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Issue:ISSN 1006-5539
          CN 51-1183/TE

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Analysis and Practice of Online Filling of Perlite in Large LNG Tank
Author of the article:Tong Wenlong1, Tian Lianjun1, Fu Chengtie2, Zhong Hai1
Author's Workplace:1.Guangdong Zhuhai Golden Bay LNG Ltd; 2.CNOOC Fujian LNG Co., Ltd
Key Words:LNG storage tank; Perlite; Settlement; Online filling
Abstract:

Large LNG tanks are insulated by perlite.The accumulation of running time, the fluctuation of tank pressure, the vibration caused by the start-up and shutdown of equipment in the tank and the unloading process will lead to the uneven subsidence of perlite in varying degrees.If not handled in time, it will affect the cooling effect of the storage tanks and damage the storage tanks seriously. Based on the on-line filling practice of perlite in large LNG tank at Zhuhai LNG receiving station, the perlite filling replacement device, pressure control of storage tank, filling height of perlite, and practical evaluation methods are analyzed and studied.The perlite settlement representation of LNG storage tanks and the control of on-line perlite filling process are discussed.The on-line perlite filling method and experience of large LNG storage tanks are summarized, which provides reference for carrying out perlite online filling by other LNG receiving stations.

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