Comparison of PFC emission coefficients for operating and startup pots at a side work prebake smelter

被引：0

作者：

Xu, Weizong ^{[1
]}

Dando, Neal R. ^{[1
]}

Sedlacek, David ^{[1
]}

机构：

[1] Alcoa Technol, Alcoa Ctr, PA 15069 USA

来源：

LIGHT METALS 2008 | 2008年

关键词：

perfluorocarbons; PFC; FTIR; tetrafluoromethane; hexafluoroethane; greenhouse gases; climate change; anode effect;

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Tier 3b perfluorocarbon (PFC) emission coefficients are determined by performing ventilation duct PFC measurements during normal potline operation and are used to estimate plant-specific PFC emissions based upon integrated anode effect duration. To-date, little information exists regarding the PFC emission of newly started pots relative to those under normal operation. In addition, the practice of including or excluding anode effect data from newly started pots is not uniform between aluminum smelters. Two separate PFC monitoring campaigns were performed during a side work prebake (SWPB) potline restart at an Alcoa smelter in 2007. The measured PFC slope terms agreed from these two tests, and were also consistent with 2006 data (<15% deviation), suggesting that no significant difference exists between new and "old" pot PFC emission coefficients. This data also suggests that anode effect data from newly started side work prebake pots could be included in the plant's PFC reporting inventory using the same emission coefficients (Tier 2 or plant-specific) determined during normal pot operation, assuming that "soft" (well pre-heated cathode) pot starts are performed.

引用

页码：245 / 248

页数：4