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탈황석고를 이용한 광물탄산화 기술의 온실가스 감축 방법론 연구
안진주 한국에너지기후변화학회 2023 에너지기후변화학회지 Vol.18 No.2
Carbon dioxide capture and utilization (CCU) technologies are considered key strategies for achieving carbon neutrality as they can reduce CO2 emissions while producing useful materials. However, the high technical complexityand the intricacies of greenhouse gas (GHG) reduction accounting have posed obstacles to the early adoption and widespread implementation of these technologies into companies. Approved methodologies are essential for companiesto be authorized to perform various GHG reduction activities and to obtain certification for GHG emission reduction within emissions trading schemes, which is crucial for the economic viability of investments. However, these methodologies are still lacking. This study, for the first time, proposes a detailed methodology for mineral carbonation technology that utilizes wet flue gas desulfurization (FGD) byproducts, gypsum, and CO2 from flue gas to produce calcium carbonate. The calcium carbonate can replace limestone, a raw material in wet FGD processes, thereby reducing GHG emissions associated with limestone usage. Given the energy consumption and other GHG emissions associated with mineral carbonation facilities, the development and application of rigorous methodologies are deemed critical for this technology.
안진주,이원제,이종민,임영섭 한국공업화학회 2018 한국공업화학회 연구논문 초록집 Vol.2018 No.1
This study presents a comprehensive design approach to determine optimal equipment size and operating conditions while considering process load variation. We applied the suggested approach to PRICO<sup>®</sup> Single Mixed Refrigerant (SMR) process to take account of the feed gas load reduction owing to depletion of natural gas fields. The suggested approach differs from a traditional one in that it performs design and optimization with several steady-state operation regimes depending on the load variation. The economics of each design approach is evaluated by the economic assessment model that reflects the annual profit under the varying production rate according to the actual production profiles of the gas field wells, Maui and Kapuni in New Zealand. The proposed design approach makes a loss in the compressor equipment cost. However, it reduces the operation cost over a wide range of operations, leading to the overall improvement of economics in a gas well along its lifetime production.
고분자연료전지용 설폰산화 폴리아릴렌에테르설폰 멀티블록공중합체의 합성 및 특성 분석
안진주,최영우,양태현,김창수,배병찬,주현철,김환기,김동민,홍태환 한국수소및신에너지학회 2012 한국수소 및 신에너지학회논문집 Vol.23 No.5
Multi-block sulfonated poly (arylene ether sulfone) (SPES) membranes were synthesized by post-sulfonation and its properties characterized. Two types of oligomers, F-terminated and OH-terminated telechelic oligomers,were synthesized by controlling the feed ratio of dihydroxyl- and difluoro-monomers. Their number of repeating unit (X and Y) was analyzed by GPC and 1H NMR. Copolymerization with F-terminated and OH-terminated telechelic oligomers via nucleophilic aromatic substitution, gave high-molecular-weight multi-block PESs. Each block length was controlled to have different values with X5Y10, X10Y10, X20Y10 and X20Y20. Successful polymerization and its successful sulfonation was confirmed by GPC and 1H NMR. RH dependence of proton conductivity of multi-block SPES membranes was comparable to that of Nafion 212 at high RH conditions.