Oxygen-enhanced Combustion In
Waste Incineration:
Economic And Environmental Considerations
Author(s)
N. Verdone, G. Liuzzo, P. De Filippis & F. Mazzoni
Abstract
In this paper the benefits attainable by replacing atmospheric air with oxygen
enriched air in waste incineration processes are examined. Technical, economical
and environmental aspects are all discussed on the basis of the results of process
simulations performed by using the PRO/II-Provision v. 7.01 flowsheeting
simulator (SimSci-Esscor). The simulations were carried out modelling an
incineration plant equipped with a heat recovery section and a flue gas
recirculation into the combustion chamber. The study is parameterized varying
the thermal input to the plant (waste flow rate), the temperature set in the
combustion chamber, the grade of enrichment in oxygen of the oxidizer and the
price of the generated electric power. Results show that higher heat recovery
efficiencies, lower fixed costs and decreased emissions of atmospheric pollutants
are obtained when enriched air is utilized.
Keywords: waste incineration, oxygen-enhanced combustion, waste-to-energy.
1 Introduction
The use of oxygen enriched air has become an accepted practice in the field of
chemical oxidation and combustion processes, typically in the steel, iron, glass,
cement, pulp and paper, and petrochemical industries. The main benefits in the
use of oxygen enriched air as an oxidizer have been described by several authors
and can be summarized in the following points: (1) increase of flame temperature
and stability, enhancing heat transfer efficiency, (2) increase in the combustion
reaction rate due to the higher oxygen partial pressure, (3) prevention of soot
formation, (4) reduction of fuel flow rate and flue gas generation.
Keywords
waste incineration, oxygen-enhanced combustion, waste-to-energy.
Related Book
Other papers in this volume
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