• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.23 no.5
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• pp.50-57
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• 2009

The Kyoto Protocol finally entered into force in 2008. In this respect, it is imperative to explore different options to reduce greenhouse gas emissions for developing countries under the framework of the Kyoto Protocol. One of the main sources of $CO_2$ gas emission is fossil fueled power plants, thereby emission reduction could be achieved by substituting fossil fuel by non-fossil fuel sources on electric power generation sector. This paper presents the method for evaluating the effectiveness of emissions trading by fuel mix change. The cost of Fuel mix is formulated considering the economic effects of emission trading in electricity market. And the optimal fuel mix is proposed under the given emission constraints.

• 전기의세계
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• v.28 no.10
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• pp.3-8
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• 1979

정확하게 예측할 수는 없지만 현상태대로 나간다면 적어도 20년 후에는 석유생산의 피이크를 맞이하고 30년후에는 고갈될 것이라고 내다보는 전문가가 많다. 그렇다면 우리는 하루라도 빨리 석유를 대신할 수 있는 신에너지원을 찾아야만 할 것이다. 우리가 사용하고 있는 에너지는 크게 나누어 전기와 연료의 두가지로 된다. 전기에 대해서는 새삼스럽게 이야기 할것 없고 연료라는 에너지는 자동차를 달리게 하고 공장을 움직이고 빌딩의 온방에 쓰이는 등 이것역시 문명사회에 불가결한 것이다. 이중 문제가 되고 있는 것이 석유에 의한 발전 곧 확력발전부문의 전망디다. 한편 연료에 대해서는 종래 주종을 이루어왔던 석유를 대신해서 석탄의 액화, 가스화 물의 분해에 의해서 만들어지는 수소연료 등이 생각되고 있는데 과연 고갈된지 않는 새로운 에너지로서는 어떤 것이 있는가 또 현재 이들이 어느정도 개발되고 있는가를 알기쉽게 2-3회로 간추려서 소개해 보기로 한다.

• 전기의세계
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• v.28 no.9
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• pp.30-34
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• 1979

정확하게 예측할 수는 없지만 현상태대로 나간다면 적어도 20년 후에는 석유생산의 피이크를 맞이하고 30년후에는 고갈될 것이라고 내다보는 전문가가 많다. 그렇다면 우리는 하루라도 빨리 석유를 대신할 수 있는 신에너지원을 찾아야만 할 것이다. 우리가 사용하고 있는 에너지는 크게 나누어 전기와 연료의 두가지로 된다. 전기에 대해서는 새삼스럽게 이야기 할것 없고 연료라는 에너지는 자동차를 달리게 하고 공장을 움직이고 빌딩의 온방에 쓰이는 등 이것역시 문명사회에 불가결한 것이다. 이중 문제가 되고 있는 것이 석유에 의한 발전 곧 확력발전부문의 전망디다. 한편 연료에 대해서는 종래 주종을 이루어왔던 석유를 대신해서 석탄의 액화, 가스화 물의 분해에 의해서 만들어지는 수소연료 등이 생각되고 있는데 과연 고갈된지 않는 새로운 에너지로서는 어떤 것이 있는가 또 현재 이들이 어느정도 개발되고 있는가를 알기쉽게 2-3회로 간추려서 소개해 보기로 한다.

• 한국신재생에너지학회:학술대회논문집
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• 2010.06a
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• pp.112.1-112.1
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• 2010

To develop domestic IGCC gasification technology, a gasification test bed with a capacity of 20 tons/day has been designed. The main components of the test bed designed are a coal pulverizing and feeding facility, a gasifier, a syngas cooler, a gas treatment unit, oxygen and nitrogen tanks, and flare stack. For wide applications to the development of advanced coal gasification technology, many special functions have been given to it such as syngas recirculation, char recirculation, and multiple stage gasification. The test bed will be used for testing the characteristics of various types of coals, deriving optimum conditions for efficient gasifier operation and trouble shooting for the Korea IGCC demonstration plant. It will also be applied as a useful tool to develop scale-up design technology of IGCC and proceed to commercialization.

