KAGAKU KOGAKU RONBUNSHU
Online ISSN : 1349-9203
Print ISSN : 0386-216X
ISSN-L : 0386-216X
Behavior of Flue Gas and Hydrochloric Acid Removal with Combustion Test of RDF in Bubbling Fluidized Bed
GUILIN PIAOMOTOHIRO KONDOHMASATAKA YAMAGUCHIYOSHINORI ITAYARYOHEI YAMAZAKISHIGEKATSU MORI
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2000 Volume 26 Issue 4 Pages 609-613

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Abstract

To explain the combustion behavior of RDF in a fluidized bed, three kinds of model RDF, two kinds of RDF from industrial solid waste (ISW) and two kinds of RDF from municipal solid waste (MSW) were burnt in a bubbling-type fluidized bed combustor. The experimental data of CO, NOx and HCl concentration in the flue gas from the combustor are presented. It is found that much higher CO concentration in the flue gas occurs in the combustion of low density and weak mechanical strength RDF than that of other RDFs, and it can be controlled by secondary air injection. NOx concentration and conversion of fuel-N to NOx from the combustion of larger RDF which contained more metal compounds is far higher than other RDFs. Conversion of fuel-N to NOx is increased with increasing Ca/ (S+0.5Cl) molar ratio because CaO promotes catalytically production of NO. HCl concentration in the flue gas from the combustor decreases with increasing Ca/ (S+0.5Cl) molar ratio. De-hydrochlorination by CaO decreases with increasing combustion temperature.

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© by THE SOCIETY OF CHEMICAL ENGINEERS, JAPAN
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