Conceptual design and analysis of a novel system based on ash agglomerating fluidized bed gasification for co-production of hydrogen and electricity
| Autor: | Weihong Jiao, Yitian Fang, Rongtao Feng, Zheyu Liu, Guang Li, Zhiqing Wang |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Exergy
Air separation Waste management Renewable Energy Sustainability and the Environment business.industry 020209 energy 05 social sciences Anthracite Energy Engineering and Power Technology 02 engineering and technology Condensed Matter Physics Pressure swing adsorption Fuel Technology Fluidized bed 0502 economics and business 0202 electrical engineering electronic engineering information engineering Exergy efficiency Environmental science Coal 050207 economics business Rectisol |
| Zdroj: | International Journal of Hydrogen Energy. 43:1980-1988 |
| ISSN: | 0360-3199 |
| Popis: | In this paper, a novel system with ash agglomerating fluidized bed gasification and CO2 capture to produce hydrogen and electricity is firstly designed in Aspen Plus. The newly-proposed system is composed of eight subsystems, namely air separation unit, gasification unit, water gas shift unit, Rectisol unit, CO2 compression unit, Claus unit, pressure swing adsorption unit, gas and steam turbine unit. The thermodynamic performance and hydrogen to coal ratio of the new proposed system are investigated. The results demonstrate that the hydrogen to coal ratio, energy efficiency, net electricity power and exergy efficiency of the overall system for Yangcheng anthracite are 0.096 kg/kg, 46.52%, 1.71 MW and 43.92%, respectively. Additionally, the exergy destruction ratio and exergy efficiency of each subsystem are researched. More importantly, the influences of the oxygen to coal ratio, steam to coal ratio and coal types on the hydrogen to coal ratio, energy efficiency and exergy efficiency are also studied. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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