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Exergy analysis and optimization of natural gas liquids recovery unit
, Article International Journal of Air-Conditioning and Refrigeration ; Volume 29, Issue 1 , 2021 ; 20101325 (ISSN) ; Norouzi, N ; Shiva, N ; Mahmoodi Folourdi, R ; Hashemi Bahremani, E ; Sharif University of Technology
World Scientific
2021
Abstract
The Natural Gas Liquids (NGL) recovery unit is one of the processes that requires cooling. The sweetened gas enters this unit after the dehydration stage, and the final product called NGL Product is stored and ready for consumption or export. In this research, the first, one of the NGL units, is simulated with HYSYS software. Three types of processes with different cooling systems are studied using the exergy analysis method. Joule-Thomson's combination with the expander is selected for its high exergy efficiency, and the exergy efficiency function has been selected as the objective function 1 to optimize this process mathematically based on this study's findings. The critical term in this...
Development of a multi-objective decision-making model to recover flare gases in a multi flare gases zone
, Article Energy ; Volume 203 , 2020 ; Sattari, S ; Soltanieh, M ; Vatani, A ; Sharif University of Technology
Elsevier Ltd
2020
Abstract
In this paper, a systematic investigation and modeling of all available technologies (such as NGL, injection in pipelines, LNG, GTL, NGH, and CNG plants, EOR, electricity production by thermal power plants, and water generation by MED technologies) for flare gas recovery has been developed. An optimal combination of the technologies has been proposed for flare gas recovery of five oil wells in the south of Iran with different specifications as case studies. The optimal combinations of all the technologies have been investigated with minimizing the payback period of capital costs (economical) and maximizing CO2 pollutant reduction (environmental) objective functions by using the genetic...