Pyrolysis of Natural Gas: Effects of Process Variables and Reactor Materials on the Product Gas Composition

2019 ◽  
Vol 42 (3) ◽  
pp. 690-698
Author(s):  
Steven Wang ◽  
Woo Jin Lee ◽  
Chao'en Li ◽  
Benny Kuan ◽  
Nick Burke ◽  
...  
Keyword(s):  
Natural Gas ◽  
Gas Composition ◽  
Process Variables ◽  
Product Gas ◽  
Reactor Materials

scholarly journals Effect of biomass fuel ash and bed material on the product gas composition in DFB steam gasification

Energy ◽  
2021 ◽  
Vol 219 ◽  
pp. 119650
Author(s):  
K. Fürsatz ◽  
J. Fuchs ◽  
F. Benedikt ◽  
M. Kuba ◽  
H. Hofbauer
Keyword(s):  
Steam Gasification ◽  
Biomass Fuel ◽  
Gas Composition ◽  
Product Gas ◽  
Fuel Ash ◽  
Bed Material

Modeling of Natural Gas Composition Effect on Low NOx Burners Operation in Heavy Duty Gas Turbine

2021 ◽  
Vol 143 (3) ◽  
Author(s):  
Serena Romano ◽  
Roberto Meloni ◽  
Giovanni Riccio ◽  
Pier Carlo Nassini ◽  
Antonio Andreini
Keyword(s):  
Natural Gas ◽  
Gas Turbine ◽  
Deep Understanding ◽  
Combustion Efficiency ◽  
Gas Composition ◽  
Gas Combustion ◽  
Annular Combustor ◽  
Heavy Duty Gas Turbine ◽  
Minimal Environmental Impact ◽  
The Impact

Abstract This paper addresses the impact of natural gas composition on both the operability and emissions of lean premixed gas turbine combustion system. This is an issue of growing interest due to the challenge for gas turbine manufacturers in developing fuel-flexible combustors capable of operating with variable fuel gases while producing very low emissions at the same time. Natural gas contains primarily methane (CH4) but also notable quantities of higher order hydrocarbons such as ethane (C2H6) can also be present. A deep understanding of natural gas combustion is important to obtain the highest combustion efficiency with minimal environmental impact. For this purpose, Large Eddy Simulations of an annular combustor sector equipped with a partially premixed burner are carried out for two different natural gas compositions with and without including the effect of flame strain rate and heat loss resulting in a more adequate description of flame shape, thermal field, and extinction phenomena. Promising results, in terms of NOx, compared against available experimental data, are obtained including these effects on the flame brush modeling, enhancing the fuel-dependency under nonadiabatic condition.

scholarly journals Catalytic production of low-carbon footprint sustainable natural gas

2022 ◽  
Vol 13 (1) ◽  
Author(s):  
Xiaoqin Si ◽  
Rui Lu ◽  
Zhitong Zhao ◽  
Xiaofeng Yang ◽  
Feng Wang ◽  
...  
Keyword(s):  
Natural Gas ◽  
Carbon Footprint ◽  
Biological Process ◽  
Total Carbon ◽  
Gas Composition ◽  
Low Carbon ◽  
Carbon Yield ◽  
Gas Products ◽  
Forestry Residues ◽  
Solid Biomass

AbstractNatural gas is one of the foremost basic energy sources on earth. Although biological process appears as promising valorization routes to transfer biomass to sustainable methane, the recalcitrance of lignocellulosic biomass is the major limitation for the production of mixing gas to meet the natural gas composition of pipeline transportation. Here we develop a catalytic-drive approach to directly transfer solid biomass to bio-natural gas which can be suitable for the current infrastructure. A catalyst with Ni2Al3 alloy phase enables nearly complete conversion of various agricultural and forestry residues, the total carbon yield of gas products reaches up to 93% after several hours at relative low-temperature (300 degrees Celsius). And the catalyst shows powerful processing capability for the production of natural gas during thirty cycles. A low-carbon footprint is estimated by a preliminary life cycle assessment, especially for the low hydrogen pressure and non-fossil hydrogen, and technical economic analysis predicts that this process is an economically competitive production process.

Downhole measurements and determination of natural gas composition using Raman spectroscopy

2019 ◽  
Vol 65 ◽  
pp. 25-31 ◽  
Author(s):  
K.M. Dąbrowski ◽  
Sz Kuczyński ◽  
J. Barbacki ◽  
T. Włodek ◽  
R. Smulski ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Natural Gas ◽  
Gas Composition ◽  
Downhole Measurements

Correlation of Landfill and Digester Gas Composition With Gas Turbine Pollutant Emissions

2006 ◽  
Author(s):  
V. G. McDonell ◽  
M. W. Effinger ◽  
J. L. Mauzey
Keyword(s):  
Natural Gas ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Wastewater Treatment Plants ◽  
Quantitative Relationship ◽  
Pollutant Emissions ◽  
Systematic Effect ◽  
Gas Composition ◽  
Emission Regulations ◽  
Carbon Dioxide Co2

The deployment of small gas turbines at landfills and wastewater treatment plants is attractive due to the availability of waste fuel gases generated at these sites and the need for onsite power and/or heat. The fuel gases produced by these applications typically contain 35 to 75% of the heating value of natural gas and contain methane (CH4) diluted primarily with carbon dioxide (CO2) and sometimes nitrogen (N2). Demonstrations of 30 to 250 kW gas turbines operating on these waste fuels are underway, but little detailed information on the systematic effect of the gas composition on performance is available. Growth in the use of small gas turbines for these applications will likely require that they meet increasingly stringent emission regulations, creating a need to better understand and to further optimize emissions performance for these gases. The current study characterizes a modified commercial natural gas fired 60 kW gas turbine operated on simluated gases of specified composition and establishes a quantitative relationship between fuel composition, engine load, and emissions performance. The results can be used to determine the expected impact of gas composition on emissions performance.

Organic geochemical research analytics of the petroleum industry: enhanced data density and method flexibility using gas chromatograph multiple detector coupling

2018 ◽  
Vol 484 (1) ◽  
pp. 97-106 ◽  
Author(s):  
M. Doerner ◽  
U. Berner ◽  
M. Erdmann ◽  
T. Barth
Keyword(s):  
Natural Gas ◽  
Stable Carbon Isotopes ◽  
Petroleum Industry ◽  
Gas Composition ◽  
Analytical Instrument ◽  
Stable Carbon ◽  
Gas Chromatograph ◽  
Data Density ◽  
Analytical System ◽  
Multiple Detectors

AbstractIn traditional organic geochemical investigations analyses are usually segmented in rather time-consuming single working steps that also require off-line preparation for each analytical instrument which can add to analytical bias. Since industry laboratories need to be precise, as well as cost- and time-efficient, we present a flexible and modular analytical concept which enables the user to perform advanced organic geochemical methods on a single gas chromatograph coupled to multiple detectors. The coupled analytical system can perform analyses of natural gas composition up to n-butane, stable carbon isotopes of natural gas compounds up to n-butane, identification and quantification of major compounds in oils and extracts, and compound-specific isotopes of oil and extracts. The analytical methodologies are appropriate for enhancement to broaden the application spectrum of coupled detectors.

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