Patcharavorachot, Yaneeporn

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Patcharavorachot, Yaneeporn
Alternative Name
Patcharavorachot, Y.
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Email
yaneeporn.pa@kmitl.ac.th

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    Exergy and exergoeconomic assessment of sustainable light olefins production from an integrated methanol synthesis and methanol-to-olefins system
    (2022-05-01)
    Detchusananard, Thanaphorn
    ;
    Prasertcharoensuk, Phuet
    ;
    Patcharavorachot, Yaneeporn
    ;
    Maréchal, François
    ;
    Arpornwichanop, Amornchai
    Integrated methanol synthesis and methanol-to-olefins systems are considered attractive and promising technologies to produce light olefins from syngas derived from biomass feedstock. In this study, a flowsheet model of a proposed system was developed and employed for system design and analysis. The system consists of four main parts: methanol synthesis, methanol-to-olefins process, olefins separation, and power plant. The effects of important operating parameters on the exergy efficiency were investigated to determine the optimal operating conditions to achieve the maximum exergy efficiency of this system. The results indicate that the methanol synthesis process should be operated at temperature, pressure, and recycling ratio of 250 °C, 150 bar, and 0.85, respectively, whereas the methanol-to-olefins process should be operated at a temperature of 480 °C and the power plant should be run at steam temperature and steam pressure of 650 °C and 50 bar, respectively. Heat integration based on a pinch analysis was subsequently performed to improve the system energy usage, resulting in a 9.29% increase in the exergy efficiency of the integrated system. An exergoeconomic analysis of the integrated system with the designed heat exchanger network was performed. The results show that the power plant has the highest cost rate of exergy destruction and total cost rate. Moreover, the syngas feedstock cost has the greatest impact on the exergoeconomic indicators; it is necessary to minimize this cost to achieve economic viability of the process for industrial use. The production of light olefins from the integrated methanol synthesis and methanol-to-olefins system using a renewable syngas feedstock has a potential to reduce greenhouse gas emissions due to the use of renewable sources replacing fossil sources.
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    Operational Analysis of a Proton-Conducting Solid Oxide Electrolysis Cell for Synthetic Fuel Production
    (2021-01-01)
    Bhichaiphab, Jinjutha
    ;
    Saebea, Dang
    ;
    Arpornwichanop, Amornchai
    ;
    Patcharavorachot, Yaneeporn
    Methane and methanol as synthetic fuels can be produced from synthesis gas or syngas. A proton-conducting solid oxide electrolysis cell (H-SOEC) becomes a promising technology that can produce syngas from the co-electrolysis of steam and CO<inf>2</inf>. In this work, the synthetic fuel production from syngas produced by a H-SOEC was modelled and simulated through Aspen Plus simulation software. The composition of syngas and synthetic fuel were calculated by using the minimization of Gibbs free energy. Firstly, the steam to CO<inf>2</inf> (S/C) molar ratio in feed was determined to satisty the suitable stoichiometric number of each fuel. Further, the H-SOEC operating temperature was optimized. The simulation showed that at operation of H-SOEC as 650 °C and 1 atm, the optimal S/C molar ratio for methane and methanol productions is 4.69 and 3.52, respectively. Then, the effect of operation in fuel production was examined. The results indicated that methane flowrate of 0.2 kmol/h can be provided when reactor operates at 250 °C and 3 atm. For methanol production, 0.13 kmol/h of methanol can be generated at reactor operation as 250 °C and 80 atm. In addition, it was found that the methane production does not release CO and CO<inf>2</inf> to nature. Therefore, it can be concluded that the integrated system of H-SOEC and methane production is more attractive feature.
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    Methanation Process for Methane Synthesis from Waste Gas: Process Simulation
    (2022-01-01)
    Saebea, Dang
    ;
    Chatrattanawet, Narissara
    ;
    Soisuwan, Soipatta
    ;
    Arpornwichanop, Amornchai
    ;
    Patcharavorachot, Yaneeporn
    Waste gas from the fermentation of bioethanol production consists of high carbon dioxide concentration. The CO<inf>2</inf> emissions cause global climate change. The conversion of carbon dioxide to chemical products or fuels is an interesting solution for reducing the amount of carbon dioxide emissions. The methane synthesis via carbon dioxide methanation reaction has attracted much attention. The suitable operation of the methanation process for methane synthesis from waste gases should be studied. This work aims to investigate the methane production from the waste gas of the fermentation process. The composition of impurities in waste gases on the performance of the methanation process is investigated. The effects of hydrogen to carbon dioxide ratio and operating temperature on the carbon dioxide conversion and methane yield of the methanation are also studied. The simulation results from the thermodynamic analysis show that the methane yield of the methanation from waste gases is 3.11 - 4.61 % higher than that from pure carbon dioxide in the temperature range of 300 - 500 °C. The methane yield of the methanation process decreases with increasing temperature. The increase in the hydrogen to carbon dioxide ratio of 1 to 4 and the operating pressure of 1 to 8 bar have a significant effect on the enhancement of carbon dioxide conversion and methane yield.
