Patent
Substituted natural gas via hydrocarbon steam reforming
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TLDR
In this paper, a multiple-stage hydrocarbon steam reforming process for producing a methane-rich substitute natural gas is described, where a portion of the first stage efluent is condensed, water is removed therefrom and the remainder is recycled to combine with the fresh charge stock to the second stage.Abstract:Â
A multiple-stage hydrocarbon steam reforming process for producing a methane-rich substitute natural gas. A portion of the first stage efluent is condensed, water is removed therefrom and the remainder is recycled to combine with the fresh charge stock to the first stage. Following one stage of methanation, or shift conversion, both steam and carbon dioxide are removed prior to effecting additional reactions in a second methanation stage.read more
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Systems and methods for producing substitute natural gas
Siva Ariyapadi,Phillip Shires +1 more
TL;DR: In this article, a method for producing synthetic gas is described, which can include gasifying a carbonaceous feedstock in the presence of an oxidant within a gasifier to provide a raw syngas.
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TL;DR: In this article, the authors proposed a method and a device for producing a carbon dioxide low, hydrogen-rich gas or a conditioned synthesis gas from carbonaceous feedstock by pyrolysis and/or steam reforming reaction.
References
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Combined shift and methanation reaction process for the gasification of carbonaceous materials
TL;DR: In this paper, a coal gasification system is combined with a methanation reaction in a single reactor system, where the shift reaction between steam and the product gas adjusts the hydrogen/carbon monoxide ratio.
Patent
Process for the production of gases containing methane from hydrocarbons
TL;DR: In this article, a mixture of paraffinic hydrocarbons with an average carbon content of 4-10 carbon atoms in the vapour phase with steam over a bed of nickel catalyst at atmospheric or superatmospheric pressure, the reactants being heated to a temperature of above 350 DEG C.
Patent
Process for producing high strength reducing gas
TL;DR: In this paper, a multi-step process using a C3 to C15 hydrocarbon such as liquid naphtha as the starting material is described, and the resulting gas is steam reformed in the presence of a reforming catalyst to produce reducing gas comprising hydrogen and carbon monoxide.
Patent
Process for manufacturing high purity methane gas
TL;DR: In this article, a process for manufacturing high purity methane gas by subjecting a gas mixture mainly comprising methane, hydrogen, carbon monoxide, carbon dioxide and steam to a first methanization reaction step in the presence of a nickel catalyst filled in the reaction zone to methanize a part of the carbon oxides contained therein, then subjecting the gas mixture from the first step to a carbon dioxide-absorption step to remove superfluous carbon dioxide.
Patent
Process for producing methane-rich gases from hydrocarbons
TL;DR: In this article, the reaction conditions in both zones are such that the temperature of the catalyst in both reaction zones is in the range 300 DEG -500 DEG C, and the reaction is preferably carried out in the presence of a catalyst which is 50 to 60 weight percent nickel on a magnesium spinel support.