Dynamic simulation of pre-cooling processes for large-scale LNG storage tanks

DENG Wenyuan; TIAN Lianjun; TONG Wenlong; LI Ning; GUO Kaihua; LI Wenfeng

doi:10.11949/j.issn.0438-1157.20150735

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Dynamic simulation of pre-cooling processes for large-scale LNG storage tanks

更新时间：2025-12-10

- Dynamic simulation of pre-cooling processes for large-scale LNG storage tanks
- CIESC Journal Issue S2, Pages: 399-404(2015)
- 作者机构：
  
  1. 中山大学工学院,广东,广州,510006
  2. 广东珠海金湾液化天然气有限公司,广东,珠海,519000
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20150735
  CLC： E821
- Online First：31 August 2015，
  
  Published：31 August 2015
- 稿件说明：
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DENG Wenyuan, TIAN Lianjun, TONG Wenlong, et al. Dynamic simulation of pre-cooling processes for large-scale LNG storage tanks[J]. CIESC Journal, 2015, (S2): 399-404.
DOI：

DENG Wenyuan, TIAN Lianjun, TONG Wenlong, et al. Dynamic simulation of pre-cooling processes for large-scale LNG storage tanks[J]. CIESC Journal, 2015, (S2): 399-404. DOI： 10.11949/j.issn.0438-1157.20150735.

摘要

大型常压LNG储罐在接收站中占有很高的投资份额

是接收站关键的储存容器

在启用时对调试技术的要求较高

其中

储罐的冷却是最重要的预备环节。基于气液两相容积节点原理

建立喷淋LNG蒸发计算模型

搭建大型LNG储罐预冷过程动态仿真平台

以160000 m3大型LNG地上全容储罐为例

计算其在预冷过程中所需要的时间以及预冷所用LNG总量

得到了预冷过程中储罐压力、BOG产生量以及储罐内部温度的动态变化

为设计优化液化天然气储罐预冷策略提供了理论依据。

Abstract

LNG storage tank is one of the most important and expensive devices for LNG terminals.The process of pre-cooling the LNG storage tank is the most critical and most dangerous debugging session.Based on the principle of gas-liquid two-phase volume node

the large-scale LNG storage tank pre-cooling dynamic simulation model was established.Taking a 160000 m3 LNG tank as an example

the time required for the pre-cooling process and the total used LNG for the tank pre-cooling were computed and the pressure of the LNG storage tank

the amount of BOG generation and the temperature of the tank during the pre-cooling process were determined with the established dynamic model.The optimization of the pre-cooled process design for a large-scale LNG storage tank was provided in a theoretical basis.

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