Desuperheater is a device used to save the energy by cooling a superheated steam in a power generation plant. Superheated steam has important advantages on certain applications, for example, when used in power stations to drive turbines. For efficient use on heating applications however, the steam must be desuperheated.
Desuperheating is the process by which superheated steam is restored to its saturated state, or the superheat temperature is reduced. Basically there are two types of superheaters.
• Indirect contact type - The medium used to cool the superheated steam does not come into direct contact with it. A cooler liquid or gas may be employed as the cooling medium, for example, the surrounding air. Examples of this type of desuperheater are shell and tube heat exchangers.
• Direct contact type - The medium used to cool the superheated steam comes into direct contact with it. In most cases, the cooling medium is the same fluid as the vapour to be desuperheated, but in the liquid state. For example, in the case of steam desuperheaters, water is used.
Design Features of a Desuperheater
- High efficient atomization.
- Accurate and repeatable control fluid temperature.
- Tight shut off variable spray unit.
- High range ability variable area spray unit.
- Erosion resistance materials of selection.
- Ease of installation.
- Low maintenance features.
- High integrity sealing arrangement.
- Thoroughly checked at factory to ensure that it meets the specified performance on site with high integrity.
- Quality assurance at every stage of manufacturing.
- Comprehensively designed and tested to ensure its optimum performance for the tough process Parameters specified.
Advantages of Maniks Desuperheater
- Reduction in condenser pumps power consumption.
- Minimal pressure drop
- Compact designs
- Design code compliant
- Range of outlet superheat capabilities
- Variety of standard materials
- Horizontal or vertical orientation with upward flow
Applications of Desuperheater:
- HOTELS & HOSPITALS:
Water for Bathing/ Sterilizing/ Kitchens/ Laundries
- PHARMACEUTICAL & CHEMICAL:
Dehumidifiers/ Calorifiers/ Autoclaves/ Boiler Feed/ Air Preheating/ Tablate Coating Machines
- DAIRY & FOOD PROCESSING:
Hygienic Washing & Cleaning/ Boiler Feed/ Chocolate Tracing/ Powder Drying/ Dehumidifiers
- TEXTILE:
Dehumidifiers/ Yarn Drying/ Preheating/ Boiler Feed
- ENGINEERING & AUTOMOBILE:
Boiler Feed/ Degreasing/ Washing & Cleaning/ Paint Shop Processes
Thanks,
Rajesh Kharche
CAclubindia
