Plasma thermochemical preparation for combustion of pulverized coal

Messerle, A. V.; Мессерле, В. Е.; Устименко, А. Б.

doi:10.1134/s0018151x17030142

Cited by 14 publications

(8 citation statements)

References 14 publications

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“…Particle velocity is considered as equal to gas velocity that is determined by continuity equation. Gas composition in every section is considered to be at chemical equilibrium under fixed fuel conversion degree [23,28]. Numerical solution of a whole equation system is obtained as follows: the kinetics of chemical transformations is calculated using a system of ordinary differential equations (2-4) to change the particle mass for a given temperature distribution; then the stationary problem of heat transfer (1) is solved taking into account heat sources.…”

Section: Mathematical Modelmentioning

confidence: 99%

Mathematical modelling of the oxyfuel gasification of pulverized coal fuel

Donskoy

2020

E3S Web Conf.

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In this work, we studied the efficiency of the coal gasification process under oxyfuel conditions. Using mathematical modelling one-dimensional stationary statement, the optimal parameters of coal processing were determined, air and oxyfuel conditions are compared. The calculated dependences of the characteristics of the gasification process on the stoichiometric ratio at different initial temperatures are constructed. The optimal values of oxygen stoichiometric ratio and the maximum values of cold gas efficiency in the selected range of parameters are determined. The contribution of the thermophysical and reactive properties of the gasification agent to the change in the cold gas efficiency is estimated.

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Section: Mathematical Modelmentioning

confidence: 99%

Mathematical modelling of the oxyfuel gasification of pulverized coal fuel

Donskoy

2020

E3S Web Conf.

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“…Daar word ook wêreldwyd ondersoek ingestel na die herwinning van energie en nuttige produkte deur vergassing van koolstofhoudende materiaal soos munisipale-en plastiekafval, uitskotmotorbande en biomassa. Plasmas kan ook ingespan word by die voorbehandeling en ontsteking van steenkool in kragstasies (Blackburn, 1980), , (Messerle, 2014), (Messerle, 2017,).…”

Section: Nywerheidstoepassings Van Termie Se Plasmasunclassified

Plasmategnologie : 'n kort oorsig oor die ontstaan, teorie en 'n aantal toepassings daarvan

Jansen

Walt

Crouse

2020

Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie

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Daar word na plasmas as die vierde toestand van materie verwys. In die natuur manifesteer plasmas as korona-ontladings, weerlig, aurora borealis en in sterre soos die son. Plasmas kan ook opgewek word met elektriese boogontladings, radiofrekwensie-induksie, mikrogolwe, diëlektriese ontladings en lasers. Die ontstaansgeskiedenis van mensgemaakte plasmas en meegaande elektrotegnologie sedert die middel van die 17de eeu word in hierdie oorsigartikel opgesom. Die plasmatoestand word bespreek aan die hand van ’n algemene beskrywing en die fisiese eienskappe van ’n paar algemeen-gebruikte plasmagasse word ingesluit. ’n Aantal verskillende tipes plasmas en toepassings word kortliks bespreek, met die klem op termiese plasmas. Suid-Afrikaanse navorsing en ontwikkeling op die gebied van plasmategnologie, hoofsaaklik by Mintek, internasionaal bekend op die gebied van pirometallurgie, en Necsa, word bespreek. `n Kort oorsig van die Suid-Afrikaanse pirometallurgiese bedryf word ingesluit. Spesiale fokus word geplaas op termiese afvalprosessering en plasmagesteunde vergassing word met konvensionele prosesse vergelyk. Plasmagesteunde vergassing vir energieproduksie word in meer besonderhede bespreek. Laastens word ’n blik gegee op die huidige internasionale plasmategnologieverskaffers.

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“…The release of combustible volatiles is carried out in a special device (8), in which, without access to oxygen, the coal layer is heated. As a carrier of the initial thermal energy necessary for heating coal, steam can be used, in the presence of a working boiler; electricity or other medium of thermal energy.…”

Section: Research Descriptionmentioning

confidence: 99%

“…In terms of coal reserves, Kazakhstan is second only to China, the United States, Russia, Australia, South Africa and Ukraine. The state balance of Kazakhstan takes into account the reserves of 49 deposits amounting to 33.6 billion tons, including 21.5 billion tons of coal, and 12.1 billion tons of brown coal [8]. Most of the coal deposits are concentrated in the Central (Karaganda and Ekibastuz coal basins, as well as the Shubarkol field) and Northern Kazakhstan (Turgai coal basin), in southern Kazakhstan -Lenger and Nizh-Ili coals [5].…”

Section: Introductionmentioning

confidence: 99%

Application of Coal Thermal Treatment Technology for Oil-Free Firing of Boilers

Aliyarov

Mergalimova

Zhalmagambetova

2018

Latvian Journal of Physics and Technical Sciences

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The theoretical and practical introduction of this kind of firing boiler units in coal thermal power plants is considered in the article. The results of an experimental study of three types of coals are presented in order to obtain the required gaseous fuel. The aim of the study is to develop a new, economically and ecologically more acceptable method for firing boilers at thermal power plants, which is able to exclude the use of expensive and inconvenient fuel oil. The tasks of the experiment are to develop a technological scheme of kindling of boilers at thermal power plants, using as a type of ignition fuel volatile combustible substances released during the heating of coal, and to investigate three types of coal for the suitability of obtaining gaseous fuels, in sufficient volume and with the required heat of combustion. The research methods include the analysis of technical and scientific-methodological literature on the problem of the present study, the study of the experience of scientists of other countries, the full-scale experiment on the production of volatile combustible substances. During the full-scale experiment, the coal of 3 fields of Kazakhstan has been studied: Shubarkul, Maikuben and Saryadyr. The analysis has been performed and the choice of the most convenient technology for boiler kindling and maintenance of steady burning of the torch has been made according to the proposed method, as well as the corresponding technological scheme has been developed. As a result of the experiment, it can be stated that from coal in the process of its heating (without access to oxygen), it is possible to obtain a sufficient amount of combustible volatile substances. The released gaseous fuel has the necessary parameters and is quite capable of replacing an expensive fuel oil. The resulting gaseous fuel is quite convenient to use and environmentally cleaner. The piloting scheme developed as a result of the experiment can be introduced in pulverized-coal thermal power plants, as a result of which they become single-fuel.

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Plasma thermochemical preparation for combustion of pulverized coal

Cited by 14 publications

References 14 publications

Mathematical modelling of the oxyfuel gasification of pulverized coal fuel

Mathematical modelling of the oxyfuel gasification of pulverized coal fuel

Plasmategnologie : 'n kort oorsig oor die ontstaan, teorie en 'n aantal toepassings daarvan

Application of Coal Thermal Treatment Technology for Oil-Free Firing of Boilers

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