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    Energetic, economic, and environmental perspectives on systematic design and energy management of a power-to-methane system integrated with power cycle
    (2025-12-01)
    Saebea, Dang
    ;
    Arpornwichanop, Amornchai
    ;
    Patcharavorachot, Yaneeporn
    The methanation process transforms CO<inf>2</inf> into green methane by combining it with hydrogen from solid oxide electrolysis cells (SOECs). Efficient energy management of the integrated system, along with effective heat utilization from methanation for power generation, enhances system efficiency. This study compares four configurations of a system incorporating SOECs, methanation, and the Rankine cycle, focusing on energetic, economic, and environmental performance. The impact of gas recycling in the adiabatic methanator on system performance was also investigated. Key findings reveal that incorporating a water separation unit and increasing the gas recycle ratio significantly improve methane yield and CO<inf>2</inf> utilization. Systems with water removal through heat integration achieve overall efficiencies of 50.17 to 52.27%. The levelized product cost of the system with water removal is lower, ranging from 195.27 to 223.05 $/MWh, and it produces the lowest CO<inf>2</inf> emission intensity at 119.91 kgCO<inf>2</inf> per MWhCH<inf>4</inf>.
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    Performance assessment of a 10 kW pressurized solid oxide fuel cell integrated with glycerol supercritical water reforming
    (2022-08-01)
    Patcharavorachot, Yaneeporn
    ;
    Chatrattanawet, Narissara
    ;
    Saebea, Dang
    ;
    Arpornwichanop, Amornchai
    In this work, the integrated system of pressurized solid oxide fuel cell (SOFC) and supercritical water reforming of glycerol was proposed. The syngas from the reforming process has high temperature and pressure and thus, it can be used as fuel for the SOFC. The performance of an integrated system was determined through the Aspen Plus simulator in which the electrochemical equations were also included. The developed model was employed to examine the performance of the integrated system with respect to the wider ranges of operation of the reformer and SOFC. In this work, the desired power output of an SOFC stack is set as 10 kW and thus, the area of an SOFC is determined. A smaller area is required as it normally leads to a lower fabrication cost for the SOFC. The simulation results revealed that the smallest SOFC area can be provided when the reformer is operated at 800°C and 240 atm with a ratio of supercritical water to glycerol as 50 whereas the SOFC operation is at 900°C and 4 atm with the current density as 7000 A/m<sup>2</sup>. Under these operating conditions, the integrated system can provide the cell voltage, required area, fuel utilization, and SOFC efficiency as 1 V, 1.42 m<sup>2</sup>, 75% and 61%, respectively. From the exergy analysis, it was found that the compressor, heater, and turbine are the highest exergy destruction units whereas the reformer has the lowest exergy destruction, followed by the SOFC stack.
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    Gasification of plastic waste for synthesis gas production
    (2020-02-01)
    Saebea, Dang
    ;
    Ruengrit, Pornnapat
    ;
    Arpornwichanop, Amornchai
    ;
    Patcharavorachot, Yaneeporn
    This work presents the synthesis gas production from gasification of plastic waste, i.e. polyethylene (PE) and polypropylene (PP). The steam gasification is modeled by using AspenPlus<sup>TM</sup> simulation software. The effects of gasifier temperature and steam to feed (S/F) mass ratio were examined to determine the suitable synthesis gas mole flow rate. The simulation results showed that gasifier should be operated at 900 °C with optimal S/F mass ratio as 1.5. Considering the influence of PE/PP mass ratio, the results indicated that the PE/PP mass ratio of 100/0 or pure PE can provide the maximum synthesis gas flow rate of 21 kmol/hr and H<inf>2</inf>/CO ratio of 2.1.
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    Simulation-based Assessment of 2,5 Furandicarboxylic Acid Production from Oxidation of 5-Hydroxymethylfurfural
    (2023-01-01)
    Saebea, Dang
    ;
    Soisuwat, Soipatta
    ;
    Arpornwichanop, Amornchai
    ;
    Patcharavorachot, Yaneeporn
    2,5 Furan dicarboxylic acid (FDCA) is a bio-based chemical that has the potential to replace petroleum-based chemicals. The production and use of FDCA have been shown to have less environmental impact compared to traditional petrochemicals. FDCA can be produced from 5-hydroxymethylfurfural which is synthesized by biomass. In FDCA production, the main reaction is the oxidation of HMF in an aqueous acetic solution. The study on the combined process of FDCA production and separation is important in the development of the FDCA production process on a commercial scale. This work aims to study the combined process and the performance assessment of FDCA production from the oxidation of HMF consisting of FDCA synthesis, FDCA separation, and solvent recovery. The Aspen Plus software was used for the simulation of the FDCA production process. Moreover, the performances of the FDCA production process using air and pure oxygen are compared. The simulation results indicated that the solvent recovery in the FDCA production process can increase the amount of FDCA product and decrease the amount of fresh water and acetic acid in the feed by 96.45% and 97.24%, compared to the system without solvent recovery. When considering the energy consumption of the process, the energy consumption of the air compressor is the highest at 63.52% of the total energy consumption. The use of a multi-stage compressor and pure oxygen as an oxidant in the FDCA production process can reduce the energy consumption of the process.
