Investigation of wear pattern in a complex coal pulveriser using CFD modelling

Vuthaluru, Rupa; Krüger, Oliver; Abhishek, M.; Pareek, Vishnu; Vuthaluru, Hari

doi:10.1016/j.fuproc.2005.10.011

Cited by 14 publications

(4 citation statements)

References 6 publications

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“…Validation was done by comparing the actual flow pattern formed on the pulverizer wall with the velocity vector of the initial simulation results in the wall area close to the throat ring. This pattern was observed when the mill stopped during operational standby or maintenance conditions because the pulverizer was one of the most complicated pieces of equipment in a power plant which was difficult to make observations and measurements when operating conditions [8].…”

Section: Model Validationmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Diffusers Installation in Inlet Primary Air Coal Pulverizer on Airﬂow Characteristic and Wear Concentration using CFD Modeling

Galih

Dwiyantoro²

2022

JMES Int. Journal of Mech. Eng. Sc.

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This study investigates the effect of installing several diffuser models in the supercritical power plant pulverizer inlet ducting on airflow characteristics and wear concentration. The pulverizer internal check results show that one area of the wall was wearing abnormally or faster than usual. This condition affects the availability of the pulverizer. Previous research has produced a method to overcome this phenomenon, but the design model was still unsuitable for the actual operational condition. This study simulated air motion in a pulverizer with six different diffuser models. The two variations in the number of blades were two and three blades, combined with three angle variations, which were 30 • , 45 • , and 50 • . Viscous k-omega SST was used in this CFD modeling to simulate airflow from the primary inlet to the area above the throat ring. The results show the contours of the velocity of the air and the velocity vector on the pulverizer. From all the variations in this study, the 45 • angle model with three blades and the 50 • angle model with three blades can help overcome the concentration of wear on the pulverizer wall.

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Section: Model Validationmentioning

confidence: 99%

“…A year later, Vuthaluru et al [8] conducted pulverizer modeling to determine the wear pattern due to variations in primary air velocity. As a result, the area with the highest velocity was in the throat area opposite the air inlet duct.…”

Section: Introductionmentioning

confidence: 99%

Effect of Diffusers Installation in Inlet Primary Air Coal Pulverizer on Airﬂow Characteristic and Wear Concentration using CFD Modeling

Galih

Dwiyantoro²

2022

JMES Int. Journal of Mech. Eng. Sc.

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“…Under normal operating conditions, the heat in the combustion zone will cause ignition of the all incoming fuel. To achieve better understanding of distribution of the coal and gas mixture through complicated mill-ducts, various experimental and numerical research have been conducted (see, for example, Shah et al [8], Dodds et al [9], Vuthaluru et al [10,11] and Arakaki et al [12]). Previous papers have shown that CFD analysis was used for analysing flow profiles and for designs or redesigns of mill-ducts with aim to improve the overall performance.…”

Section: Introductionmentioning

confidence: 99%

Numerical prediction of erosion zones in the aero-mixture channel

Mesic¹,

Delic²,

Ganibegovic³

et al. 2018

ces

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Velocity of solid particles in aero-mixture channel has been recognized as the most significant factor that has an influence on erosion. In this paper, numerical study of particle erosion in aero-mixture channel was conducted due to the main parameters that have the greatest impact. Pulverised coal boiler OB650 is supplied with an aero-mixture (pulverised coal and flue gases) through distribution channels, 2358 Amel Mešić et al. where the distribution of the same aero-mixture is regulated with a tilt of regulation dumper. These types of regulation cause the problems that have greater impact on the internal structure of the same distribution channels. It is concluded that the best way to determinate that problems is with CFD tool. In this case CFD tool was used to simulate the flow field inside the channel, using Euler-Lagrangian mathematical approach.

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“…Distribution of coal and gas mixture within complicated mill-ducts has been investigated experimentally and numerically to better understand the flow patterns (see, for example, Shah et al [6], Dodds et al [7], Vuthaluru et al [8,9] and Arakaki et al [10]). CFD analysis is used to analyze flow profiles and design/redesign ducts to improve overall performance.…”

Section: Introductionmentioning

confidence: 99%