Basic energetic parameters are structured in the table (p. 8) and on the
drawing (p. 9 ).
4.1. FUEL
Heating boilers of SAS MULTI type are driven by fuel:
In the fuel supply automatic mode:
basic fuel for
boilers SAS MULTI type,
in automatic mode, is
a back coal of pea coal
grade. Its granulation is 5 – 25 mm (energetic pea coal, washed, 31.2 type). The
coal of fine coal grade and coal of thicker than given granulation
*
should not be
applied. This type of fuel may hinder feeder operation.
Basic parameters of the coal for SAS MULTI type boilers are placed:
Granulation
5 - 25 mm
Humidity
to 25 %
Ash content
to 10 %
Ash melting temperature
> 1150°C
Low coal swelling
coal should not tend to stick when
burner
Volatile particles content
30 – 40 %
It is recommended to use coal which is prone to agglomeration (coking), although it is
good caloric properties, higher losses of the coal in ash may occur.
Besides that, some of highly coking coals may cause the tip of screw feeder burn off.
Note: fuel bunker should be supplied with a coal free of water, without
excessive volume of the fine fractions and foreign bodies.
*
In particular, during the loading or fuel refueling, attention should be paid if lumps of coal, pieces of wood,
stones or other unwanted objects are present, as feeder gear may be blocked once affected (it may be blocked
once affected (it may load to cut the motoreducer)
4.
TECHNICAL DATA
