CEN/TS 15439:2006

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Principle of the measurement method
   5.1 Introduction
   5.2 Sampling
   5.3 Analysis
6 Reagents
   6.1 Solvent for tar collection and Soxhlet extraction
   6.2 Carrier gas in gas chromatography
   6.3 Calibration standards
7 Equipment
   7.1 Equipment for sampling
   7.2 Equipment for sample pretreatment and analysis
8 Preparation of sampling equipment
   8.1 Preconditioning of filter thimbles
   8.2 Cleaning of equipment
   8.3 Preparation of impinger bottles or Petersen column
   8.4 Sampling train leak test
9 Procedure for sampling
   9.1 Introduction
   9.2 Duration of sampling
   9.3 Sampling procedure
10 Storage of samples
11 Preparation for analysis
   11.1 Introduction
   11.2 Requirements for GC calibration standards and internal
        standards (ISTD)
12 Analysis procedures
   12.1 Soxhlet extraction procedure
   12.2 Combination of solvents
   12.3 Determination of particle mass
   12.4 Determination of gravimetric tar mass
   12.5 Determination of individual tar compounds by
        GC-MS or GC-FID
13 Calculation of GC results
14 Performance characteristics
   14.1 Introduction
   14.2 Performance of the analysis methods (Round Robin tests)
   14.3 Performance of the whole Technical Specification
        (parallel tests)
15 Test report
Annex A (informative) List of most abundant individual organic
                      compounds in biomass gasification product
                      gases
Annex B (normative) List of organic compounds for which
                      precision data have been collected
Annex C (normative) Dimensions of the Petersen column
Annex D (informative) Additional information on Round Robin
                      analysis
Annex E (informative) Additional information on parallel tests
Bibliography

This European Technical Specification gives methods for sampling and analysis of tars and particles in order to determine the load of these contaminants in flowing biomass gasification product gases. The Technical Specification is applicable to sampling and analysis of tars and particles in the concentration range typically from 1 mg/mn3 to 300 g/mn3 (tars) and from 20 mg/mn3 to 30 g/mn3 (particles) at all relevant sampling point conditions (0 °C to 900°C and 60 kPa to 6000 kPa (0,6 bar to 60 bar) ) ), ). Particle concentrations lower than 20 mg/mn3 are outside the scope of this Technical Specification and can be measured according to EN 13284-1.Application of this Technical Specification allows determination of five different parameters:A.The concentration of gravimetric tar in mg/mn3;B.The concentration of individual organic compounds in mg/mn3. This Technical Specification gives data on repeatability and reproducibility for the compounds listed in Annex B. The Technical Specification is also applicable for other organic compounds (e.g. those mentioned in Annex A), but repeatability and reproducibility have not been assessed for compounds other than those in Annex B;C.The sum of concentrations of identified GC-detectable compounds listed in Annex B;D.The sum of concentrations of all GC-detectable compounds with retention times in the range of benzene to coronene calculated as naphthalene (benzene excluded), given that this sum of concentrations can be determined.E.The concentration of particles in mg/mn3.