Thermal Inertia of 330 MW Circulating Fluidized Bed Boiler during Load Change

Article Thermodynamics

Restart-up Performance of a CFB Boiler after a Sudden Power Failure Accident

Yao Yuge et al.

Summary: This study investigates the restart-up performance of a 170 t/h natural circulation CFB boiler after a sudden power failure and evaluates the feasibility of hot restart-up. Key factors influencing bed temperature and the maximum air supply time and accident duration time for different types of coals during hot restart-up are proposed. Results indicate the importance of coal ignition temperature in the restart-up process.

JOURNAL OF THERMAL SCIENCE (2022)

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Article Engineering, Chemical

Modeling of the axial distributions of volatile species in a circulating fluidized bed boiler

Xiwei Ke et al.

Summary: In this study, a mathematical model was developed to understand and describe the spatial distributions of volatile species in CFB reactors. The model consists of a one-dimensional fluid dynamic model and a single fuel particle devolatilization model, validated by experiments. Simulation results show that volatile species exhibit a vertical release profile, influenced mainly by the wide size range of feeding fuel.

CHEMICAL ENGINEERING SCIENCE (2021)

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Article Energy & Fuels

1-Dimensional modelling of in-situ desulphurization performance of a 550 MWe ultra-supercritical CFB boiler

Xiwei Ke et al.

Summary: This study investigated the in-situ desulphurization performance of a 550 MWe ultra-supercritical circulating fluidized bed boiler through simulation. The results showed that using fine limestone with a median diameter of 50 μm can achieve a desulphurization efficiency of up to 95%. Additionally, improving cyclone efficiency and reducing limestone particle size can enhance desulphurization performance.

FUEL (2021)

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Article Thermodynamics