stoomvochtigers

Stoomvochtigers are devices used in steam systems to remove moisture from steam and improve steam quality. They are installed to prevent moisture-related problems such as corrosion, erosion, hammering, and reduced heat transfer, and to protect downstream equipment like turbines, heaters, and heat exchangers.

Operation typically involves separating entrained condensate droplets from the steam flow. This is achieved through inertial or centrifugal separation, coalescing filters, or a combination of baffles and screens that cause droplets to coalesce and drain away. The resulting drier steam continues to the process equipment, while condensate is discharged via a drain or integrated steam trap. Some designs combine a moisture separator with an automatic drain to simplify installation.

Types of stoomvochtigers include mechanical moisture separators (inertial or cyclonic), coalescing moisture separators (filters that promote droplet coalescence), and inline moisture separators with integral drainage. The choice depends on operating pressure, temperature, steam quality requirements, and flow rate. Materials are selected for steam compatibility, typically stainless steel or high-grade alloys in corrosive environments.

Applications span thermal power plants, refineries, petrochemical plants, paper mills, and district heating systems, wherever high-pressure steam is used and high steam quality is required. They are often used upstream of turbines and downstream of steam generators to protect equipment and improve efficiency.

Design considerations include target dryness fraction, allowable moisture content, system pressure, temperature, and maintenance needs. Regular inspection of drains, filters, and seals is essential to maintain performance and prevent leaks.

See also: steam trap, condensate separator, steam system, dryness fraction.