Reduction gas obtaining with low content of impurities by two-stage natural gas conversion
| Autor: | G. Nie, A. Sviatenko, A.A. Nebesniy, D.S. Filonenko, V. Kotov, A.I. Khovavko |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Thermodynamic equilibrium Materials Science (miscellaneous) Overheating (economics) 02 engineering and technology 010402 general chemistry 01 natural sciences Chemical reaction Catalysis chemistry.chemical_compound Impurity Natural gas Electrical and Electronic Engineering Physical and Theoretical Chemistry business.industry Cell Biology 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics 0104 chemical sciences Chemical engineering chemistry Carbon dioxide 0210 nano-technology business Water vapor Biotechnology |
| Zdroj: | Applied Nanoscience. 12:907-912 |
| ISSN: | 2190-5517 2190-5509 |
| DOI: | 10.1007/s13204-021-01820-9 |
| Popis: | Reduction gases are widely used in the metallurgical, chemical and other industries. In this paper, the possibility of higher-quality reduction gas production using a two-stage technology is considered. It is proposed to use air conversion of natural gas with cooling and drying of the obtained products at the first stage. At the second stage, gas mixture is heated, treated in the catalyst bed, quenched and dried. It is established that the temperature of heat treatment of the gas mixture at the second stage should be at least 850–950 °C. This allows to increase the ratio (CO − H2)/CO2 in the resulting reduction gas. The minimum gas treatment temperature at the second stage is calculated depending on the pressure in the system. By overheating the gas before it enters the catalyst bed in the second stage, it is possible to compensate for the heat required for chemical reactions in temperatures above 850 °C, the total thermal effect of chemical reactions is determined. The total heat effect of chemical reactions depending on the temperature of gas heat treatment at different pressure is defined. |
| Databáze: | OpenAIRE |
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