• Journal of the Korean Institute of Gas
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• v.27 no.4
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• pp.110-115
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• 2023

According to the Off-Gas Generation and Use Status Report (2015), Off-gas from the steel industry is estimated to be 80 million tons per year in Korea. If this is purified, large amounts of hydrogen can be produced, so active research and development related to hydrogen purification facilities is underway. In this study, a quantitative risk assessment (QRA) was conducted by analyzing the components of a off-gas based hydrogen purification facility and investigating risk factors. The risk analysis results were determined to be at an acceptable level and will be used as basic data to improve the safety of facilities considering the risks of hydrogen.

• Journal of the Korean Institute of Gas
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• v.10 no.3 s.32
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• pp.60-64
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• 2006

Explosion range and explosion characteristics of by product gas from carbon black manufacturing process were studied. About 75% of the by product gas were composed with water vapour and nitrogen. And the combustible component in the gas were hydrogen, methane, acetylene and carbon mono-oxide. Because of the combustible components in the by product gas there are explosion hazards in the gas handling process. Explosion range of the gas by experiment was from 17.1% to 70.7% and the value has considerable difference with the calculated value from Lechatelier law. Explosion pressure of the gas was $5.4kg/cm^2$ and the average explosion pressure rise rate was $39.2kg/cm^2/s$. Based on the experimental result we can expect that a explosion or fire accident during the handling the gas can make a severe loss, therefore there should be a explosion prevention or protection measures in the gas handling process.

• NICE (News & Information for Chemical Engineers)
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• v.36 no.2
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• pp.191-195
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• 2018

• Journal of the Korean Institute of Gas
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• v.17 no.2
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• pp.50-58
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• 2013

Various process piping usually carries out high flammable and explosible gas under high pressure and high temperature. Due to frequent change of design and structure it becomes more complicated and compactly located. The safety management level is relatively low since it is considered as simply designed component. In this study a safety assessment procedure is proposed for complicated piping system around a mixing drum in which natural gas and by-product gases were mixed. According to ASME code, pipe stress analysis was conducted for determining design margin at some key locations of the piping. These high stress locations can be used as major inspection points for managing the pipe integrity. Sensitivity analysis with outside temperature of the pipe and support constraint condition. Possible effect of hydroen gas to the pipe steel during the previous use of the by-product gas was also discussed.

• 한국전기화학회:학술대회논문집
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• 2004.06a
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• pp.125-127
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• 2004

• Proceedings of the Korea Society for Energy Engineering kosee Conference
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• 2003.05a
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• pp.633-638
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• 2003

현재, 각종 산업공정에서 발생하는 부생가스, 도시폐기물, 폐플라스틱, 바이오매스 등의 미활용 에너지원이나 석탄, 폐유 등을 가스화 혹은 열분해 하여 합성가스를 발생시켜 재활용하려는 연구가 활발히 진행하고 있다. 합성가스는 공업적으로 중요한 에너지원 및 화합물을 제조하는 가장 기초적인 반응가스인데, 합성가스를 제조하는 방법 중 가장 잘 알려진 천연가스 개질반응 이외에도 열분해/가스화 반응공정을 통해 제조되기도 한다.(중략)

• The Safety technology
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• no.193
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• pp.42-46
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• 2014

• Proceedings of the Korea Society for Energy Engineering kosee Conference
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• 1999.11a
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• pp.237-240
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• 1999

철강, 석유화학공업 등 각종 산업에서 발생되는 부생가스, 현재 문제가 되고 있는 도시 폐기물, 폐플라스틱 뿐만 아니라 바이오매스 등 미활용에너지원이나 석탄을 열분해 또는 가스화 하거나 천연가스를 개질하여 만들어진 합성가스를 이용하여 기존의 간접법이 아닌 직접 합성으로 디메틸에테르(dimethyl ether, BME)를 생산하는 기술은 산업체의 생산원가 절감, 에너지절약 및 환경오염 감소 등 일석삼조의 효과를 기대할 수 있다.(중략)

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2002.05a
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• pp.221-224
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• 2002

포항제철소에는 13개의 발전기가 있어 제철소에서 필요로 하는 전력을 자체적으로 945MWH 규모로 공급하고 있다. 발전소에서 사용되는 에너지원은 제철공정에서 부수적으로 발생하는 부생가스(BFG, COG, LDG, CFG)와 외부에서 구매하는 중유, LNG가 있다. 안정적인 전력공급과 비용절감을 위한 발전기 가동계획을 수립하기 위해서는, 조업상황에 따라 변동되는 전력소요량 및 부생가스 발생량을 예측하여 발전기별로 사용될 연료량을 배분하고, 발전기별 효율을 반영한 발전량을 결정하게 된다 이러만 발전기 가동계획 수립을 수작업에 의존하고 있어, 수시로 변화하는 상황에 신속한 대처가 곤란하고, 모든 요소를 고려하기가 어려워 에너지비용을 절감할 수 있는 기회손실의 우려가 있었다. 본 연구에서는 LP 및 NLP를 적응하여 발전기별 연료배분 및 발전량을 결정하는 과정을 자동적으로 수행하는 발전기 가동계획수립 Model을 개발하였다. Data 입·출력용으로 Excel, LP Package는 What's Best, Programming Language는 VBA(Visual Basic for Application)를 활용하였다.

• Journal of Energy Engineering
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• v.25 no.1
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• pp.122-130
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• 2016

This study is a numerical study using commercial simulation program GT-Power on 1.5MW diesel engine for power generation. Performance comparison has done for diesel operation with dual fuel operation for different engine load(50%, 75%, 100%) using the target engine model with additional gas injection system. Effect of using Hi-sene, which is actually being used in island area, instead of diesel was also studied. As a result, under 60% natural gas with diesel condition, BSFC was increased by 32% without modifying system. There was almost no change for natural gas/Hi-sene condition compared with natural gas/diesel condition. Decrease of burned fuel fraction was the main reason of these phenomena. After optimizing system, BSFC was improved by 2%.