de - Beste verfügbare Techniken (BVT) - Umweltbundesamt

3 CURRENT EMISSION AND CONSUMPTION LEVELS
Chapter 3
The given data are based on the information provided and are derived from many different
origins. A grouping according to the production spectrum was avoided by intention to prevent
any assumptions in this stage.
Due to widely spread confidentiality concerns, all reference plants are named with an alias
(example: *199D,O,X*) where the number can be used to identify the reference plant
throughout this document and the letters indicate the production spectrum. A list of all reference
plants is given in Table 9.1.
3.1 Emissions to air
Concentration values and mass flows given in this section are derived from reference plants or
other references where the individual plant was not named. The key to the comparison of
concentrations and mass flows from one source is the number of the reference plant (or, in some
cases, the reference to literature).
Where reference plants are named as the source, the data are usually derived from monitoring
reports including background information on sampling/averaging times and also information if
the sampling is representative (production situation). For interpretation of the given values,
please note:
• average times vary usually from 30 to 180 minutes, in some cases the sampling time is not
available
• where peaks or big variations occur within the average time, or within different samples,
ranges are given in the tables.
3.1.1 VOC emissions: overview
Figure 3.1 indicates the main VOC compound families and their relative share in atmospheric
emissions from the Organic Fine Chemicals sector in Spain [46, Ministerio de Medio Ambiente,
2003].
Others
Esters
Halogenated solvent
Olefinic hydrocarbons C1 - C14
Aldehydes/ketones
Alcohols
Aromatic hydrocarbons
Aliphatic hydrocarbons C1 - C14
1.9
BS/EIPPCB/OFC_BREF_FINAL December 2005 75
5.7
7.8
6.7
13.1
11.1
21.2
32.5
0 5 10 15 20 25 30 35
Share in %
Figure 3.1: Composition of VOC emissions from the OFC sector in Spain