Pyrolysis of Black Locust Wood in the Presence of Perlite

The aim of this study is to obtain pyrolysis products (solid, liquid, and gas) from black locust (Robinia pseudoacacia) in the presence of perlite. These include oil, water-soluble products, char, permanent gases, and C1-C4 hydrocarbon gases. The yields of liquid products increase with increasing temperature and perlite. The highest yield of liquid products was 61.9%, which can be obtained from the pyrolysis with 10.0% perlite. The yields of liquid products sharply increase between 3.5 and 6.5min with 2.5% perlite run, whereas 3 and 7min with 10.0% run. Then the yields approach the plateau value after 11 min for all runs. The influence of residence time on the yield of products is small, with a slight decrease in oil yield and increase in char yield. Charcoal yields from 2.5% perlite run were 64.9 and 30.5% for 5 and 20min, respectively.