Effect of Coal Syngas Fuel Composition on the Performance and Stability of Oxide Anodes

2019 ◽  
Vol 25 (2) ◽  
pp. 2107-2116 ◽  
Author(s):  
David M. Bierschenk ◽  
Jacob M. Haag ◽  
Kenneth R. Poeppelmeier ◽  
Scott A. Barnett
Keyword(s):  
Fuel Composition ◽  
Coal Syngas

Analysis of the optimal fuel composition for the Indonesian experimental power reactor

Kerntechnik ◽  
2017 ◽  
Vol 82 (1) ◽  
pp. 78-86 ◽  
Author(s):  
P. H. Liem ◽  
T. M. Sembiring ◽  
B. Arbie ◽  
I. Subki
Keyword(s):  
Power Reactor ◽  
Fuel Composition

One-step synthesis of renewable magnetic tea-biochar derived from waste tea leaves for the removal of Hg0 from coal-syngas

2021 ◽  
Vol 9 (4) ◽  
pp. 105313
Author(s):  
Adnan Raza Altaf ◽  
Haipeng Teng ◽  
Maoshen Zheng ◽  
Imtiaz Ashraf ◽  
Muhammad Arsalan ◽  
...  
Keyword(s):  
Tea Leaves ◽  
Coal Syngas ◽  
One Step ◽  
Waste Tea

scholarly journals Kinetic Modeling of the Ignition of Droplets of Fast Pyrolysis Bio-oil: Effect of Initial Diameter and Fuel Composition

2021 ◽  
Author(s):  
Alessandro Stagni ◽  
Raffaela Calabria ◽  
Alessio Frassoldati ◽  
Alberto Cuoci ◽  
Tiziano Faravelli ◽  
...  
Keyword(s):  
Kinetic Modeling ◽  
Fast Pyrolysis ◽  
Fuel Composition ◽  
Initial Diameter ◽  
Bio Oil

scholarly journals Additives to Coal-Based Fuel Pellets for the Intensification of Combustion and Reduction in Anthropogenic Gas Emissions

2020 ◽  
Vol 10 (19) ◽  
pp. 6689
Author(s):  
Dmitriy Klepikov ◽  
Tereza Kudelova ◽  
Kristina Paushkina ◽  
Pavel Strizhak
Keyword(s):  
Coal Dust ◽  
Polymer Particle ◽  
Porous Polymer ◽  
Flue Gases ◽  
Sulfur Oxides ◽  
Fuel Composition ◽  
Material Particle ◽  
Wood Sawdust ◽  
Fuel Pellets ◽  
Ignition And Combustion

Cylinder-shaped fuel pellets that were 3 mm in diameter and 3 mm in height, with a mass of 20 mg, were produced by compressing dry coal processing waste under the pressure of 5 MPa. The first group of pellets from coal dust with a particle size less than 140 µm did not contain any additives. The pellets of the second group of fuel compositions contained an oil-impregnated porous polymer material particle with a size of 0.5 mm in the central part of the experimental sample. The particle was surrounded by coal dust from all sides. The ratio of components was 90:10% for coal dust: polymer particle. The latter value almost completely corresponds to the fraction of oil in the fuel composition, since the mass of a porous polymer material particle is negligible. The third group of compositions was a 70:30% mixture of coal dust with wood sawdust with a particle size less than 45 µm, or 45–100, 100–200 and 200–500 µm. The ignition and combustion of single fuel pellets were studied under radiant heating in an air medium while varying the temperature from 800 to 1000 °C. The processes during the fuel combustion were recorded by a high-speed video camera, and the concentrations of the main anthropogenic emissions in flue gases were measured by a gas analyzer. The main characteristics were established—ignition delay times (2–8 s) and duration of burnout (40–90 s)—at different heating temperatures. A difference was established in the combustion mechanisms of the pellets, when adding various components to the fuel mixture composition. This has a direct influence on the induction period duration and combustion time, other conditions being equal, as well as on the concentration of nitrogen and sulfur oxides in the flue gases. Adding an oil-impregnated porous polymer particle to the fuel composition intensifies ignition and combustion, since the times of ignition delay and complete burnout of fuel pellets under threshold conditions decrease by 70%, whereas adding wood sawdust reduces the content of nitrogen and sulfur oxides in the flue gases by 30% and 25%, respectively.

