Carraro - Desuperheater VariCryo

VARIcryo Desuperheater

The VARIcryo desuperheater from Carraro is specially designed for cryogenic applications, capable of handling liquid LNG at temperatures as low as -150°C. It ensures safe and efficient operation in low-pressure environments like ship loading systems and gas compression stations, with additional features for insulation and protection against gas pockets.

The VARIcryo gives you following benefits:

Handles extreme temperatures
Durable stainless steel
Suitable for low pressure
Advanced insulation protection.

For sales or commercial inquiries please contact us at marine@insatech.com.

Enhanced Insulation and Safe Operation

In cryogenic environments, insulation is critical. The VARIcryo desuperheater features advanced insulation to prevent dangerous gas pockets and avoid icing on sensitive components such as stuffing boxes and control valves. Its design includes an extended valve bonnet, ensuring smooth operation even under the most demanding cryogenic conditions.

Additionally, the desuperheater’s long extension system and symmetrical thermal design prevent thermal stresses, maintaining consistent performance and minimizing the risk of equipment damage over time. This makes it a reliable choice for industries requiring long-term, safe, and precise temperature regulation.

Key Features of the VARIcryo Desuperheater

The VARIcryo has several benefits. See some of them listed below:

Designed for cryogenic applications (-130°C to -150°C)
Constructed with stainless austenitic steel
Operates in low-pressure environments (up to 10 bars)
Enhanced insulation for safety and efficiency
Long bonnet extensions to prevent icing and gas pockets.

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Solutions for Diverse Industries

The VARIcryo are designed to deliver precise steam temperature control and efficient water atomization across a range of applications such as:

Process gases
Steam.

The various industries which the desuperheater is suitable for includes, but is not excluded to:

Marine
Oil & gas
General industry
Power.

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Cryogenic Precision with VARIcryo

The VARIcryo desuperheater is specifically designed for cryogenic applications, handling extreme low temperatures down to -150°C. It plays a crucial role in systems that manage liquid natural gas (LNG), nitrogen, oxygen, and other cryogenic gases.

By efficiently injecting cold liquids into a gas stream, the VARIcryo ensures accurate temperature control, even under low pressure conditions. Its construction from durable austenitic stainless steel provides the robustness needed to operate safely at such extreme conditions, making it ideal for applications like ship loading systems and gas compression stations.

Parts for the VARIcryo

The VARIcryo has several parts, we have listed them below (and see the drawing):

Spray nozzle assembly
Spray nozzle assembly
Piston ring Aluminium
Piston
Fastener ring
Bushing
Stem (*)
Plug (*)
Body pipe
Liquid flange
Gasket (*)
Packing set (*)
Stud
Follower (*)
Nut
Packing flange
Nameplate
Body
Seat(*)
Cage
Gasket (*)
Gasket (*)
Extension
Spacer (*)
Bonnet
Extension
Bushing (*)
O-rings (*)
Disc Spring
Spacer.

(*) Recommended spare parts

How do you install the VARIcryo?

Let us guide you step by step in the installation of your VARIcryo desuperheater.

Pre-Installation Check:

Inspect the desuperheater, actuator, and accessories for damage.
Verify the data plate and tag number match the order specifications.

Unpacking:

Use slings to lift the unit, avoiding the liquid inlet and actuator.
Keep flange coverings on until just before installation.

Installation Process:

Use standard-compliant gaskets and fasteners.
Insert the nozzle into the secondary pipe, ensuring it aligns with the process gas flow.
Avoid any external forces, tension, or torque during installation.

Positioning:

Ensure the spray cylinder aligns with the vapor line axis (±5 mm).
Adhere to the specified distances for tube length downstream (minimum 4.6 m) and between the desuperheater and temperature sensor (12-15 m).

Final Considerations:

Avoid bends in the downstream pipe to prevent erosion.
Install the temperature sensor in the top half of the pipe, ensuring no branches between the desuperheater and sensor.

Below we have specified the numbers on the drawing: