New Approach Study on Dry Coal Cleaning System with Two-Stage Corona Electrostatic Processes for High-Sulfur Low-Grade Fine Coals

Corona electrostatic separation can remove inorganic materials from coal, reduce coal ash content and sulfur content and improve coal quality, reduce air pollution caused by smoke dust, SO<sub>X</sub>, and CO<sub>X</sub>. The performance of corona electrostatic separation tec...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Chengyuan Liu, Qingyue Wang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	corona electrostatic separation medium-ash high-sulfur two-stage corona separation Chemical technology TP1-1185 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/f6d56ff2fe1548818ae1ce44d03d0fc5
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:f6d56ff2fe1548818ae1ce44d03d0fc5
record_format	dspace
spelling	oai:doaj.org-article:f6d56ff2fe1548818ae1ce44d03d0fc52021-11-25T18:50:24ZNew Approach Study on Dry Coal Cleaning System with Two-Stage Corona Electrostatic Processes for High-Sulfur Low-Grade Fine Coals10.3390/pr91119152227-9717https://doaj.org/article/f6d56ff2fe1548818ae1ce44d03d0fc52021-10-01T00:00:00Zhttps://www.mdpi.com/2227-9717/9/11/1915https://doaj.org/toc/2227-9717Corona electrostatic separation can remove inorganic materials from coal, reduce coal ash content and sulfur content and improve coal quality, reduce air pollution caused by smoke dust, SO<sub>X</sub>, and CO<sub>X</sub>. The performance of corona electrostatic separation technology in cleaning a middle ash medium-ash, high-sulfur coal was experimentally investigated. The electrode voltage, drum rotational speed, and feeding speed were tested, whereas other parameters were maintained constant during the experiment. The results indicate that the performance of this technology in cleaning medium-ash, high-sulfur coal can be improved by optimizing the process parameters. The results demonstrate that corona electrostatic separation is effective for the beneficiation of this grade coal. In addition, the efficiency of coal cleaning is significantly improved by adding the second stage beneficiation to clean the middlings out from the first stage beneficiation. In this study, the first stage of beneficiation recovered 38.00% (by weight) of clean coal (ash content below 20%), and the second stage recovered 48.58% (by weight) of clean coal, improving the overall separation efficiency from 0.69 to 1.74. Furthermore, the sulfur content was reduced from 4.71% (raw coal) to 3.53% (clean coal). Our result show that corona electrostatic separation can effectively reject inorganic sulfur from raw coal, and the two-stage separate is also very helpful for coal purification.Chengyuan LiuQingyue WangMDPI AGarticlecorona electrostatic separationmedium-ashhigh-sulfurtwo-stage corona separationChemical technologyTP1-1185ChemistryQD1-999ENProcesses, Vol 9, Iss 1915, p 1915 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	corona electrostatic separation medium-ash high-sulfur two-stage corona separation Chemical technology TP1-1185 Chemistry QD1-999
spellingShingle	corona electrostatic separation medium-ash high-sulfur two-stage corona separation Chemical technology TP1-1185 Chemistry QD1-999 Chengyuan Liu Qingyue Wang New Approach Study on Dry Coal Cleaning System with Two-Stage Corona Electrostatic Processes for High-Sulfur Low-Grade Fine Coals
description	Corona electrostatic separation can remove inorganic materials from coal, reduce coal ash content and sulfur content and improve coal quality, reduce air pollution caused by smoke dust, SO<sub>X</sub>, and CO<sub>X</sub>. The performance of corona electrostatic separation technology in cleaning a middle ash medium-ash, high-sulfur coal was experimentally investigated. The electrode voltage, drum rotational speed, and feeding speed were tested, whereas other parameters were maintained constant during the experiment. The results indicate that the performance of this technology in cleaning medium-ash, high-sulfur coal can be improved by optimizing the process parameters. The results demonstrate that corona electrostatic separation is effective for the beneficiation of this grade coal. In addition, the efficiency of coal cleaning is significantly improved by adding the second stage beneficiation to clean the middlings out from the first stage beneficiation. In this study, the first stage of beneficiation recovered 38.00% (by weight) of clean coal (ash content below 20%), and the second stage recovered 48.58% (by weight) of clean coal, improving the overall separation efficiency from 0.69 to 1.74. Furthermore, the sulfur content was reduced from 4.71% (raw coal) to 3.53% (clean coal). Our result show that corona electrostatic separation can effectively reject inorganic sulfur from raw coal, and the two-stage separate is also very helpful for coal purification.
format	article
author	Chengyuan Liu Qingyue Wang
author_facet	Chengyuan Liu Qingyue Wang
author_sort	Chengyuan Liu
title	New Approach Study on Dry Coal Cleaning System with Two-Stage Corona Electrostatic Processes for High-Sulfur Low-Grade Fine Coals
title_short	New Approach Study on Dry Coal Cleaning System with Two-Stage Corona Electrostatic Processes for High-Sulfur Low-Grade Fine Coals
title_full	New Approach Study on Dry Coal Cleaning System with Two-Stage Corona Electrostatic Processes for High-Sulfur Low-Grade Fine Coals
title_fullStr	New Approach Study on Dry Coal Cleaning System with Two-Stage Corona Electrostatic Processes for High-Sulfur Low-Grade Fine Coals
title_full_unstemmed	New Approach Study on Dry Coal Cleaning System with Two-Stage Corona Electrostatic Processes for High-Sulfur Low-Grade Fine Coals
title_sort	new approach study on dry coal cleaning system with two-stage corona electrostatic processes for high-sulfur low-grade fine coals
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/f6d56ff2fe1548818ae1ce44d03d0fc5
work_keys_str_mv	AT chengyuanliu newapproachstudyondrycoalcleaningsystemwithtwostagecoronaelectrostaticprocessesforhighsulfurlowgradefinecoals AT qingyuewang newapproachstudyondrycoalcleaningsystemwithtwostagecoronaelectrostaticprocessesforhighsulfurlowgradefinecoals
_version_	1718410688565608448

New Approach Study on Dry Coal Cleaning System with Two-Stage Corona Electrostatic Processes for High-Sulfur Low-Grade Fine Coals

Ejemplares similares