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Evaluation of the PRICO liquefaction process using exergy-based methods

机译:使用基于热能的方法评估PRICO液化过程

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The PRICO process is a single mixed-refrigerant process used for small-scale LNG plants, including offshore terminals. The working fluid (refrigerant) is a mixture of methane, ethane, butane and nitrogen. The behavior of the mixture in processes such as cooling, heating, compression, evaporation and condensation depends on its composition and on the part of the chemical constituents of the mixture that are in the gas and liquid phases. The state-of-the art for the evaluation and optimization of the PRICO process is discussed. Exergy-based analyses, i.e. exergetic, exergoeconomic and exergoenvironmental analyses, are applied to the evaluation of the PRICO liquefaction process of natural gas. The purpose of the paper is to identify options for improving the PRICO process and to demonstrate the application of exergy-based methods to the improvement of an LNG plant. The perspectives from the thermodynamic, economic and environmental impact points of view are discussed. (C) 2015 Elsevier B.V. All rights reserved.
机译:PRICO工艺是用于小型液化天然气工厂(包括海上码头)的单一混合制冷剂工艺。工作流体(制冷剂)是甲烷,乙烷,丁烷和氮气的混合物。混合物在冷却,加热,压缩,蒸发和冷凝等过程中的行为取决于混合物的组成以及气相和液相中混合物化学成分的一部分。讨论了PRICO过程评估和优化的最新技术。基于能值的分析,即,能效,能经济和能环境分析,均用于评估PRICO天然气液化过程。本文的目的是确定改进PRICO工艺的方案,并证明基于火用能量的方法在LNG工厂改进中的应用。从热力学,经济和环境影响的角度讨论了这些观点。 (C)2015 Elsevier B.V.保留所有权利。

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