• Transactions of the Korean hydrogen and new energy society
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• v.21 no.5
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• pp.425-434
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• 2010

Integrated gasification combined cycle (IGCC) is an efficient and environment-friendly power generation system which is capable of burning low-ranked coals and other renewable resources such as biofuels, petcokes and residues. In this study some process modeling on a conceptual entrained flow gasifier was conducted using the ASPEN Plus process simulator. This model is composed of three major steps; initial coal pyrolysis, combustion of volatile components, and gasification of char particles. One of the purposes of this study is to develop an effective and versatile simulation model applicable to numerous configurations of coal gasification systems. Our model does not depend on the hypothesis of chemical equilibrium as it can trace the exact reaction kinetics and incorporate the residence time calculation of solid particles in the reactors. Comparisons with previously reported models and experimental results also showed that the predictions by our model were pretty reasonable in estimating the products and the conditions of gasification processes. Verification of the accuracy of our model was mainly based upon how closely it predicts the syngas composition in the gasifier outlet. Lastly the effects of change oxygen are studied by sensitivity analysis using the developed model.

• Resources Recycling
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• v.19 no.5
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• pp.31-43
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• 2010

To fabricate porous SiC candle filter for filtration facility of the IGCC system, the candle type filter preforms were fabricated by ramming and vacuum extrusion process. A commercially available ${\alpha}$-SiC powders with various particle size were used as starting raw materials, and $44\;{\mu}m$ mullite, $CaCO_3$ powder were used as non-clay based inorganic sintering additive. The candle typed preforms by ramming process and vacuum extrusion were sintered at $1400^{\circ}C$ for 2h in air atmosphere. The effect of forming method and particle size of filter matrix on porosity, density, strength (flexural and compressive strength) and microstructure of the sintered porous SiC candle tilters were investigated. The sintered porous SiC filters which were fabricated by ramming process have more higher density and strength than extruded filter in same particle size of the matrix, and its maximum density and 3-point bending strength were $2.00\;g/cm^3$ and 45 MPa, respectively. Also, corrosion test of the sintered candle filter specimens by different forming method was performed at $600^{\circ}C$ for 2400h using IGCC syngas atmosphere for estimation of long-term reliability of the candle filter matrix.

• Proceedings of the KSME Conference
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• 2008.11b
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• pp.2952-2952
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• 2008

• Journal of Technology Innovation
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• v.32 no.1
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• pp.1-25
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• 2024

Countries around the world are making active efforts to reduce greenhouse gas emissions. Korea is also pursuing a policy of abolishing aging coal power and converting it to LNG power generation. However, in Korea, gas turbine manufacturing technology has not been localized, so all of it is imported and installed from overseas manufacturers. Therefore, this paper examines the domestic and foreign environment of the gas turbine power generation industry and proposes a strategy to develop and expand the supply of Korean gas turbine technology by applying the PEST-SWOT-AHP methodology. As a result of the research, the strategy to develop and expand the supply of Korean gas turbine technology can be summarized as 1) strengthening the role of power generation public enterprises to develop and promote commercialization of gas turbine technology, 2) expanding the proportion of LNG power generation to reduce greenhouse gases, 3) the government's active efforts to create an ecosystem for the gas turbine industry, and 4) forming a public consensus on the construction of LNG power plants.

• Transactions of the Korean hydrogen and new energy society
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• v.21 no.5
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• pp.470-477
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• 2010

The IGCC (Integrated gasification combined cycle) is known for one of the highest efficiency and the lowest emitting coal fueled power generating technologies. As the core technology of this system is the gasifier to make the efficiency and the continuous operation time increase, the research about different coal's gasification has been conducted. Our research group had set-up the coal gasifier for the pilot test to study the effect of different coals-Shenhua and Adaro coal- on gasification characteristics. Gasification conditions like temperature and pressure were controlled at a fixed condition and coal feed rate was also controlled 30 kg/h to retain the constant experimental condition. Through this study we found effects of coal composition and $O_2$/coal ratio on the cold gas efficiency, carbon conversion rate. The compounds of coal like carbon and ash make the performance of gasifier change. And carbon conversion rate was decreased with reduced $O_2$/coal ratio. The optical $O_2$/coal ratio is 0.8 for the highest cold gas efficiency approximately. At those operating conditions, the higher coal has the C/H ratio, the lower syn-gas has the $H_2$/CO ratio.

• Resources Recycling
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• v.25 no.5
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• pp.14-27
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• 2016

Theoretical reviews of integrated gasification combined cycle one of the clean coal technologies and trends in the study and technology development for high temperature desulfurization sorbents were investigated. Reactivity, durability and abrasion resistance is an important key for development of high temperature desulfurization sorbents, the kind of things include calcium, zinc, manganese, iron and copper-based sorbents. Current status of high temperature desulfurization sorbents, manufacturing techniques of zinc-based sorbent in advanced countries has commercialized. In case of Korea, various research studies are underway to commercialize the Zn and non Zn-based high temperature desulfurization sorbents to cheaper and superior capability using various supports.