Carbon Isotope Effects in Methane Production by Thermal Cracking

Sackett, William M.; Nakaparksin, Songchai; Dalrymple, D.G.

doi:10.1016/b978-0-08-012758-3.50006-2

Cited by 40 publications

(22 citation statements)

References 18 publications

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“…0.8-2.5%. In contrast, as indicated by the reports in the literature [20], a high reduction efficiency is obtained by a methane-rich reburning gas. Taking into account the importance of methane in the clean combustion of solid fuels in terms of reduction the emissions of NOx and as well considering the importance of the efficiency of the process, ie.…”

Section: Introductioncontrasting

confidence: 49%

Methane rich gasification of wood pellets

Joka

Poskrobko

2016

E3S Web Conf.

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Abstract. In the work there are shown the results of experimental studies on methane rich gasification of pinewood pellets in Bio-CONOx technology. The experiment was carried out on a laboratory scale gasifier (5 kW), which design features allow producing a high quality gas with a high methane content. In the results there was identified the impact of the quantity of Bio-CONOx on the amount of flammable gas compounds (methane, hydrogen and carbon monoxide) in the synthesis gas and the gas calorific value. The additive was added in 10,20,30 and 50% concentrations to the gasifier chamber. It has been shown that increasing the amount of the additive has a positive effect on the calorific value of the synthesis gas ( Fig.1,2). Gas with a high content of methane (and high calorific value) was obtained from gasification of biomass with a 50% addition of Bio-CONOx. There was also examined the proportion of blowing air (gasifying medium) for which the properties of obtained syngas were the best.

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Section: Introductioncontrasting

confidence: 49%

Methane rich gasification of wood pellets

Joka

Poskrobko

2016

E3S Web Conf.

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“…The latter is often associated with oil. Thermogenic gas sometimes loses C2+ hydrocarbons by migration, but with no significant changes in 813C(C1) values (Sackett et al, 1966;Schoell, 1983).…”

Section: Discussionmentioning

confidence: 99%

Origin of natural gas of dissolved-in-water type in Japan inferred from chemical and isotopic compositions: Occurrence of dissolved gas of thermogenic origin.

Igari

Sakata

1989

Geochem. J.

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“…after separation from the other components by fractional distillation at liquid nitrogen temperature and combustion to CO 2 in a method analogous to that of Sackett et al (1970). The δ 13 C of the resultant CO 2 was measured on a Nuclide RMS 60 ratio mass spectrometer and the results reported relative to the PeeDee belemnite (PDB) standard with a precision of ±0.2‰.…”

Section: Methodsmentioning

confidence: 99%

Molecular and Isotopic Analysis of Core Gases and Gas Hydrates, Deep Sea Drilling Project Leg 96

Pflaum¹,

Brooks²,

Cox³

et al. 1986

Initial Reports of the Deep Sea Drilling Project

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Molecular and isotopic compositions of void gases from Sites 618 and 619 were determined. The gases were predominantly methane with the C L /C 2 ratios averaging 4,000 and 26,000 at Sites 618 and 619, respectively. The δ 13 C-Cj values at Site 618 were nearly constant, ranging from -70.1 to -73.7‰. δ 13 C-CHj values for Site 619 between 76 and 178 meters sub-bottom ranged from -94.8 to -70.8‰, becoming progressively heavier with depth. The molecular and isotopic compositions at both sites are characteristic of biogenic methane.Small spheres (~ 1-2 mm diameter) of gas hydrates were observed in the Orca Basin between 20 and 40 m sub-bottom and were often associated with sandy sections. The hydrate was predominantly methane with a δ 13 -Cj of -71‰ and trace amounts of ethane, propane, and carbon dioxide. The isotopic value for the methane was similar to that of the nearest gas pocket, indicating that hydrate was formed from predominantly biogenic methane without isotopic fractionation.

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Carbon Isotope Effects in Methane Production by Thermal Cracking

Cited by 40 publications

References 18 publications

Methane rich gasification of wood pellets

Methane rich gasification of wood pellets

Origin of natural gas of dissolved-in-water type in Japan inferred from chemical and isotopic compositions: Occurrence of dissolved gas of thermogenic origin.

Molecular and Isotopic Analysis of Core Gases and Gas Hydrates, Deep Sea Drilling Project Leg 96

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