• Title/Summary/Keyword: IGCC

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Properties of Cement Mortar Using CGS as Mixed Fine Aggregate (CGS를 잔골재로 혼합 사용하는 모르타르의 공학적 특성)

  • Han, Jun Hui;Lee, Young Jun;Hyun, Seung Yong;Park, Kyung Taek;Han, Min Cheol;Han, Cheon Goo
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2018.05a
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    • pp.138-139
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    • 2018
  • This study is a basic review of the basic characteristics of mortar as a result of the use of concrete as a fine aggregate for CGS(coal gasification slag) generated from the IGCC(integrated gasification combined cycle). The analysis shows that CGS and crushed sand + seal sand mix is the best combination of CGS combined with about 75 % of CGS based on the effects of promoting liquidity and strength. This is expected to be a positive factor in securing the strength and flexibility of concrete given the optimal mix of CGS, and may also contribute to the improvement of quality.

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Engineering Properties of Concrete Mock-up Using Coal Gasification Slag as Fine Aggregate. (석탄가스화 발전슬래그를 잔골재로 사용한 콘크리트 Mock-up 부재의 공학적 특성)

  • Han, Jun-Hui;Lee, Young-Jun;Hyun, Seung-Yong;Han, Min-Cheol;Yoon, Ki-Won;Han, Cheon-Goo
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2018.11a
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    • pp.159-160
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    • 2018
  • In this study, the characteristics of the Mock-up test were reviewed to analyze the applicability of the coal gasification slag (CGS) from the integrated gasification combination Cycle (IGCC) to the concrete fine aggregate. The analysis shows that CGS and crushed sand mix is the best combination of CGS combined with about 50 % of CGS based on the effects of promoting liquidity and strength. This is expected to be a positive factor in securing the strength and flexibility of concrete given the optimal mix of CGS, and may also contribute to the improvement of quality.

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Effect of Using Coal Gasification Slag as Fine Aggregate on Field Applicability of the Concrete through Mock-up Test (Mock up test를 통한 석탄가스화 발전슬래그를 잔골재로 사용한 콘크리트의 현장적용 가능성 분석)

  • Han, Jun Hui;Lee, Young Jun;Hyun, Seung Yong;Han, Min Cheol;Yoon, Ki Won;Han, Cheon Goo
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2018.11a
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    • pp.21-22
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    • 2018
  • In this study, the characteristics of the Mock-up test were reviewed to analyze the applicability of the coal gasification slag (CGS) from the integrated gasification combination Cycle (IGCC) to the concrete fine aggregate. The analysis shows that CGS and crushed sand mix is the best combination of CGS combined with about 50 % of CGS based on the effects of promoting liquidity and strength. This is expected to be a positive factor in securing the strength and flexibility of concrete given the optimal mix of CGS, and may also contribute to the improvement of quality.

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A Combustion Instability Analysis of a Model Gas Turbine Combustor by the Transfer Matrix Method

  • Cha, Dong-Jin;Kim, Jay-H.;Joo, Yong-Jin
    • Proceedings of the KSME Conference
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    • 2008.11b
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    • pp.2946-2951
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    • 2008
  • Combustion instability is a major issue in design of gas turbine combustors for efficient operation with low emissions. Combustion instability is induced by the interaction of the unsteady heat release of the combustion process and the change in the acoustic pressure in the combustion chamber. In an effort to develop a technique to predict self-excited combustion instability of gas turbine combustors, a new stability analysis method based on the transfer matrix method is developed. The method views the combustion system as a one-dimensional acoustic system with a side branch and describes the heat source as the input to the system. This approach makes it possible to use the advantages of not only the transfer matrix method but also well-established classic control theories. The approach is applied to a simple gas turbine combustion system to demonstrate the validity and effectiveness of the approach.

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The Calculation Method of Coal Pyrolysis Products Depending on the Coal Rank (탄종별 열분해 생성물의 조성 계산방법)

  • Pak, Ho-Young;Seo, Sang-Il
    • Transactions of the Korean hydrogen and new energy society
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    • v.21 no.5
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    • pp.442-451
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    • 2010
  • This paper describes the calculation method to obtain the product composition of coal pyrolysis at high pressure and high temperature. The products of coal pyrolysis should be determined for the coal gasifier simulation, and this is the first step of the coal gasifier simulation. The pyrolysis product distribution greatly affects the coal gasifier efficiency such as carbon conversion, cold gas efficiency and the syngas composition at the outlet of the gasifier. The present calculation method is based on the coal ultimate/proximate analysis and several correlations among gasifier pressure, coal properties and pyrolysis products. The calculated products for 5 coals have been compared with those from the commercial pyrolysis model.

Preparation & Properties of Ceramic Hot Gas Filters (세라믹 고온가스 필터의 재료 및 물성)

  • 이재춘;신경숙;오승진;최광훈;이동섭;이선희;홍민선
    • Proceedings of the Korea Society for Energy Engineering kosee Conference
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    • 1994.11a
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    • pp.37-42
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    • 1994
  • 소각로, 각종 산업시설 및 IGCC, PBFC등의 고온 고압 발전에서 배출되는 고온연소가스 중에 포함된 먼지를 제거할 목적으로 세라믹 고온가스 필터가 전세계적으로 개발중에 있다. (1,2) 성능이 우수한 세라믹 가스여과체의 필수조건으로써 \circled1높은 포집효율, 낮은 통기성, \circled2높은 기계적 강도 및 내부식성 등을 들 수 있다. 현재 국내.외에서 상용화되거나, 연구, 개발중인 세라믹 가스필터 재료의 조성으로써, \circled1단일 산화물계, \circled2산화물-산화물 복합계, \circled3산화물-비산화물계, \circled4비산화물계 등으로 분류할수 있다. (표1 참조)

