Online Monitoring of Aluminium Primary Production Gas Composition by Use of Fourier-Transform Infrared Spectrometry

Aarhaug, Thor Anders; Ferber, Alain; Kjos, Ole Sigmund; Gaertner, Heiko

doi:10.1007/978-3-319-48144-9_109

Cited by 4 publications

(7 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…FTIR is a very versatile technique that covers many relevant analytes. 45 Using multivariate regression, such as partial least squares (PLS), robust calibration models can be established.…”

Section: Fourier-transform Infrared Spectroscopy (Ftir)mentioning

confidence: 99%

“…Kimmerle 48 reported numbers for CO 2 and CO to be 14,500 and 1340 ppm, respectively. Aarhaug 45 reported values of 7700 and 754 ppm for CO 2 and CO, respectively. Fleer 8 reported CO levels in the range of 500 ppm.…”

Section: Carbon Oxidesmentioning

confidence: 99%

“…Assessment of the acid dew point is often done by open path spectroscopy. Aarhaug 45 applied FTIR spectroscopy across an industrial-scale reduction cell to detect SO 3 and H 2 SO 4 . An acid dew point value in the range 40-80°C has often been assumed for aluminium production.…”

Section: Sulfurous Gas Speciesmentioning

confidence: 99%

“…In a beam-through cell experiment with open-path spectroscopy, only traces of COF 2 have been identified. 45 Historically, high PFC emissions were experienced during the start-up of electrolysis cells. Today, start-up protocols are aiming at minimizing the PFC emissions by means of proper pre-heating of the cells.…”

Section: Fluoridesmentioning

confidence: 99%

See 3 more Smart Citations

Aluminium Primary Production Off-Gas Composition and Emissions: An Overview

Aarhaug

Ratvik

2019

JOM

View full text Add to dashboard Cite

“…FTIR is a very versatile technique that covers many relevant analytes. 45 Using multivariate regression, such as partial least squares (PLS), robust calibration models can be established.…”

Section: Fourier-transform Infrared Spectroscopy (Ftir)mentioning

confidence: 99%

Section: Carbon Oxidesmentioning

confidence: 99%

Section: Sulfurous Gas Speciesmentioning

confidence: 99%

Section: Fluoridesmentioning

confidence: 99%

See 2 more Smart Citations

Aluminium Primary Production Off-Gas Composition and Emissions: An Overview

Aarhaug

Ratvik

2019

JOM

View full text Add to dashboard Cite

“…Methods for analyzing exhaust gas from an anode baking furnace both before and after dry scrubbing has proved to be feasible [7]. In addition, there has been experiments measuring the off-gas from the electrolysis cell, both with respect to formation mechanisms for certain gas components, but also as an emission control step before release to the surroundings [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

A Study of Anode Baking Gas Composition

Aarhaug

Brandvik

Kjos

et al. 2018

The Minerals, Metals &Amp; Materials Series

Self Cite

View full text Add to dashboard Cite

A method has been developed to measure gas composition inside the pit in open anode baking furnaces. The gas composition can be used to understand attack on and degradation of the refractory lining, baking behavior and combustion energy contribution through the baking cycle. A probe was installed in the packing coke near the bottom of the pit while extracting gas over several days with continuous analysis with an FTIR spectrometer. The results show a clear temperature dependence of CO and CO2 composition. Methane was found to be the dominating gas species at the beginning of the measuring cycle. Fluoride gases was also present, indicated by reactions with the glass wool filter to yield SiF4 that was detected in small amounts. PAH condensates were observed but not systematically determined in the present campaign. Earlier results from PAH measurements before the scrubbing, showing large fluctuations, will be discussed in relation to present findings.

show abstract

Systemic Approaches for Emission Reduction in Industrial Plants Based on Physical Accounting: Example for an Aluminum Smelter

Billy

Monnier

Nybakke

et al. 2022

Environ. Sci. Technol.

View full text Add to dashboard Cite

Greenhouse gas (GHG) accounting in industrial plants usually has multiple purposes, including mandatory reporting, shareholder and stakeholder communication, developing key performance indicators (KPIs), or informing cost-effective mitigation options. Current carbon accounting systems, such as the one required by the European Union Emission Trading Scheme (EU ETS), ignore the system context in which emissions occur. This hampers the identification and evaluation of comprehensive mitigation strategies considering linkages between materials, energy, and emissions. Here, we propose a carbon accounting method based on multilevel material flow analysis (MFA), which aims at addressing this gap. Using a Norwegian primary aluminum production plant as an example, we analyzed the material stocks and flows within this plant for total mass flows of goods as well as substances such as aluminum and carbon. The results show that the MFA-based accounting (i) is more robust than conventional tools due to mass balance consistency and higher granularity, (ii) allows monitoring the performance of the company and defines meaningful KPIs, (iii) can be used as a basis for the EU ETS reporting and linked to internal reporting, (iv) enables the identification and evaluation of systemic solutions and resource efficiency strategies for reducing emissions, and (v) has the potential to save costs.

show abstract

Online Monitoring of Aluminium Primary Production Gas Composition by Use of Fourier-Transform Infrared Spectrometry

Cited by 4 publications

References 0 publications

Aluminium Primary Production Off-Gas Composition and Emissions: An Overview

Aluminium Primary Production Off-Gas Composition and Emissions: An Overview

A Study of Anode Baking Gas Composition

Systemic Approaches for Emission Reduction in Industrial Plants Based on Physical Accounting: Example for an Aluminum Smelter

Contact Info

Product

Resources

About