Description of the plant
A schematic flow diagram for the power plant is shown in Figure 5.1.
The rated power output is 32 kW.
The gasifier is of the down-draught type with five air entrance openings. The throat diameter is approximately 15 cm, and the general dimensioning of the unit is in accordance with the design rules given in Chapter 2.
The throat is made from refractory cement. The inner side of the bunker is air-lined with this material. The hand-operated grate is positioned approximately 20 cm below the smallest cross-sectional area of the throat.
The gasifier is equipped with a double-valve hand operated filling sluice.’
Product gas exchanges heat with incoming air before it is passed on to the gas cleaning section.
Figure 5.1 Flow diagram for producer gas power plant at the Giriulla mill
The gasifier is equipped with an acoustic fuel level indicator which gives an alarm at the time refuelling is required.
Gasifier outlet temperatures as well as the pressure drop over the "throat" of the unit can be measured. Average values obtained with the different types of fuels tested are given in Table 5.1.