Techno-Economic Analysis of Transportation of Sequestered Carbon (Iv) Oxide from Afam Iv Power Plant

Abstract

Carbon capture and storage (CCS) has been recognized as one major technology that could sustain a greener environment. Because of the constant use of fuel for power generation, which releases CO2 that could be sequestered in geologic sites preventing their eventual release to the atmosphere. This study used Afam IV Gas Turbines in Nigeria as a case study and evaluated the emission of CO2 from the plants and the technoeconomic analysis of transporting captured CO2 from this power plant to Jones Creek (the proposed sequestration site in this study). The CO2 emission factor was determined from the daily energy generation from the gas consumption of the two turbines at the plant. Pipe Flo Professional 14 software was used for the pipeline design that was used for the transportation. The CO2 emissions from the two turbines were found to have a flow rate of 0.68kg/s, requiring 4,416kW and 61.402kW of compressor power and pump power, respectively, each at 85% efficiency. This power requirement constitutes 3.44% of 130MW of the installed capacity of the two turbines at Afam IV. The capacity of Jones Creek was found to be 8.94x10 6 m 3 , and the pipeline cost for the transportation of CO2 was found to be ₦21.994Billion. The National Electricity Regulatory Commission (NERC) Multi-Year Tariff Order (MYTO) D3 billing rose to 600% during the construction period but dropped to 19% increment beyond the construction period as a result of the CO2 compression and transportation. It is recommended that the Federal Government of Nigeria should start to implement policies that would propel oil and gas companies in Nigeria to start considering CCS as an emission mitigation option in Nigeria.