在全球能源危机和温室效应加剧的大背景下,低碳化是电力行业的发展目标,而新建碳捕集电厂(carbon capture power plant,CCPP)或对现有火电厂进行碳捕集改造是实现这个目标的有效途径。从CO_2减排量和总成本的角度分析了碳捕集系统(carbo...在全球能源危机和温室效应加剧的大背景下,低碳化是电力行业的发展目标,而新建碳捕集电厂(carbon capture power plant,CCPP)或对现有火电厂进行碳捕集改造是实现这个目标的有效途径。从CO_2减排量和总成本的角度分析了碳捕集系统(carbon capture system,CCS)的减排特性和经济特性,综合考虑了CCS、电源和电网在建设和运行层面的相互关系,建立了计及CCS的动态源网协调规划模型。另外,考虑未来政策变化和负荷变动对CCS运行的影响,设置了CCS运行状态变量,以反映CCS运行的灵活性。该数学模型是一个混合整数线性规划问题,并在通用代数建模软件GAMS中实现建模,最后调用CPLEX求解器对模型进行求解,IEEE30节点系统的算例分析验证了本文所提出方法的有效性。展开更多
碳捕集系统灵活运行对火电机组的运行带来了影响,在其灵活运行模式的基础上,提出了灵活度的概念。给出了碳捕集(Carbon Capture and Storage,CCS)系统灵活运行时的运行成本以及减排效率的公式。在此基础上建立了考虑CCS系统灵活运行的...碳捕集系统灵活运行对火电机组的运行带来了影响,在其灵活运行模式的基础上,提出了灵活度的概念。给出了碳捕集(Carbon Capture and Storage,CCS)系统灵活运行时的运行成本以及减排效率的公式。在此基础上建立了考虑CCS系统灵活运行的多目标调度模型,采用多目标细菌群体趋药性(Multi-Objective Bacterial Colony Chemotaxis,MOBCC)算法对所建模型进行优化求解,对火电机组的出力进行优化。算例分析中将所建的调度模型与传统调度模型进行对比分析,仿真结果说明了所提模型的有效性。展开更多
The selection of chelators in the pre concentration system Flow Injection Knotted Reactor Flame Atomic Absorption Spectrometry(FI KR FAAS) and their corresponding experimental conditions were studied. Dithione was fou...The selection of chelators in the pre concentration system Flow Injection Knotted Reactor Flame Atomic Absorption Spectrometry(FI KR FAAS) and their corresponding experimental conditions were studied. Dithione was found to have advantages over the other two chelators with a higher concentration efficiency. Interferences from alkali and alkaline earth elements were overcome; mutual interferences between heavy metals were avoided. Concentration factors of 23 4-69 3 were obtained, with the detection limits of 1 61-2 56 μg/L. The method developed was used to determine certified biological reference materials of human hair, pig liver and sea prawn, and the results agreed well with the certified values, relative standard deviations of the determinations were in the range of 2 10%-3 02%.展开更多
文摘The selection of chelators in the pre concentration system Flow Injection Knotted Reactor Flame Atomic Absorption Spectrometry(FI KR FAAS) and their corresponding experimental conditions were studied. Dithione was found to have advantages over the other two chelators with a higher concentration efficiency. Interferences from alkali and alkaline earth elements were overcome; mutual interferences between heavy metals were avoided. Concentration factors of 23 4-69 3 were obtained, with the detection limits of 1 61-2 56 μg/L. The method developed was used to determine certified biological reference materials of human hair, pig liver and sea prawn, and the results agreed well with the certified values, relative standard deviations of the determinations were in the range of 2 10%-3 02%.
