전산유동해석을 이용한 100MWe급 석탄 순산소 연소 실증 보일러의 설계 및 운전조건 평가
Numerical Simulation of a 100MWe-scale Wall-fired Boiler for Demonstration of Oxy-coal Combustion
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초록
As one of the main technologies for carbon capture and storage in power generation, oxy-coal combustion is being developed for field demonstration in Korea. This study presents the results of numerical simulation for combustion in a single-wall-fired 100MWe-scale boiler proposed for the initial design of the demonstration plant. Using a commercial CFD code, the detailed combustion, flow and heat transfer characteristics were assessed both for air-mode and oxy-mode combustion. The results show that stable combustion can be achieved in the dual mode operation with the current boiler configuration. However, the differences in the flow pattern and heat transfer between the two combustion modes need to be considered in the design and operation which is mainly due to the larger density and specific heat of CO₂ compared to N₂. Further development of the boiler design is required using improved numerical modeling for radiative heat transfer and combustion.
Abstract
As one of the main technologies for carbon capture and storage in power generation, oxy-coal combustion is being developed for field demonstration in Korea. This study presents the results of numerical simulation for combustion in a single-wall-fired 100MWe-scale boiler proposed for the initial design of the demonstration plant. Using a commercial CFD code, the detailed combustion, flow and heat transfer characteristics were assessed both for air-mode and oxy-mode combustion. The results show that stable combustion can be achieved in the dual mode operation with the current boiler configuration. However, the differences in the flow pattern and heat transfer between the two combustion modes need to be considered in the design and operation which is mainly due to the larger density and specific heat of CO₂ compared to N₂. Further development of the boiler design is required using improved numerical modeling for radiative heat transfer and combustion.
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