DOI: 10.1016/j.jcou.2017.06.001
Scopus记录号: 2-s2.0-85021215175
论文题名: 2nd law analysis of Portuguese municipal solid waste gasification using CO2/air mixtures
作者: Couto N. ; Silva V. ; Cardoso J. ; Rouboa A.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2017
卷: 20 起始页码: 347
结束页码: 356
语种: 英语
英文关键词: 2nd law analysis
; Carbon dioxide gasification
; CFD
; Municipal solid waste
; Semi-industrial gasification plant
; Tar content
Scopus关键词: Carbon dioxide
; Computational fluid dynamics
; Efficiency
; Exergy
; Gasification
; Global warming
; Industrial plants
; Mixtures
; Population statistics
; Solid wastes
; Tar
; 2nd law analysis
; Carbon dioxide conversions
; Carbon dioxide emissions
; Carbon dioxide injection
; Gasification plants
; Gasification temperatures
; Municipal solid waste (MSW)
; Operational conditions
; Municipal solid waste
英文摘要: Urbanization, mainly caused by population growth and industrialization, is causing serious environmental problems. Municipal solid waste (MSW) is one of the major challenges facing the world today. In Portugal the growing volume of MSW has become a central problem for municipalities, due to lack of space and the high costs to solve it. Gasification is starting to be considered as a possible alternative when dealing with municipal wastes. However, first is necessary to overcome some concerns related to the process, such as tar mitigation and carbon dioxide emissions. The presented study focuses on a second law analysis conducted on Portuguese MSW gasification using carbon dioxide and air mixtures. To do so, a previously developed numerical model, validated using data from a semi-industrial plant, was used to assess carbon dioxide injection. First, influence of operational conditions on syngas exergy values was studied. Exergy values increased close to 6% when equivalent rate was increased from 0.15 to 0.25, steadily dropping with further increase. On the other hand, exergy values appear to steadily increase with carbon dioxide addition (14% when increased from 0 to 1) and reactor temperature (40% when increased from 700 to 900 °C). Then, the influence of temperature and CO2/MSW ratio on exergy efficiency, tar efficiency and carbon dioxide conversion was investigated. Results showed that both parameters have a positive effect on exergy efficiency. Conversely, CO2/MSW ratio and gasification temperature lead to decreases in both tar exergy efficiency and in carbon dioxide. © 2017 Elsevier Ltd. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52693
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Couto N.,Silva V.,Cardoso J.,et al. 2nd law analysis of Portuguese municipal solid waste gasification using CO2/air mixtures[J]. Journal of CO2 Utilization,2017-01-01,20