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ENHANCED PROCESS INTEGRATION BETWEEN LNG AND GTP PLANTS

机译:液化天然气和GTP植物之间增强的工艺整合

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摘要

Previous studies have mainly analyzed offsite integration of LNG (Liquefied Natural Gas) and GTP (Gas to Products) plants, including Fischer Tropsch synthesis. This paper will provide a processing alternative, using modifications of conventional LNG technology, to fully integrate total gas feed to a GTP plant, without negatively impacting the overall power requirement or significantly impacting the equipment size of the LNG liquefaction section. This processing alternative also increases the heating value of the LNG and increases Natural Gas Liquid (NGL) recovery while not detrimentally altering GTP plant performance. rnIn this proposed integration scheme, the feed to a conventional LNG plant will be increased and an almost pure methane product, approximately equal to half the feed volume to the LNG, will be sent to a large-scale GTP plant. The NGL production in the LNG plant will approximately double and the heating value of the LNG product will increase because the ethane content (propane and butanes if needed) will also double. The proposed integration is based on modifications to any generic LNG liquefaction technology. rnThe proposed modification would utilize a methane rich stream, from the LNG Train, as fresh feed to the GTP plant. Additional treated fresh feed would then replace the methane rich gas stream volume within the LNG plant.
机译:先前的研究主要分析了液化天然气(LNG)和GTP(天然气到产品)工厂的异地整合,包括费托合成。本文将提供对传统液化天然气技术的改进的一种处理替代方案,以完全集成到GTP工厂的全部天然气,而不会对总功率需求产生负面影响或对液化天然气液化段的设备尺寸产生重大影响。这种处理方法还可以提高液化天然气的发热量,并提高天然气液(NGL)的回收率,同时不会不利地改变GTP工厂的性能。在此拟议的整合方案中,将增加到常规液化天然气工厂的进料,并将几乎纯净的甲烷产品(大约等于到液化天然气进料量的一半)输送到大型GTP工厂。由于乙烷含量(如果需要,丙烷和丁烷)也将增加一倍,因此液化天然气工厂的NGL产量将增加一倍左右,液化天然气产品的热值将增加。提议的集成基于对任何通用LNG液化技术的修改。 rn拟议的修改将利用来自LNG列车的富含甲烷的物流作为GTP工厂的新鲜原料。然后,额外的经过处理的新鲜进料将替代液化天然气工厂中富含甲烷的气流体积。

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