7. Heat recovery systems
Flash steam recovery from blowdown has two advantages. In
addition to the heat recovered the flash steam is condensed
to ‘pure’ water, reducing the amount of make-up water and
chemical treatment required.
For certain conditions it may be more economical to pass the
blowdown directly to a heat exchanger without using a flash
vessel. Spirax Sarco can provide a range of alternative heat
recovery solutions.
8. Bottom blowdown valves
For the precise and regular control of precipitated solids in
steam boilers. A choice of manual key operated or
fully, automated valves are available.
9. Vent heads
The vent head separates condensate from flash steam and
vents it safely without spray. Vent heads are manufactured in
stainless steel for a corrosion resistant long life.
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10. Blowdown vessels
Blowdown vessels are now manufactured to ASME VIII
to allow operation to an ambient temperature of -10°C.
11. Conductivity meters
The temperature compensated conductivity meter is
an essential instrument to have in the boiler house for
checking boiler water and feedwater TDS levels, and
calibrating control instrumentation.
12. Condensate contamination detection systems
Even low levels of contamination can cause foaming,
scaling and corrosion in the boiler.
The contamination detection system monitors the
conductivity of the condensate and will raise an alarm
and divert it to drain if a pre-set limit is passed.
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