铝电解工业中全氟碳化物排放

近年来,铝电解技术与设备取得很大进步,目前环保节能成为铝电解技术发展的主题。铝电解过程中发生阳极效应不但耗费电能,而且排放大量高温室潜势气体CF4、C2F6。面对这一现实,全球各电解铝企业都在不断做出努力,从1990年到2008年每吨铝的PFCs排放物减少量超过86%。本文主要概述了铝电解过程中PFCs的排放现状以及估算方法,并综述了近年来世界上关于CF4和C2F6产生机理的研究。

Perfluorocarbon Emission in the Primary Aluminum Production Process

Recently, technologies and equipments for primary aluminum production has made great progress, which makes environmental protection and energy saving become the theme of electrolytic aluminum technology. Anode effect occurring in the primary aluminum production process consumes not only electric energy but also releases High Global Warming Potentials Gases CF4, C2F6. Facing this reality, all the global primary aluminium smelters make efforts constantly to reduce the amount of perfluorocarbon emission. From 1990 to 2008, PFCs reduction of per ton aluminum was more than 86%. The paper summarized the PFCs emissions at aluminum electrolysis process and estimation methods, as well the research of generation mechanism about CF4 and C2F6 over several years in the word.