Biomass ethanol fuel is not only renewable but also environmental-friendly. Guangxi Zhuang Autonomous Region is developing the cassava-based ethanol fuel. Economical performance of the project is the key issue. The tr...Biomass ethanol fuel is not only renewable but also environmental-friendly. Guangxi Zhuang Autonomous Region is developing the cassava-based ethanol fuel. Economical performance of the project is the key issue. The traditional life cycle economical analysis is just a static calculation process. Uncertainty is the character of cassava yield, cost of cassava plant, cassava price, tax rate and gasoline price, and the economical performance of the project is determined by these aspects. This study proposes an economical model of cassava-based ethanol fuel. The method of Monte Carol is used to simulate the economical performance. This method conquers the shortage of the traditional way. The results show that cassava-based ethanol fuel can get survived when the tax is exempted. Finally, the study also evaluates the potential of the economical performance.展开更多
综合能源生产单元(integrated energy production unit,IEPU)通过耦合可再生能源制氢与火电碳捕集技术,制备易于储运的绿色燃料,在协调解决可再生能源消纳、碳利用及氢能储运等问题方面具有良好的应用前景。为定量评价IEPU的技术经济性...综合能源生产单元(integrated energy production unit,IEPU)通过耦合可再生能源制氢与火电碳捕集技术,制备易于储运的绿色燃料,在协调解决可再生能源消纳、碳利用及氢能储运等问题方面具有良好的应用前景。为定量评价IEPU的技术经济性与降碳潜力,该文通过构建IEPU工艺流程的仿真模型,模拟风电制氢、甲醇合成及压缩提纯等关键过程,建立多能流与物料流数据的全生命周期清单,进行碳足迹评价,并指出进一步碳减排的可行路径;通过对能量效率、电流密度等技术参数及风电价格、碳税等经济参数进行灵敏度分析,开展不同技术经济性背景下的经济性评估,探究IEPU的盈利条件。碳足迹评价表明,年产39万t绿色甲醇IEPU的全生命周期净碳减排量达5.88万t。技术经济性评估表明,在良好的技术经济性背景下,当风电售价降低至0.21元/(kW×h),基于IEPU生产的绿色甲醇成本可与传统甲醇生产工艺相当。展开更多
本文叙述了不同国家在不同核电发展条件下的核燃料循环战略初步考虑,并着重叙述了在快堆商业化进程推迟后所发展的混合氧化物(MOX)燃料的设计、制造技术及定量经济分析的基本情况,并建议我国近期应主要采用中间贮存并配以建造后处理中...本文叙述了不同国家在不同核电发展条件下的核燃料循环战略初步考虑,并着重叙述了在快堆商业化进程推迟后所发展的混合氧化物(MOX)燃料的设计、制造技术及定量经济分析的基本情况,并建议我国近期应主要采用中间贮存并配以建造后处理中间试验工厂,为今后的商业后处理厂做好技术准备,同时还要跟踪 MOX 燃料技术。展开更多
文摘Biomass ethanol fuel is not only renewable but also environmental-friendly. Guangxi Zhuang Autonomous Region is developing the cassava-based ethanol fuel. Economical performance of the project is the key issue. The traditional life cycle economical analysis is just a static calculation process. Uncertainty is the character of cassava yield, cost of cassava plant, cassava price, tax rate and gasoline price, and the economical performance of the project is determined by these aspects. This study proposes an economical model of cassava-based ethanol fuel. The method of Monte Carol is used to simulate the economical performance. This method conquers the shortage of the traditional way. The results show that cassava-based ethanol fuel can get survived when the tax is exempted. Finally, the study also evaluates the potential of the economical performance.
文摘综合能源生产单元(integrated energy production unit,IEPU)通过耦合可再生能源制氢与火电碳捕集技术,制备易于储运的绿色燃料,在协调解决可再生能源消纳、碳利用及氢能储运等问题方面具有良好的应用前景。为定量评价IEPU的技术经济性与降碳潜力,该文通过构建IEPU工艺流程的仿真模型,模拟风电制氢、甲醇合成及压缩提纯等关键过程,建立多能流与物料流数据的全生命周期清单,进行碳足迹评价,并指出进一步碳减排的可行路径;通过对能量效率、电流密度等技术参数及风电价格、碳税等经济参数进行灵敏度分析,开展不同技术经济性背景下的经济性评估,探究IEPU的盈利条件。碳足迹评价表明,年产39万t绿色甲醇IEPU的全生命周期净碳减排量达5.88万t。技术经济性评估表明,在良好的技术经济性背景下,当风电售价降低至0.21元/(kW×h),基于IEPU生产的绿色甲醇成本可与传统甲醇生产工艺相当。
文摘本文叙述了不同国家在不同核电发展条件下的核燃料循环战略初步考虑,并着重叙述了在快堆商业化进程推迟后所发展的混合氧化物(MOX)燃料的设计、制造技术及定量经济分析的基本情况,并建议我国近期应主要采用中间贮存并配以建造后处理中间试验工厂,为今后的商业后处理厂做好技术准备,同时还要跟踪 MOX 燃料技术。
