CO2 해양격리시스템의 기술·경제적 가능성평가

박세헌,권문상,오위영 한국해양과학기술원 2005 Ocean and Polar Research Vol.27 No.4

The CO2 storage in geologic and oceanic reservoirs is considered to be one of the carbon management strategies for responding to global climate change. Ocean carbon sequestration is purposeful storage acceleration into the ocean of large amounts of carbon that would accumulate in the atmosphere and naturally enter the ocean over a longer timespan. Some technologies for CO2 ocean sequestrations have been developed as a nation project. However, CO2 ocean sequestrations are attractive because they have the advantage of vast capacity sequestration far away from industrial areas, and offer easier monitoring whereas less economic advantage has been indicated as one of the key barriers compared with CO2 geosphere sequestration, which is produced as a byproduct. In this paper, a conceptual design for CO2 ocean sequestration is introduced, and the preliminary examination is described. As a result, the CO2 price, US$ 24/t shows far away from the economics. The causes come from the expensive CO2 recovery cost and the low CO2 price. The expensive CO2 recovery cost is because too much electricity and water are consumed. In order to look for an economic balance point for CO2 ocean sequestration, NPV=0, it is increases the CO2 price. Finally 60.4$ per ton is found to be the balance price.

심해저 망간단괴 개발사업의 국제기술 동향 분석 및 향후 개발 전망

박세헌,박성욱,강길모 한국해양과학기술원 2005 Ocean and Polar Research Vol.27 No.4

The development of manganese nodule mining technology is very important in order to secure a long-term and stable supply of rare strategic metals. In the twenty years following the R&D activities with the international consortia in the 1970s, studies on mining technologies have been carried out by several national projects in Korea. The current metal prices such as copper, nickel, cobalt, and manganese have been drastically changed since 2002. Rapid economic growth of Asian countries, especially China, have induced the situation. And the possibility of copper shortage is looming just around the corner. Because of the imbalance between production and consumption, copper is fundamentally the most threatened metal in the future in terms of potential metal shortage. Manganese nodules contain a considerable percentage of copper as the future metal resource. Therefore, it is necessary to concentrate our efforts on developing these resources. This paper introduces our evaluation of R&D progress for the development of manganese nodules. The issue and role of manganese nodules during the difficult period of a potential future metal shortage period is discussed and its prospect outlined. Also, this paper tried to emphasize the necessity of continuous R&D efforts for the commercial development of such mineral resources.

해저열수광상 상업개발을 위한 국제동향분석과 국가대응전략

박세헌,양희철,이문숙 한국해양과학기술원 2010 Ocean and Polar Research Vol.32 No.4

Hydrothermal deposits on deep-sea floors are expected to provide potential metal resources for future demands. Korea was recently granted a prospecting licence to undertake exploration for hydrothermal metal deposits in the exclusive economic zone (EEZ) of the Kingdom of Tonga in the Pacific Ocean. The Korean Deep Seabed Mining Group (KDSMG), which consists of four Korean companies involved in marine technologies, oil and gas shipping, and smelter industries, has conducted research to evaluate the region’s resource potential in cooperation with the Ministry of Land, Transport and Maritime Affairs (MLTM) of Korea. Here we present and reflect on the exploration results of these companies and their strategic plans. We also evaluate Research and Development (R&D) progress for the commercial development of seafloor hydrothermal deposits. Our own strategies and prospects for the commercial development of this potential resource are also outlined. We do acknowledge that other potentially important information regarding the amount of ore body, the inside structure, and the metal yields have not yet been clarified sufficiently. As such it is necessary to address these problems through experimental R&D and surveys.

CO₂ 해양격리시스템의 기술.경제적 가능성평가

박세헌,오위영,권문상,Park, Se-Hun,Oh, Wee-Yeong,Kwon, Moon-Sang 한국해양과학기술원 2005 Ocean and Polar Research Vol.27 No.4

The $CO_2$ storage in geologic and oceanic reservoirs is considered to be one of the carbon management strategies for responding to global climate change. Ocean carbon sequestration is purposeful storage acceleration into the ocean of large amounts of carbon that would accumulate in the atmosphere and naturally enter the ocean over a longer timespan. Some technologies for $CO_2$ ocean sequestrations have been developed as a nation project. However, $CO_2$ ocean sequestrations are attractive because they have the advantage of vast capacity sequestration far away from industrial areas, and offer easier monitoring whereas less economic advantage has been indicated as one of the key barriers compared with $CO_2$ geosphere sequestration, which is produced as a byproduct. In this paper, a conceptual design for $CO_2$ ocean sequestration is introduced, and the preliminary examination is described. As a result, the $CO_2$ price, US$ 24/t shows far away from the economics. The causes come from the expensive $CO_2$ recovery cost and the low $CO_2$ price. The expensive $CO_2$ recovery cost is because too much electricity and water are consumed. In order to look for an economic balance point for $CO_2$ ocean sequestration, NPV=0, it is increases the $CO_2$ price. Finally 60.4$ per ton is found to be the balance price.

