DeSuperHeater
Hits : 4349 |
Desuperheater :
Superheated steam is not always desirable,for instance in those applications that heat transfer coefficient is important, saturated steam is preferred. Desuperheaters can reduce the temperature of steam or any other superheated vapor near to its saturated temperature by means of water or another coolant. Water is introduced into the process line and comes into direct contact with the superheated steam.
DeSuperHeater
:General Usage
In order to reduce the outlet temperature of superheated medium to its . saturation temperature inttemperature control .
You can learn more about desuperheaters by reading our catalog here :
Karajet Desuperheater Types
- Covering wide range of applications
- Custom-designed according to operating conditions
- The possibility of supplying control valves and other required accessories
Applicable Materials
· Stainless Steel
· Carbon Steel
· Low alloy steel
· Hastelloy
Design Codes/ Standards
· ASME Sec. VIII, div. 1
· ASME B31.3
Quality Assurance
· ISO9001:2008
Desuperheater Types
There are various types of desuperheater available so evaluation of the process duty is crucial to ensure selection of the right equipment.Turndown capability, pressure drop and outlet superheat play lead roles in desuperheater design and selection.
Venturi Type Desuperheater
Cooling medium is piped into the venturi nozzle and atomized. Venturi types are subdivided into the followings:
Spray Type Desuperheater
In water spray desuperheaters, superheated steam is passed through a section of pipe fitted with one or more spray nozzles. These inject a fine spray of cooling water into the superheated steam, which causes the water to be converted into steam, reducing the quantity of superheat.
:Typical Applications in Industries
-
Stabilizing superheat after boiler, since boilers produce variableSteam moistening plants in textile industry
-
temperature steam in process industries.
-
Turbine bypass systems in power plants.
-
Before surface condensers to increase the efficiency and prevent stresses by thermal expansions in oil and gas industries, petrochemical plants and power plants.
-
To improve heat transfer of surface type heat exchangers in oil and gas industries, petrochemical plants and food industry.
-
To control superheat temperature when boilers does not work at their full load in power plants, chemical industry and food industry.
-
In paper and board industry for paper drying machines.
-
In pharmaceutical industry for process heaters.