State of the art in separation processes for alternative working fluids in clean and efficient power generation

Alrebei, Odi Fawwaz, Amhamed, Abdulkarem I., El-Naas, Muftah H., Hayajnh, Mahmoud, Orabi, Yasmeen A., Fawaz, Ward, Al-tawaha, Ahmad S. and Valera Medina, Agustin ORCID: https://orcid.org/0000-0003-1580-7133 2022. State of the art in separation processes for alternative working fluids in clean and efficient power generation. Separations 9 (1) , 14. 10.3390/separations9010014

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Abstract

Gas turbines must now comply with much stricter emission control regulations. In fact, to combat the greenhouse effect, regulatory authorities have drastically reduced allowable emission levels. For example, in less than 12 years, the United States’ Clean Air Act issued the New Source Performance Standards (NSPS), which tightened the NOx emission margin of natural gas combustion (from 75 ppm to 10 ppm). On the other hand, despite those efforts, the high demand for energy produced by fossil-fueled gas turbines in power plants has resulted in dramatic increases in anthropogenic CO2 and NOx emitted by gas combustors. Most systems responsible for these undesirable emissions are directly linked to power generation, with gas turbines playing a pivotal role. Yet, gas turbines are still widely used in power plants and will continue to meet the growing demand. Therefore, sequestration and separation techniques such as Carbon Capture and Storage (CCS) and Air Separation Units (ASU) are essential to reduce CO2 and NOx emissions while allowing large amounts of power to be generated from these systems. This paper provides an in-depth examination of the current state of the art in alternative working fluids utilized in the power generation industry (i.e., gas turbines, combustion). In addition, this paper highlights the recent contribution of integrating separation techniques, such as air separation, steam methane reforming, and water-gas shifting, to the power generation industry to facilitate a continuous and adequate supply of alternative working fluids.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
ISSN:	2297-8739
Date of First Compliant Deposit:	8 February 2022
Date of Acceptance:	7 January 2022
Last Modified:	05 May 2023 15:50
URI:	https://orca.cardiff.ac.uk/id/eprint/147083

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