Abstract
In this paper, using Aspen HYSYS and two different structures of an organic Rankine cycle (ORC), thermodynamic and environmental improvements are made in the common process of a natural gas liquefaction process based on the PRICO method. According to the analyses, in the PRICO process, the total exergy efficiency, power consumption, and carbon dioxide (CO2) emission are 43.9%, 278.47 kWh/ton, and 0.17 kgCO2/kgLNG, respectively. Results showed that heat recovery by the ORC cycle results in decreasing the exergy loss, increasing the exergy efficiency, lowering the power consumption, and reduction in the CO2 emission. The total exergy efficiency of the PRICO process coupled with the modified ORC and ORC increases to 54.1% and 53.68%, respectively. Besides, the amount of consumed power is reduced to 225.42 kWh/ton and 227.26 kWh/ton, respectively. From the environmental aspect, it is demonstrated that the CO2 emission of the PRICO plus modified ORC process in comparison with PRICO and PRICO plus ORC is lower by 23.53% and 7.14%, respectively. Finally, comparing the results with previous papers revealed that the proposed scheme in this paper (PRICO plus modified ORC), regarding the energy and exergy efficiencies, has a better performance than technologies such as SMR, DMR, C3MR, and PRICO.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.