MULTIPLE NOZZLE SPRAY DESUPERHEATER

Product catalog summary

Overview
The Multiple Nozzle Spray Desuperheater (MNSD) models MNSD-V and MNSD-U are designed to provide high temperature capabilities and low coolant leakage with a Class V rating. These desuperheaters offer a balance between simple mechanical spray types and advanced variable orifice models, suitable for applications requiring high turndown ratios without the need for atomizing steam.

Features

Temperature control within 15°F (8°C) of saturation, maintaining set points within 10°F (6°C).
Standard maximum Cv of 10.5 (Kv of 8.9) and waterflow turndown of 150:1 or higher.
User-friendly design allowing nozzle and trim assembly removal without actuator disconnection.
Operates at temperatures up to 1150°F (620°C) and cooling water inlet pressures up to 3500 psig (24 MPag).
Available in ANSI classes 600, 900, 1500, and 2500.
Suitable for vertical or horizontal installation with standard ANSI connections.

Design and Operation
The MNSD-V features a cage-guided plug within the nozzle tube, allowing for easy orientation of the cooling water inlet. The cooling water is controlled by the actuator, modulating flow through characterization slots before reaching the discharge nozzles. This design ensures efficient atomization and rapid absorption of the cooling medium.

Materials of Construction

Body Casting: ASTM A217, Grades WC6, WC9, C12A; ASTM A351, Grade CF8M.
Cage & Torque Ring: ASTM A565, Grade 616, Type 422, Hardened.
Other components include various stainless steels and hardened materials for durability.

Sizing and Installation
Sizing is performed using the SmartSize program, considering factors like steam flow rates, pressures, and temperatures. Installation recommendations include using a thermal liner for high temperature differences and a strainer for unfiltered cooling mediums.

Applications
Typical applications include power generation, chemical processing, refineries, and pulp & paper industries. The MNSD-V is particularly suited for scenarios where high turndown ratios are needed without the cost of advanced desuperheaters.

Catalog excerpts

MULTIPLE NOZZLE SPRAY DESUPERHEATER MNSD-V & MNSD-U

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Celeros Flow Technology is a full- lifecycle partner for sustainable flow technology TYPICAL PRODUCT solutions, from initial design and installation of equipment to after sales support, throughout an asset's full operational lifecycle. Celeros FT’s products and technologies support many different sources of power generation, including coal and natural gas, nuclear, solar and geothermal. The company's innovative product portfolio, containing many energy efficient products, includes valves, pumps and filters. Celeros FT manufactures the Copes-Vulcan general service and severe duty control valves,...

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COOLING WATER As the plug is extended by the actuator under the The cooling water is admitted to the nozzle tube signals of the temperature control loop, cooling water assembly through the branch in the mounting head. is throttled at each exposed nozzle through flow SIZING SELECTION charaterization slots located just prior to the discharge The MNSD-V/MNSD-U and all Copes-Vulcan desuperheaters can be sized by Copes-Vulcan or an authorized sales representative using It reaches the lower portion of the nozzle tube assembly as the plug exposes the nozzles. With the plug seated, SmartSize computer...

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INSTALLATION RECOMMENDATIONS For optimum control and performance, apply the following guidelines: • If the difference between the cooling medium an the header vapor temperature is greater than 450°F (250°C), and if the main header wall thickness is greater than .5" (12mm), a thermal liner is recommended. • For applications where unfiltered cooling medium is used, a 30 mesh strainer is recommended for installation upstream of the cooling medium inlet. TYPICAL INFORMATION REQUIRED TO SIZE: • Process steam flow rates • Process steam pressure • Process steam temperature (superheated) • Desired process...

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MNSD-V & MNSD-U MULTIPLE NOZZLE SPRAY DESUPERHEATER QCOPES VULCAN* SPEED I EXCELLENCE I PARTNERSHIP Road Two Industrial Estate Winsford, Cheshire CW7 3QL England P: +44 1606 552041 F: +44 1606 558275 E: [email protected] Celeros Flow Technology reserves the right to incorporate our latest design and material changes without notice or obligation. Design features, materials of construction, and dimensional data, as described in this bulletin, are provided for your information only and should not be relied upon unless confirmed in writing. Please contact your local sales representative...

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