Pra Rancangan Pabrik Liquefied Natural Gas (Lng) Dari Coal Bed Methane (Cbm) Dengan Kapasitas 25 Mmscfd/Tahun

Abstract

To achieve sustainable energy needs in Indonesia, alternative energy sources are needed to reduce the use of fossil fuels which are decreasing every year. One of them is by using alternative energy Liquefied Natural Gas (LNG) from Coal Bed Methane (CBM). There are several stages in the LNG production process from CBM, namely dehydration unit, acid gas removal unit, fractination unit and refrigeneration and liquefaction unit. This plant is designed with a production capacity of 25 MMSCFD/Year with an operating time of 330 days/year. The raw materials needed are CBM as much as 31.0205838 MMSCFD. The process chosen in making LNG at this plant is the adsorption process. The selection of the process is carried out with consideration that it can remove water and mercury content to a maximum limit of less than 10 ppm, this is in accordance with the desired product specifications. This plant will operate in KEK Tanjung Api-Api, Banyuasin Regency, South Sumatra with an estimated start of operation in 2030. Based on the results of the evaluation of economic analysis, it can be concluded that the establishment of an LNG plant from CBM waste with a capacity of 25 MMSCFD / Year is feasible to be established with details of Pay Out Time (POT) 3.09 years, Internal Rate of Return (IRR) 28.4% and Break Event Point (BEP) of 43.56%.