Desuperheaters for Biomass Boilers

By conditioning steam temperature, desuperheaters can help protect piping, steam traps and rotating seals from unsuitable steam conditions. B-Tech Valve designs spray-ring and probe-type variable-nozzle units for steam systems in power and process plants. Proper application sizing and installation are important for achieving the required water distribution and downstream temperature control.

The SPAD Small Pipe Attemperator Desuperheater uses a fixed-nozzle spray-ring design and clamps between two steam pipe flanges. It is fed water from a separate temperature control valve. B-Tech Valve identifies the SPAD as a small-pipe solution, while final selection should be based on the customer’s line size, pressure, temperature and steam conditions.

The LPD Large Pipe Desuperheater uses a probe-type variable-nozzle fully actuated control valve and is designed for pipe sizes of 6 inches and larger. Its 90-degree flanged insertion allows installation on the steam pipe. Application review should confirm operating conditions, control requirements and compatibility with the existing steam system.

The listed desuperheater products are available in ASME B16.34 pressure classes 150, 300, 600, 900, 1500, 2500 and 2700. Product information identifies temperature ratings up to 1,200°F (650°C). The correct pressure class and temperature rating must be selected against the actual biomass boiler steam-system requirements.

Yes. The Steam Attemperator is identified as sized for each customer’s application, and B-Tech Valve positions its products as application-sized steam and gas desuperheater and attemperator valves. Provide line size, steam conditions, pressure class, temperature requirements, water supply details and control needs so the suitable configuration can be reviewed.

Selection typically requires the steam pipe size, operating pressure, temperature, desired downstream condition, available spray water, connection arrangement and control requirements. The product range includes fixed-nozzle spray-ring and variable-nozzle probe designs, with flange mounting options described for each. B-Tech Valve can review the application and identify an appropriate product configuration.