Long-distance transportation of liquefied natural gas (LNG) and cold energy utilization

doi:10.11949/j.issn.0438-1157.20181160

Abstract

Abstract:

The end temperatures and the pressure drop of the long-distance pipeline for the LNG transportation, at different thickness of the thermal insulation layer with different external environment temperatures, are obtained by using Sinda/Fluint software. The simulation results show that the LNG temperature increase is 4.068℃, and the pressure drop is 2.52 MPa at thickness of the thermal insulation layer of 0.1 m and the outside temperature of 33.5℃, after 12 km long distance transportation of LNG at inlet temperature of -160℃ and inlet pressure of 6.6 MPa. Taking into account of these conditions, the LNG cold energy utilization scheme at downstream of the pipeline is designed by HYSYS software, for a total cold capacity of 300000 m² operating respectively at cold storage, normal temperature storage and high temperature storage, at around 12 km away from the LNG receiving station.

摘要：

通过Sinda/Fluint软件针对在不同保温层厚度及外界环境温度的条件，对LNG长输管道进行模拟仿真，得到了管道末端的温度及长距离输送的压力损失。模拟结果表明保温层厚度0.1 m，外界温度33.5 ℃时，−160 ℃、6.6 MPa的LNG经过12 km的长距离输送后温度升高4.068 ℃，压力损失2.52 MPa。以此为初始条件，通过HYSYS软件设计管道下游的LNG冷能利用方案，为LNG接收站12 km外的共30×10⁴m²的低温库、常温库和高温库提供冷量。

CLC Number:

TE832

DU Xu, CHEN Yu, JU Yonglin. Long-distance transportation of liquefied natural gas (LNG) and cold energy utilization[J]. CIESC Journal, 2018, 69(S2): 442-449.

杜旭, 陈煜, 巨永林. 液化天然气(LNG)的长距离输送及其冷能利用[J]. 化工学报, 2018, 69(S2): 442-449.

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