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Performance Assessment of Co-Gasification Process for Syngas Production Using Multi-Biomass Feedstocks
(2026-06-15)
Wiranarongkorn, Kunlanan
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Detchusananard, Thanaphorn
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Piroonlerkgul, Pakorn
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Im-orb, Karittha
The investigation focused on alternative energy production from biomass residuals, predominantly located in Northern Thailand, for year-round utilization. The biomass gasification model was created in Aspen Plus. The cassava stalk served as a foundational biomass for blending with additional materials. Increased equivalent ratio (ER) increased syngas yield, while higher gasifying temperatures decreased it. The total energy demand rose with increasing ER, whereas it decreased with higher gasifying temperatures. The gasification process may transition from exothermic to endothermic when the ER exceeds 0.25. The effect of mixing ratio of 1) cassava stalk and 2) rice straw, or 3) cane stalks, or 4) corn stalk at 1:0, 4:1, 3:2, and 2:3 on the gasification performance was investigated. The maximum syngas yield of all mixture cases at each gasifying temperature was achieved at mixing ratio of 2:3 and ER of 0.3. This study discovered blending cassava stalk with seasonal leftovers like rice straw, cane stalks, and corn stalks in a 2:3 ratio generated outstanding syngas year-round in Thailand. For the blended biomass feed rate of 10 kg/h, the maximum syngas yield of 0.356 kmol/h was achieved for the mixture of cassava stalk and rice straw at a gasifying temperature of 900°C.
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Assessment of bio-methanol and electricity co-production via the integration of biomass-to-methanol process, solid oxide electrolyzer, and power generator
(2025-11-01)
Detchusananard, Thanaphorn
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Wiranarongkorn, Kunlanan
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Im-orb, Karittha
The performance assessment of an integrated biomass to methanol and solid oxide electrolyzer with and without a power generation unit (BtM-SOEC-PG and BtM-SOEC), utilizing purge gas from BtM for production of bio-methanol and electricity, is performed. For BtM-SOEC-PG, two utilization routes of low pressure (LP) steam leaving the power generation system (case 1: LP steam is exported to external users (BtM-SOEC-PG-LPEX) and case 2: LP steam is utilized in the process (BtM-SOEC-PG-LPUT)) are examined to determine the impact on process performance of recycling purge gas from BtM to either the methanol reactor or the power generation unit. In all cases, the bio-methanol production increases with increased purge gas recycling, whereas the power generation decreases. The direct CO<inf>2</inf> emissions are also improved with increased recycling. Two BtM-SOEC-PG cases are an exothermic process, and the degree of exothermicity increased with purge gas recycling. However, the BtM-SOEC-PG-LPUT with 90 % purge gas recycling offers a maximum methanol production rate of 15.99 kg/h, and under these conditions, 3.17 kW of electricity is generated and 56.18 % energy efficiency is obtained. The energy efficiency of the BtM-SOEC-PG-LPUT, with 90 % purge gas recycling, could potentially be enhanced by 10.42 % due to pinch analysis and heat exchanger network (HEN) design. Exergy analysis indicates that the gasifier is the primary unit of exergy destruction, followed by the combustion unit and the autothermal reformer (ATR) in the second and third positions, respectively. Furthermore, the BtM-SOEC-PG-LPUT with 90 % purge gas recycling offers a competitive cost of bio-methanol (824.37 USD/ton) compared to BtM-SOEC.
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Sustainable Production of Biomethanol and Its Environmental Impacts
(2025-01-01)
Detchusananard, Thanaphorn
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Im-Orb, Karittha
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Wiranarongkorn, Kunlanan
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Chen, Yong Song
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Arpornwichanop, Amornchai
Utilizing biomass and biogas sourced from various organic waste materials as renewable feedstocks for biomethanol production offers a sustainable alternative to fossil fuels such as coal, petroleum oil, and natural gas. This chapter provides an exploration of several technologies employed in biomethanol production, including biomass gasification, biomass pyrolysis, and biogas upgrading. Syngas production and conditioning, methanol synthesis and separation, and integrating systems with other renewable energy sources are found to be crucial stages towards achieving sustainable production. The chapter comprehensively evaluates the technical, economic, and environmental aspects of each biomethanol production process. Furthermore, it delves into ongoing efforts to improve and develop biomethanol-production processes to achieve the carbon neutrality goals. The chapter also outlines emerging trends and future research directions in the field of biomethanol production.
