EXPERIMENTAL STUDIES OF METHANOL SYNTHESIS FROM NITROGEN-BALLASTED SYNTHESIS GAS
| Autor: | Yuriy V. Zagashvili, Aleksey M. Kuzmin, Vladimir V. Imshenetsky, Iosif I. Lishchiner, Olga V. Malova |
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| Jazyk: | ruština |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Известия Томского политехнического университета: Инжиниринг георесурсов, Vol 332, Iss 7, Pp 140-147 (2021) |
| Druh dokumentu: | article |
| ISSN: | 24131830 2500-1019 2413-1830 |
| DOI: | 10.18799/24131830/2021/7/3272 |
| Popis: | The research relevance is caused by the lack of knowledge of methanol synthesis from nitrogen-rich synthesis gas, as well as the lack of experimental data about the effect of the synthesis gas composition on crude methanol, its quality, quantity and the composition of tale gases. The problem is particularly important for low-tonnage methanol production plants in field conditions using the technology of synthesis gas production by partial oxidation of natural gas with air. The aim of the research is to confirm experimentally the possibility of methanol synthesis from nitrogen-rich synthesis gas and to obtain objective estimates of productivity, to evaluate the effect of the temperature of the synthesis, composition and parameters of nitrogen-blasted synthesis gas on the quantity and quality of crude methanol, and the composition of tale gases. Objects: nitrogen-rich synthesis gas and its reactivity to the synthesis of methanol depending on the synthesis temperature, composition and parameters of synthesis gas – molar ratios of components and factorial (module). Methods: experimental laboratory studies of methanol synthesis with the «ZüdChemie» C-79-7GL catalyst in an isothermal flow reactor. Results. The possibility of synthesizing methanol from nitrogen-rich synthesis gas obtained by partial oxidation of natural gas with air has been experimentally confirmed. At pressure of 4,0–4,2 MPa, volume velocity of 1100 h–1, for various average temperatures of 210, 220, and 230 °C of synthesis and two different raw mixtures the authors have determined the yields of crude methanol, the content of water and impurities in crude methanol, the compositions and parameters of gases leaving the reactor, and the carbon conversion. The optimal synthesis temperature and acceptable temperature variations in the catalyst layer are specified. The paper introduces the recommendations for process parameters in the three-reactor flow units of methanol synthesis and the estimation of their productivity when using the nitrogen-rich synthesis gas. |
| Databáze: | Directory of Open Access Journals |
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