ルワイスLNGにおける電化液化による低排出LNG生産

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

🔬研究者:電化液化の排出削減ポテンシャルとScope 1/2・ライフサイクル分離の方法論的枠組みを参照できる。

🏢実務担当者:LNG調達・自社施設の電化検討やScope 1/2開示、サプライヤー排出評価の設計に活用できる。

🏛政策担当者:低排出LNGの定義やMRV要件、電化インフラ支援策の検討に示唆を与える。

Liquefied natural gas (LNG) production requires substantial refrigeration duty, making liquefaction one of the principal energy-consuming and greenhouse gas-emitting stages of the LNG supply chain. LNG facilities have historically employed several energy architectures, including direct gas-turbine-driven compressors, steam-turbine-driven compressors supplied through fuel-fired steam systems, captive power generation and hybrid utility configurations. Although these arrangements have supported reliable commercial-scale production, they remain dependent on onsite fuel combustion and associated energy-conversion losses. This paper examines the transition from combustion-based LNG energy systems to clean-power electrified liquefaction through the case study of Ruwais LNG, a two-train development with a combined production capacity of 9.6 million tonnes per annum, located in Al Ruwais Industrial City, Abu Dhabi, United Arab Emirates. Based on publicly available information, the project employs electric-driven refrigeration systems and is designed to operate using clean electricity. Publicly available references identify Ruwais LNG as a clean-power LNG development comprising two electric-drive liquefaction trains [29-32]. The assessment compares the energy-conversion, emissions and operational characteristics of combustion-based and clean-power electrified LNG architectures. Electrification restructures the facility energy system by reducing the largest continuous combustion requirement associated with liquefaction, separating refrigeration performance from onsite fuel conversion and supplying compressor shaft power through electricity with verified clean-energy attributes. Published studies indicate that refrigeration compression and associated power systems account for a substantial proportion of operational emissions in conventional LNG facilities, and that electrified liquefaction supplied by low-emissions electricity can deliver greenhouse gas reductions of more than 50% relative to conventional configurations under comparable operating conditions and assumptions [5,17-20]. Residual emissions from flaring, fugitive releases, emergency equipment and non-routine events remain within the facility inventory. The paper introduces a three-level classification comprising driver electrification, facility electrification and clean-power electrification. It also establishes a clearly bounded framework separating liquefaction-driver Scope 1 abatement, total facility Scope 1 emissions, location-based and market-based Scope 2 emissions, and lifecycle LNG emissions. For ADNOC Gas, the project illustrates the potential to combine reduced liquefaction-related emissions with commercial-scale LNG capacity, clean-power integration and robust carbon-accounting practices. For the global LNG industry, the case provides a transferable framework integrating process engineering, electrical performance, environmental-attribute management and greenhouse gas monitoring, reporting and verification.

• semanticscholar https://doi.org/10.2118/235367-msfirst seen 2026-11-05 05:42:50 · last seen 2026-11-06 05:17:32