Biogas Combustion and Chemical Kinetics for Gas Turbine Applications

Fuel Blends ◽

Reduced Mechanism ◽

Turbine Design ◽

Biogas is produced from anaerobic digestion of biodegradable materials such as agricultural waste, animal waste, and municipal solid waste and its main constituents are CH4 and CO2. A review of biogas production and benefits as well as its combustion as an alternative gas turbine fuel is presented. To further understand the characteristics of biogas combustion, a detailed chemical kinetics study of biogas is conducted using the GRI-Mech 3.0 and the San Diego detailed mechanisms and a reduced mechanism in a counterflow configuration. Ignition delays and laminar flame speeds of some gaseous fuel blends which simulate biogas are calculated. Effects of the concentration of each species in the blend are discussed as well as its chemical contribution in the biogas combustion. Approximate analytical correlations are extracted from these results for quantitative predictions. Results of this study will provide valuable data both for gas turbine manufacturers and for biogas producers to modify the gas turbine design for biogas and to figure out how much cleaning and upgrading is required for biogas turbines.

Numerical CFD evaluation of a flameless burner using detailed chemical kinetics

10.26678/abcm.cobem2017.cob17-1976 ◽

2017 ◽

Author(s):

Marco Antonio Nascimento ◽

Lucilene Oliveria Rodrigues ◽

Fagner Luis Goulart Dias

Keyword(s):

Chemical Kinetics ◽

Flameless Burner ◽

PARALLEL SOLVER FOR THE SIMULATIONS OF DETONATION WAVES ON UNSTRUCTURED GRIDS

NONEQUILIBRIUM PROCESSES: RECENT ACCOMPLISHMENTS ◽

10.30826/nepcap9a-47 ◽

2020 ◽

Author(s):

A. I. Lopato ◽

◽

A. G. Eremenko ◽

Keyword(s):

Chemical Kinetics ◽

Numerical Scheme ◽

Unstructured Grids ◽

Numerical Study ◽

Numerical Approach ◽

Detonation Waves ◽

Parallel Solver ◽

Further Development ◽

Recently, we developed a numerical approach for the simulation of detonation waves on fully unstructured grids and applied it to the numerical study of the mechanisms of detonation initiation in multifocusing systems. Current work is devoted to further development of our numerical approach, namely, parallelization of the numerical scheme and introduction of more comprehensive detailed chemical kinetics scheme.

Numerical comparative study on knocking combustion of high compression ratio spark ignition engine fueled with methanol, ethanol and methane based on detailed chemical kinetics

Fuel ◽

10.1016/j.fuel.2021.121615 ◽

2021 ◽

Vol 306 ◽

pp. 121615

Author(s):

Xiaoyan Li ◽

Xudong Zhen ◽

Shuaiqing Xu ◽

Yang Wang ◽

Daming Liu ◽

...

Keyword(s):

Comparative Study ◽

Chemical Kinetics ◽

Compression Ratio ◽

Spark Ignition ◽

Spark Ignition Engine ◽

High Compression Ratio ◽

High Compression ◽

Numerical Study on Catalytic Combustion of Hydrogen-Air Mixture in a Channel Using Detailed Chemical Kinetics

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B ◽

10.1299/kikaib.73.2345 ◽

2007 ◽

Vol 73 (735) ◽

pp. 2345-2353 ◽

Cited By ~ 1

Author(s):

Shunichi KOGE ◽

Hiroshi YAMASHITA ◽

Shuichi MATSUNAGA ◽

Kazuhiro YAMAMOTO

Keyword(s):

Chemical Kinetics ◽

Catalytic Combustion ◽

Numerical Study ◽

Combustion Of Hydrogen ◽

Modeling the Detailed Chemical Kinetics of NOx Sensitization for the Oxidation of a Model fuel for Gasoline

SAE International Journal of Fuels and Lubricants ◽

10.4271/2010-01-1084 ◽

2010 ◽

Vol 3 (1) ◽

pp. 556-566 ◽

Cited By ~ 15

Author(s):

Chitralkumar V. Naik ◽

Karthik Puduppakkam ◽

Ellen Meeks

Keyword(s):

Chemical Kinetics ◽

Model Fuel ◽

Kinetics Of ◽

CO and H2O Time-Histories in Shock-Heated Blends of Methane and Ethane for Assessment of a Chemical Kinetics Model

Volume 4B: Combustion, Fuels and Emissions ◽

10.1115/gt2017-64978 ◽

2017 ◽

Author(s):

O. Mathieu ◽

C. Mulvihill ◽

E. L. Petersen ◽

Y. Zhang ◽

H. J. Curran

Keyword(s):

Gas Turbine ◽

Chemical Kinetics ◽

Laminar Flame ◽

Combustion Process ◽

Practical Interest ◽

Time History ◽

Good Marker ◽

Ignition Delay Times ◽

Time Histories ◽

Detailed Kinetics

Methane and ethane are the two main components of natural gas and typically constitute more than 95% of it. In this study, a mixture of 90% CH4 /10% C2H6 diluted in 99% Ar was studied at fuel lean (ϕ = 0.5) conditions, for pressures around 1, 4, and 10 atm. Using laser absorption diagnostics, the time histories of CO and H2O were recorded between 1400 and 1800 K. Water is a final product from hydrocarbon combustion, and following its formation is a good marker of the completion of the combustion process. Carbon monoxide is an intermediate combustion species, a good marker of incomplete/inefficient combustion, as well as a regulated pollutant for the gas turbine industry. Measurements such as these species time histories are important for validating and assessing chemical kinetics models beyond just ignition delay times and laminar flame speeds. Time-history profiles for these two molecules measured herein were compared to a modern, state-of-the-art detailed kinetics mechanism as well as to the well-established GRI 3.0 mechanism. Results show that the H2O profile is accurately reproduced by both models. However, discrepancies are observed for the CO profiles. Under the conditions of this study, the measured CO profiles typically increase rapidly after an induction time, reach a maximum and then decrease. This maximum CO mole fraction is often largely over-predicted by the models, whereas the depletion rate of CO past this peak is often over-estimated by the models for pressures above 1 atm. This study demonstrates the need to improve on the accuracy of the HCCO reactions involved in CO formation for pressures of practical interest for the gas turbine industry.