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    Integrated System of Solid Oxide Fuel Cell and Ethanol Partial Oxidation: Process Simulation and Heat Exchanger Network
    (2024-01-01)
    Saebea, Dang
    ;
    Thanomjit, Chollaphan
    ;
    Arpornwichanop, Amornchai
    ;
    Patcharavorachot, Yaneeporn
    A solid oxide fuel cell (SOFC) fueled by reformate obtained from an ethanol partial oxidation (POX) was investigated regarding electrical and the thermal performances. Performance analysis was performed through Aspen Plus simulator. Gas compositions obtained from POX and SOFC were computed through the Gibbs free energy minimization method. Three voltage losses that include activation, ohmic and concentration losses was considered in an electrochemical model. Effects of operating parameters in both POX and SOFC on performance of SOFC-POX system were examined. From the simulation results, it was found that the suitable condition of POX was at the reformer temperature of 700 ℃ and oxygen to ethanol molar ratio of 0.1. While, the operating temperature of SOFC should be 900 ℃. Under these operating conditions, the maximum electrical and thermal efficiencies of 67.24% and 25.77%, respectively, can be achieved. Finally, the heat integration of the SOFC-POX system was considered using pinch analysis. The minimum cold utility is 88.1 kW while the hot utility is no need for this system.
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    Thermodynamic analysis of a proton conducting SOFC integrated system fuelled by different renewable fuels
    (2021-03-19)
    Saebea, Dang
    ;
    Arpornwichanop, Amornchai
    ;
    Patcharavorachot, Yaneeporn
    This work proposes a power generation system consisting of steam reformer and SOFC–H<sup>+</sup> fuelled by different types of fuel, i.e., ethanol, glycerol and biogas. The performance analysis of integrated system is performed based on thermodynamic calculation through Aspen Plus simulator. The total of the Gibbs free energy minimization is used to determine product composition at equilibrium. The electrochemical model not only considers all voltage losses but also includes the effect of current leakage as a result from the electrolyte used. Considering the operating condition of steam reformer, it is found that the gas product contains the highest amount of hydrogen without the carbon formation when reformer is operated at 973 K with steam to carbon ratio of 1. In addition, the simulation results show that the SOFC–H<sup>+</sup> operated at 973 K and 1 A/cm<sup>2</sup> can provide a suitable compromise between system performances and exhaust gas composition. The use of glycerol reformate has the highest cell and system efficiencies and fuel utilization compared to the others. In addition, the integrated system fuelled by glycerol can release low CO amount whereas there is more heat provided to the surrounding. Therefore, it can be concluded that glycerol is suitable renewable fuel for SOFC–H<sup>+</sup> integrated system.
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    Performance analysis and optimization of a trigeneration process consisting of a proton-conducting solid oxide fuel cell and a LiBr absorption chiller
    (2023-02-28)
    Sornumpol, Ratikorn
    ;
    Arpornwichanop, Amornchai
    ;
    Patcharavorachot, Yaneeporn
    In this work, the trigeneration system, consisting of a proton-conducting solid oxide fuel cell (SOFC–H<sup>+</sup>) and a single-stage LiBr absorption chiller, was proposed. The SOFC–H<sup>+</sup> and single-stage LiBr absorption chiller models were developed through Aspen Plus V10. From the sensitivity analysis, the results show that increases in temperature and fuel utilization can improve the performance of the SOFC–H<sup>+</sup>. Conversely, the air to fuel (A/F) molar ratio and pressure negatively affect the electrical efficiency and overall system efficiency. In the case of the absorption chiller, the coefficient of performance was increased and made stable according to a constant value when the generator temperature was increased from 90 to 100 °C. When the optimization was performed, it was found that the SOFC–H<sup>+</sup> should be operated at 700 °C and 10 bar with fuel utilization of 0.8 and A/F molar ratio of 2 to achieve a maximum overall efficiency of 93.34%. For the energy and exergy analysis, a combined heat and power SOFC–H<sup>+</sup> was found to have the highest energy and exergy efficiencies, followed by the trigeneration process. This indicates that the integration of the SOFC–H<sup>+</sup> and LiBr absorption chiller is possible to efficiently produce electricity, heating and cooling.