Electrically-driven fuel oil filter for high density heavy fuel oils

1997 ◽  
Vol 34 (3) ◽  
pp. 206
Keyword(s):  
High Density ◽  
Fuel Oil ◽  
Fuel Oils ◽  
Heavy Fuel Oils

scholarly journals Relationship Between Erosion and Characteristics of Deposits in Gas Turbines Burning Heavy High Sulfur Fuel Oil

1994 ◽  
Author(s):  
Adriana Wong-Moreno ◽  
Alicia Sánchez-Villalvazo
Keyword(s):  
Gas Turbines ◽  
Fuel Oil ◽  
Clear Correlation ◽  
Inlet Temperature ◽  
Operation Conditions ◽  
Residual Fuel Oil ◽  
Fuel Oils ◽  
Severe Erosion ◽  
Heavy Fuel Oils ◽  
Physical And Chemical

Heavy, brittle and very hard deposits built on the first row vanes have caused severe erosion of all the first stage blades of a gas turbine during operation with washed and treated heavy residual fuel oil. The high sulphur (3.5–4.0 wt.%) fuel oil consumed by the turbine is also high in vanadium (280–290 ppm) and asphaltene content. In the present work the results of an investigation on the physical and chemical characteristics of erosive ash deposits as a function of operation conditions and fuel oil characteristics are presented. The structure and chemistry of deposits were studied by chemical analysis, x-ray diffraction, microanalysis and scanning electron microscopy. It was confirmed that deposit friability is enhanced by its MgSO4 content and that its hardness depends on the amount of MgO present. It was also found a clear correlation between the gas inlet temperature and the size of the ash particles deposited, and on the degree of compactness and hardness of the deposit. The role of the unburned particles, unavoidable in the combustion of heavy fuel oils, is discussed in relation to their influence on the effectiveness of the magnesium inhibitor.

Autoignition of Heavy Fuel Oil Sprays at High Pressures and Temperatures

1990 ◽  
Vol 112 (3) ◽  
pp. 324-330 ◽  
Author(s):  
R. S. G. Baert
Keyword(s):  
Combustion Chamber ◽  
Ignition Delay ◽  
High Pressures ◽  
Fuel Injection ◽  
Fuel Oil ◽  
Single Shot ◽  
Heavy Fuel Oil ◽  
Fuel Oils ◽  
Constant Volume Combustion Chamber ◽  
Heavy Fuel Oils

This paper reports on an experimental study of the autoignition behavior of several heavy fuel oils in a large constant-volume combustion chamber with single-shot injection. In the experiments the pressure and the temperature of the air in the combustion chamber before fuel injection varied between 30 and 70 bar and between 730 and 920 K. Illumination delay and pressure delay values have been correlated with these pressures and temperatures. It is shown that for all but one of the fuels examined, ignition delay ranking changes little with the choice of ignition delay definition, but more with the pressure and temperature conditions in the combustion chamber. The usefulness of the Calculated Carbon Aromaticity Index is discussed.

scholarly journals EIS Evaluation of Fe, Cr, and Ni in NaVO3at 700°C

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
O. Sotelo-Mazón ◽  
J. Porcayo-Calderon ◽  
C. Cuevas-Arteaga ◽  
J. J. Ramos-Hernandez ◽  
J. A. Ascencio-Gutierrez ◽  
...  
Keyword(s):  
Gas Turbines ◽  
Combustion Products ◽  
Corrosion Process ◽  
Fuel Oil ◽  
High Grade ◽  
Residual Fuel Oil ◽  
Fuel Oils ◽  
Heavy Fuel Oils ◽  
Steam Boilers ◽  
Nickel Base

Due to the depletion of high-grade fuels and for economic reasons, use of residual fuel oil in energy generation systems is a common practice. Residual fuel oil contains sodium, vanadium, and sulphur as impurities, as well as NaCl contamination. Metallic dissolution caused by molten vanadates has been classically considered the main corrosion process involved in the degradation of alloys exposed to the combustion products of heavy fuel oils. Iron and nickel base alloys are the commercial alloys commonly used for the high temperature applications, for example, manufacture of components used in aggressive environments of gas turbines, steam boilers, and so forth. Therefore, because the main constituents of these materials are Fe, Cr, and Ni, where Cr is the element responsible for providing the corrosion resistance, in this study the electrochemical performance of Fe, Cr, and Ni in NaVO3at 700°C in static air for 100 hours was evaluated.

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