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Biomass-Based Integrated Gasification Combined Cycle With Post-Combustion Co2 Recovery by Potassium Carbonate: Techno-Economic and Environmental Analysis
Computers & Chemical Engineering ( IF 4.3 ) Pub Date : 2020-01-24 , DOI: 10.1016/j.compchemeng.2020.106758
Ikhlas Ghiat , Ahmed AlNouss , Gordon McKay , Tareq Al-Ansari

In this study, a thermodynamic model depicting integrated bioenergy with carbon capture and storage (BECCS) system is developed using Aspen Plus under thermodynamic equilibrium for the power generation segment, and a rate-based model for the carbon capture segment representing CO2 recovery from the exhaust flue of a biomass based integrated gasification combined cycle (BIGCC). A thorough techno-economic analysis is conducted for the integrated system to evaluate system-wide environmental impacts and economic costs. The carbon capture is modelled using post combustion technology with chemical absorption by means of Piperazine promoted potassium carbonate to absorb the CO2 from the exhaust stream of the gas turbine. The results demonstrate that the proposed system with 80% carbon capture has negative emissions of -0.31 kg/kWh of CO2-e, when assuming neutral emissions from the BIGCC. For a production of 419 kW of net electricity, the overall energy and exergy efficiencies are 43.8% and 57.2% respectively.



中文翻译:

基于生物质的整体气化联合循环与燃烧后碳酸钾回收Co 2:技术经济和环境分析

在这项研究中,使用Aspen Plus在热力学平衡条件下为发电段开发了一个热力学模型,该模型描述了具有碳捕获和存储的集成生物能源(BECCS)系统,并建立了一个基于速​​率的碳捕获段模型,该模型代表了从碳捕集中的CO 2回收。基于生物质的整体气化联合循环(BIGCC)的废气。对集成系统进行了全面的技术经济分析,以评估系统范围内的环境影响和经济成本。使用后燃烧技术对碳的捕集进行建模,并利用哌嗪促进的碳酸钾吸收CO 2进行化学吸收来自燃气轮机的排气流。结果表明,当假设BIGCC产生中性排放时,拟议的具有80%碳捕获量的系统的负排放为-0.31 kg / kWh CO 2 -e。对于419千瓦的净电力生产,总能源效率和火用效率分别为43.8%和57.2%。

更新日期:2020-01-24
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