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Techno-economic performance analysis of biomass-to-methanol with solid oxide electrolyzer for sustainable bio-methanol production
(2024-12-30)
Detchusananard, Thanaphorn
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Wiranarongkorn, Kunlanan
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Im-orb, Karittha
The analysis of the technical and economic performance of an integrated biomass to methanol and solid oxide electrolysis process (BtM-SOEC) is studied to find more sustainable process of bio-methanol production. The oil palm empty fruit branch (EFB) which is abundant in Thailand is used as biomass feedstock. Modeling of the BtM-SOEC is done using Aspen Plus. For technical aspects, the production rate of oxygen and hydrogen from the SOEC can be enhanced through an appropriate adjustment of the number of cells and cell temperature. The BtM-SOEC offers higher methanol yield and overall efficiency, while consumes less energy than the conventional biomass to methanol process (BtM). The maximum methanol production rate of 0.4995 kmol hr−1 derived from BtM-SOEC is achieved at a number of cells of 325 cells and a cell temperature of 700 °C, at this condition the overall efficiency is 64.79 %. The economic assessment indicates that the conventional BtM and BtM-SOEC are still not economically feasible. However, the conventional BtM is more economically feasible than the BtM-SOEC. The methanol cost of BtM-SOEC can turn out to be economically feasible when renewable electricity cost and SOEC cost decrease substantially. The methanol cost of the BtM-SOEC (620 USD ton−1) can be competitive to that of the BtM (703 USD ton−1) when the cost of input renewable electricity decreases by 80 %. Consequently, this research highlights the potential of BtM-SOEC from agricultural residues for sustainable bio-methanol production in the future market condition that the cost of renewable electricity tends to continuously decrease with the technology development and increased technology adoption and the carbon policy tends to be tightened to relieve global warming.
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Process Analysis of Integrated Biomass Gasification and Solid Oxide Electrolysis Cell (SOEC) for Syngas Production
(2023-01-01)
Detchusananard, Thanaphorn
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Wiranarongkorn, Kunlanan
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Im-Orb, Karittha
The integrated biomass gasification and SOEC process (IBG-SOEC), which O2 from SOEC was used as gasifying agent while the separated H2 could be used for H2/CO adjustment or sell as a valuable byproduct, was studied to find the sustainable syngas production process. The model of IBG-SOEC was developed in Aspen Plus. The parametric analysis was performed to investigate the effect of operating conditions of SOEC (i.e., cell temperature and number of cells) on the overall process performance. For energy performance, the total energy demand decreased as cell temperature increased while increased with number of cells. The changes in cell temperature had no effect on the yield and composition of syngas from gasifier. The maximum yield of syngas, with H2/CO of 0.96, of 1.9 kmol/h was achieved at cell temperature of 790°C and number of cells of 600. At this condition, the overall efficiency of IBG-SOEC of 63 % was achieved and H2 byproduct of 1 kmol/h could obtained from SOEC.
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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
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Prasertcharoensuk, Phuet
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Patcharavorachot, Yaneeporn
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Maréchal, François
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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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Analysis of the sorption-enhanced chemical looping biomass gasification process: Performance assessment and optimization through design of experiment approach
(2020-09-15)
Detchusananard, Thanaphorn
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Im-orb, Karittha
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Maréchal, François
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Arpornwichanop, Amornchai
In this study, the performance of high-purity hydrogen production through the sorption-enhanced chemical looping gasification (SECLG) process, involving a gasifier, calciner, and air reactor, was investigated. In this process, the biomass feedstock was wood residue, and steam, calcium oxide (CaO), and nickel oxide (NiO) were used as a gasifying agent, CO<inf>2</inf> sorbent, and oxygen carrier, respectively. First, the influences of key operational parameters (i.e., steam to carbon (S/C) molar ratio, gasifying temperature, and NiO to carbon (NiO/C) molar ratio) on product gas yields and net energy consumption of the process were studied. According to the first and second laws of thermodynamics, performance indicators of the SECLG process demonstrated that increases in energy and exergy efficiencies occurred with increases in S/C molar ratio and/or gasifying temperature. Then, mathematical models indicative of correlations between energy efficiency, exergy efficiency, and major operating parameters (e.g., S/C molar ratio and gasifying temperature) were developed through the design of experiment (DOE) method and used for process optimization. The optimal conditions offering maximum energy (70%) and exergy (56%) efficiencies were a S/C molar ratio of 4.5 and gasifying temperature of 700 °C, under which all reactors operated at thermal self-sufficient conditions.

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