On the effects of hydrogen addition in premixed formaldehyde flames
| Autor: | Dong Liu, Minye Luo |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Atmospheric pressure
Hydrogen Renewable Energy Sustainability and the Environment Radical 05 social sciences Kinetic analysis Inorganic chemistry Formaldehyde Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Mole fraction Dilution Chemical effects chemistry.chemical_compound Fuel Technology chemistry 0502 economics and business 050207 economics 0210 nano-technology |
| Zdroj: | International Journal of Hydrogen Energy. 42:3824-3832 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2016.07.046 |
| Popis: | The influences of hydrogen addition on laminar premixed fuel-rich formaldehyde flames at the atmospheric pressure are studied by the detailed kinetic analysis. The chemical effects of hydrogen addition on flame structures, mole fractions of major species and free radicals are distinguished clearly from the dilution and thermal effects. The results show that the H2 chemical effects can promote the oxidation of formaldehyde and make the mole fraction profile of formaldehyde move toward the upstream side. The increase of H radical concentration is mainly due to the chemical effects of hydrogen addition. The reaction OH + H2 = H + H2O plays a major role in the productions of H and OH radicals. The productions of O, HCO and HO2 radicals are enhanced by the H2 chemical effects. However, the hydrogen dilution and thermal effects on decreasing these radicals' concentrations are more dominant. The mole fractions of CO and CO2 decrease with H2 addition. The H2 chemical effects facilitate the formation of CO, but suppress the production of CO2. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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