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Alstom's environment control systems in aluminium industry

机译:阿尔斯通铝业环境控制系统

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摘要

Alstom's association with the aluminium industry spreads over many businesses and product lines -captive power plants, rectifier substations and air quality control solutions.Production of aluminium involves a two step separation process consisting of (a) refining of alumina-bearing raw materials to high purity alumina or possibly aluminium chloride and (b) conversion of high purity alumina ride or aluminium chloride to molten aluminium by high-temperature molten salt electrolysis. The process generates significant amount of solid wastes (red mud), gaseous emissions (fluoride, sulfur dioxide, carbon monoxide, hydrocarbon,particulates), and liquid effluents. The major environmental problems are associated with the emission of fluorides in both gaseous and particulate forms and sulfur dioxide emission, which impact human life and vegetation in the surrounding areas.
机译:阿尔斯通与铝工业的关系遍布许多业务和产品线,包括自备电厂,整流变电站和空气质量控制解决方案。铝的生产涉及两步分离过程,包括(a)将含氧化铝的原料精炼至高纯度氧化铝或可能的氯化铝,以及(b)通过高温熔融盐电解将高纯度氧化铝或氯化铝转化为熔融铝。该过程产生大量的固体废物(红泥),气体排放物(氟化物,二氧化硫,一氧化碳,碳氢化合物,微粒)和液体流出物。主要的环境问题与气体和颗粒物形式的氟化物的排放以及二氧化硫的排放有关,这会影响周围地区的人类生活和植被。

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