2. Fuels used and methodology
2.1. Sample characterization
The tested material was composed of recovered solid waste in
the form of pellets with a diameter of 8 mm. Typical straw pellets
also were chosen in this study as a reference for comparison with
RDF. The proximate and ultimate analysis of the tested materials is
presented in Table 1.
2.2. Testing methodology
The experiments were carried out in a lab-scale facility in Kungliga
Tekniska Högskolan (KTH) in Sweden. A schematic of this facility
is shown in Fig. 1. One ceramic honeycomb heat exchanger (3)
installed in the chamber was used to accumulate heat from a
methane combustion process and to provide energy to the pyrolysis
reaction through convection and radiation, and a thermocouple
(11) was used to record the furnace temperature. When the temperature
reached the desired level, the gas burner (12) was
switched off, and N2 gas controlled by a mass flow meter was fed
into the chamber. After passing though the honeycomb, the N2
can be preheated to high temperatures. The pellet sample (10)
was inserted into the furnace and connected to a digital balance