Comparative study of the gasification of coal and its macerals and prediction of the synergistic effects under typical entrained-bed pulverized coal gasification Conditions
| Autor: | Xiang Luo, Mengxia Xu, Dengting Guo, Tao Wu, Peng Jiang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Pulverized coal-fired boiler
Renewable Energy Sustainability and the Environment business.industry Mechanical Engineering 0211 other engineering and technologies Maceral Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology Oxygen complex mixtures Fuel Technology Inertinite 020401 chemical engineering chemistry Liptinite Chemical engineering Geochemistry and Petrology otorhinolaryngologic diseases Coal 021108 energy 0204 chemical engineering business Vitrinite Syngas |
| ISSN: | 0195-0738 |
| Popis: | This research is focused on the gasification performance of coal and its corresponding macerals as well as on the interactions among macerals under typical gasification conditions by Aspen Plus modeling. The synergistic coefficient was employed to show the degree of interactions, while the performance indicators including specific oxygen consumption (SOC), specific coal consumption (SCC), cold gas efficiency (CGE), and effective syngas (CO + H2) content were used to evaluate the gasification process. Sensitivity analyses showed that the parent coal and its macerals exhibited different gasification behaviors at the same operating conditions, such as the SOC and SCC decreased in the order of inertinite > vitrinite > liptinite, whereas CGE changed in the order of liptinite > vitrinite > inertinite. The synergistic coefficients of SOC and SCC for the simulated coals were in the range of 0.94–0.97, whereas the synergistic coefficient of CGE was 1.05–1.13. Moreover, it was found that synergistic coefficients of gasification indicators correlated well with maceral contents. In addition, the increase in temperature was found to promote the synergistic coefficients slightly, whilst at an oxygen to coal mass ratio of 0.8 and a steam to coal mass ratio of 0.8, the highest synergistic coefficient was obtained. |
| Databáze: | OpenAIRE |
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