Steam Engineering Products

Pressure Desuperheating and Desuperheating Stations

In steam systems, precise temperature control is often critical for various processes and equipment. Pressure desuperheating and desuperheating stations play a vital role in achieving this control by reducing the temperature of high-pressure steam to a desired level.

Specifications

Steam Engineering Products - Pressure Desuperheating and Desuperheating Stations

Size Range

15 NB x 15 NB to 300 NB x 500 NB and Higher size as per Requirement.

Body Materials

Carbon Steel (A216 Gr. WCB) / Alloy Steel (A217 Gr. WC6/WC9) / A182 (F11/F22)

Temperature Range

-29 C to 1150 C

Stem Materials

Carbon Steel (A216 Gr. WCB) / Alloy Steel (A217 Gr. WC6/WC9) / A182 (F11/F22)

Maximum Allowable Operating Pressure

IBR approved ANSI Class 150, 300, 600, 900, 1500 & higher on request

Shutoff Rating

Class IV, V

Certifications

IBR

End Connection

Flanged / Butt Weld / Socket Weld

Features:

- Pressure Desuperheating: This technique involves injecting atomized water spray directly into the high-pressure steam flow. The water absorbs heat from the steam, reducing its temperature without significantly affecting the pressure.
- Desuperheating Stations: These are pre-engineered units housing the necessary components for pressure desuperheating. They typically include:
  - Control Valve: Regulates the water flow rate injected into the steam for precise temperature control.
  - Water Injection System: Delivers atomized water spray to ensure efficient heat transfer.
  - Mixing Chamber: Provides adequate space for thorough mixing of the desuperheated steam and water.
  - Temperature Sensors: Monitor the inlet and outlet steam temperatures for control purposes.

Benefits:

- Precise Temperature Control: Enables accurate regulation of steam temperature to meet specific process or equipment requirements.
- Improved Efficiency: Prevents overheating and potential damage to equipment designed for lower steam temperatures.
- Enhanced Process Control: Consistent steam temperature ensures predictable and optimal performance in various steam-based processes.
- Reduced Risk of Overheating: Protects downstream equipment from potential damage caused by excessively hot steam.
- Safe Operation: Contributes to a safer operating environment by maintaining steam temperatures within safe limits.

FAQs:

A. What factors influence the selection of a desuperheating station?

- Required steam flow rate and pressure
- Desired outlet steam temperature
- Available space for installation
- Control system requirements

B. How are desuperheating stations controlled?

- They can be controlled manually or through automated systems using temperature sensors and control valves.

C. What are the maintenance requirements for desuperheating stations?

- Regular inspection and maintenance of the control valve, water injection system, and mixing chamber are crucial for optimal performance.

D. Are there any alternatives to pressure desuperheating?

- Spray desuperheating: Similar to pressure desuperheating but injects water at a lower pressure zone.
- Steam mixing stations: Mix steam from different sources to achieve the desired temperature.

E. Can lined butterfly valves handle high temperatures and pressures?

Yes, they are designed to withstand a wide range of temperatures and pressures, depending on the specific lining and materials used.