Research and analysis of characteristics of fuel from organic and industrial waste

Nurkina, Sholpan; Kinzhibekova, A. K.; Prikhod'ko, É. V.

doi:10.21303/2461-4262.2022.002357

Cited by 2 publications

(1 citation statement)

References 15 publications

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“…Another important characteristic of a briquette is its density. Since briquettes are formed at high pressures [2], the density value affects both the structure of the layer and the combustion heat produced [3].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Efficiency of Burning Briquettes from Agricultural and Industrial Residues in a Layer

Nikiforov,

Prikhodko,

Kinzhibekova

et al. 2024

Energies

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The combustion of briquettes made from organic and industrial residues in small boilers requires researchers to consider the characteristics of this type of fuel and methods of its combustion. For the efficient combustion of fuel briquettes, a layered combustion method with the ability to regulate the supply of combustion air is better suited. The purpose of this research is to study the thermal technical conditions of briquetted fuel combustion. In order to carry this out, a stand was created, which made it possible to determine the combustion efficiency of this type of fuel. Two types of briquettes were studied: one with 30% sunflower husks and 70% leaves, and one with and 70% sunflower husks and 30% coke breeze. The combustion results of the briquettes show that heat loss from chemical under-burning was no more than 6.25%. To determine the temperature distribution in the fuel layer, a model of unsteady heat transfer in a fixed layer was used. A calculation of the temperature fields in the layer of burned fuel briquettes was carried out, which showed that the most favorable conditions for burning briquettes were created with a layer about 15–20 cm thick for both burned briquette options. The temperature was in the range of 450–750 °C, which on the one hand corresponds to experimental data and on the other hand provides a combustion regime that occurs with a relatively low loss to the environment. This installation and mathematical model will help future studies based on the processes of other types of organic waste combustion with a grate system.

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Section: Introductionmentioning

confidence: 99%

Analysis of the Efficiency of Burning Briquettes from Agricultural and Industrial Residues in a Layer

Nikiforov,

Prikhodko,

Kinzhibekova

et al. 2024

Energies

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Analysis of the Characteristics of Bio-Coal Briquettes from Agricultural and Coal Industry Waste

et al. 2023

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One of the options for reducing harmful emissions in the production of heat energy is the use of biomass, including in combination with industrial waste (for instance, coal and coke dust). Recent studies demonstrate that a mix of biomass and coal makes it possible to obtain a bio-coal briquette with better characteristics, which is a motivating factor in the search for alternative sources of heat energy from local agricultural waste. The aim of this research is to study the properties of bio-coal briquettes from biomass (sunflower husks and leaves) and industrial waste (coal and coke dust). The raw material was grinded and used for the production of bio-coal briquettes of 20%, 30%, 40%, 50%, 60%, and 70% of biomass. The biomass was grinded to the size of no more than 2 mm for the fine fraction and no more than 6 mm for the coarse fraction. The briquettes were made mechanically using a hydraulic press with a compression pressure of 25 MPa without the use of any binder. The characteristics of the investigated bio-coal briquettes, such as density, strength, moisture content, ash content, volatile yield, calorific value, ignition time, burning duration, and burning rate, have good enough values. The fine fraction briquettes compared to the coarse fraction briquettes have a longer burning time (about threefold longer) and a lower burning rate. For all briquettes, an increase in the composition of coal dust results in a rise in the burning time, whereas the burning rate falls. The best in terms of strength, calorific value and combustion parameters are the following briquettes: 70% sunflower husk and 30% coal dust from the Karazhyra deposit; 60% sunflower husk and 40% coal dust from the Shubarkul deposit; briquettes from 70% sunflower husk and 30% coke dust; briquettes from 80% leaves and 20% coal dust from the Karazhyra deposit; and briquettes from 70% leaves and 30% coal dust from the Shubarkul deposit. The selected briquettes are suitable as an alternative source of fuel.

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Research and analysis of characteristics of fuel from organic and industrial waste

Cited by 2 publications

References 15 publications

Analysis of the Efficiency of Burning Briquettes from Agricultural and Industrial Residues in a Layer

Analysis of the Efficiency of Burning Briquettes from Agricultural and Industrial Residues in a Layer

Analysis of the Characteristics of Bio-Coal Briquettes from Agricultural and Coal Industry Waste

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