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首页> 外文期刊>Energy efficiency >Effects on primary energy use, greenhouse gas emissions and related costs from improving energy end-use efficiency in the electrolysis in primary aluminium production
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Effects on primary energy use, greenhouse gas emissions and related costs from improving energy end-use efficiency in the electrolysis in primary aluminium production

机译：对初级铝生产电解能源最终利用效率，温室气体排放和相关成本的影响

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Primary aluminium production is energy- and GHG-intensive in which electrolysis is by far the most energy- and GHG-intensive process. This paper's aim is to study the effects on (1) primary energy use, (2) GHG emissions and (3) energy and CO_2 costs when energy end-use efficiency measures are implemented in the electrolysis. Significant savings in final and primary energy use, GHG emissions and energy and CO_2 costs can be achieved by implementing the studied measures. Vertical electrode cells and the combination of inert anodes and wettable cathodes are among the measures with the highest savings in all three areas (primary energy use, GHG emissions and energy and CO_2 costs). Direct carbothermic reduction is one of the measures with the highest savings in primary energy use and energy and CO_2 costs. For GHG emissions, direct carbothermic reduction is the more beneficial choice in regions with a high proportion of coal power, while inert anodes are the more beneficial choice in regions with a high proportion of low-carbon electricity. Although a company potentially can save more money by implementing the direct carbothermic reduction, the company should consider implementing the vertical electrode cells together with other energy-saving technologies since this would yield the largest GHG emission savings while providing similar cost savings as the direct carbothermic reduction. It may be necessary to impose a price on GHG emissions in order to make inert anodes cost-effective on their own, although further evaluations are needed in this regard. There is a potential to achieve carbon-neutrality in the reduction of aluminium oxide to pure aluminium.
机译：主要铝制生产是能源和温室气体，其中电解是迄今为止最能量和温室气体增长率和温室气体增长的过程。本文的目的是研究（1）初级能源使用，（2）温室气体排放量和（3）能源和CO_2成本，当能源最终用途效率措施在电解中实施时。通过实施研究措施，可以实现最终能源使用，GHG排放和能源和CO_2成本的大大节省。垂直电极电池和惰性阳极和可湿性阴极的组合是所有三个区域节省最高的措施（一次能源使用，温室气体排放和能量和CO_2成本）。直接Carbothothothotmic Repse是主要能源使用和能源和CO_2成本节省最高的措施之一。对于温室气体排放，直接的碳水化量减少是煤炭力量比例高的地区更有益的选择，而惰性阳极是具有高比例低碳电站的地区更有益的选择。虽然公司可能通过实施直接碳水化的减少来节省更多的资金，但该公司应考虑与其他节能技术一起实施垂直电极电池，因为这将产生最大的温室气体排放量，同时提供与直接携带类似的成本节约。可能有必要对温室气体排放实施价格，以便使惰性阳极自行成本效益，但在这方面需要进一步的评估。有可能在减少氧化铝到纯铝中的碳 - 中立性。

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