2 D 3 D Coating Application

Last updated on 30 Aug 2017 16:54 (cf. Authors)

Short Description

This source category comprises NMVOC emissions from the use of solvent-based products of three major sub-categories: Decorative coating applications, industrial coating applications and other non-industrial paint application
The following product groups are taken into consideration:
i) Decorative coating applications:

  • Application of paints and lacquers in Car repairing
  • Professional application of paints and lacquers for Construction and Building (emulsion paints for indoor application; silicate exterior paints; synthetic resin plasters / silicate; varnishes; primers and protection coatings; other coatings)
  • Do-it-yourself application of paints and lacquers for Building (emulsion paints for indoor application; silicate exterior paints; synthetic resin plasters / silicate; varnishes; primers and protection coatings; other coatings)
  • Application of paints and lacquers for Wood surfaces (wooden interiors, carpentry)

ii) Industrial coating applications

  • Application of paints and lacquers for Manufacture of cars (primers, fillers, top coat / clear lacquers)
  • Application of paints and lacquers for Car Repairing of commercial vehicles
  • Application of paints and lacquers for Coil Coating
  • Application of paints and lacquers for Boat Building
  • Application of paints and lacquers for Wood surfaces (furniture)
  • Other industrial paint application (such as paint spray, electrical appliances, mechanical engineering, automotive accessories, metal goods, wire enamel, synthetic materials, paper/foil)

iii) Other non-industrial paint application (marking paints, corrosion protection, other)

‘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.

Specific information

An emission factor of 95% was allocated to all open applications (e. g. all decorative coating applications). For installation-related industrial applications specific emission factors were assessed and applied.

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.d are recorded. Since 2000, a more detailed data collection procedure enables to follow the development of different applications, which altogether account for a bit more than 1/3 of total NMVOC emissions from solvent-based products (Figures 1-3).


Figure 1: Development of NMVOC emissions of category 2.D.3.d since 1990. A more comprehensive data analysis since 2000 enables an application-specific evaluation.

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

A clear decrease in the NMVOC emissions in 2.D.3d can be observed for recent years. Table 1 lists seven applications that caused major emissions in category 2.D.3d and their developments:
Major emissions from … 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015
Wooden furniture 100% 165% 152% 144% 115% 135% 129% 127% 123% 114% 117%
Mechanical engineering 100% 104% 92% 84% 67% 78% 74% 77% 70% 56% 62%
Varnishes DIY 100% 77% 68% 62% 39% 38% 39% 38% 38% 40% 40%
Varnishes professional 100% 66% 57% 51% 31% 29% 30% 30% 30% 31% 31%
Wooden interiors 100% 22% 20% 19% 15% 16% 16% 13% 15% 16% 16%
Manufacture of cars 100% 60% 55% 50% 44% 53% 52% 51% 52% 46% 46%
Corrosion protection 100% 142% 130% 119% 91% 103% 104% 100% 101% 87% 94%

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

After the reunification of East and West Germany, the paints and coating application industries had economically good years. The emissions from 1990 to 1993 stayed on a high level. After 1993, this economic hype ended. In consequence, also the emissions declined.
A major reason for the decrease of overall emissions in this source category is the fulfillment of the Decopaint-Directive according to maximum solvent contents. The German "Blauer Engel" ("Blue Angel") environmental quality seal supported this development by certifying a range of products, including low-solvent paints and lacquers.

Uncertainty

Relative Uncertainties for emissions for each product were obtained by error propagation and refer to the 95% confidence interval.

Domestic Consumption: For all values based on the official statistics, a relative uncertainty of ±10% for lacquers and of ±15% for thinners was applied.
Solvent content: For each product, a relative error at ±15% for lacquers was applied, but not exceeding 100% or falling below 0%.
Emission factors: For each product, a relative error at ±15% was applied, but not exceeding 100% or falling below 0%.
Hence the overall uncertainty of emissions caused by application of products of this source group is at least 40%.

Recalculations

Data for 2005, 2010 until 2014 were re-calculated based on the final foreign trade statistics. It was realized that some calculations in previous years did not consider finalized statistical values as inputs. Furthermore, a consistency check of the category 2.D.3.d 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 345,87 kt 301,51 kt
2006 317,60 kt 318,62 kt
2007 287,08 kt 286,24 kt
2008 267,89 kt 266,96 kt
2009 216,28 kt 223,98 kt
2010 246,02 kt 245,64 kt
2011 236,86 kt 235,77 kt
2012 249,86 kt 244,99 kt
2013 222,28 kt 223,19 kt
2014 190,01 kt 185,96 kt

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

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