Tar measurement by the Solid Phase Adsorption (SPA ... - EVUR

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8 29-6-2011 GC analysis • ECN tar clasification system Class 1 Class 2 Class 3 Class 4 Class 5 GC undetectable tars. This class includes the heaviest tars that condense at high temperature even at very low concentrations. Heterocyclic components (like phenol, pyridine, cresol). These are components that generally exhibit high water solubility, due to their polarity. Aromatic components. Light hydrocarbons that are not important in condensation and water solubility issues. Light polyaromatic hydrocarbons (2-3 rings PAH’s). These components condense at relatively high concentrations and intermediate temperatures. Heavy polyaromatic hydrocarbons (4-5 rings PAH’s). These components condense at relatively high temperature at low concentrations.
9 29-6-2011 Evaluation of tar results • Concentration of tar in a gas is a thermodynamic equilibrium. • For most of the 33 SPA tar components this vapour pressure data is known. • The Antoine equation is used to determine for a mixture what the temperature is to keep all tar molecules in the gas phase.
Page 1 and 2: Tar measurement by the Solid Phase
Page 3 and 4: 3 29-6-2011 Sampling • 100 ml gas
Page 5 and 6: 5 29-6-2011 GC analysis • Hot spl
Page 7: 7 29-6-2011 GC analysis • Identif
Page 11 and 12: 11 29-6-2011 Considerations • SPA

Tar measurement by the Solid Phase Adsorption (SPA ... - EVUR

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