Masoneilan DSH Model Desuperheaters

• Size

  Pipe Sizes: 4” through 48” (100 through 1200 mm)

  Ratings & Connections

  flanged: ANSI 150 - 2500 UNI-DIN 10 - 400; welded: BW

  Body Materials

  carbon steel; chrome-moly

  Spray Nozzle Cv

  Individual nozzle Cv = 0.4, 0.8, 1.5, 3.0, 5.0, 10.0

  Combined DSH Nozzle Cv range 0.4 through 80+

  Water Manifold

  Connection size 1” through 6” (25 through 150 mm); welded & flange options

   

  Description

  The DSH Desuperheater serves as a means of controlling steam temperature, mainly in boiler and Heat Recovery Steam Generator (HRSG) applications within the power industry. The Masoneilan DSH is designed to meet ASME B31.1, and can be manufactured under ASME Boiler & Pressure Vessel Code Section 1 welding S-Stamp to comply with installations within the boiler or HRSG boundary limits.

  During operation of the DSH Desuperheater, steam enters the DSH and atomized water is sprayed into the flow to reduce the steam temperature, as the water evaporates into the process steam. The spray water is controlled by a separate water supply valve, in response to a control loop that monitors downstream pressure.

  Within the DSH series, Masoneilan offers both a radial spray style desuperheater (DSH-1XX), as well as an insertion style desuperheater (DSH-200), depending on customer need and application. Within the DSH-1XX series, there is both a flow profiler style (DSH-110) and a liner style (DSH-120) desuperheater option to optimize temperature profile and protect piping from thermal stress.