Feasibility study of the small scale LNG plant infrastructure for gas supply in north of Iran (Case Study)

摘要

More than 85% of urban and 40% of rural areas of Iran are connected to the national gas pipeline network. For remaining areas of Iran, this method of gas transportation is not possible due to the great distance to the gas transmission lines, low population and mountainous areas. In order to reduce energy transportation cost, it is possible to use other methods such as CNG and LNG. For the first time, use of LNG for the purpose of gas supply to about 43,000 households in the north of Iran has been considered. In this paper, a techno-economical study has been carried out. The scope of study includes natural gas liquefaction plant, LNG storage tanks, LNG trucks and re-gasification stations. Choosing the proper capacity, cost estimation and calculation of operating fees for the implementation of this study is done. The calculations show that the cost of investing is 124 million Euros, (61 million Euros for refrigeration-liquefaction unit and 63 million Euros for the rest). The case study will be implemented as B.O.T. and the fee paid to investor per cubic meter of gas delivered to local gas networks is 14 cent Euro/m(3) for 20 years plant operation and 13% IRR.