Methanation of Synthetic Gas – Fundamentals and Process Development

Rönsch, Stefan; Ortwein, Andreas

doi:10.1002/cite.201100013

Cited by 42 publications

(18 citation statements)

References 10 publications

(2 reference statements)

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“…Since the early 2000s the production of Bio-SNG was investigated intensively. As a result, a wide range of technologies have been established over the years [3,[9][10][11].…”

Section: Methanationmentioning

confidence: 99%

Low‐Temperature CO Methanation in Oil‐Tempered Plate Reactors by Optimization of Catalyst Activation Conditions

et al. 2017

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Ni-catalyzed methanation has been discovered more than 100 years ago. Since then, many applications based on syngas -from coal or biomass -for the production of synthetic natural gas (SNG) have been established. Nevertheless, methanation still bears great potential for optimization. Especially for decentralized, biomass-based applications, decreased methanation temperatures and pressures are expected to lower the costs of the overall process. Consequently, it is necessary to obtain a catalyst that is highly active under such reduced reaction conditions. This objective was successfully reached by a systematic variation of reduction temperature, pressure, and hydrogen concentration under the aspects of the design of experiment within the catalyst activation process.

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“…Since the early 2000s the production of Bio-SNG was investigated intensively. As a result, a wide range of technologies have been established over the years [3,[9][10][11].…”

Section: Methanationmentioning

confidence: 99%

Low‐Temperature CO Methanation in Oil‐Tempered Plate Reactors by Optimization of Catalyst Activation Conditions

et al. 2017

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“…For providing a high conversion of CO, and accordingly a high concentration of CH 4 in the product stream, a H 2 /CO ratio of about 3:1 is required. Since a cleaned syngas typically has ratios of 1:3 to 2:1 [8] depending on the conditions of the gasification, a water-gas shift unit (WGS) is required to convert part of CO to H 2 according to reaction R3 in Table 1. The adjustment of the gas composition is described by the feed gas module M, which is defined in the following:…”

Section: Reactionmentioning

confidence: 99%

“…A feed gas module M of three is recommended for maximum methane yield [3][4][5][8][9][10][11]. Since the requirements of the syngas composition are different for the gas turbine and the methanation process, adjustments are necessary in the WGS.…”

Section: Reactionmentioning

confidence: 99%

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Design and Assessment of an IGCC Concept with CO2 Capture for the Co-Generation of Electricity and Substitute Natural Gas

2015

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Abstract:The focus of this work is on the modeling and the thermodynamic evaluation of an integrated gasification combined cycle (IGCC) for the co-production of electricity and substitute natural gas (SNG). At first, an IGCC with CO 2 capture for electricity generation is analyzed. Coal-derived syngas is conditioned in a water gas shift unit (WGS), and cleaned in an acid gas removal system including carbon capture. Eventually, the conditioned syngas is fed to a combined cycle. A second case refers to a complete conversion of syngas to SNG in an integrated commercial methanation unit (TREMP™ process, Haldor Topsøe, Kgs. Lyngby, Denmark). Due to the exothermic reaction, a gas recycling and intercooling stages are necessary to avoid catalyst damage. Based on a state-of-the-art IGCC plant, an optimal integration of the synthetic process considering off-design behavior was determined. The raw syngas production remains constant in both cases, while one shift reactor in combination with a bypass is used to provide an adequate H 2 /CO-ratio for the methanation unit. Electricity has to be purchased from the grid in order to cover the internal consumption when producing SNG. The resulting heat and power distributions of both cases are discussed.

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“…Diese exothermen Gleichgewichtsreaktionen sind bei der technischen Umsetzung mit der Wassergas-Shift-Reaktion und dem Boudouard-Gleichgewicht verbunden und finden im Temperaturbereich von 250 bis 400 °C und bei Drücken von 7 bis 85 bar an überwiegend Nickel-basierten Katalysatoren statt12,13 . Die Technologie ist im Bereich der Kohlevergasung industriell entwickelt und großtechnisch erprobt.…”

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