가
이지현 ( Ji Hyun Lee ),곽노상 ( No Sang Kwak ),이인영 ( In Young Lee ),장경룡 ( Kyung Ryoung Jang ),심재구 ( Jae Goo Shim ) 한국화학공학회 2012 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.50 No.2
In this study, Economic analysis of supercritical coal-fired power plant with CO2 capture process was performed. For this purpose, chemical absorption method using amine solvent, which is commercially available and most suitable for existing thermal power plant, was studied. For the evaluation of the economic analysis of coal-fired power plant with post-combustion CO2 capture process in Korea, energy penalty after CO2 capture was calculated using the power equivalent factor suggested by Bolland et al. And the overnight cost of power plant (or cost of plant construction) and the operation cost reported by the IEA (International Energy Agency) were used. Based on chemical absorption method using a amine solvent and 3.31 GJ/tonCO2 as a regeneration energy in the stripper, the net power efficiency was reduced from 41.0% (without CO2 capture) to 31.6% (with CO2 capture) and the levelized cost of electricity was increased from 45.5 USD/MWh (Reference case, without CO2 capture) to 73.9 USD/MWh (With CO2 capture) and the cost of CO2 avoided was estimated as 41.3 USD/tonCO2.
신 흡수제(KoSol-4)를 적용한 10MW급 CO₂ 포집 Pilot Plant 성능시험
곽노상(No-Sang Kwak),이동욱(Dong Woog Lee),이지현(Ji Hyun Lee),이인영(In Young Lee),장경룡(Kyung Ryoung Jang),심재구(Jae-Goo Shim) 한국에너지기후변화학회 2015 에너지기후변화학회지 Vol.10 No.1
KEPCO 전력연구원에서 개발한 고효율 아민계 습식 CO₂ 흡수제(KoSol-4)를 적용하여 Pilot Plant 성능시험을 수행하였다. 500MW급 석탄화력발전소에서 발생되는 연소 배가스의 1/50을 적용하여 하루 200톤의 CO₂를 처리할 수 있는 연소후 CO₂ 포집기술의 성능을 확인하였으며 또한 국내에서는 유일하게 재생에너지 소비량을 실험적으로 측정함으로써 KoSol-4 흡수제의 성능에 대한 신뢰성 있는 데이터를 제시하고자 하였다. 그리고 흡수탑 인터쿨링 및 린-리치아민 열교환기 효율 향상에 따른 에너지 저감 효과를 테스트하였다. 흡수탑에서의 CO₂ 제거율은 국제에너지기구 산하 온실가스 프로그램(IEA-GHG)에서 제시하는 CO₂ 포집기술 성능평가 기준치(CO₂ 제거율: 90%)를 안정적으로 유지하였다. 또한 흡수제(KoSol-4)의 재생을 위한 스팀 사용량(재생에너지)은 2.8 GJ/tonCO₂이 소비되는 것으로 산출되었는데 이는 기존 상용 흡수제(MEA, Monoethanolamine)의 평균 재생에너지 수준(약 4.0 GJ/tonCO₂) 대비 약 30% 이상 저감된 수치이다. 본 연구를 통해 KEPCO 전력연구원에서 개발한 KoSol-4 흡수제 및 CO₂ 포집 공정의 우수한 CO₂ 포집 성능을 확인할 수 있었고, 향후 본 연구에서 성능이 확인된 고효율 흡수제(KoSol-4)를 실증급 CO₂ 포집플랜트에 적용 할 경우 CO₂ 포집비용을 크게 낮출 수 있을 것으로 기대되었다.
고효율 습식 아민 CO2 흡수제(KoSol-4)를 적용한 Test bed 성능시험
심재구 ( Jae Goo Shim ),이지현 ( Ji Hyun Lee ),곽노상 ( No Sang Kwak ),이인영 ( In Young Lee ),장경룡 ( Kyung Ryoung Jang ),장세규 ( Se Gyu Jang ),이경자 ( Kyung Ja Lee ),한광수 ( Gwang Su Han ),오동훈 ( Dong Hun Oh ) 한국화학공학회 2013 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.51 No.2
Test bed studies with highly efficient amine CO2 solvent (KoSol-4) developed by KEPCO research institute were performed. For the first time in Korea, evaluation of post-combustion CO2 capture technology to capture 2 ton CO2/day from a slipstream of the flue gas from a coal-fired power station was performed. Also the analysis of solvent regeneration energy was conducted to suggest the reliable performance data of the KoSol-4 solvent. For this purpose, we have tested 5 campaigns changing the operating conditions of the solvent flow rate and the stripper pressure. The overall results of these campaigns showed that the CO2 removal rate met the technical guideline (CO2 removal rate: 90%) suggested by IEA-GHG and that the regeneration energy of the KoSol-4 showed about 3.0~3.2 GJ/tCO2 which was, compared to that of the commercial solvent MEA (Monoethanolamine), about 25% reduction of regeneration energy. Based on these results, we could confirm the good performance of the KoSol-4 solvent and the CO2 capture process developed by KEPCO research institute. And also it was expected that the cost of CO2 avoided could be reduced drastically if the KoSol-4 is applied to the commercial scale CO2 capture plant.
곽노상 ( No Sang Kwak ),이지현 ( Ji Hyun Lee ),엄용석 ( Yong Seok Eom ),김준한 ( Jun Han Kim ),이인영 ( In Young Lee ),장경룡 ( Kyung Ryoung Jang ),심재구 ( Jae Goo Shim ) 한국화학공학회 2012 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.50 No.1
반응열량계를 사용하여 1, 2, 3차 아민 수용액과 이산화탄소의 반응열을 각각 측정하였다. 이를 통해 MEA(monoethanolamine, 1차 아민), EAE(2-(ethylamino) ethanol, 2차 아민), MDEA (N-methyldiethanolamine, 3차 아민) 30 wt% 수용액이 40 oC에서 이산화탄소와 반응시 발생하는 반응열을 측정하고 이를 CO2의 loading ratio에 따라 어떻게 변화하는지 평가하였다. 또한, 입체장애 구조를 가지는 AMP(2-amino-2-methyl-1-propanol, 1차 아민), DEA(diethanolamine, 2차 아민), TEA(triethanolamine, 3차 아민) 30 wt% 수용액의 반응열을 각각 측정하여 입체장애 구조가 반응열에 미치는 영향을 살펴보았다. 그 결과, 흡수제의 입체장애 유무와 관계없이 1차 > 2차 > 3차 아민 순으로 반응열이 증가함을 확인하였다. 그리고 입체장애 아민이 동일 차수의 비 입체장애 아민보다 상대적으로 반응열이 낮지만 그 차이는 크지 않음을 확인하였다.