CAJ | 학술논문

大型常压LNG储罐是LNG接收站中极其重要的单元设备,占有很高的投资比例,其正式启用时对调试工作的技术要求较高,而LNG储罐调试工作最关键和最危险的环节就是冷却.为此,详细介绍了国内LNG接收站常用16×104m~3常压LNG储罐的冷却过程,分析了LNG储罐冷却前应具备的条件及注意事项,讨论了LNG储罐冷却过程中的压力控制、冷却介质(LNG)供应及流量控制、冷却过程的监控及冷却速率控制等调试技术,指出了冷却过程容易出现管线位移过大、法兰泄漏等问题,并给出了相应解决方法.研究成果对国内其他LNG项目具有借鉴意义.
대형상압LNG저관시LNG접수참중겁기중요적단원설비,점유흔고적투자비례,기정식계용시대조시공작적기술요구교고,이LNG저관조시공작최관건화최위험적배절취시냉각.위차,상세개소료국내LNG접수참상용16×104m~3상압LNG저관적냉각과정,분석료LNG저관냉각전응구비적조건급주의사항,토론료LNG저관냉각과정중적압력공제、냉각개질(LNG)공응급류량공제、냉각과정적감공급냉각속솔공제등조시기술,지출료냉각과정용역출현관선위이과대、법란설루등문제,병급출료상응해결방법.연구성과대국내기타LNG항목구유차감의의.
The large-scale atmospheric LNG storage tank is an important facility at LNG receiving stations and it involves high investments. It requires high commissioning techniques when it comes on stream. The most crucial and dangerous step in the commissioning of LNG storage tank is cooling. This paper hereby introduces the cooling process of the common 160,000 m~3-in-capacity atmospheric LNG storage tank in China, the preconditions and matters to which attention is paid upon the cooling of tank. It also discusses some commissioning techniques needed in the cooling process, including pressure control, cooling medium (LNG) supply and its flow control, process monitoring and cooling rate control, etc. The paper points out that the displacement of pipelines is easily to be overlarge and flange leakage takes place frequently in the cooling process and it gives corresponding solutions. So it provides good references for other LNG projects.