scholarly journals Análisis de la Correlación entre las Emisiones Gaseosas y el Desempeño Energético de Fuentes Fijas de Combustión en Ecuador

2021 ◽  
Vol 48 (1) ◽  
pp. 43-50
Author(s):  
Marcelo Cabrera ◽  
Lucía Montenegro ◽  
Jorge Guanulema
Keyword(s):  

En esta investigación, se analizó la eficiencia de combustión de veinte hornos a gas y fuel oil de refinerías alrededor del Ecuador, y treinta calderos de diferentes industrias en la ciudad de Quito, así como las emisiones de gases generadas y la rentabilidad de la inserción de precalentadores de aire para mejorar los procesos de combustión. El estudio se realizó en un período de 6 meses, obteniéndose los factores de emisión en los hornos a gas de 4,5 kg de SO2/kg de gas quemado; 22,4 de NOX/kg de gas quemado y 44,5 kg de CO/ kg de gas quemado; mientras que los factores de emisión hallados para los hornos a fuel oil fueron de 93,9 kg de SO2/kg de fuel oil; 24,9 kg de NOX/kg de fuel oil y 2,5 kg de CO/kg de fuel oil. Por otra parte, los factores típicos de emisión de los calderos fueron de 1,7 kg de SO2 /kg de diésel quemado; 1,5 kg de NOX/kg de diésel quemado y 1,0 kg de CO/kg de diésel quemado. Finalmente, la implementación de un precalentador de aire aumenta la eficiencia del caldero analizado (CD20) en un 4,1%, lo cual implicó un valor actual neto (VAN) de USD 8 325,77 y un TIR del 31 %, con lo cual se determinó la factibilidad y rentabilidad del proyecto.

Author(s):  
J.K. Lampert ◽  
G.S. Koermer ◽  
J.M. Macaoy ◽  
J.M. Chabala ◽  
R. Levi-Setti

We have used high spatial resolution imaging secondary ion mass spectrometry (SIMS) to differentiate mineralogical phases and to investigate chemical segregations in fluidized catalytic cracking (FCC) catalyst particles. The oil industry relies on heterogeneous catalysis using these catalysts to convert heavy hydrocarbon fractions into high quality gasoline and fuel oil components. Catalyst performance is strongly influenced by catalyst microstructure and composition, with different chemical reactions occurring at specific types of sites within the particle. The zeolitic portions of the particle, where the majority of the oil conversion occurs, can be clearly distinguished from the surrounding silica-alumina matrix in analytical SIMS images.The University of Chicago scanning ion microprobe (SIM) employed in this study has been described previously. For these analyses, the instrument was operated with a 40 keV, 10 pA Ga+ primary ion probe focused to a 30 nm FWHM spot. Elemental SIMS maps were obtained from 10×10 μm2 areas in times not exceeding 524s.


1997 ◽  
Vol 9 (6) ◽  
pp. 541-565 ◽  
Author(s):  
Cheryl R. Killingsworth ◽  
Francesca Alessandrini ◽  
G. G. Krishna Murthy ◽  
Paul J. Catalano ◽  
Joseph D. Paulauskis ◽  
...  

1913 ◽  
Vol 76 (1960supp) ◽  
pp. 61-64
Author(s):  
C. F. Hirshfeld
Keyword(s):  

2015 ◽  
Vol 1 (1) ◽  
pp. 5-16
Author(s):  
John Ohoiwutun

Utilization of conventional energy sources such as coal, fuel oil, natural gas and others on the one hand has a low operating cost, but on the other side of the barriers is the greater source of diminishing returns and, more importantly, the emergence of environmental pollution problems dangerous to human life. This study aims to formulate the kinematics and dynamics to determine the movement of Solar Power Mower. In this study, using solar power as an energy source to charge the battery which then runs the robot. Design and research was conducted in the Department of Mechanical Workshop Faculty of Engineering, University of Hasanuddin of Gowa. Control system used is a manual system using radio wave transmitter and receiver which in turn drive the robot in the direction intended. Experimental results showed that treatment with three variations of the speed of 6.63 m / s, 8.84 m / s and 15.89 m / sec then obtained the best results occur in grass cutting 15.89 sec and high-speed cutting grass 5 cm. Formulation of kinematics and dynamics for lawn mowers, there are 2 control input variables, x and y ̇ ̇ 3 to control the output variables x, y and θ so that there is one variable redudant. Keywords: mobile robots, lawn mower, solar power


2019 ◽  
Vol 12 (1) ◽  
pp. 22-28
Author(s):  
V. Ye. Mikhailov ◽  
S. P. Kolpakov ◽  
L. A. Khomenok ◽  
N. S. Shestakov

One of the most important issues for modern domestic power industry is the creation and further widespread introduction of solid propellant energy units for super-critical steam parameters with high efficiency (43–46%) and improved environmental parameters. This will significantly reduce the use of natural gas.At the same time, one of the major drawbacks of the operation of pulverized coal power units is the need to use a significant amount of fuel oil during start-up and shutdown of boilers to stabilize the burning of the coal torch in the variable boiler operating modes.In this regard, solid fuel TPPs need to be provided with fuel oil facilities, with all the associated problems to ensure the performance (heating of fuel oil in winter), reliability and safety. All of the above problems increase both the TPP capital construction costs, and the electricity generating cost.A practical solution to the above problems at present is the use of a plasma technology for coal torch ignition based on thermochemical preparation of fuel for combustion. The materials of the developments of JSC “NPO CKTI” on application of plasmatrons in boilers of thermal power plants at metallurgical complexes of the Russian Federation are also considered.Plasma ignition systems for solid fuels in boilers were developed by Russian specialists and were introduced at a number of coal-fi red power plants in the Russian Federation, Mongolia, North Korea, and Kazakhstan. Plasma ignition of solid fuels is widely used in China for almost 30% of power boilers.The introduction of plasma-energy technologies will improve the energy efficiency of domestic solid-fuel thermal power plants and can be widely implemented in the modernization of boilers.During the construction of new TPPs, the construction of fuel oil facilities can be abandoned altogether, which will reduce the capital costs of the construction of thermal power plants, reduce the construction footprint, and increase the TPP safety.


2020 ◽  
Vol 29 (3) ◽  
pp. 492-502
Author(s):  
A. P. Burdukov ◽  
E. B. Butakov ◽  
G. V. Chernova
Keyword(s):  

2013 ◽  
Vol 48 (1) ◽  
pp. 827-836 ◽  
Author(s):  
Anna K. Frey ◽  
Karri Saarnio ◽  
Heikki Lamberg ◽  
Fanni Mylläri ◽  
Panu Karjalainen ◽  
...  

2007 ◽  
Vol 262 (1-2) ◽  
pp. 114-118 ◽  
Author(s):  
Lina Yang ◽  
Jian Li ◽  
Xingdong Yuan ◽  
Jian Shen ◽  
Yutai Qi

Author(s):  
Laís A. Nascimento ◽  
Marilda N. Carvalho ◽  
Mohand Benachour ◽  
Valdemir A. Santos ◽  
Leonie A. Sarubbo ◽  
...  

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