Methanol Synthesis from Syngas: a Process Simulation
DOI:
https://doi.org/10.3384/ecp21185444Keywords:
methanol synthesis, Aspen Plus, process simulation, CO₂ mitigation, distillationAbstract
Methanol is one of the major candidates to take over the petroleum based liquid transportation fuel. Methanol synthesis from syngas is proposed in this paper. The Aspen Plus simulation software was used to simulate the conversion process from syngas into methanol. A CSTR reactor with defined reaction kinetics was taken at 40 bar and 270°C to simulate the methanol synthesis. Hydrogen recycles gave an increase of 50.4% in the production of methanol as compared to the results without a H₂ recycle stream. The conversion of CO, CO₂ and H₂ are 50.4%, 99.8% and 100% respectively for the case with the H₂ recycle. Considering an operation of 8600 hr/year, the annual mass production of methanol is equal to 96492 tonnes for a feed rate of 154972 t/year. A distillation column is used to separate the methanol from water. Simulations were performed to calculate the minimum number of stages for the different recovery ratios of methanol in distillate and the required molar reflux ratio versus the purity of methanol in the distillate. The column temperature and the composition profile were analyzed for the column. The model provides the insights of the methanol synthesis plants for a specific quality and the quantity of methanol production.References
S. Al-Sobhi and A. Elkamel. Simulation and optimization of natural gas processing and production network consisting of LNG, GTL, and methanol facilities. Journal of Natural Gas Science and Engineering 23, 500-508, 2015. doi.org/10.1016/j.jngse.2015.02.023.
X. Cui and S. K. Kær. A comparative study on three reactor types for methanol synthesis from syngas and CO2. Chemical Engineering Journal, 393, 124632, 2020. doi.org/10.1016/j.cej.2020.124632.
O. Dessens, G. Anandarajah and A. Gambhir. Limiting global warming to 2° C: What do the latest mitigation studies tell us about costs, technologies and other impacts? Energy Strategy Reviews, 13, 67-76, 2016. doi.org/10.1016/j.esr.2016.08.004.
S. Hoseiny, Z. Zare, A. Mirvakili, P. Setoodeh and M. Rahimpour. Simulation–based optimization of operating parameters for methanol synthesis process: application of response surface methodology for statistical analysis. Journal of Natural Gas Science and Engineering, 34, 439-448, 2016. doi.org/10.1016/j.jngse.2016.06.075.
Y. B. Kagan, L. Liberov, E. Slivinskii, S. Loktev, G. Lin, A. Y. Rozovskii, and A. Bashkirov. Mechanism of methanol synthesis from carbon dioxide and hydrogen.[Tracer study of conversion over Cu--Zn--aluminium oxide SNM-1 catalyst]. Dokl. Chem.(Engl. Transl.);(United States), 221. 1975
A. K. Kralj, and P. Glavič. Multi-criteria optimization in a methanol process. Applied Thermal Engineering, 29(5-6), 1043-1049, 2009. doi.org/10.1016/j.applthermaleng.2008.05.015.
P. Kumari and B. Mohanty. Maximization of hydrogen production from pine needles steam gasification based on response surface methodology. Biomass Conversion and Biorefinery, 1-14, 2020. doi.org/10.1007/s13399-020-00761-7.
J.-P. Lange. Methanol synthesis: a short review of technology improvements. Catalysis Today, 64(1-2), 3-8, 2001. doi.org/10.1016/S0920-5861(00)00503-4.
C. Li, H. Bai, Y. Lu, J. Bian, Y. Dong, and H. Xu. Life-cycle assessment for coal-based methanol production in China. Journal of Cleaner Production, 188, 1004-1017, 2018. doi.org/10.1016/j.jclepro.2018.04.051.
W. L. Luyben. Design and control of a methanol reactor/column process. Industrial & Engineering Chemistry Research, 49(13), 6150-6163, 2010. doi.org/10.1021/ie100323d.
F. Manenti, S. Cieri, and M. Restelli. Considerations on the steady-state modeling of methanol synthesis fixed-bed reactor. Chemical Engineering Science, 66(2), 152-162, 2011. doi.org/10.1016/j.ces.2010.09.036.
F. Nestler, M. Krüger, J. Full, M. J. Hadrich, R. J. White, and A. Schaadt. Methanol synthesis–industrial challenges within a changing raw material landscape. Chemie Ingenieur Technik, 90(10), 1409-1418, 2018. doi.org/10.1002/cite.201800026.
G. A. Olah. Beyond oil and gas: the methanol economy. Angewandte Chemie International Edition, 44(18), 2636-2639, 2005. doi.org/10.1002/anie.200462121.
F. G. Ortiz, A. Serrera, S. Galera, and P. Ollero. Methanol synthesis from syngas obtained by supercritical water reforming of glycerol. Fuel, 105, 739-751, 2013. doi.org/10.1016/j.fuel.2012.09.073.
J. H. Pauls, N. Mahinpey, and E. Mostafavi. Simulation of air-steam gasification of woody biomass in a bubbling fluidized bed using Aspen Plus: A comprehensive model including pyrolysis, hydrodynamics and tar production. Biomass and bioenergy, 95, 157-166, 2016. doi.org/10.1016/j.biombioe.2016.10.002.
M. Puig-Gamero, J. Argudo-Santamaria, J. Valverde, P. Sánchez, and L. Sanchez-Silva. Three integrated process simulation using aspen plus®: Pine gasification, syngas cleaning and methanol synthesis. Energy conversion and management, 177, 416-427, 2018. doi.org/10.1016/j.enconman.2018.09.088.
V. S. Sikarwar, M. Zhao, P. S. Fennell, N. Shah, and E. J. Anthony. Progress in biofuel production from gasification. Progress in Energy and Combustion Science, 61, 189-248, 2017. doi.org/10.1016/j.pecs.2017.04.001.
É. S. Van-Dal, and C. Bouallou. Design and simulation of a methanol production plant from CO2 hydrogenation. Journal of Cleaner Production, 57, 38-45, 2013. doi.org/10.1016/j.jclepro.2013.06.008.
X. Wu, J. Lang, Y. Jiang, Y. Lin, and Y. H. Hu. Thermo–Photo Catalysis for Methanol Synthesis from Syngas. ACS Sustainable Chemistry & Engineering, 7(23), 19277-19285, 2019. doi.org/10.1021/acssuschemeng.9b05657.
S. Yang, B. Li, J. Zheng, and R. K. Kankala. Biomass-to-Methanol by dual-stage entrained flow gasification: Design and techno-economic analysis based on system modeling. Journal of Cleaner Production, 205, 364-374, 2018. doi.org/10.1016/j.jclepro.2018.09.043.
C. Wu-Hsun. Methanol Production and Use. Dekker, 1994.
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Copyright (c) 2022 Ramesh Timsina, Rajan K. Thapa, Britt M. E. Moldestad, Marianne S. Eikeland
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