Boiler design for ultra supercritical coal power plants superheater
and reheater
Superheater located position in boiler
1. Superheaters are generally placed where the flue gases are hot.
There is still a lot of molten ash and reactive gases.
2. This places an extra burden on the mechanical construction of
superheaters.
3. Because superheaters have to be built for optimal behavior in an
often hostile environment that differs from boiler to boiler, there
are very many different types of superheater
Differences between superheater and reheater
1. Superheaters and reheaters are specially designed to increase
the temperature of the saturated steam and to help control the
steam outlet temperature.
2. They are simple single-phase heat exchangerswith steam flowing
inside and the flue gas passing outside, generally in the cross
flow. Superheaters and reheaters are often divided into multiple
sections to help control steam temperature and optimize heat
recovery, and their heating surfaces can be arranged either
horizontally or vertically.
3. The physical design and location of the surfaces is dependent on
the desired outlet temperature, heat absorption, fuel ash
characteristics and cleaning equipment. The main components are
usually manufactured from steel alloys, as both the superheater and
reheaters are operated at high temperature.
Steam Superheater in Boiler Manufacturer in DHB
1. Our boiler superheaters come with adequate safety features to
prolong the life of a superheater as well as your equipment where
the steam is used.
2. The safety valve is installed in a super-heater to prevent
operating pressure to exceed the design pressure of a superheater
in the boiler.
3. We manufacture steam superheaters that suit different type of
fuels such as:
- Solid Fuels (Wood, Rice Husk, Bagasse, Coal)
- Liquid and Gas fuels (Light and Heavy Oils, Natural Gas)
- Electrical operated steam boiler superheaters.
Benefits of Superheaters in Boilers
| 1 | Increase in efficiency of the steam power plant |
| 2 | Minimized erosion of turbine blade |
| 3 | Less steam consumption |
| 4 | Reduction of condensation loss in the boiler steam pipes |
| 5 | Increases the temperature of saturated steam by removing entrained
water particles from turbines steam |
Packing Picture