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Proposed Engineering Packages for the Conceptual Design of IGCC Plant (석탄가스화 복합발전 플랜트 개념설계용 Engineering Packages 선정)

  • Lee, Chan;Yun, Yong-Seung;Lee, Jin-Wook;Kim, Hyung-Taek;Chung, Kun-Mo
    • Journal of Energy Engineering
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    • v.4 no.1
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    • pp.52-58
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    • 1995
  • 석탄가스화 복합발전 플랜트의 시스템설계를 위한 engineering package의 체계 및 방법론에 대해 소개하였다. Engineering package는 플랜트 전체 개념설계 과정과 주요 공정을 구성하는 요소에 대한 설계/해석/시험 과정으로 나누어 진다. 개념설계과정은 설계목적과 제한조건을 충족시키도록 플랜트구성 설계, 정적/동적 시뮬레이숀, 요소별 설계사양 결정 및 Data Base Management System으로 이루어지며, 개념설계 과정의 한부분인 주요요소의 설계는 1차원 성능해석, 2/3차원 열유체해석 및 실험 그리고 구조, 진동 해석 등으로 구성되는 반복적 과정이다. 그러므로, 본 연구에서는 이러한 설계체계들의 개발전략을 설명하고, 현재 이루어진 추진결과에 대해 설명하였다.

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A Study on gasification characteristics of Indonesia Adaro Subbituminous Coal (PDTF를 이용한 인도네시아 Adaro탄의 석탄가스화 특성 실험 연구)

  • 고경호;정재화;안달홍
    • Proceedings of the Korea Society for Energy Engineering kosee Conference
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    • 1999.05a
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    • pp.17-21
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    • 1999
  • 석탄가스화기는 IGCC의 핵심으로서 석탄을 고온에서 열분해 연소 및 가스화하여 연료가스인 저/중열량 가스(CO,H$_2$)로 전환하는 장치이며, Texaco,Destec 및 Shell 등 분류층 가스화기가 발전용으로서 개발중에 있다. 전력연구원에서는 가압분류층 가스화기(Pressured Drop Tube Furnance)를 이용하여 석탄의 가스화 특성을 연구하고 있다. 석탄가스화 공정은 탄종과 운전조건에 따라 그 반응 특성의 편차가 매우 심하고 가스화 특성 실험시 탄종이 자국위주로 되어 있어 우리나라에 많이 수입되는 석탄에 대한 가스화특성에 대한 정보가 많지 않다. 따라서 본 연구는 상용가스화기의 운전조건을 모사한 분위기하에서 석탄가스화 특성을 결정하는 것이 목적이며, Adaro탄을 대상으로 15기압 가압하에서 반응온도 140$0^{\circ}C$, 산소/석탄비 0~l.5, 석탄입자 45~63$mu extrm{m}$, 그리고 석탄 공급율은 6g/min으로 실험조건을 주어 산소/석탄비 변화시 탄소전환율 및 냉가스효율에 대한 석탄가스화 반응 특성을 평가하였다.(중략)

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Effects of Gasifier Diameter on the High Pressure Gasification Performance (가스화기 직경 변화에 따른 고압가스화 운전특성)

  • 유영돈;정석우;김원배
    • Proceedings of the Korea Society for Energy Engineering kosee Conference
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    • 1999.05a
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    • pp.85-88
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    • 1999
  • 석탄가스화 복합발전(IGCC, Integrated Gasification Combined Cycle)은 고효율, 청정 전력 생산 기술로 차세대 석탄이용 발전 기술의 대안으로 제시되고 있다. 기존 석탄화력발전소의 발전 효율인 36-38%보다 적어도 2-6% 우수한 효율을 나타내고 있으며 21세기 석탄 이용시 적용될 환경 규제치를 가장 현실적으로 만족시킬 수 있는 차세대 석탄화력발전 시스템으로 평가받고 있다. 고청정 환경성의 측면에서 석탄가스화 복합발전설비는 기존의 유연탄 화력발전 방식에 비해서 SOx, NOx 및 분진 등의 배출량을 크게 감소시킬 수 있을 뿐만 아니라 재(ash)를 분진형태가 아닌 용융된 후 엉긴 슬랙형태로 수거하므로 환경적으로 안전하며, 슬랙과 탈황공정에서 만들어지는 황원소를 회수하여 경제성 있는 부산물로 활용할 수 있다는 장점이 있다.(중략)

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Reduction of Hydration heat of FA concrete using Coal Gasification Slag for Mixed Fine Aggregate (석탄 가스화 용융 슬래그를 혼합 잔골재로 사용한 FA 치환 콘크리트의 수화열 저감)

  • Han, Jun-Hui;Lee, Young-Jun;Choi, Il-Kyung;Kim, Jung;Han, Min-Cheol;Han, Cheon-Goo
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2019.11a
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    • pp.79-80
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    • 2019
  • This study was intended to examine the possibility of reducing hydration heat by FA substitution and combination of slag (CGS) from coal gasification power generation (IGCC) with mixed aggregate for concrete. The analysis results showed good results if liquidity increases as the ratio of CGS increases, air volume decreases, and compressive strength is mixed up to 25% in the residual aggregate. The results showed that the heat of hydration was reduced compared to plain due to the boron content of CGS as the CGS substitution rate increased, but it was larger due to the combination with FA substitution. It was found that the heat of hydration was reduced.

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