Technoeconomic Assessment of an Advanced Aqueous Ammonia-Based Postcombustion Capture Process Integrated with a 650-MW Coal-Fired Power Station
| Autor: | Kangkang Li, Moses O. Tadé, Leigh Wardhaugh, Shuiping Yan, Hai Yu, Paul Feron |
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| Rok vydání: | 2016 |
| Předmět: |
Engineering
Power station Waste management business.industry 020209 energy Process (computing) Water Process design 02 engineering and technology General Chemistry Energy consumption Carbon Dioxide Ammonia chemistry.chemical_compound Coal chemistry 0202 electrical engineering electronic engineering information engineering Environmental Chemistry Capital cost Baseline (configuration management) business Tonne Power Plants |
| Zdroj: | Environmental Science & Technology. 50:10746-10755 |
| ISSN: | 1520-5851 0013-936X |
| Popis: | Using a rigorous, rate-based model and a validated economic model, we investigated the technoeconomic performance of an aqueous NH3-based CO2 capture process integrated with a 650-MW coal-fired power station. First, the baseline NH3 process was explored with the process design of simultaneous capture of CO2 and SO2 to replace the conventional FGD unit. This reduced capital investment of the power station by US$425/kW (a 13.1% reduction). Integration of this NH3 baseline process with the power station takes the CO2-avoided cost advantage over the MEA process (US$67.3/tonne vs US$86.4/tonne). We then investigated process modifications of a two-stage absorption, rich-split configuration and interheating stripping to further advance the NH3 process. The modified process reduced energy consumption by 31.7 MW/h (20.2% reduction) and capital costs by US$55.4 million (6.7% reduction). As a result, the CO2-avoided cost fell to $53.2/tonne: a savings of $14.1 and $21.9/tonne CO2 compared with the NH3 baseline and a... |
| Databáze: | OpenAIRE |
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