Environmental evaluation of european ammonia production considering various hydrogen supply chains

Dora-Andreea Chisalita, Letitia Petrescu and Calin-Cristian Cormos

Renewable and Sustainable Energy Reviews, 2020, vol. 130, issue C

Abstract: Ammonia synthesis is a topic of high interest in the industry as the market continues to expand and demand increases. The current ammonia production route is very energy and carbon-intensive, relying greatly on natural gas both as feedstock as well as for heat and power generation within the plant. In the present work, a cradle-to-gate environmental assessment of conventional and greener hydrogen production routes integrated with ammonia synthesis is carried out according to ReCIPe impact assessment method. Hydrogen production through conventional steam methane reforming coupled with gas-liquid carbon dioxide absorption by amines and chilled ammonia, electrolysis, and iron-based chemical looping are analysed and compared. Mass and energy balances from process flow modelling are used as inputs for the environmental evaluation using Life Cycle Assessment. The system boundaries considered in this work include: i) main processes: ammonia production, hydrogen production, carbon dioxide separation; ii) upstream processes: nitrogen, natural gas, ilmenite, Methyl-DiEthanol-Amine, chilled ammonia and catalysts supply chains, iii) downstream processes: carbon dioxide compression, transport and storage, degradation/disposal of solvents/oxygen carrier. The results show that natural gas-based ammonia synthesis integrated with chemical looping hydrogen production gives the highest reduction in Global Warming Potential while six out of the nine investigated impact indicators (excluding Global Warming Potential) suffer an increase between 30% and 60%. In the case of hydrogen produced from electrolysis, unless the electricity necessary for electrolysis is obtained from non-fossil sources, it results in the highest overall emissions to air, water and soil.

Keywords: Life cycle assessment; Ammonia production; Carbon capture and storage; Chemical looping; Methyl-di-ethanol amine; Chilled ammonia (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (16)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S1364032120302550
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:rensus:v:130:y:2020:i:c:s1364032120302550

Ordering information: This journal article can be ordered from
http://www.elsevier.com/wps/find/journaldescription.cws_home/600126/bibliographic
http://www.elsevier. ... 600126/bibliographic

DOI: 10.1016/j.rser.2020.109964

Access Statistics for this article

Renewable and Sustainable Energy Reviews is currently edited by L. Kazmerski

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