• 한국수소및신에너지학회논문집
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• 제21권5호
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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.

• 한국가스학회지
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• 제27권1호
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• pp.1-12
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• 2023

석탄가스화는 석탄을 불완전 연소하여 수소와 일산화탄소로 이루어진 합성가스를 생성하는 공정이다. 기 존 석탄 연소와 달리 질소 산화물이나 황 산화물이 배출되지 않고 미세먼지 발생량이 적어 석탄을 청정하게 이용할 수 있으며 합성가스를 통해 부가적인 화학물질을 생산할 수 있다. 석탄가스화는 합성가스 생산방식에 따라 석탄가스화복합화력발전(Integrated Gasification Combined Cycle, IGCC), 플라즈마 석탄가스화, 지하석탄 가스화(Underground Coal Gasification, UCG)로 분류된다. 최근에는 합성가스의 수소를 활용하기 위하여 일산화탄소를 수소로 전환하는 수성가스전환(Water Gas Shift, WGS) 반응기와 이산화탄소를 포집하는 설비를 결합하는 사례가 늘고 있다. 본 연구에서는 석탄가스화와 합성가스를 이용한 수소 생산 방법에 대하여 정리하였으며 현재 진행되고 있는 석탄가스화를 이용한 수소 생산 프로젝트를 조사하였다.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2007년도 춘계학술대회
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• pp.771-774
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• 2007

Integrated Gasification Combined Cycle (IGCC) power plant converts coal to syngas, which is mainly composed with hydrogen and carbon monoxide, by the gasification process and produces electric power by the gas and steam turbine combined cycle power plant. The purpose of this study is to investigate the influence of the syngas to the performance of a gas turbine in a combined cycle power plant. For this purpose, a commercial gas turbine is selected and its performance characteristics are analyzed with syngas. It is found that different heating values of those fuels and chemical compositions in their combustion gases are the causes in the different performance characteristics. Also, Changing of turbine inlet Mass flow lead to change the turbine matching point, in the event the pressure ratio is changed.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2018년도 추계 학술논문 발표대회
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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.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2018년도 추계 학술논문 발표대회
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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.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2018년도 춘계 학술논문 발표대회
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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.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2009년도 추계학술대회 논문집
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• pp.528-532
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• 2009

Integrated Gasification Combined Cycle (IGCC) power plant converts coal to syngas, which is mainly composed with hydrogen and carbon monoxide, by the gasification process and produces electric power by the gas and steam turbine combined cycle power plant. The purpose of this study is to investigate the influence of gasification process to type and structure of gasifier. For this purpose, the performance characteristics of gasification reaction are analyzed with the operation characteristic of pilot-scale 2-stage coal gasifier. It is found that gasification reaction, floating characteristic of melted slag, particle stick of inside of the gasifier, particle stick and deposit of Syngas cooler are the causes in the different performance characteristics.

• 대한건축학회논문집:구조계
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• 제36권1호
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• pp.155-162
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• 2020

The aim of the research is to investigate the fundamental properties and heat of hydration reducing performance of the fly ash incorporated concrete mixture when the coal gas slag (CGS) from integrated gasification combined cycle (IGCC) is used as fine aggregate. From the results of the experiment, the workability was generally increased and the air content was decreased up to one to four percent with increasing the replacing ratio of CGS to fine aggregate. The compressive strength was similar or increased within five percent to the Plain mixture when the CGS was used as a fine aggregate. When the CGS and fly ash were used same time, the heat of hydration reducing performance was improved than single using cases either CGS or fly ash. Based on the results, for the concrete mixture using CSG as a portion of the combined fine aggregate, the general properties were improved and heat of hydration was decreased approximately 16 % when the fly ash was replaced 30 % to cement and the CGS was replaced less than 50 % to fine aggregate.

• 청정기술
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• 제20권3호
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• pp.298-305
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• 2014

석탄에 포함되어 있는 회분은 환경오염을 유발시킬 수 있으며, 고온에서 운전되는 발전 설비에 융착되어 열전달 효율을 저하시키는 문제점을 가지고 있다. 이러한 문제를 해결하기 위해서 알칼리나 산, 또는 유기 용매를 이용하여 석탄 내의 회분을 제거하기 위한 연구와 함께 무회분 석탄을 이용한 석탄화력 발전 및 석탄가스화 복합발전에 대한 타당성 연구가 활발히 진행 중이다. 따라서 본 연구에서는 200 ppm급 무회분 석탄을 석탄가스화 발전에 이용하기 위해서 필요한 가스화기 운전조건을 ASPEN $Plus^{(R)}$ 공정모사의 민감도 해석을 바탕으로 도출하였다. 특히 석탄가스화 공정은 열분해, 휘발분 연소, 촤 가스화 공정으로 나누어 해석을 진행하였으며, 1.5 톤일급 비용융(non-slagging) 가스화기의 크기 및 운전 조건을 반영하여 모델링 하였다.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2007년도 춘계학술대회B
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• pp.3241-3246
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• 2007

Integrated Gasification Combined Cycle (IGCC) power plant converts coal to syngas, which is mainly composed with hydrogen and carbon monoxide, by the gasification process and produces electric power by the gas and steam turbine combined cycle power plant. The purpose of this study is to investigate the influence of the syngas to the performance of a gas turbine in a combined cycle power plant. For this purpose, a commercial gas turbine is selected and its performance characteristics are analyzed with three different fuels, i.e., natural gas ($CH_4$), syngas and hydrogen. It is found that different heating values of those fuels and chemical compositions in their combustion gases are the causes in the different performance characteristics.