An innovative techno-economic analysis for the selection of an integrated ejector system in the flare gas recovery of a refinery plant

Soroush Eshaghi and Farzad Hamrang

Energy, 2021, vol. 228, issue C

Abstract: The compression process in flare gas recovery, commonly carried by compressors, is the costliest. The use of an integrated gas-gas ejector system instead of a compressor is proposed and studied technically and economically in this paper. Thus, the flare gas recovery process modeling, including the gas sweetening unit, is performed for both compressor and ejector systems. Different arrangements of the integrated ejector system in the form of multi-stage ejectors (series) in parallel branches are also investigated. To find the geometry of ejectors for simulation of integrated ejector system in Aspen HYSYS, as well as the prediction of the ejector performance under different pressures and mass flow rates of inlet gas, a computer code was developed in MATLAB software. Results of the economic analysis demonstrated the compression method with a parallel three-branch arrangement (containing a three-stage ejector in each branch) were the most appropriate solution in the flare gas recovery of a typical oil refinery plant, with an investment cost of 4.84 $M and accepted payback period of 2 years and the recovery of approximately 90% flare gas volume during normal operation.

Keywords: Flare gas recovery; Oil refinery plant; Integrated ejector system; Techno-economic analysis; Energy management (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (12)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544221008434
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:228:y:2021:i:c:s0360544221008434

DOI: 10.1016/j.energy.2021.120594

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().