venturi desuperheater
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VENTURI DESUPERHEATER

WORKING PRINCIPLES

In the IMTECH-KIEKENS VENTURI style DESUPERHEATER the cooling water enters the VENTURI through a special streamlined spray nozzle. On the surface of this spray nozzle a thin film of the water will be formed. The dynamic energy of the incoming steam flow breaks the surface tension of the film, creating a conical shaped, spray (at slightly lower pressure) of atomized cooling water.

Correct mixing is attained by the turbulence of the steam flow, which is caused by the interaction of the VENTURI effect and the specially shaped spray nozzle. The result is rapid and total evaporation of the cooling water. As a consequence, optimal and swift temperature control adjustments are possible. This also avoids the need for any protective liners in downstream piping.

CONSTRUCTION

The body of a VENTURI style DESUPERHEATER can be made of various kinds of forged steel. The material varies from carbon, light- & high alloy and stainless steel to special materials. Spray nozzle and its matching parts are always made of stainless steel.

According to specific requirements, an IMTECH-KIEKENS VENTURI style DESUPERHEATER can be installed into a piping system with either flanged connections or welded joints. All units are made according to ANSI, BS, DIN, JIS or any other accepted international standard as specified by the customer.

ADVANTAGES

Custom design:
For any size, standard or capacity

Simple installation:
Installation is possible in any position. Short straight pipe runs. Limited control loops.

Easy maintenance:
No moving parts, no pipe liners and no welding in the construction. Large spray aperture avoids the spray nozzle becoming chocked.

Energy saving:
No need for a water supply pressure significantly higher than operating steam pressure and no need for atomizing assist steam.

Large desuperheating range:
It is possible to handle extremely large differences in enthalpy between the incoming and outgoing steam flow.

Reliability:
Units can be in operation for over 30 years, without any maintenance required.