Fired Heater for Heat Recovery Steam Generator (HRSG) application
The high pressure superheaters are of finned tube design and
arranged for efficient heat transfer. Steam side pressure drop is
minimized, but be sufficient to achieve good steam flow
distributions.
The high pressure superheaters tube banks are interspersed in a
series configuration as shown on the flow diagram so that all of
the exhaust gas flows through the high pressure superheater.
1. Steam Drums for HP System(HAD10BB001)
2. HP Superheaters (HAH10, HAH20)
3. HP Evaporator (HAD10)
4. HP Economizers (HAC10)
5. Condensate Preheater (HAA10)
1. Heat Recovery Steam Generator (HRSG)- HP superheaters:
- Tube O.D : 44.5 mm.
- Tube W.T : 2.6 mm.
- Finned Tube Length (gas path) : 21600 mm.
- Fin Type: High Frequency Welding and Serrated Type .
- Material (tube/fin) : SA213 T91 / 409SS
- Finned tube Q’ty : Depend on buyer.
- Finned thickness : 1.27mm.
- Finned Hight : 17mm.
- Fin Q’ty : 150 fins/meter
- Bare Length: 300mm/ 300mm
- Tube O.D : 38.1 mm.
- Tube W.T : 2.6 mm.
- Finned Tube Length (gas path) : 21600 mm.
- Fin Type: High Frequency Welding and Serrated Type .
- Material (tube/fin) : SA213 T91 / 409SS
- Finned tube Q’ty : Depend on buyer.
- Finned thickness : 1.27mm.
- Finned Hight : 17mm.
- Fin Q’ty : 150 fins/meter
- Bare Length: 300mm/ 300mm
2. Heat Recovery Steam Generator (HRSG)- HP Evaporator:
- Tube O.D : 38.1 mm.
- Tube W.T : 2.6 mm.
- Finned Tube Length (gas path) : 21600 mm.
- Fin Type: High Frequency Welding and Serrated Type .
- Material (tube/fin) : SA210 A1 / 409SS
- Finned tube Q’ty : Depend on buyer.
- Finned thickness : 1.27mm.
- Finned Hight : 16mm.
- Fin Q’ty : 275 fins/meter
- Bare Length: 300mm/ 300mm
- Tube O.D : 38.1 mm.
- Tube W.T : 2.6 mm.
- Finned Tube Length (gas path) : 21600 mm.
- Fin Type: High Frequency Welding and Serrated Type .
- Material (tube/fin) : SA210 A1 / A1008 CS
- Finned tube Q’ty : Depend on buyer.
- Finned thickness : 1.27mm.
- Finned Hight : 17mm.
- Fin Q’ty : 275 fins/meter
- Bare Length: 300mm/ 300mm
3. Heat Recovery Steam Generator (HRSG)- HP economizer system:
- Tube O.D : 38.1 mm.
- Tube W.T : 2.6 mm.
- Finned Tube Length (gas path) : 21600 mm.
- Fin Type: High Frequency Welding and Serrated Type .
- Material (tube/fin) : SA210 A1 / A1008 CS
- Finned tube Q’ty : Depend on buyer.
- Finned thickness : 1.27mm.
- Finned Hight : 17mm.
- Fin Q’ty : 275 fins/meter
- Bare Length: 300mm/ 300mm
4. Heat Recovery Steam Generator (HRSG)- Condensate Preheater system:
- Tube O.D : 38.1 mm.
- Tube W.T : 2.6 mm.
- Finned Tube Length (gas path) : 21600 mm.
- Fin Type: High Frequency Welding and Serrated Type .
- Material (tube/fin) : SA192 / A1008 CS
- Finned tube Q’ty : Depend on buyer.
- Finned thickness : 1.27mm.
- Finned Hight : 16mm.
- Fin Q’ty : 275 fins/meter
- Bare Length: 300mm/ 300mm
HRSG stands for Heat Recovery Steam Generator. It is a key
component in combined - cycle power plants and has several
advantages, mainly in terms of energy efficiency, environmental
protection, and operational flexibility:
- High Energy Efficiency
- Waste Heat Utilization: HRSG allows for the recovery of waste heat from the exhaust gases
of gas turbines or other heat - generating processes. This
otherwise wasted heat is used to produce steam, which can then be
used to drive a steam turbine and generate additional electricity.
By capturing and utilizing this waste heat, HRSG significantly
increases the overall efficiency of the power generation process.
For example, in a combined - cycle power plant, the use of HRSG can
increase the overall efficiency from around 40% - 45% for a simple
- cycle gas turbine plant to 55% - 60% or even higher.
- Cogeneration Capability: In addition to electricity generation, HRSG can also be used for
cogeneration applications. The steam produced by the HRSG can be
used for industrial processes, heating buildings, or other thermal
applications. This combined production of electricity and useful
heat further enhances the energy efficiency of the system and
reduces the need for separate heat - generating equipment.
- Environmental Benefits
- Reduced Fuel Consumption: Due to its ability to recover waste heat and increase energy
efficiency, HRSG reduces the amount of fuel required to produce a
given amount of electricity. This, in turn, leads to a decrease in
greenhouse gas emissions, such as carbon dioxide (CO₂), sulfur
dioxide (SO₂), and nitrogen oxides (NOₓ). For example, a power
plant equipped with an HRSG may consume 15% - 20% less fuel
compared to a plant without heat recovery, resulting in a
significant reduction in emissions.
- Lower Emissions: The improved efficiency of HRSG - equipped power plants also
means that less fuel is burned, which leads to lower emissions of
pollutants per unit of electricity generated. This helps power
plants meet increasingly stringent environmental regulations and
reduces the environmental impact of power generation.
- Operational Flexibility
- Load - Following Capability: HRSG can quickly respond to changes in electricity demand by
adjusting the steam production rate. This is achieved by varying
the amount of heat recovered from the exhaust gases, which can be
controlled by adjusting the flow rate of the cooling water or the
position of the dampers in the HRSG. As a result, power plants with
HRSG are better able to follow the daily and seasonal variations in
electricity demand, providing a more stable and reliable power
supply.
- Combined - Cycle Operation: HRSG enables the integration of gas turbines and steam turbines
in a combined - cycle configuration. This allows for more efficient
power generation by utilizing the different operating
characteristics of the two types of turbines. The gas turbine can
provide quick - start and high - efficiency operation at partial
loads, while the steam turbine can operate efficiently at full
load. The combination of the two turbines, with the help of HRSG,
offers a flexible and efficient power generation solution for a
variety of applications.
