Study of toxic metals during combustion of RDF in a fluidized bed pilot

被引：5

作者：

Crujeira, T ^{[1
]}

Lopes, H ^{[1
]}

Abelha, P ^{[1
]}

Sargaço, C ^{[1
]}

Gonçalves, R ^{[1
]}

Freire, M ^{[1
]}

Cabrita, I ^{[1
]}

Gulyurtlu, I ^{[1
]}

机构：

[1] DEECA, INETI, P-1649038 Lisbon, Portugal

来源：

ENVIRONMENTAL ENGINEERING SCIENCE | 2005年 / 22卷 / 02期

关键词：

heavy metals; combustion; refuse-derived fuel (RDF);

D O I：

10.1089/ees.2005.22.241

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The study of the behavior of heavy metals during combustion of refuse-derived fuel (RDF) in a pilot fluidized bed was performed. The results of co-combustion were compared with coal combustion and RDF monocombustion. The amounts of heavy metals retained by the ash were different during co-firing in comparison with monocombustion due to the mechanisms leading to different partitioning of ash. It was verified that heavy metal emissions increased with introduction of RDF, but remained below regulated levels, with the exception of chromium (Cr) and nickel (Ni). For RDF monocombustion the emissions were, however, more severe, especially for cadmium (Cd), lead (Pb), and copper (Cu). This seems to be related not only to larger input amounts, but also to higher volatilisation during monocombustion caused by the presence of higher chlorine and lower sulphur contents in the RDF. Hence, as far as heavy metals are concerned, the utilization of RDF as a co-firing combustible for coal seems to be more environmental favorable than when RDF is fired alone.

引用

页码：241 / 250

页数：10

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[2]

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[3]

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[4]

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