Optimization of a single expander LNG process

被引：13

作者：

Austbo, Bjorn ^{[1
]}

Gundersen, Truls ^{[1
]}

机构：

[1] Norwegian Univ Sci & Technol NTNU, Dept Energy & Proc Engn, NO-7491 Trondheim, Norway

来源：

3RD TRONDHEIM GAS TECHNOLOGY CONFERENCE | 2015年 / 64卷

关键词：

LNG; Single expander; Optimization; Process modelling;

D O I：

10.1016/j.egypro.2015.01.009

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

A single expander process with nitrogen as refrigerant has been optimized for liquefaction of natural gas. Comparisons have been made between a simplified process model assuming constant specific heat capacities and ideal gas behavior for the refrigerant, and a rigorous model employing the Soave-Redlich-Kwong equation of state. For the simplified model, equations have been developed that enable an analytical solution to the optimization problem. Quite surprisingly, there is good agreement between the models when the minimum temperature difference is small. For the remaining cases, better solutions are obtained from the rigorous model accounting for the non-ideal behavior of the refrigerant. (C) 2015 The Authors. Published by Elsevier Ltd.

引用

页码：63 / 72

页数：10

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