Modeling More Than 10 Convection Banks in Aspen Fired Heater Using Aspen HYSYS and EDR
Project Description
Aspen Fired Heater in the Aspen Exchanger Design and Rating (EDR) suite allows a maximum of 10 convection banks when working in the standalone EDR interface. In large industrial fired heaters, however, the number of convection banks can exceedthislimitation.Toovercomethisissue,AspenHYSYScanbeintegratedwith Aspen EDR using the Activated feature, allowing multiple fired heater models to work together as a single system.
In this project, two or more Fired Heater blocks are connected in Aspen HYSYS to simulate one actual fired heater containing more than 10 convection banks. Each Fired Heater block is attached to its own EDR file, where every model handles a separate group of convection banks. The process stream and flue gas stream are connected between the heater blocks to accurately represent the thermal and flow behavior of the real industrial equipment.
The project mainly focuses on maintaining proper counter-current flow arrangement between the process stream and the flue gas stream. The process stream enters the top convection bank first and exits from the bottom bank, while the flue gas follows the opposite direction. This integrated Aspen HYSYS and EDR approach improves simulation flexibility, allows accurate thermal analysis, and supports the modeling of large-scale fired heater systems with multiple convection banks.
Process Flow Diagarm
Optimization Strategy
Efficient operation of fired heaters with multiple convection banks requires proper integration between Aspen HYSYS and Aspen EDR. The simulation must ensure accurate process stream routing and proper flue gas flow distribution across all connected heater sections. Effective operational strategies improve heat recovery, thermal efficiency, and simulation stability.
The operational methodology also focuses on maintaining balanced heat transfer between the process stream and flue gas stream in a counter-current arrangement. Proper connection between the heater blocks allows accurate representation of real equipment behavior while minimizing thermal losses and maintaining stable operating conditions.
Multiple Fired Heater Block Integration
This strategy involves connecting two or more Fired Heater blocks in Aspen HYSYS to represent one large fired heater system. Each heater block uses its own EDR file and handles aspecific number of convectionbanks. Thisapproach allowssimulation of fired heaters containing more than the standard 10-bank limitation.
Counter-Current Flow Arrangement
The process stream and flue gas stream are connected in opposite directions to simulate real industrial fired heater behavior. The process stream flows from the top bank to the bottom bank, while the flue gas travels from the bottom bank to the top bank. This arrangement improves heat transfer efficiency and thermal performance.
Heat Transfer and Flow Optimization
This strategy focuses on optimizing heat transfer between the flue gas and process stream across all convection banks. Engineers analyze stream routing, bank arrangement, and flue gas distribution to improve thermal efficiency, reduce energy losses, and maintain stable heater operation.
Projects Insight
Understanding Convection Banks
- Convection banks recover heat from flue gases.
- Large fired heaters may require more than 10 banks.
- Proper bank arrangement improves thermal efficiency.
Aspen HYSYS and EDR Integration
- Aspen HYSYS connects multiple heater models together.
- Each Fired Heater block uses a separate EDR file.
- Integration improves simulation flexibility and accuracy.
Counter-Current Flow Importance
- Process and flue gas streams flow in opposite directions.
- Counter-current flow improves heat transfer performance.
- It accurately represents real industrial heater operation.
Heat Transfer Performance
- Multiple banks increase heat recovery efficiency.
- Proper thermal analysis reduces energy losses.
- Balanced heat transfer improves heater stability.
Stream Routing and Flow Distribution
- Correct stream routing maintains stable operation.
- Flue gas distribution affects convection bank performance.
- Proper flow arrangement minimizes thermal imbalance.
Industrial Applications
- Used in refinery and petrochemical fired heaters.
- Important for large industrial heating systems.
- Supports advanced thermal and energy optimization.
Conclusion
The modeling of more than 10 convection banks in Aspen Fired Heater using Aspen HYSYS and Aspen EDR provides an effective solution for simulating large industrial heater systems. By connecting multiple Fired Heater blocks with separate EDR files, engineerscan accurately represent process stream and flue gas flow behavior across multiple convection banks. This integrated approach improves thermal efficiency, simulation flexibility, and operational performance in refinery and petrochemical heating applications.