Emissão de monoxido de carbono e hidrocarbonetos totais em camaras de incineração - efeito do numero de rotação e composição do combustivel

AUTOR(ES)
DATA DE PUBLICAÇÃO

1997

RESUMO

Thermal incineration has been in use for treatment and disposal of hazardous wastes. The secondary chamber plays an important role in the effective destruction of wastes and control of emission of products of incomplete combustion, with continuous analysis of CO and of unburned hydrocarbons used in real time monitoring of the incinerator pertormance. This work studied experimentallythe CO and total HC emissions in function of the swirl number, combustion chamber, tor three fuel toluene concentrations and two excess air values. Local measurements were also performed in the combustion chamber: two velocity tields, three temperature distributions and two gases concentration distribution. The residence time distribution has been evaluated through the response SO2 concentration pulse signal. An insulated horizontal combustion chamberwas designed and built, as well as a variable swirl burner, three tive holes Pitot tubes, one suction pirometer and two combustion gas sampling probes. A HC continuous analyser was adapted from a flame ionization detector chromatograf. The swirl number intluenced the CO and HC emissions, reducing them for the higher excess air condition (42%) and increasing them for the lower excess air (19%). Varying the mixing and plug ffow regions size inside the combustion chamber influenced the combustion efficiency in different ways depending on excess air and waste fuel concentration. The CO/ HC relation showed to not to vary with the swirl number under these conditions

ASSUNTO(S)

poluição incineração monoxido de carbono hidrocarbonetos combustão

ACESSO AO ARTIGO

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