Improving Efficiency of Boiler in Case of Coal Hydrotransport

Осинцев, К. В.; Дудкин, М. М.; Prikhodko, I. S.

doi:10.1007/978-3-030-22063-1_146

Cited by 2 publications

(6 citation statements)

References 24 publications

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“…The results of studies performed on a pilot plant for the preparation and combustion of Karakechi brown coal, that was created in relation to the boiler TP-35 [63,64], in general, confirmed the nature of temperature changes, burnout of volatiles and coke residue, as well as the general dependence of the process on the degree ballasting with moisture and fractional composition of the initial fuel. At the same time, dust combustion is characterized by a shorter section lf from the burner cutoff to the zone of maximum temperatures T f , which are a higher level of temperatures themselves and therefore the degree of burnout.…”

Section: Mathematical Models Of Transportation Of Coal-water Suspensionsmentioning

confidence: 62%

“…Verification of the same method of calculation for dry dust of Karakechi brown coal at k comb = 1.34 gave a discrepancy, when compared with the experiment, of 5...7%. At the same time, the distributions of dimensionless temperatures and the degree of burnup revealed under the conditions of the stand [64] are typical for the combustion of dust and CWS in the TP-35 boiler. Despite the lower values of the kinetic constants k comb for agglomerates when compared to dust, the burnout time of CWSs increases significantly due to a decrease in the flame temperature and an increase in the size of agglomerates compared to the size of dust particles.…”

Section: Mathematical Models Of Transportation Of Coal-water Suspensionsmentioning

confidence: 79%

“…From the current practice of preparing, transporting, and burning artificially watered solid fuels, it is possible to divide these into classes of low-and high-reactivity mixtures [63,64].…”

Section: Mathematical Models Of Transportation Of Coal-water Suspensionsmentioning

confidence: 99%

“…The authors of the article themselves studied the properties of Karakechi coal, its mixture with water [63,64], and also used data on coals and mixtures previously studied by other authors [69,74]. In paper [68], as well as studies [32,33], experimental and analytical data were obtained.…”

Section: Mathematical Models Of Transportation Of Coal-water Suspensionsmentioning

confidence: 99%

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A Review of Methods, and Analytical and Experimental Studies on the Use of Coal–Water Suspensions

2022

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Research in the field of building mathematical models for combustion processes has been ongoing ever since the chemical reactions of combustion were first discovered. The authors of this review have systematized mathematical models of coal–water suspension (CWS) combustion processes, the sequence of analytical and experimental studies, and have also shown the global genesis of the CWS use. In addition, this review touches upon a topic that is inextricably linked with the combustion of CWS, namely their transportation from the place of coal mining to their place of thermal utilization. For developing countries, their own energy independence is in the foreground, as it is the basis for their economic independence and also a means for other sectors of their economy to be protected from the impact of market changes in fuel prices in the future spot world market. The authors of this review explored the possibility of using Kyrgyz brown coal and transporting it through a coal pipeline from a mountainous area to an industrial site for thermal utilization in specialized steam boiler units. As the economic analysis showed, for the conditions of the Republic of Kyrgyzstan, the use of CWS and coal pipelines with rising prices for natural gas is economically justified. The recommendations of the authors are used in scientific reports and methodological recommendations for the energy and mining sectors of the Republic of Kyrgyzstan, how the recommendations can also be applied to similar conditions in the highlands of Russia, China, and India.

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Section: Mathematical Models Of Transportation Of Coal-water Suspensionsmentioning

confidence: 62%

Section: Mathematical Models Of Transportation Of Coal-water Suspensionsmentioning

confidence: 79%

Section: Mathematical Models Of Transportation Of Coal-water Suspensionsmentioning

confidence: 99%

Section: Mathematical Models Of Transportation Of Coal-water Suspensionsmentioning

confidence: 99%

See 2 more Smart Citations

A Review of Methods, and Analytical and Experimental Studies on the Use of Coal–Water Suspensions

2022

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“…The existing calculated dependencies of the main parameters of hydrotransport are based on the law of turbulent transfer of the solid phase with the flow of liquid, and the effectiveness of the process has been considered by many scientists in connection with the effect on the turbulent properties of solid particles [2][3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Study of the motion of modified solid particles in hydratransport systems

Chorshanbiev,

Ibadullaev,

Babaev

et al. 2023

E3S Web of Conf.

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The article examines the movement of solid particles, the hydraulic calculations of pipes in the process of movement, the classification of reducing the impact of solid particles on hydrotransport systems. The effect of solid particle magnification on flow rate, pressure loss, speed reduction as a result of the effect of internal friction forces of solid particles, friction in the flow of solid particle hydroarations, pressure loss as a result of the impact of Resistance Forces, internal corrosion process observed in the pipe, increased energy consumption were analyzed using the example of hydrotransport systems Recommendations have been made to solve the problems of speed reduction and pressure loss due to the movement of solid particles in the hydroaration flow through the modification method. The prior and subsequent movement of solid particles in a pipe modification is shown through comparison graphs. Information about the gossipol Tar selected as a modifier is provided.

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Improving Efficiency of Boiler in Case of Coal Hydrotransport

Cited by 2 publications

References 24 publications

A Review of Methods, and Analytical and Experimental Studies on the Use of Coal–Water Suspensions

A Review of Methods, and Analytical and Experimental Studies on the Use of Coal–Water Suspensions

Study of the motion of modified solid particles in hydratransport systems

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