2 D 3 g Chemical Products

Last updated on 15 Feb 2017 12:05 (cf. Authors)

Short Description

This source category comprises NMVOC emissions from the use of solvents in the following manufacture processes:

  • Polyester processing
  • Polyvinychloride processing
  • Polyurethane processing
  • Polystyrene foam processing
  • Rubber processing
  • Pharmaceutical products manufacturing
  • Manufacture of paints and lacquers
  • Manufacture of inks
  • Glues manufacturing
  • Asphalt blowing
  • Adhesive manufacturing, magnetic tapes manufacturing, photographs manufacturing
  • Solvents manufacturing:
    • Manufacture of wood preservatives
    • Manufacture of building material additives
    • Manufacture of solvent-based consumer goods
    • Manufacture of surface cleaning agents
    • Manufacture of antifreeze agents and de-icers
    • Manufacture of waxing and dewaxing agents
    • Manufacture of paint strippers

‘NMVOC’ is defined in keeping with the VOC definition found in the EC solvents directive. For purposes of the definition of solvents, the term ‘solvent use’ is also defined in keeping with the EC solvents directive.

Method

General procedure

NMVOC emissions are calculated in keeping with a product-consumption-oriented approach.
In this approach, solvent-based products or solvents are allocated to the source category, and then the relevant NMVOC emissions are calculated from those solvent quantities via specific emission factors. Thus, the use of this method is possible with the following valid input figures for each product group:

  • Quantities of VOC-containing (pre-) products and agents used in the report year,
  • The VOC concentrations in these products (substances and preparations),
  • The relevant application and emission conditions (or the resulting specific emission factor).

The quantity of the solvent-based (pre-)product corresponds to the domestic consumption which is the sum of domestic production plus import minus export.

NMVOC Emission = domestic consumption of a certain product * solvent content * specific emission factor

The calculated NMVOC emissions of different product groups for a source category are then aggregated.
The product / substance quantities used are determined at the product-group level with the help of production and foreign-trade statistics. Where possible, the so-determined domestic-consumption quantities are then further verified via cross-checking with industry statistics.

Discussion of emission trends

General information

Since 1990, so the data, NMVOC emissions from use of solvents and solvent-containing products in general have decreased by nearly 38%. The main emissions reductions have been achieved in the years since 1999. This successful reduction has occurred especially as a result of regulatory provisions such as the 31st Ordinance on the execution of the Federal Immissions Control Act (Ordinance on the limitation of emissions of volatile organic compounds due to the use of organic solvents in certain facilities – 31. BImSchV), the 2nd such ordinance (Ordinance on the limitation of emissions of highly volatile halogenated organic compounds – 2. BImSchV) and the TA Luft.

Specific information

Since 1990, data of source category 2.D.3.g are recorded. Since 2000, a more detailed data collection procedure enables to follow the development of different applications, which altogether accounts for about 7 - 8% of total NMVOC emissions from solvent-based products (Figures 1-3).


Figure 1: Development of NMVOC emissions of category 2.D.3.g since 2005.


Figure 2: Development of NMVOC emissions from source group 2.D.3.g in comparison to total NMVOC emissions from solvent-based products and applications since 1990.


Figure 3: Share of NMVOC emissions from source group 2.D.3.g on total NMVOC emissions from solvent-based products and applications since 1990.

Total emissions of NMVOC emissions of 2.D.3g remain relatively stable. In some major activities amounts of NMVOC emissions raised, such as from solvents used in polystyrene foam processing and the manufacture of solvent-based consumer products (Table 1).

Major emissions from … 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015
Polystyrene foam processing 100% 111% 98% 233% 101% 129% 132% 140% 134% 78% 64%
Rubber processing 100% 86% 80% 79% 98% 113% 113% 107% 114% 115% 112%
Manufacture of paints and lacquers 100% 124% 119% 117% 99% 100% 100% 97% 92% 97% 94%
Pharmaceutical products manufacturing 100% 10% 4% 6% 8% 8% 8% 9% 9% 10% 10%
Solvent-based consumer goods 100% 110% 124% 138% 219% 222% 228% 230% 245% 250% 245%
Manufacture of antifreeze agents and de-icers 100% 195% 209% 160% 210% 390% 211% 176% 247% 206% 209%

Table 1: List of product groups and applications that primarily contributed to emissions of category 2.D.3g in 2005 and ist relative development compared to 2005.

Uncertainty

Emission factors: Relative error rates at ±15% and ±25% (for Asphalt blowing; Adhesive manufacturing, magnetic tapes manufacturing, photographs manufacturing) were applied, but not exceeding 100% or falling below 0%. Uncertainties refer to a 95% confidence interval.

Recalculations

Data for 2010 until 2014 were recalculated based on the final foreign trade statistics. Furthermore, a consistency check of the category 2.D.3g showed a need for slight corrections and improvements in selected calculations for the years 2005 until 2014, which led to the following changes:

Before Recalculation After Recalculation
2005 46,98 49,37 kt
2006 45,20 kt 45,07 kt
2007 43,34 kt 43,15 kt
2008 53,87 kt 53,66 kt
2009 48,40 kt 44,08 kt
2010 55,25 kt 51,69 kt
2011 53,09 kt 49,24 kt
2012 48,62 kt 48,34 kt
2013 49,24 kt 49,91 kt
2014 43,93 kt 44,38 kt

Table 2: Recalculations for 2.D.3.g for the period 2005 – 2014.

Unless otherwise stated, the content of this page is licensed under Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License