A thermodynamic analysis of biogas-to-methanol conversion with CH4 recycling and CO2 utilization using Aspen HYSYS

2021 ◽  
Author(s):  
Pali Rosha ◽  
Sandeep Kumar ◽  
Hussameldin Ibrahim
Keyword(s):  
Thermodynamic Analysis ◽  
Methanol Conversion ◽  
Renewable Fuels ◽  
Co2 Utilization ◽  
Aspen Hysys ◽  
Hydrocarbon Reforming

Hydrocarbon reforming routes are renowned for producing a multitude of energy-effective renewable fuels and/or chemicals.

Process Modelling, Thermodynamic Analysis and Optimization of Dry Reforming, Partial Oxidation and Auto-Thermal Methane Reforming for Hydrogen and Syngas production

2015 ◽  
Vol 10 (4) ◽  
pp. 211-220 ◽  
Author(s):  
Bamidele V. Ayodele ◽  
Chin Kui Cheng
Keyword(s):  
Hydrogen Production ◽  
Thermodynamic Analysis ◽  
Partial Oxidation ◽  
Desirability Function ◽  
Experimental Studies ◽  
Dry Reforming ◽  
Process Modelling ◽  
Syngas Production ◽  
Aspen Hysys ◽  
Partial Oxidation Reforming

Abstract In this work, process modelling, thermodynamic analysis and optimization of stand-alone dry and partial oxidation reforming of methane as well as, the auto-thermal reforming processes were investigated. Firstly, flowsheet models were developed for both the stand-alone systems and auto-thermal reforming process using ASPEN HYSYS®. Furthermore, thermodynamic studies were conducted for the stand-alone and auto-thermal reforming processes for temperatures range of 200–1000°C and pressure range of 1–3 bar using Gibbs free energy minimization methods which was also performed using ASPEN HYSYS®. The simulation of the auto-thermal reforming process was also performed at 20 bar to mimic industrial process. Process parameters were optimized in the combined reforming process for hydrogen production using desirability function. The simulation results show that 84.60 kg/h, 62.08 kg/h and 154.7 kg/h of syngas were produced from 144 kg/h, 113 kg/h and 211 kg/h of the gas fed into the Gibbs reactor at CH4/CO2/O2 ratio 1:1:1 for the stand-alone dry reforming, partial oxidation reforming and auto-thermal processes respectively. Equilibrium conversion of CH4, CO2, O2 were thermodynamically favoured between 400 and 800°C with highest conversions of 100%, 95.9% and 86.7% for O2, CO2 and CH4 respectively. Highest yield of 99% for H2 and 40% for CO at 800°C was obtained. The optimum conditions for hydrogen production were obtained at CH4/CO2, CH4/O2 ratios of 0.634, 0.454 and temperature of 800°C respectively. The results obtained in this study corroborate experimental studies conducted on auto-thermal reforming of methane for hydrogen and syngas production.

scholarly journals Conceptual Design Development of a Fuel-Reforming System for Fuel Cells in Underwater Vehicles

Energies ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 2000
Author(s):  
Seung-Kyo Jung ◽  
Won-Sim Cha ◽  
Yeong-In Park ◽  
Shin-Hyung Kim ◽  
Jungho Choi
Keyword(s):  
Fuel Cells ◽  
Separation Efficiency ◽  
Methanol Conversion ◽  
Underwater Vehicles ◽  
Hydrogen Yield ◽  
Design Development ◽  
Fuel Reforming ◽  
Aspen Hysys ◽  
Endothermic Reactions ◽  
High Separation

An air-independent propulsion system containing fuel cells is applied to improve the operational performance of underwater vehicles in an underwater environment. Fuel-reforming efficiently stores and supplies hydrogen required to operate fuel cells. In this study, the applicability of a fuel-reforming system using various fuels for underwater vehicles was analyzed by calculating the fuel and water consumptions, the amount of CO2 generated as a byproduct, and the amount of water required to dissolve the CO2 using aspen HYSYS (Aspen Technology, Inc., Bedford, MA, USA). In addition, the performance of the fuel-reforming system for methanol, which occupies the smallest volume in the system, was researched by analyzing performance indicators such as methanol conversion rate, hydrogen, yield and selectivity, and reforming efficiency under conditions at which pressure, temperature, steam-to-carbon ratio (SCR), and hydrogen separation efficiency vary. The highest reforming efficiency was 77.7–77.8% at 260 °C and 270 °C. At SCR 1.5, the reforming efficiency was the highest, which is 77.8%, and the CO2 generation amount was the lowest at 1.46 kmol/h. At high separation efficiency, the reforming efficiency increased due to the reduction of reactants, and a rate at which energy is consumed for endothermic reactions also decreased, resulting in a lower CO2 generation amount.

CO2 utilization for gasification of carbonaceous feedstocks: A thermodynamic analysis

2012 ◽  
Vol 83 ◽  
pp. 159-170 ◽  
Author(s):  
T. Renganathan ◽  
M.V. Yadav ◽  
S. Pushpavanam ◽  
R.K. Voolapalli ◽  
Y.S. Cho
Keyword(s):  
Thermodynamic Analysis ◽  
Co2 Utilization

Thermodynamic analysis of binding of p-substituted benzamidines to trypsin

2001 ◽  
Vol 268 (6) ◽  
pp. 1554-1560 ◽  
Author(s):  
Reinskje Talhout ◽  
Jan B. F. N. Engberts
Keyword(s):  
Thermodynamic Analysis

A Thermodynamic Analysis of Three and Four-Wheel Air Cycle Machines for Aeronautical Applications

2015 ◽  
Vol 9 (2) ◽  
pp. 190
Author(s):  
Meiriele A. Alvarenga ◽  
Claudia R. Andrade ◽  
Edson L. Zaparoli
Keyword(s):  
Thermodynamic Analysis
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