Comparative study of CO2-N2 and N2-N2 dual expansion in natural gas liquefaction process
Center for Gas Refining and Petrochemicals, University of Port Harcourt, Port Harcourt, Rivers State, Nigeria.
Research Article
Global Journal of Engineering and Technology Advances, 2023, 16(03), 200–206.
Article DOI: 10.30574/gjeta.2023.16.3.0197
Publication history:
Received on 15 August 2023; revised on 26 September 2023; accepted on 29 September 2023
Abstract:
The processes were modelled using the Aspen Hysys version 11. The paper compared two refrigeration systems with different refrigerants, CO2-N2 and N2-N2, and their expenders. The parameters compared are the liquefaction power, specific power, production capacity, and heat duty of the expander cycle. The liquefaction power of CO2-N2 (547.669kW) is lower than that of N2-N2 (815.85kW). The specific power consumption for CO2-N2 was 0.44096kW/kg, and for N2-N2 was 0.6569kW/kg. The production capacity N2-N2 gave a higher value of 6945.6MTPA than CO2-N2 4904.38MTPA.
Keywords:
Optimization; Liquified Nigeria Gas (LNG); Natural Gas; Expander; Liquefaction Power; Specific Power consumption; Production Capacity
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