Bubble driven flow in narrow channels between the electrodes of an aluminium electrolysis cell
Bubble driven flow in narrow channels between the electrodes of an aluminium electrolysis cell
批准号:
250454-2011
负责人:
Kiss, Laszlo
金额:
$2.19万
依托单位国家:
加拿大
项目类别:
Discovery Grants Program - Individual
财政年份:
2013
资助国家:
加拿大
项目状态:
已结题
起止时间:
2013-01-01 至 2014-12-31
中文摘要
当今的生产技术消耗的电能大约是理论上将氧化铝还原成金属铝所需电能的两倍。在电流通过期间,多余能量的重要部分消散在熔融电解质中。氧化铝电化学还原过程中产生的气泡占据了水平电极间空间的一部分并增加了电阻,从而引发寄生热。 减少过度加热的一种方法是减少电极间空间,即所谓的阳极-阴极距离 (ACD)。然而,阳极下方气泡层的厚度限制了 ACD 的降低,因为气泡会扰乱电解质-金属界面,导致电解池电流效率降低。
英文摘要
Today's production technologies consume about twice of the electrical energy needed theoretically to reduce alumina into metallic aluminum. An important part of the excess energy is dissipated in the molten electrolyte during the passage of the electrical current. The gas bubbles that are generated during the electrochemical reduction of alumina occupy a part of the horizontal interelectrode space and increase the electrical resistance provoking a parasite heat generation. One method of reducing that excess heating is by reducing the interelectrode space, the so-called anode-cathode distance, ACD. However, the thickness of the bubble layer under the anode sets a limit to the reduction of the ACD as the bubbles can perturb the electrolyte-metal interface, causing a reduction in the current efficiency of the electrolysis cell.
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Bubble driven flow in narrow channels between the electrodes of an aluminium electrolysis cell
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项目类别:Discovery Grants Program - Individual
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依托单位:
Bubble driven flow in narrow channels between the electrodes of an aluminium electrolysis cell
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批准号:250454-2011
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项目类别:Discovery Grants Program - Individual
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资助金额:$2.19万
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负责人:Kiss, Laszlo
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Study of alumina dissolution and side-ledge behaviour in aluminium electrolysis cells
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Bubble driven flow in narrow channels between the electrodes of an aluminium electrolysis cell
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批准号:250454-2011
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项目类别:Discovery Grants Program - Individual
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Study of alumina dissolution and side-ledge behaviour in aluminium electrolysis cells
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依托单位:
Bubble driven flow in narrow channels between the electrodes of an aluminium electrolysis cell
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批准号:250454-2011
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项目类别:Discovery Grants Program - Individual
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资助金额:$2.19万
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负责人:Kiss, Laszlo
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依托单位:
Bubble movement under a solid surface
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依托单位:
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依托单位:
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依托单位:
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资助金额:$1.24万
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