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Idiomas disponibles
Idiomas disponibles
OPERATION CURVE
mbar
10
5
0
-0,3
* Operation range obtained with a single nozzle of 1st flame according to norm EN 267.
The operation range is drawn in respect to test conditions and is to be used as guideline for the combined use with boilers.
INSTALLATION
Burners model PNZ can be installed on any high-pressure hearth, although it can also be suitable for depressure hearths
(according to the operation range). PNZ burners run on de-sulphured naphtha types whose viscosity does not exceed
12-15° E at 50° C. Naphtha must be suitably preheated so it can be pulverised and therefore burn well; the pre-heating
tank of the burner (fig. 2) is in charge of this. If the pumpability limit is expected to be reached, and, in particular, in case
of heavy naphtha, it is necessary to provide a circuit for forced supply and, eventually, for added pre-heating (for naphtha
pumpability limits and atomisation viscosity fig. 4).
DIAGRAMS CONTAINING NAPHTHA INFORMATION
12
8
3
VISCOSITY °E
ATOMISATION VISCOSITY
10
0
N.B. Temperature values corresponding to atomisation viscosity are also the calibration values of the maximum thermostat
on the pre-heater tank.
PNZ 30
PNZ 50
10
20
30
40
50
100
200
300
400
500
600
16
NAPHTHA PUMPABILITY LIMIT
50
100
PNZ 75 PNZ 100
60
70
80
90
100
700
800
900 1000 1100 1200 1300 1400 1500 1600
Thermal power
°C
- 26
-
PNZ 130
110
120
130
140 kg/h
kW
FIG. 4
FIG. 3
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