Optimization analysis of booster-recondensation system in LNG receiving terminal

doi:10.11949/j.issn.0438-1157.20151063

Abstract

Abstract:

Stable operation of booster-recondensation system is critical for liquefied natural gas(LNG)receiving terminal.This paper illustrates the process and control scheme of Booster-Recondensation System.Based on the high-pressure pump inlet filter blocking scenario,paper discussed the interaction between high-pressure pump suction pressure and the filter pressure difference.Meanwhile paper demonstrates the potential impact to recondenser operation due to pump well vent line piping design.Optimization is proposed for stable operation.

Key words: LNG receiving terminal, recondenser, BOG, HP transfer pump, booster-recondensation system, process control, process systems, optimal design

摘要：

增压-冷凝系统是LNG接收站的控制核心。介绍了增压-冷凝系统工艺流程,结合某LNG接收站运行过程中高压输送泵入口过滤器阻塞的情况分析了高压输送泵入口压力与过滤器压差间的变化规律以及在此情况下泵井放空管线配管对再冷凝器平稳运行的影响,对存在的问题提出了优化方案,从而保证增压-冷凝系统稳定运行。

关键词: LNG接收站, 再冷凝器, 蒸发气, 高压输送泵, 增压-冷凝系统, 过程控制, 过程系统, 优化设计

CLC Number:

KONG Lingguang, LU Yi. Optimization analysis of booster-recondensation system in LNG receiving terminal[J]. CIESC Journal, 2015, 66(S2): 418-424.

孔令广, 鲁毅. LNG接收站增压-冷凝系统优化分析[J]. 化工学报, 2015, 66(S2): 418-424.

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