Investigation on LNG Plant in Small Scale

Document Type : Review Paper

Authors
Mohamad Reza Jafari Nasr 1
Samira Ahmadi 2
1 Islamic Azad University, Science and Research Brach,, Tehran, Iran
2 Department of Chemical Engineering, Faculty of Oil and Chemical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
20.1001.1.25885251.1399.7.1.1.8
Abstract
In this study, the process of single stage mixed natural gas liquefaction is reviewed, then process energy optimization and economic analysis are followed. The effect of specific energy consumption optimization on the costs of cooling equipment was investigated. The basis of this study is PRICO process and due to some limitations and concerns for Iran, it is tried to develop a new modified process so that the available process restrictions would expel and finally the recommended process optimized by genetic algorithm. Mole flow of refrigerant, low pressure and high pressure of refrigerant in the cycle, are the most important operational parameters that were selected by sensitivity analysis. The total energy consumption of compressors reached 1413.8 kW and decreased by 11 percent. Results showed optimization of the specific energy consumption increases the cost of the heat exchanger, due to the reduction of heat exchanger temperature driving force and need to higher heat transfer area. However, the operating cost of compressors can be reduced. 

Keywords

Subjects

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  • Receive Date 25 April 2022