摘要
为了合理评价氨水脱碳工艺与燃煤电厂集成后的运行性能,基于脱碳系统仿真模型和燃煤电厂变工况模型,利用技术经济学方法建立了脱碳机组评价体系.考察了CO_2捕集系统主要参数(氨水质量分数、贫液CO_2负荷、吸收塔入口温度、再生塔压力、氨气逃逸率和CO_2捕集率)对机组运行性能的影响,选取了氨水脱碳系统可行运行参数.结果表明:氨水质量分数为11%、贫液负荷为0.36以及吸收塔入口温度为15℃为该系统可行运行参数,此时脱碳机组相对于优化前发电效率提升了0.712 7%,发电煤耗降低了6.959 4g/(kW·h),发电成本降低了0.011元/(kW·h),脱碳成本降低了16.756 3元/t.
To reasonably evaluate the operation performance of a coal-fired power plant adopting the ammonia-based carbon capture process, a technical economic model was set up based on the simulation model of carbon capture system and the variable condition model of power plant, so as to analyze the effects of fol- lowing parameters on operation performance of the unit, such as the ammonia concentration, lean solvent loading, chilled temperature, desorber pressure, ammonia slip rate and carbon capture rate, etc. , and subsequently to determine the optimal variables of the carbon capture system. Results show that the optimal values of ammonia concentration, lean solvent loading and chilled temperature are respectively 11% , 0.36 and 15℃, when the power generation efficiency would be increased by 0. 712 7% , and the coal consumption rate, power generation cost and carbon capture cost would be reduced by 6. 959 4 g/（kW · h）, 0. 011 CNY/（kW · h） and 16 756 3 CNY/t accordingly, compared to the original power unit.
出处
《动力工程学报》
CAS
CSCD
北大核心
2016年第7期541-550,共10页
Journal of Chinese Society of Power Engineering
基金
国家自然科学基金资助项目(51076044
51306059)
中央高校基本科研业务专项资金资助项目(13XS38)
关键词
冷冻氨法
二氧化碳
发电成本
脱碳成本
chilled ammonia process （CAP）
CO2
power generation cost
carbon capture cost
