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Sanchez, J.C.D.; Formoso, M.L.L.; Bristoti, A.
Sociedade Brasileira de Geoquimica, Rio de Janeiro, RJ (Brazil)1987
Sociedade Brasileira de Geoquimica, Rio de Janeiro, RJ (Brazil)1987
AbstractAbstract
[en] The present research work was carried out an industrial plant which uses a mixture of coals from Leao and Recreio mines for steam generation in a bioler with a capacity of 160t/h of steam. Coal samples from Leao, Recreio and the correspondent mixture were taken, as well as samples from the products of combustion. The present study fundamentally aims at assessing the emission of trace elements and major components of mineral matter, present in coal, in order to bring subsidies for a more efficient control over atmospheric, terrestrial and water pollution. Emissions of trace elements: As, B, Be, Cd, Cl, Co, Cr, Cu, F, Ga, Hg, Mn, Mo, Ni, Pb, S, Sn, V, Zn, Zr, and major elements: Si, Al, Ca, Mg, Ti, Fe, K and P, were calculated. Moreover, the average emission of particulate matter to the atmosphere was evaluated. In the present work, analytical procedures as X-ray spectroscopy and absorption spectroscopy and techniques used for the determination of F and Cl in Brazilian coals are cited. (author)
[pt]
O presente trabalho foi realizado numa empresa sul-rio-grandense que utiliza mistura de carvao de Leao e Recreio para geracao de vapor, em gerador com capacidade nominal de 160t/h de vapor. Foram amostrados carvao de Leao, Recreio e mistura destes, assim como seus produtos de combustao. O presente estudo propoe-se, fundamentalmente, avaliar a emissao dos elementos-tracos e maiores constituintes da materia mineral, a fim de levar subsidios para um controle mais efetivo sobre a poluicao atmosferica, aquatica e terrestre. Foram calculadas as emissoes de vinte elementos-tracos, a saber: As, B, Be, Cd, Co, Cr, F, Ga, Hg, Mn, Mo, Ni, Pb, S, Sn, V, Zn e Zr, e oito elementos maiores: Si, Al, Ca, Mg, Ti, Fe, K e P. Outros sim, foi avaliada a emissao media do material particulado a atmosfera. No presente estudo, foram citadas as metodologias analiticas tais como espectrometria de raios-X, espectrofotometria de absorcao atomica e foram adaptadas tecnicas para determinacoes de fluor e cloro em carvoes nacionais. (autor)Original Title
Alguns aspectos da emissao e volatizacao de elementos-tracos na combustao de carvao
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Source
1987; 14 p; 1. Brazilian Congress of Geochemistry; Porto Alegre, RS (Brazil); 30 Oct - 2 Nov 1987
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Miscellaneous
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Conference
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