CAJ | 학술논문

以应用于海上的浮式丙烷预冷双氮膨胀液化装置为原型，拟建设一套液化中试装置。为了确定液化中试装置的规模，提出中试装置与原型装置之间宜遵循流程一致性、关键控制方式一致性、运动相似性和流态相似性等四项原则。上述原则中，分析表明，对于除关键控制方式一致性外，流程一致性、运动相似性和流态相似性对中试装置的规模没有直接的影响。为了与原型装置的关键控制方式保持一致，中试装置的设备选型就显得非常重要，其中对于确定规模影响较大的关键设备为制冷剂压缩机，而冷箱、压缩机驱动器、透平膨胀机及丙烷换热器对规模影响不大。因此，建议中试装置中压缩机的型式与浮式天然气液化装置保持一致，冷箱中换热芯体可以考虑采用两台并联的设计方案。
이응용우해상적부식병완예랭쌍담팽창액화장치위원형，의건설일투액화중시장치。위료학정액화중시장치적규모，제출중시장치여원형장치지간의준순류정일치성、관건공제방식일치성、운동상사성화류태상사성등사항원칙。상술원칙중，분석표명，대우제관건공제방식일치성외，류정일치성、운동상사성화류태상사성대중시장치적규모몰유직접적영향。위료여원형장치적관건공제방식보지일치，중시장치적설비선형취현득비상중요，기중대우학정규모영향교대적관건설비위제랭제압축궤，이랭상、압축궤구동기、투평팽창궤급병완환열기대규모영향불대。인차，건의중시장치중압축궤적형식여부식천연기액화장치보지일치，랭상중환열심체가이고필채용량태병련적설계방안。
Based on the propane pre-cooling and dual-nitrogen-expansion sub-cooling (C3-DN2)process used for floating liquefied natural gas production,storage and offloading unit (LNG-FPSO),a pilot unit will be built to test the rationality of process configuration and key control modes,and to study the operability and flexibility of its application in offshore cases.In order to define the capacity,the pilot unit should keep the consistency of process configurations and key control modes,and the similarity of moving and flow regime with LNG-FPSO.The factors affecting the capacity of the pilot unit are further investigated,and the results show that the type of key equipment to keep the consistency of key control mode greatly impacts the capacity,and the other factors have less influence.Among the main devices,the refrigerant compressor should be considered the most carefully when defining the capacity of the pilot unit,and others such as cold box,driver,turbine expander and the heat exchanger for C3 are less important. Therefore,it is better to select the same type of refrigerant compressor in the pilot as that in the LNG-FPSO,and to design two plate-fin heat exchangers in parallel in the cold box.