• Journal of the Korean Institute of Gas
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• v.17 no.2
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• pp.44-49
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• 2013

Due to rapid rise of consuming rate for natural gas, installation and operation of high pressure natural gas pipeline is inevitable for high rate of gas transportation. Accordingly incidents on the underground high pressure natural gas pipeline come from various reasons will lead to massive release of natural gas and gas dispersion in the air. Further, fire and explosion from ignition of released gas may cause large damage. This study is for release rate, dispersion and flash fire of natural gas to establish a safety management system, setting emergency plan and safety distance.

• Proceedings of the Korean Vacuum Society Conference
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• 2013.08a
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• pp.71.2-71.2
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• 2013

천연가스를 화학적 전환에 의해 부가가치를 높이기 위해서는 리포밍에 의해 합성가스(CO/H2)를 경유하는 간접전환경로가 현재로서는 가장 현실적인 방법이라 할 수 있다. 천연가스를 이용한 합성가스 제조기술은 수증기개질법(SRM), 이산화탄소 개질법(CDR, dry reforming), 부분산화법, 촉매 부분 산화법, 자열개질법 등으로 구분되며, 최근에는 각각의 제조방법의 장점을 고려하여 혼합개질법 또는 일련의 리포머 조합 방법이 개발되고 있다. CDR은 촉매 하에서 메탄과 이산화탄소의 직접접촉에 의해 반응이 일어나며, 수소와 일산화탄소의 비가 같은 합성가스가 제조된다. SRM에 비하여 고온에서 반응이 일어나고 전환율이 더 낮으므로 에너지 소비가 상대적으로 높다. 하지만, SRM과 함께 사용하면 합성가스 비율을 F-T합성이나 메탄올 합성에 적절한 비율로 조절이 가능한 장점이 있으며, 온실가스를 저감시킬 수 있는 전환기술로도 각광받고 있다. 본 발표에서는 최근의 CDR을 이용한 가스로부터 합성석유(GTL)와 메탄올을 고효율로 생산하는 기술 개발 동향에 대해서 소개하고자 한다.

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 2001.11a
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• pp.321-326
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• 2001

천연가스 공급설비에 대한 정성적, 정량적 안전성평가가 여러 차례에 걸쳐 수행되어 왔으나 대부분 화학공장이나 원자력발전소, 해외가스설비 등 보수정책이나 사용환경이 다른 일반 신뢰도데이터를 사용으로 평가의 신뢰성 저해를 초래하였다. 천연가스 공급설비에 대한 고장이력을 확인할 수 있는 것 중 하나인 Trouble Memo(T/M)에는 신뢰도 평가에 필요한 대다수의 자료가 존재하나 몇 가지 사항이 미 기재되어 있고, 데이터 정리에 많은 노력이 필요하다.(중략)

• Korean Chemical Engineering Research
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• v.50 no.5
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• pp.890-893
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• 2012

Gas hydrates are solid crystal structures formed by enclathration of gaseous guest species into 3-dimensional lattice structure of hydrogen-bonded water molecules. These compounds can be potentially used as an energy storage/transportation medium because they can hold a large amount of gas in a small volume of the solid phase. In addition, huge amount of natural gas, buried in seabeds or permafrost region in the form of the solid hydrate, is regarded as a future energy source. In this study, synthesized natural gas, whose composition is 90.0 mol% of methane, 7.0 mol% of ethane, and 3.0 mol% of propane, was used to identify formation behaviors of natural gas hydrates for the purpose of applying the gas hydrate to a storage/transportation medium of natural gas. According to the experimental results obtained by means of the solid-state NMR and high-resolution powder XRD methods, it is found that formed natural gas hydrates have crystal structure of the structure-II hydrate, and that methane occupies both small and large cages, while the others only occupy large ones. In addition, both the NMR spectroscopy and the gas chromatograph showed that there exists preferential occupation among the natural gas components during the hydrate formation. Compositional changes after the hydrate formation revealed that the preferential occupation is in order of propane, ethane, and methane (propane is the most preferential guest species when forming natural gas hydrates).

• Journal of Advanced Marine Engineering and Technology
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• v.36 no.6
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• pp.756-761
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• 2012

Natural gas is converted in to LNG by chilling and liquefying the gas to the temperature of $-162^{\circ}C$, when liquefied, the volume of natural gas is reduced to 1/600 of its standard volume. This gives LNG the advantage in transportation. In this study, the effects of the pressure drop of refrigerant and natural gas in the LNG heat exchanger of cryogenic cascade refrigeration cycle were investigated and then the design criteria for the pressure drop of refrigerant and natural gas of the LNG heat exchanger were proposed. The pressure drop of the cascade liquefaction cycle was investigated and simulated using HYSYS software. The simulation results showed that the pressure drop in the LNG heat exchanger is set to 50 kPa considering the increase in the compressor work and COP of cryogenic cascade liquefaction cycle.

• Journal of Energy Engineering
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• v.8
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• pp.74-85
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• 1999

우리 나라는 1970년대에 두 차례에 걸친 석유 파동을 겪으면서 에너지 정책의 중점 방향을 에너지 수요 관리와 안정적 에너지 공급 기반 조성 등으로 삼았다. 특히 에너지의 안정적 공급을 위하여 에너지원의 다원화, 수입선 다변화, 그리고 해외자원 개발 등이 추진되었다. 이러한 에너지 정책의 일환으로 천연가스의 도입이 적극 추진되어, 1983년 8월 한국가스공사가 설립되었으며, 1986년 10월 국내 최초로 액화천연가스(LNG)가 수입되고 다음달부터 공급되기 시작하였다. (중략)

• Journal of the Korean Professional Engineers Association
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• v.12 no.4
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• pp.26-31
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• 1979

The Natural Gas and petroleum have the same Origin, Namely, Ocean bottom deposits of the marine plant, plankton which are subdued to the biological action of the bacterium under the anaerobic circumstance, and changed to the hydrocarbon gas and oils. and such resources are appeared in the aqueous sedimentary rocks in the tertiary. There are three types of gas field, which are oil well gas field, structural gas field and water soluble gas field.

• 비료회보
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• s.573
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• pp.10-21
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• 2005

데이비드 헤이스는 지역의 천연가스 수요의 계속적인 증가 및 국가보조금의 삭감으로 인한 여분 천연가스 원료물질의 부족이 증가하고 있는 추세에 대해 인도네시아 요소 산업이 어떻게 대처하고 있는지에 대하여 보고한다.

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.29 no.3
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• pp.39-46
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• 2000

천연가스를 주연료로 하는 열병합발전소의 일반적인 시스템을 소개하고자 한다.

• Journal of the Korean Institute of Gas
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• v.21 no.5
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• pp.9-15
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• 2017

Natural gas fuel has known to be very promising in terms of abundancy and economic value. Therefore it is widely treated as research topics in a variety field of production, storage and utilization. Natural gas has become one of the major sources for the power generation by using internal combustion engines(ICE). Development of natural gas fuel injection device should be preceded to realize a reliable natural gas fuel supply system for a MW class power generation reciprocating ICE. In this research, an injection valve which consists of solenoid and body part with a moving plate was designed and its dynamic performance was experimented in the engine-like environment. Displacement length and diameter of an armature and diameter of a solenoid coil were tested at former study. In this research the effect of materials of solenoid core, size of main housing inlet and supply gas pressure are examined.