해양바이오수소개발 사업의 상업생산을 위한 예비경제성평가

박세헌,유영돈,강성균 한국해양과학기술원 2016 Ocean and Polar Research Vol.38 No.3

This project sought to conduct an economic feasibility study regarding the commercial production of bio-hydrogen by the marine hyperthermophilic archaeon, Thermococcus onnurineus NA1 using carbon monoxide-containing industrial off-gas. We carried out the economic evaluation of the biohydrogen production process using the raw material of steel mill by-product gas. The process parameter was as follows: H2 production rate was 5.6 L/L/h; the conversion of carbon monoxide was 60.7%. This project established an evaluation criterion for about 10,000 tonne/year. Inflation factors were considered as 3%. The operating costs were recalculated based on prices in 2014. The total investment required for development was covered 30% by capital and 70% by a loan. The operation cost for the 0.5-year test and integration, and the cost for the first three months in the 50% production period were considered as the working capital in the cost estimation. The costs required for the rental of office space, facilities, and other related costs from the construction through to full-scale production periods were considered as continuing expenses. Materials, energy, waste disposal and other charges were considered as the operating cost of the development system. Depreciation, tax, maintenance and repair, insurance, labor, interest rate charges, general and administrative costs, lubrication and miscellaneous expenses were also calculated. The hydrogen price was set at US$ 4.15/kg for the economic evaluation. As a result, the process was considered to be economical with the payback period of 6.3 years, NPV of 18 billion Won and IRR of 26.7%.

해저열수광상 공해지역 광구등록 전략

박세헌,양희철,이문숙 대한조선학회 2011 대한조선학회 학술대회자료집 Vol.2011 No.6

원전 온배수를 활용한 해수자원화 방안 연구

박세헌,김태영,양희철,노충환 대한조선학회 2012 대한조선학회 학술대회자료집 Vol.2012 No.5

원전 온배수를 활용한 해수자원화 방안 연구

박세헌,김태영,양희철,노충환 한국해양환경·에너지학회 2012 한국해양환경공학회 학술대회논문집 Vol.2012 No.5

海洋資料 蒐集에 關한 硏究

박세헌 해군대학 1984 海洋戰略 Vol.- No.32

해양은 점차 그 가치성을 더해 나가고 있음은 해양이 지니고 있는 무한의 자원과 그것을 이용하려는 인간의 의지는 급격한 해양개발을 촉진시켰다. 해양자원 개발에 앞서 해군의 기본임무인 해상교통로 확보뿐만 아니라 바다에서의 모든 활동분야에 필수적인 것을 해양환경 자료인 것이다. 해양의 모든 요소들 즉 해수온도, 염도, 밀도, 수심, 퇴적물 분포 주위 소음 (Ambient Noise), 조류의 이동 등 매우 복잡하고 다양하며 그들 요소 상호간에 동적 작용으로 말미암아 시간적, 공간적 변화가 무쌍하게 된다. 그러므로 해양에서 성공적인 활동을 위해서는 무엇보다도 해양환경에 대한 충분한 연구와 준비가 필요하게 되며 많을 노력을 요구한다. 현재의 한국해군 어느 조직에서도 해양자료를 수집하고 저장 처리하여 필요시 사용자에게 제공해 줄 수 있는 편성도 없으며 하려는 노력도 매우 미흡한 실정이다. 이러한 노력을 위해서는 많은 예산과 인원을 추가로 필요하게 되지만 본 연구에서는 추가 소요가 없이 현재의 자원으로 해양자료 관리체계만 일부 수정하여 타 부서와 유기적 협조체제를 더욱 강화해 나감으로써 부족한 해양자료를 활용할 수 있는 자료의 수집 및 교환, 협조계통을 제시하고 필요한 추가 사항을 미 해군의 해양자료 수집실태와 조직을 제시하면서 연구하였다.

해저열수광상 기술·경제성평가 모델 개발

박세헌,권석재,박성욱 한국해양과학기술원 2006 Ocean and Polar Research Vol.28 No.2

The Kuroko-type seafloor massive sulfide deposits found in the western Pacific have been considered to have potentials for economic recovery of Au, Ag, Cu, Zn, and Pb. In this study, a preliminary model was developed for the technical and economic evaluation of them. The FRSC site on Lau Basin in the Tonga EEZ was selected as a target. In this study, no construction fee for the metallurgical processing subsystem was accounted for. Instead, it was assumed to sell the Cu, Zn, and Pb concentrates to the existing sulfide customer smelter. The low total investment costs for the development make the venture very attractive. However, the result of the economic feasibility evaluation is still less attractive with the mean metal yield of the Kuroko on land. It is considered that commercial mining may be plausible if the richer metal yields are applied to the development. Quantitative information for metal yield is necessary for a more accurate evaluation. However, the important resource potential information regarding the amount of ore body, the inside structure, and the metal yields have not yet been clarified sufficiently. In addition, the flotation of ore body using seawater has not been tested yet. It is necessary to solve these problems through the experimental R&D and a survey.