FIELD: heating.
SUBSTANCE: system includes one or more sootblowing devices; with that, each of the sootblowing devices has a lance with an elongated hollow tube and at least one nozzle on the far end of the tube. Each of the sootblowing devices is capable of moving the lances to and from the boiler during introduction and removal strokes. In order to measure and control the temperature of the annular wall of the tube during operation of one or several above said sootblowing devices, a temperature measurement system is used. The control system controls a steam flow via the tube and through the nozzle during parts of cleaning and cooling strokes. In the part of cooling strokes there used is lower steam flow level in comparison to the part of cleaning strokes during parts of cooling strokes based on the wall temperature measurement using a system for temperature measurement and elimination of the wall temperature measurement beyond the limits of the specified temperature limit.
EFFECT: minimisation of cleaning liquid flow rate in a sootblowing device.
2 cl, 6 dwg
