Simulations and Optimization of a Reduced CO2 Emission Process for Methanol Production Using Syngas from Bi-reforming
| Autor: | Tejas Bhatelia, Christopher Acquarola, Min Ao, Milinkumar T. Shah, Vishnu Pareek, Baranivignesh Prakash, Solomon Aladja Faka |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Work (thermodynamics)
Materials science business.industry 020209 energy General Chemical Engineering Energy Engineering and Power Technology 02 engineering and technology chemistry.chemical_compound Fuel Technology 020401 chemical engineering chemistry Scientific method 0202 electrical engineering electronic engineering information engineering Production (economics) Methanol 0204 chemical engineering Process engineering business Syngas |
| Zdroj: | Acquarola, C, Prakash, B, Bhatelia, T, Pareek, V, Faka, S & Shah, M 2021, ' Simulations and Optimization of a Reduced CO 2 Emission Process for Methanol Production Using Syngas from Bi-reforming ', Energy & Fuels, vol. 35, no. 10, pp. 8844-8856 . https://doi.org/10.1021/acs.energyfuels.1c00227 |
| ISSN: | 1520-5029 0887-0624 |
| DOI: | 10.1021/acs.energyfuels.1c00227 |
| Popis: | A low CO2 emission process for methanol production using syngas generated by combined H2O and CO2 reforming with CH4 (bi-reforming) is proposed in this work. A detailed process model was developed using Aspen Plus. The operating conditions of the bi-reforming and methanol synthesis were derived from a detailed sensitivity analysis using plug flow reactor models with Langmuir–Hinshelwood–Hougen–Watson (LHHW) kinetics. A molar feed ratio of CH4:CO2:H2O of 1:1:2, instead of conventional 3:1:2 in the bi-reforming was found to be optimum and resulted in ∼99% conversion of CH4, 44% conversion of CO2, and a H2/CO ratio of 1.78 at 910 °C and 7 bar. A higher methane conversion eliminated the need for cryogenic separation of CH4. The optimum feed ratio of 1:1:2 resulted in an ∼33% higher consumption of CO2 per mole of CH4 required than the conventional process. An acid gas removal process using MDEA was used for CO2 separation, and a network of heat exchangers was configured for heat recovery. The proposed process resulted in ∼0.37 tonne of CO2 per tonne of methanol, which is ∼2–4 times lower than several published data and commercial methanol processes. |
| Databáze: | OpenAIRE |
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