Thermodynamic analysis of decarbonizing NGCC power plants by the tail-end green ammonia-driven calcium looping

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dc.contributor.authorHe, Song
dc.contributor.authorZeng, Xuelan
dc.contributor.authorZheng, Yawen
dc.contributor.authorZhu, Mingming
dc.contributor.authorWang, Dan
dc.contributor.authorWang, Junyao
dc.date.accessioned2024-12-19T13:31:49Z
dc.date.available2024-12-19T13:31:49Z
dc.date.freetoread2024-12-19
dc.date.issued2025-01-01
dc.date.pubOnline2024-12-13
dc.description.abstractThis work proposes a novel ammonia driven tail-end calcium looping (CaL) process to capture carbon emission from natural gas combined cycle (NGCC) power plants for net-zero energy. Two integration schemes are introduced, including sensible heat thermochemical recuperation (SHTR) and carbonation heat thermochemical recuperation (CHTR) driven by combustion of partially cracked ammonia as a zero-carbon fuel. Results show that energy penalties can be reduced from 9.6 % in the NGCC power plant with the CaL-Oxy method to 1.8 % in the SHTR scheme and 1.4 % in the CHTR scheme, respectively. Comparing with the NGCC base power plant and the NH3-based thermochemical recuperation power plant, energy savings can be achieved at 5.44 MJLHV/kg CO2 in the SHTR scheme and 6.73 MJLHV/kg CO2 in the CHTR scheme. Additionally, exergy analysis shows that the reduction of exergy destruction in the carbonation and calcination processes determines the thermodynamic performance enhancement. Cascaded heat recovery of carbonation heat and the heating supply method of calcination narrow the energy level difference, contributing to the reduction of exergy destruction. Sensitivity analysis indicates that reorganizing a more efficient thermodynamic cycle can offset the energy consumption of CO2 capture from flue gas, resulting in an optimized negative energy penalty at −0.8 %.
dc.description.journalNameEnergy
dc.description.sponsorshipThis work was supported by grants from Natural Science Foundation of Guangdong Province (No. 2024A1515012661), and Guangzhou Basic and Applied Basic Research Foundation (No. 2024A04J3828), Engineering and Physical Sciences Research Council, UK (EP/X03593X/1), and China Postdoctoral Science Foundation (No. 2024T170587, No. 2024M752134).
dc.identifier.citationHe S, Zeng X, Zheng Y, et al., (2025) Thermodynamic analysis of decarbonizing NGCC power plants by the tail-end green ammonia-driven calcium looping. Energy, Volume 314, January 2025, Article number 134147
dc.identifier.elementsID560130
dc.identifier.issn0360-5442
dc.identifier.paperNo134147
dc.identifier.urihttps://doi.org/10.1016/j.energy.2024.134147
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/23312
dc.identifier.volumeNo314
dc.languageEnglish
dc.language.isoen
dc.publisherElsevier
dc.rightsAttribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subject4004 Chemical Engineering
dc.subject40 Engineering
dc.subject13 Climate Action
dc.subjectEnergy
dc.subject4008 Electrical engineering
dc.subject4012 Fluid mechanics and thermal engineering
dc.subject4017 Mechanical engineering
dc.subjectCalcium looping
dc.subjectAmmonia
dc.subjectThermochemical recuperation
dc.subjectPost-combustion CO2 capture
dc.titleThermodynamic analysis of decarbonizing NGCC power plants by the tail-end green ammonia-driven calcium looping
dc.typeArticle
dcterms.dateAccepted2024-12-07

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