Topic
Substitute natural gas
About: Substitute natural gas is a research topic. Over the lifetime, 1216 publications have been published within this topic receiving 23604 citations. The topic is also known as: synthetic natural gas.
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TL;DR: The specific challenges of the (catalytic) methanation step in the production of SNG from dry biomass or within Power-to-Gas applications, the developed reactor types are discussed in this review.
Abstract: Production of Synthetic Natural Gas (SNG) from biomass is an important step to decouple the use of bioenergy from the biomass production with respect to both time and place. While anaerobic digestion of wet biomass is a state-of-the art process, wood gasification to producer gas followed by gas cleaning and methanation has only just entered the demonstration scale. Power-to-Gas applications using biogas from biomass fermentation or producer gas from wood gasification as carbon oxide source are under development. Due to the importance of the (catalytic) methanation step in the production of SNG from dry biomass or within Power-to-Gas applications, the specific challenges of this step and the developed reactor types are discussed in this review.
41 citations
TL;DR: In this article, the thermodynamic efficiency of bio-fuels production is analyzed and compared using both the direct exergy analysis and the thermo-ecological cost, which leads to the detection of exergy losses in various elements which forms the starting point to the improvement of conversion efficiency.
40 citations
TL;DR: In this paper, the integration of two different methanation technologies (fixed bed adiabatic and fluidized bed isothermal) in a SNG production process and the consequences for the overall process energy conversion performance are analyzed.
Abstract: This paper analyzes the integration of two different methanation technologies – fixed bed adiabatic and fluidised bed isothermal - in a SNG production process and the consequences for the overall process energy conversion performance. The different operating conditions of the two methanation technologies lead to a change in temperature levels and quantities of recoverable heat, respectively, but also to differences in the overall processes’ power consumption. Using pinch methodology for optimal internal heat recovery in combination with flowsheeting software (ASPEN Plus), the two methanation alternatives are fitted into the SNG production process. The potential power production from recovered process heat is analysed based on the Carnot efficiency and compared to the overall power consumption within the SNG process. Both methanation alternatives perform equally within the given boundary conditions, resulting in an output of SNG of 63.3 MWLHV per 100 MWLHV dry fuel input and a ratio of about 1.22 between theoretical power production and overall power consumption.
40 citations
TL;DR: In this paper, a PtG-oxycombustion hybridized plant is simulated using Aspen Plus® software and the performance of the combined system is analyzed through the definition of a size ratio, ξ o x y, that relates the flow of renewable hydrogen produced in electrolyser and the thermal output of the boiler.
40 citations
TL;DR: In this paper, the authors present a modeling analysis comparison between substitute natural gas production from coal by means of allothermal steam gasification and autothermal oxygen gasification, using the computer software IPSEpro™.
40 citations