Erosive Properties of Pulverized Coal Fly Ash (Review)

Alekhnovich, A. N.

doi:10.1007/s10749-021-01372-6

Cited by 2 publications

(2 citation statements)

References 7 publications

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“…The coal consumed is for the most part lignites, most notably its Kansko-Achinsky, Primorsky, Kharanorsky, and Azeisky varieties. For the purposes of our calculations, their qualitative characteristics were assumed as per the data found in reference books [7][8][9].…”

Section: Fig 2 Ingredient Composition Of Air Pollutant Emissions From...mentioning

confidence: 99%

Environmental Considerations Related to Generation Facilities in the Regions of the Asian Part of Russia

Maysyuk

2023

Energy Systems Research

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The features unique to the operation of energy facilities in the Asian part of Russia influence environmental agenda setting in these regions. The Asian regions account for a large share of Russia's mix of air pollutant emissions and production of coal ash, with boiler plants responsible for a significant part of their amounts. Particulate matter and sulfur oxides dominate the ingredient composition of pollutant emissions, unlike in European Russia. From an environmental point of view, what makes regions of the Asian part of Russia stand apart in a rather egregious way is the large proportion of cities with high levels of air pollution. Of the 37 such cities in the country, 27 are located in Siberia and the Russian Far East. The regions of the Asian part of Russia, due to the predominance of coal in their fuel balances, are characterized by a high share of CO2 emissions from generation facilities. Specific carbon dioxide emissions in the Asian regions are 1.5 times higher than in the European part of the Russian Federation. Given that in the near future it is unlikely for coal to be completely eliminated from fuel balances of the Asian regions, in order to decarbonize Russia's energy sector, a number of strategies of low-carbon development should be developed for these regions.

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Section: Fig 2 Ingredient Composition Of Air Pollutant Emissions From...mentioning

confidence: 99%

Environmental Considerations Related to Generation Facilities in the Regions of the Asian Part of Russia

Maysyuk

2023

Energy Systems Research

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“…Alekhnovich et al [23] presented the erosive properties of coal dust and fly ash produced from conventional coal dust. The author states that dust consists mainly of amorphous spheres of high hardness, and its erosive properties are determined by almost all particles except the smallest.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of the Erosion Process and Transport of Pulverized Coal–Air Mixture in the Mill-Duct System

Hernik

2022

Energies

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One of the main causes of damage to the elements of coal-fired boilers installations, leading to breakdowns and, consequently, a shutdown of the block, are erosive processes. Unfortunately, there is not much research conducted on dust erosion of the dust ducts supplying the air–dust mixture to the burners. The problem of erosion of the dust ducts supplying the pulverized coal–air mixture to the burners was presented in this paper. This study was performed for the preliminary feasibility design. The destruction of the material of the dust ducts results in a failure due to erosion, resulting in the mill being shut down from an operation, which in turn may lead to the shutdown of the power plant unit. Therefore, it is important to identify places exposed to pulverized coal erosion. In order to perform calculations, numerical modeling in the commercial program Ansys.Fluent (Ansys Fluent, Computational Fluid Dynamics, Ansys Inc., Pittsburgh, PA, USA) was used. The parameters obtained as a result of laboratory tests were used in the erosion model. The places where erosion is expected are indicated. The highest erosive wear occurred for the M3 mill dust ducts for the case coal 1 and amounted to 45.6 mm/5200 h. On the other hand, the lowest erosive wear occurred for the M2 mill dust ducts powered by coal 3 and amounted to 20.9 mm/5200 h. The identification of places where erosion is expected can be used to protect these places from erosion adequately. Nevertheless, a dispersion threshold should also be placed where there is a high concentration of pulverized coal contributing to increased erosion. The numerical calculations provided information on the velocity of the medium and the behavior of the dust in the dust duct. The numerical calculations also provided information on where dust lacing has occurred. It was shown that coal dust particles with a diameter greater than 100 µm largely erode the dust duct’s wall. A model is presented for the calculation of the erosion process to be used in the dust ducts of the power plant.

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Erosive Properties of Pulverized Coal Fly Ash (Review)

Cited by 2 publications

References 7 publications

Environmental Considerations Related to Generation Facilities in the Regions of the Asian Part of Russia

Environmental Considerations Related to Generation Facilities in the Regions of the Asian Part of Russia

Numerical Study of the Erosion Process and Transport of Pulverized Coal–Air Mixture in the Mill-Duct System

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