DOI: 10.1016/j.jcou.2017.12.014
Scopus记录号: 2-s2.0-85039790286
论文题名: Utilization of alumina-supported K2CO3 as CO2-selective sorbent: A promising strategy to mitigate the carbon footprint of the maritime sector
作者: Erto A. ; Balsamo M. ; Paduano L.P. ; Lancia A. ; Di Natale F.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 24 起始页码: 139
结束页码: 148
语种: 英语
英文关键词: Carbonation
; CO2 capture
; Fixed-bed scale-up
; Naval sector
; Potassium carbonate
; Supported sorbents
Scopus关键词: Alumina
; Carbon dioxide
; Carbon footprint
; Carbonation
; Data handling
; Diesel engines
; Engines
; Exhaust systems (engine)
; Global warming
; Marine applications
; Marine engines
; Potash
; Scrubbers
; Ships
; Sorption
; Waste heat
; Waste heat utilization
; Carbon dioxide emissions
; CO2 capture
; Incipientwetness impregnation
; Intra-particle diffusion
; Naval sector
; Scale-up
; Seawater scrubbers
; Waste heat recovery units
; Sorbents
英文摘要: This paper investigates the application of K2CO3 supported onto porous alumina, as sorbent for selective CO2 capture in marine applications. Alumina-functionalized sorbents were prepared by incipient wetness impregnation achieving K2CO3 loadings from 3.6 to 14.1% wt. Carbonation tests were performed in a fixed-bed column at temperatures between 60 and 105 °C, as those typically occurring at the outlet of a scrubber and/or a waste heat recovery unit, with a model diesel engine exhaust (5% vol. CO2, 5% vol. H2O, balance N2). According to the carbonate loading, the sorbents may reach conversion degrees of carbonate up to 90% and overall capture capacity up to 0.66 mol kg−1 sorbent. Experimental data showed higher conversion degree and capture capacity compared with unsupported K2CO3, which is affected by significant intraparticle diffusion limitations. Steam regeneration tests performed in a fixed-bed column on the sorbent with 3.6% wt K2CO3 loading revealed that a temperature of 120 °C assures almost complete recovery of captured CO2 while preserving the sorbent carbonation degree for 10 consecutive carbonation/regeneration cycles. The preliminary design of a temperature swing carbonation/regeneration unit for on-board ship installation was performed for the reference case study of a passenger ship equipped with a 4.35 MW marine engine fueled with marine gas oil and with a commercial seawater scrubber for SO2 removal. The proposed unit appeared able to cut up to 30% carbon dioxide emission by using the sorbent containing 3.6% wt K2CO3 and operating the carbonation and regeneration stage at 60 and 120 °C, respectively. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111986
Appears in Collections: 气候减缓与适应
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作者单位: Dipartimento di Ingegneria Chimica, deiMateriali e della Produzione Industriale, Università degli Studi di Napoli Federico II, Piazzale Vincenzo Tecchio 80Napoli 80125, Italy; Dipartimento di Ingegneria Industriale e dell'Informazione, Università degli Studi della Campania Luigi Vanvitelli, Via Roma 29, Aversa, Caserta 81031, Italy; Consiglio Nazionale delle Ricerche, Istituto di Scienze Applicate e Sistemi Intelligenti (ISASI) “Eduardo Caianiello”, Via Campi Flegrei 34, Pozzuoli, Napoli 80078, Italy
Recommended Citation:
Erto A.,Balsamo M.,Paduano L.P.,et al. Utilization of alumina-supported K2CO3 as CO2-selective sorbent: A promising strategy to mitigate the carbon footprint of the maritime sector[J]. Journal of CO2 Utilization,2018-01-01,24