Mathematical modeling of the thermochemical processes of sequestration of SOx when burning the particles of the coal and wood mixture

Кузнецов, Г. В.; Gutareva, N.Y.; Nigay, N.A.

doi:10.1016/j.renene.2021.10.091

Cited by 10 publications

(4 citation statements)

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“…These concerns encompass the availability of biomass continuously, the space needed for storage, and the economic challenges involved with transportation and distribution (Zahraee et al, 2022). One notable benefit associated with the co-burning of biomass and coal in comparison to the exclusive combustion of coal is the potential reduction in emissions of carbon monoxide (CO), nitrogen oxides (NOx), and sulfides, while simultaneously maintaining production efficiency (Syrodoy et al, 2022).…”

Section: Direct Use Of Forest Biomassmentioning

confidence: 99%

A concise review of technologies for converting forest biomass to bioenergy

Raihan

2023

JTIE

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The use of biomass is vital in reducing the negative effects of rising fossil fuel consumption. Given its quantity and diversity, forest biomass has garnered a lot of interest among the many kinds of biomass. This study evaluates the various strategies for transforming woody waste into usable biofuels. Carbon dioxide emissions from traditional energy generation systems could be mitigated through the direct utilization of forest biomass. Low energy conversion rates, as well as soot emissions and residues, are some of the problems that come up when directly using forest biomass. The sustainability of direct energy generation from forest biomass is also seriously threatened by the lack of constant access to biomass. Co-combustion with coal and pelletizing biomass is two solutions proposed for this issue. Co-combustion of forest biomass with coal has the potential to lower the process's emissions of carbon monoxide, nitrogen oxides, and sulfides. This article reviews and discusses the biochemical and thermochemical mechanisms that can transform forest biomass into a variety of liquid and gaseous biofuels. Future research using cutting-edge sustainability assessment tools like life cycle assessment, exergy, etc. should investigate the sustainability of forest biomass conversion processes to bioenergy further.

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Section: Direct Use Of Forest Biomassmentioning

confidence: 99%

A concise review of technologies for converting forest biomass to bioenergy

Raihan

2023

JTIE

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“…To solve this problem, an algorithm based on the time step accumulation method was developed. 50 When solving the system of difference equations, we used the iteration method with the relaxation method at each iteration. In this case, the phase transition front velocity (V F ), the mass evaporation rate (W eva ), and the evaporation front surface temperature [T(R eva , t)] are explicitly related.…”

Section: Formulation Of the Problemmentioning

confidence: 99%

“…It should be noted that the numerical simulation of the processes of intense phase transformations (in particular, evaporation) is one of the most difficult in mathematical physics. To solve this problem, an algorithm based on the time step accumulation method was developed . When solving the system of difference equations, we used the iteration method with the relaxation method at each iteration.…”

Section: Mathematical Modelmentioning

confidence: 99%

“…To substantiate the adequacy of the mathematical model formulated herein for the process of evaporation of a liquid drop from a heated surface, an analysis of the stability and convergence of the solution was carried out. For this purpose, the energy balance was checked by analogy with ref . Figure shows the dependences of the heat balance discrepancy (Δ) on time with varying grid parameters.…”

Section: Mathematical Modelmentioning

confidence: 99%

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Mathematical Modeling of the Evaporation of a Water Drop from a Heated Surface

2023

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This paper presents the results of mathematical modeling of the evaporation of a single water drop from the surface of a copper substrate using a new model, which does not require special experiments to close the system of equations and the corresponding boundary conditions with empirical constants. On the basis of the results of mathematical modeling, it was found that convective currents that occur in a small water drop (≤1 mm in diameter) do not significantly affect the characteristics or conditions of heat and mass transfer processes occurring in a liquid drop heated on a copper substrate. The results of numerical simulation showed that during the initial period of droplet heating, the latter undergoes a rapid transformation of the flow field. Five seconds after the beginning of the thermal action, a quasi-stationary regime of flows in the drop sets in. The model is tested on known experimental data. The theoretical analysis of temperatures at the characteristic points of a water drop and the surface on which the drop is located is carried out in ranges of thermal loads quite typical for practice, conditions for transferring heat and water vapor to the environment. According to the results of mathematical modeling, the possibility of using the developed model in the analysis of the state of cooling of surfaces heated to high temperatures, in cases typically used, is substantiated.

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