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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
SJR: 0.137 SNIP: 0.341 CiteScore™: 0.43

ISSN Imprimir: 1093-3611
ISSN On-line: 1940-4360

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.2012004400
pages 1-13

PLASMA TECHNOLOGY FOR VITRIFICATION OF ASH FROM POWER PLANTS

Vasili Sauchyn
A.V.Luikov Heat and Mass Transfer Institute of the National Academy of Sciences of Belarus
I. Khvedchyn
A. Luikov Heat and Mass Transfer Institute, Arc Plasma Department, P. Brovka str. 15, 220072, Minsk, Belarus
Sulaiman I. Al-Mayman
Energy Research Institute (ERI), King Abdulaziz City for Science and Technology (KACST), P.O. Box 6086, Riyadh 11442, Saudi Arabia
Naif M. Al-Abbadi
Energy Research Institute (ERI), King Abdulaziz City for Science and Technology (KACST), P.O. Box 6086, Riyadh 11442, Saudi Arabia
M. Al-Juhani
Energy Research Institute, King Abdulaziz City for Science and Technology, P.O. Box 6086, Riyadh, Saudi Arabia
K. Al-Enazi
Energy Research Institute, King Abdulaziz City for Science and Technology, P.O. Box 6086, Riyadh, Saudi Arabia

RESUMO

As a result of burning fossil fuels a great amount of toxic ash is produced. In most cases the ash is polluted with heavy metals and sometimes radionuclides. The analyses of ash from a power plant were made by Scanning Electron Microscope (SEM) and Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES Analysis). The results of the investigation show that ash is superfine powder polluted with heavy metals. Vitrification is one of the most promising ways of environmental protection from pollution with highly toxic dispersed materials. We propose the arc plasma technology for the vitrification of toxic ash. An experimental plasma set was designed and manufactured. The heart of the proposed set is a transferred arc plasma torch and plasma reactor where ash is melted and vitrified under the impact of high temperature. As a result, we receive solid chemically resistant material with a low rate of leaching. The material is environmentally friendly and can be stored for a long time or used in construction as a filling compound.