FERNANDES, D. B.; http://lattes.cnpq.br/8413934228676364; FERNANDES, David Braga.
Resumen:
Sulfur dioxide (SO2) in the atmosphere has several harmful effects on human health,
vegetation and the environment. Sulfur dioxide emission is mainly
combustion of fossil fuels such as coal and
sulfur-containing petroleum derivatives in both automobiles and installations
industrial Steam and electricity generation boilers represent significant
S02 emissions in the industrial environment. Changing fuels of these
Equipment consists of one of the main pollution control methods. The evaluation
of the effects of this method on the dispersion and concentration of SO2 at ground level through
Computer simulations provide less time, lower cost and greater security in
decisions related to changes in the energy matrix of equipment. The purpose of this
work and use computational fluid dynamics to simulate the atmospheric dispersion of
SO2 emissions from the three Babcock & Wilcox boilers by assessing the concentrations of
pollutant level in order to guide technical studies aimed at changes in the matrix
fossil energy of the equipment. ANSYS Computational Fluid Dynamics Software
Workbench - FluidFlow (CFX) was used for the development of the geometry of the
domain, computational mesh, boundary conditions, computational solution and
evaluation of results from six scenarios. In all simulated scenarios the convergence
occurred after the process reached the residue target of le "4 for Moment, Mass,
Heat Transfer, Turbulence and Mass Fraction of S02 in the domain. The results
Scenario 1 (default) approached the Calpuff model developed in the
Environmental Impact of Project Expansion. Simulation Results
indicated that under neutral atmosphere conditions the complete atmospheric dispersion of
SO2 plume from the boilers achieved optimal ground-level performance at
from the partial or total replacement of fuel capable of reducing sulfur by 25% in the
emissions. Thus, the use of eucalyptus or babacu biomass, materials
abundant in the region, in addition to the use of mineral coal with a lower concentration of
sulfur, presents itself as an alternative that should have its technical and economic viability
studied.