the ECN tar dew point site

Selection of tar compounds

The simplified dew point model will give a better understanding on the magnitude of a tar dew point for tar compounds with 1-5 aromatic rings. The results of the simplified model CANNOT be used for publication.

Selection of tar compounds:
The 6 key tar compounds in the simplified model have been selected based on the tar classification system and molecular size of tar compounds. Toluene and naphthalene are normally present in biomass product gas at high concentration and have a relatively low dew point at high vapour pressure. Pyrene and Benzo(ghi)perylene are present at low concentration but have a relatively high dew point at low vapour pressure. Phenol is an oxygenated tar compound and is therefore different in element composition.