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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.
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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