Technical and Economic Evaluation and Development Policy Suggestions of LNG Power Plants: Evaluation and Development Policy

Processing Lng For Utilization

Taking natural gas from the earth is not an easy process. It utilizes bulk machineries for extracting the raw natural gas. The spot prediction of natural gas is also very tough process a big team and machineries works behind for extracting the raw natural gas from the earth. The raw natural gas consist of water molecules along with acid gases, which are very hazardous. Hence processing of NG is very important. Figure 2 shows the NG processing and its by products. At first NG is taken out from the earth through gas wells and carried away through receptors. The second step is removing the acid gases which is mixed along with NG naturally. After removal of acid gases the acid gases are treated for further usage. Then comes next with dehydration process. After dehydrating the gas liquefaction is done. Hence it is called as Liquefied Natural Gas. After fractionizing stabilization is done along with condensation. The output from the stabilizer is a pure Liquefied natural gas. During fractionation process LPG is obtained as by product. Processing of NG to LNG is shown in the figure 2.

Figure 1.

Processing NG to LNG

Calculation Model Of Cost Of Electricity Of Lng Power Plants

Total Cost Of Electricity

LNG power generation cost (yuan/MW) is composed of three parts: 1) cost of depreciation (COD); 2) cost of fuel (COF); and 3) cost of maintenance (COM) [4]. If the COD of an LNG power plant is calculated by the straight-line depreciation method, the calculation formula of cost of electricity (COE) is as follows Equation 1: