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首页> 外文会议>14th international conference amp; exhibition on liquefied natural gas (LNG 14) >LARGE CAPACITY LNG PLANT DEVELOPMENT
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LARGE CAPACITY LNG PLANT DEVELOPMENT

机译：大型液化天然气厂开发

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The latest generation of Shell-designed C3MR-based LNG trains, that are underrnconstruction or in operation, have a design capacity of around 4.2-4.5 Mtpa, which is the largest train capacity built so far. The introduction of Shell’s DMR technology,rnparticularly in combination with the GameChangerTM concept, has significantly increased the potential for capacity growth and has resulted in very cost competitive designs in the 5-6 Mtpa range. Current market growth and the availability of large gas reserves, however, is pushing designers to look at even larger capacity trains since lowest unit cost continues to be a key value driver.rnAgainst this background, Shell has developed a further enhancement of a large LNG train concept based on its efficient DMR technology: the Parallel Mixed RefrigerantTM (PMR) process. The process consists of a single pre-cool cycle followed by two parallel liquefaction cycles, the compressors of which are driven by three GE Frame 7 gas turbines. The resultant LNG train production capacity is up to 8 Mtpa, and the associated specific cost will be significantly lower than current benchmark values. Added benefits of the process are the high availability, and the potential for phased implementation.rnThis paper describes the concept as developed, covering process and compressor lineups and performance in terms of cost and efficiency. Further, it includes a comparison with alternative designs in the 4-6 Mtpa range, highlighting the strengths and weaknesses of the various options.
机译：壳牌公司设计的，基于C3MR的最新一代LNG火车正在建设中或运营中，其设计能力约为4.2-4.5 Mtpa，这是迄今为止建造的最大火车能力。壳牌DMR技术的引入，特别是与GameChangerTM概念的结合，大大提高了容量增长的潜力，并导致了5-6 Mtpa范围内极具成本竞争力的设计。然而，当前的市场增长和大量天然气储备的存在，正促使设计者考虑使用更大容量的列车，因为最低的单位成本仍然是关键的价值驱动力。rn在这种背景下，壳牌开发了对大型液化天然气列车的进一步改进。基于高效DMR技术的概念：并行混合制冷剂（PMR）工艺。该过程由一个预冷循环和两个平行的液化循环组成，其中的压缩机由三台GE Frame 7燃气轮机驱动。由此产生的液化天然气火车产能高达8 Mtpa，相关的特定成本将大大低于当前的基准值。该过程的附加好处是高可用性和分阶段实施的潜力。本文描述了已开发的概念，涵盖了过程和压缩机的阵容以及性能和成本方面的性能。此外，它还与4-6 Mtpa范围内的替代设计进行了比较，突出了各种选择的优点和缺点。

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