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Velocity and Temperature Simulation for a Cylindrical Regenerative Thermal Oxidizer
Kaiming Ren1, Zhijun Zhang2, Haixiang Qin1
1Harbin Institute of Technology, Weihai, Shandong 264209, China.
ACS Omega
|April 15, 2024
Summary
The cylindrical regenerative thermal oxidizer (CRTO) shows improved thermal efficiency and more uniform temperature distribution compared to the three-chamber regenerative thermal oxidizer (TRTO). This advanced design offers better heat absorption and release, enhancing industrial applications.
Area of Science:
- Chemical Engineering
- Environmental Engineering
- Thermal Engineering
Background:
- Cylindrical regenerative thermal oxidizers (CRTOs) are increasingly used but understudied compared to three-chamber regenerative thermal oxidizers (TRTOs).
- CRTOs offer a smaller footprint with a larger regenerator volume for enhanced heat exchange.
- Existing research on CRTO performance is limited, necessitating further investigation.
Purpose of the Study:
- To investigate the thermal performance and flow dynamics of a CRTO through simulation.
- To compare the operational characteristics of a CRTO with a TRTO.
- To identify potential improvements in thermal efficiency and temperature uniformity.
Main Methods:
- Error analysis of industrial and simulated data for CRTO velocity and temperature.
- Comparative simulation of a CRTO and a TRTO with similar primary parameters.
- Analysis of velocity and temperature distribution within the regenerative and oxidation chambers.
Main Results:
- CRTO regenerative chambers exhibited stratification and gradients post-homogenization.
- Oxidation chamber temperature and velocity distributions were periodic and independent of inlet/outlet positions.
- CRTO regenerative chambers had longer intake/exhaust periods (30s longer than TRTO) and increased heat storage volume (1/6 more than TRTO).
Conclusions:
- CRTO demonstrates superior thermal efficiency (approx. 3% increase) and improved velocity/temperature uniformity (approx. 2% increase) in the regenerative chamber compared to TRTO.
- The design of CRTO facilitates more effective heat exchange due to its larger regenerator volume.
- Further research into CRTO applications is warranted given its performance advantages.
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