Steam separators : (New) (Boiler Appurtenances and Accesories)
The function of the boiler is to create the necessary amount of steam required for the load, whether it is for process, heating, or hot water. The steam produced must also be of a certain quality and purity. Steam quality refers to the moisture content of steam; for example, steam with 98% quality would have 2% moisture. Steam purity refers to the amount of contamination in the steam and is often a result of impurities entrained in boiler water that is carried over with the steam. The contamination in steam is often given as the amount of solids in parts per million or parts per billion. Water and impurities carried over with the steam is aptly known as carryover. Steam for heating and hot water service normally docs not have to meet very stringent purity requirements, and the small amounts of impurities carried over with the boiler water do not pose a problem. More sensitive to carryover and impurities are certain manufacturing processes that can be contaminated by impurities in steam and facilities that utilize superheat and certain steam turbines that require very clean dry steam. The contaminants carried over may form deposits on superheater tube surfaces that act as insulation, impeding heat transfer and resulting in superheater tube overheating and tube failure. Additionally, the contaminants carried over deposit inside steam piping and valves as well as on the mechanisms and turbine blades in steam turbines, causing premature shutdown for service and overhaul and, in extreme cases, failure of the turbine or turbine parts. Steam separators are devices installed in the boiler steam space designed to separate out moisture and impurities from the steam as it exits the boiler.
(Steam and Hot Water Primer, Chris Langley, Andrew Sacks, p.79)
THERE IS NO OLDER DEFİNATİON !!!
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