CAJ | 학술논문

浮式液化天然气(FLNG)生产储卸装置的装卸载系统是海上液化天然气(LNG)生产链的重要组成部分。由于作业环境和传输介质的特殊性，传统的流体传输和 LNG 码头装卸并不满足其要求。为研究流体温度的变化对管网内部 LNG 流动状态的影响，首先确定 FLNG 装卸载系统风险特性参数的计算流程，应用相关公式和数据进行编程计算，得到单时间节点各舱液货泵的流量、管网各节点的压力和温度，然后结合边界条件的变化，将此瞬时装卸工况的求解方法推广至整个装卸载过程，由此确定 LNG 传输过程中流动特性参数的时历变化关系。该模型的计算结果与实际装卸过程基本符合，说明该计算方法对FLNG装卸载系统风险特性参数的研究具有一定的可行性和准确性。
부식액화천연기(FLNG)생산저사장치적장사재계통시해상액화천연기(LNG)생산련적중요조성부분。유우작업배경화전수개질적특수성，전통적류체전수화 LNG 마두장사병불만족기요구。위연구류체온도적변화대관망내부 LNG 류동상태적영향，수선학정 FLNG 장사재계통풍험특성삼수적계산류정，응용상관공식화수거진행편정계산，득도단시간절점각창액화빙적류량、관망각절점적압력화온도，연후결합변계조건적변화，장차순시장사공황적구해방법추엄지정개장사재과정，유차학정 LNG 전수과정중류동특성삼수적시력변화관계。해모형적계산결과여실제장사과정기본부합，설명해계산방법대FLNG장사재계통풍험특성삼수적연구구유일정적가행성화준학성。
The offloading system of floating LNG(FLNG)production storage and offloading is an important part of offshore LNG production chains. Because of the particularity of operating environment and conveying material,the traditional way cannot meet the requirements of transporting of liquid and offloading on dock. For studying the influ-ence of the changes in fluid temperature on the state of LNG flow within the pipe network,the calculation flow of the risk characteristic parameters of FLNG offloading system is determined and programmed with correlative formula and data. The liquid pump flow of the tanks,the pressures and temperatures of each node in the network(single time node)are obtained. Then this instantaneous-condition calculation method is extended to the whole process of loading and unloading,and the calendar relationship of the flow characteristic parameters during the LNG transit is con-firmed. The results of the model are in accordance with those of the real processes of loading and unloading,which shows that this computing method is feasible and accurate in the research of the risk characteristic parameters of FLNG offloading system.