Process simulation and analysis of a five-step copper-chlorine thermochemical water decomposition cycle for sustainable hydrogen production

2014 ◽  
Vol 38 (11) ◽  
pp. 1391-1402 ◽  
Author(s):  
Mehmet F. Orhan ◽  
Ibrahim Dincer ◽  
Marc A. Rosen
Keyword(s):  
Hydrogen Production ◽  
Process Simulation ◽  
Water Decomposition

scholarly journals Comparative studies of Cu-Cl Thermochemical Water Decomposition Cyles for Hydrogen Production

2018 ◽  
Vol 61 ◽  
pp. 00009
Author(s):  
Funmilayo Osuolale ◽  
Oladipupo Ogunleye ◽  
Mary Fakunle ◽  
Abdulfataah Busari ◽  
Yetunde Abolanle
Keyword(s):  
Hydrogen Production ◽  
Exergy Analysis ◽  
Energy Analysis ◽  
Chemical Species ◽  
Efficiency Improvement ◽  
Water Decomposition ◽  
Step Cycle ◽  
Efficiency Increase ◽  
Production Stages ◽  
Parametric Studies

This research focuses on thermodynamic analysis of the copper chlorine cycles. The cycles were simulated using Aspen Plus software. All thermodynamic data for all the chemical species were defined from literature and the reliability of other compounds in the simulation were ascertained. The 5-step Cu–Cl cycle consist of five steps; hydrolysis, decomposition, electrolysis, drying and hydrogen production. The 4-step cycle combines the hydrolysis and the drying stage of the 5-step cycle to eliminate the intermediate production and handling of copper solids. The 3-step cycle has hydrolysis, electrolysis and hydrogen production stages. Exergy and energy analysis of the cycles were conducted. The results of the exergy analysis were 59.64%, 44.74% and 78.21% while that of the energy analysis were 50%, 49% and 35% for the 5-step cycle, 4-step cycle and 3-step cycle respectively. Parametric studies were conducted and possible exergy efficiency improvement of the cycles were found to be between 59.57-59.67%, 44.32-45.67% and 23.50-82.10% for the 5-step, 4-step and 3-step respectively. The results from the parametric analysis of the simulated process could assist ongoing efforts to understand the thermodynamic losses in the cycle, to improve efficiency, increase the economic viability of the process and to facilitate eventual commercialization of the process.

scholarly journals Valorization of OFMSW Digestate-Derived Syngas toward Methanol, Hydrogen, or Electricity: Process Simulation and Carbon Footprint Calculation

Processes ◽  
2020 ◽  
Vol 8 (5) ◽  
pp. 526 ◽  
Author(s):  
Aristide Giuliano ◽  
Enrico Catizzone ◽  
Cesare Freda ◽  
Giacinto Cornacchia
Keyword(s):  
Hydrogen Production ◽  
Process Simulation ◽  
Carbon Capture ◽  
Combustion Engine ◽  
Co2 Storage ◽  
Carbon Capture And Storage ◽  
Simulation Software ◽  
Added Value ◽  
Electricity Production ◽  
Methanol Production

This paper explores a possible waste-based economy transition strategy. Digestate from the organic fraction of municipal solid waste (OFMSW) is considered, as well as a low-added value product to be properly valorized. In this regard, air gasification may be used to produce syngas. In this work, the production of methanol, hydrogen, or electricity from digestate-derived syngas was assessed by ChemCAD process simulation software. The process scheme of methanol production comprises the following parts: water gas shift (WGS) with carbon capture and storage units (CCS), methanol synthesis, and methanol purification. In the case of hydrogen production, after WGS-CCS, hydrogen was purified from residual nitrogen by pressure swing absorption (PSA). Finally, for electricity production, the digestate-derived syngas was used as fuel in an internal combustion engine. The main objective of this work is to compare the proposed scenarios in terms of CO2 emission intensity and the effect of CO2 storage. In particular, CCS units were used for methanol or hydrogen production with the aim of obtaining high equilibrium yield toward these products. On the basis of 100 kt/year of digestate, results show that the global CO2 savings were 80, 71, and 69 ktCO2eq/year for electricity, methanol, and hydrogen production, respectively. If carbon storage was considered, savings of about 105 and 99 ktCO2eq/year were achieved with methanol and hydrogen production, respectively. The proposed scenarios may provide an attractive option for transitioning into methanol or hydrogen economy of the future.

Process simulation of hydrogen production from bio-oil using iCON

2016 ◽  
Vol 38 (5) ◽  
pp. 730-736 ◽  
Author(s):  
Murni M. Ahmad ◽  
Abrar Inayat ◽  
Laveena M. Chugani ◽  
Suzana Yusup
Keyword(s):  
Hydrogen Production ◽  
Process Simulation ◽  
Bio Oil

Coal-Direct Chemical Looping Gasification for Hydrogen Production: Reactor Modeling and Process Simulation

2012 ◽  
Vol 26 (6) ◽  
pp. 3680-3690 ◽  
Author(s):  
Liang Zeng ◽  
Feng He ◽  
Fanxing Li ◽  
Liang-Shih Fan
Keyword(s):  
Hydrogen Production ◽  
Process Simulation ◽  
Chemical Looping ◽  
Reactor Modeling
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