Study on Fuel Composition for the Performance Enhancement of Solid Oxide Fuel Cell Operated with Biodiesel Fuel

2013 ◽  
Vol 57 (1) ◽  
pp. 3005-3011
Author(s):  
Q. T. Tran ◽  
Y. Shiratori ◽  
Y. Kakihara ◽  
T. Kitaoka ◽  
K. Sasaki
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Performance Enhancement ◽  
Solid Oxide ◽  
Biodiesel Fuel ◽  
Fuel Composition ◽  
Oxide Fuel

Fuel Flexibility Influences on Premixed Combustor Blowout, Flashback, Autoignition and Instability

2006 ◽  
Author(s):  
Tim Lieuwen ◽  
Vince McDonell ◽  
Eric Petersen ◽  
Domenic Santavicca
Keyword(s):  
Natural Gas ◽  
Gas Turbine ◽  
Dynamic Stability ◽  
Current Understanding ◽  
Fuel Composition ◽  
Fuel Flexibility ◽  
Lean Premixed ◽  
Gas Fuel ◽  
The Impact ◽  
Underlying Processes

This paper addresses the impact of fuel composition on the operability of lean premixed gas turbine combustors. This is an issue of current importance due to variability in the composition of natural gas fuel supplies and interest in the use of syngas fuels. Of particular concern is the effect of fuel composition on combustor blowout, flashback, dynamic stability, and autoignition. This paper reviews available results and current understanding of the effects of fuel composition on the operability of lean premixed combustors. It summarizes the underlying processes that must be considered when evaluating how a given combustor’s operability will be affected as fuel composition is varied.

Analysis of Water–Fuel Ratio Variation in a Gas Turbine With a Wet-Compressor System by Change in Fuel Composition

2017 ◽  
Vol 140 (5) ◽  
Author(s):  
Yonatan Cadavid ◽  
Andres Amell ◽  
Juan Alzate ◽  
Gerjan Bermejo ◽  
Gustavo A. Ebratt
Keyword(s):  
Gas Turbine ◽  
Burning Velocity ◽  
Thermal Power ◽  
Flame Temperature ◽  
Fuel Composition ◽  
Nox Formation ◽  
Gaseous Hydrocarbon ◽  
Power Generators ◽  
Fuel Ratio ◽  
Combustion Properties

The wet compressor (WC) has become a reliable way to reduce gas emissions and increase gas turbine efficiency. However, fuel source diversification in the short and medium terms presents a challenge for gas turbine operators to know how the WC will respond to changes in fuel composition. For this study, we assessed the operational data of two thermal power generators, with outputs of 610 MW and 300 MW, in Colombia. The purpose was to determine the maximum amount of water that can be added into a gas turbine with a WC system, as well as how the NOx/CO emissions vary due to changes in fuel composition. The combustion properties of different gaseous hydrocarbon mixtures at wet conditions did not vary significantly from each other—except for the laminar burning velocity. It was found that the fuel/air equivalence ratio in the turbine reduced with lower CH4 content in the fuel. Less water can be added to the turbine with leaner combustion; the water/fuel ratio was decreased over the range of 1.4–0.4 for the studied case. The limit is mainly due to a reduction in flame temperature and major risk of lean blowout (LBO) or dynamic instabilities. A hybrid reaction mechanism was created from GRI-MECH 3.0 and NGIII to model hydrocarbons up to C5 with NOx formation. The model was validated with experimental results published previously in literature. Finally, the effect of atmospheric water in the premixed combustion was analyzed and explained.

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