可提高效率及海上适应性的浮式双混合制冷剂天然气液化工艺

发布时间：2018-07-10 03:25

本文选题：DMRLNG-FPSO + 双混合制冷剂　；参考：《天然气工业》2017年05期

【摘要】：浮式天然气液化装置(LNG Floating Production Storage and Offloading Unit,缩写为LNG-FPSO)具有便于迁移、设备可靠、安全性高等优点,但其海上适应性较差。为此,中海石油气电集团有限责任公司技术研发中心研发了一种浮式双混合制冷剂的天然气液化工艺流程,进行了流程模拟并与中国石油大学(华东)合作建造了实验装置;通过利用不同配比的两种混合冷剂实现DMR模块化设计及流程运行参数的优化,提高了LNG-FPSO工艺的效率及海上适应性。同时选择适应于海上复杂工况的设备进行双混合制冷剂流程的实验,并针对压缩机出、入口压力、水冷器温度等关键参数进行误差分析以及控制方案的确定,通过实验确定了流程中实际操作参数,为LNG-FPSO实际生产中的设备选型和运行提供了经验。最后分析了该工艺对原料气温度、压力、流量以及组分含量的敏感性,并给出了该工艺在生产中适应的参数变化范围。结论认为:该工艺可适应于复杂的海况并进行大规模的天然气液化处理。
[Abstract]:The floating production and offloading unit (LNG-FPSO) has the advantages of easy migration, reliable equipment and high safety, but its marine adaptability is poor. For this reason, the technology research and development center of CNODP has developed a natural gas liquefaction process of floating dual refrigerant, has carried on the process simulation and built the experimental device in cooperation with China University of Petroleum (East China). The modularization design of DMR and the optimization of operation parameters of the process are realized by using two kinds of mixed coolant with different ratio, which improves the efficiency and adaptability of LNG-FPSO process. At the same time, the equipment suitable for complex offshore working conditions is selected to carry out the experiment of dual mixing refrigerant flow, and the error analysis and control scheme are made for the key parameters such as compressor exit, inlet pressure, water cooler temperature, etc. The practical operating parameters are determined by experiments, which provides experience for the selection and operation of equipment in LNG-FPSO production. Finally, the sensitivity of the process to the temperature, pressure, flow rate and component content of the raw gas is analyzed, and the range of parameters suitable for the process is given. The conclusion is that this process is suitable for complex sea conditions and large-scale liquefied natural gas treatment.
【作者单位】：中国石油大学(华东)储运与建筑工程学院;中海石油气电集团有限责任公司技术研发中心;
【基金】：国家自然科学基金项目“海上混合制冷剂天然气液化过程分离与换热特性研究”(编号:51504278) 国家高技术研究发展计划(863计划)项目“海上天然气液化存储关键技术研究”(编号:2013AA09A216) 山东省优秀中青年科学家科研奖励基金项目“绕管式换热器在海上天然气液化装置中换热性能及工艺影响研究”(编号:BS2014ZZ009)
【分类号】：TE646

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