DOI: 10.1016/j.jcou.2018.04.009
Scopus记录号: 2-s2.0-85045952012
论文题名: Exergoeconomic assessment and optimization of a syngas production system with a desired H2/CO ratio based on methane tri-reforming process
作者: Sadeghi M. ; Jafari M. ; Yari M. ; Mahmoudi S.M.S.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 25 起始页码: 283
结束页码: 301
语种: 英语
英文关键词: exergoeconomic
; hydrogen
; reactor
; syngas
; Tri-reforming
Scopus关键词: Carbon dioxide
; Chemical reactors
; Costs
; Economics
; Energy efficiency
; Hydrogen
; Methane
; Synthesis gas
; Temperature
; Exergoeconomic
; Feed compositions
; Methane combustion
; Overall energy efficiency
; reactor
; Syn-gas
; Temperature increase
; Thermodynamic conditions
; Reforming reactions
英文摘要: Based on methane tri-reforming process, a novel syngas producing system is proposed. The proposed system is analyzed in details from the viewpoints of thermodynamics and economics. In order to calculate the reactor volume required for its cost evaluation, a one dimensional homogenous model, based on the chemical kinetics of tri-reforming reactions is conducted for a fixed bed reactor. Influence of some design parameters including the reactor inlet temperature, system pressure, feed composition and reactor length on the reforming process as well as on the system performance is examined. Then, an optimization process is performed to maximize the overall energy efficiency. The results of parametric study demonstrate that the main indicators of system including H2 yield, H2/CO ratio, CH4 and CO2 conversions, energy efficiency and unit cost of the produced syngas are enhanced at thermodynamic conditions of high temperatures and low pressures. It is observed that, when the H2O concentration in the feed composition increases or the CO2 concentration decreases, the unit cost of produced syngas is reduced. In addition, the optimization process yields a maximum overall energy efficiency of 92.46 %. At this optimum design point, the unit cost of produced syngas is calculated as 4.48 $/GJ. Moreover, it is revealed that close to the reactor entrance, all oxygen is consumed by the methane combustion and the mixture temperature increases rapidly to a maximum value. © 2018 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/111928
Appears in Collections: 气候减缓与适应
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作者单位: Faculty of Mechanical Engineering, University of Tabriz, Tabriz, Iran
Recommended Citation:
Sadeghi M.,Jafari M.,Yari M.,et al. Exergoeconomic assessment and optimization of a syngas production system with a desired H2/CO ratio based on methane tri-reforming process[J]. Journal of CO2 Utilization,2018-01-01,25