Approximate velocity scale for primary and secondary dual-inlet side-dump flows

Jung, Sung Eun; Park, Byung Hoon; Ko, Heung Kyu; Yoon, Woong

doi:10.1007/s12206-008-1227-6

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Calculation Methods and Meshing1

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2023

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“…The number of meshes is 4.7 million, where the result of surface meshing is shown in Figure 2. The k-ε dual equation model is mathematically described as follows [10] :…”

Section: Calculation Methods and Meshingmentioning

confidence: 99%

Study and management of flow and concentration field problems in 600 MW SCR unit

Zhao,

Zhang,

Wang

et al. 2023

J. Phys.: Conf. Ser.

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With the increasingly stringent national requirements for environmental protection, the control of pollutants in coal-fired power plants has been gradually strengthened. In order to meet the NOx emission standard, some coal-fired units achieve ultra-low emissions by excessive ammonia injection, which seriously affects the unit operation economy. This paper takes the SCR denitrification unit of a 600 MW coal-fired unit with a Π-type furnace in China as the research object and studies the distribution of flow and concentration fields inside the unit under a 60% load section by means of CFD numerical simulation. It points out the problems of flow and concentration fields at local locations under current operating conditions and proposes the rectification of the corresponding area of the inflow equipment and the idea of a zonal ammonia injection optimization method. It provides a certain reference value for the optimized management of the denitrification system of coal-fired units in the future.

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“…The number of meshes is 4.7 million, where the result of surface meshing is shown in Figure 2. The k-ε dual equation model is mathematically described as follows [10] :…”

Section: Calculation Methods and Meshingmentioning

confidence: 99%