| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Electrode Technology for Aluminum Production
|
| Presentation Title |
Measurement of SO<Sub>3</Sub> in Flue Gas From Anode Baking Furance |
| Author(s) |
Ole S. Kjos, Thor Aarhaug, Thomas Park Simonsen |
| On-Site Speaker (Planned) |
Ole S. Kjos |
| Abstract Scope |
Anode baking furnaces can have significant emissions of sulphuric gases, SO<sub>3</sub> is of particular concern due to its acidity. It can condense to sulphuric acid and result in sever corrosion, as well as giving the “blue plume” of sulphuric acid mist around the chimneys. In addition SO<sub>3</sub> mist is a significant problem for many CO<sub>2</sub> capture technologies.
The NaCl trap methodology was used for sampling, selectively reacting SO<sub>3</sub> with NaCl at 200 °C to from Na<sub>2</sub>SO<sub>4</sub>. SO<sub>2</sub> and other sulphuric compounds will not react under these conditions.
All samples were collected with two traps in series. It was found that sulphur was only present in the first salt trap, and no break through was observed. Analytical sensitivity for the samples were estimated, and the main factors determining LOD is background sulphur from the salt and analytical accuracy in the ICP-MS methodology. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Environmental Effects, Aluminum, Other |