2.B.6 - Titanium Dioxide Production

In NFR 2.B.6, SO₂,CO,NOx and TSP emissions from the production of titanium dioxide are reported.

There are two kinds of processes called chloride process and sulfate process for the production of titanium dioxide. The total production amount is attained from the German Federal Statistical Office¹⁾.For the calculation of individual production of each process, the fraction of chloride process is determined based on the estimated total production capacity in Germany (480kt/y) and the production capacity via chloride process (165kt/y) ²⁾³⁾.

Emission factors for Titanium dioxide production are the Tier 2 emission factors from EMEP Guidebook: NOx, CO, and TSP are provided for the chloride process, while only factors for NOx and TSP are available for the sulfate process. The applied Tier 2 emission factors are listed in Table 1 ⁴⁾.

Table 1: Tier 2 emission factors for Titanium dioxide production

The association of the titanium producers reports the sum of SO₂-emissions from both processes directly to the UBA. Since the Submission 2022 the SO₂-emissions are no longer confidential.

Except for SO₂ emission, emissions of the mentioned pollutants are calculated through the multiplication of activity data and corresponding emission factors.

As the emission factors are constant over the time the emission trend is influenced only by the development of the production.

For SO₂ emissions from the production of titanium dioxide and sulphuric acid, estimates reported for the second to last year of the time series are routinely actualised by the producers. Furthermore, definite emissions for the last year of the time series are not yet available at the time the inventory is compiled. Here, the reported values represent a prediction and are therefore updated with each new submission as well.

Because of technical problems with the data transfer, there is a small recalculation for titanium dioxide production for 2015 and 2016.

No category-specific improvements are planned.