| dbo:abstract |
A biogas upgrader is a facility that is used to concentrate the methane in biogas to natural gas standards. The system removes carbon dioxide, hydrogen sulphide, water and contaminants from the biogas. One technique for doing this uses amine gas treating. This purified biogas is also called biomethane. It can be used interchangeably with natural gas. Raw biogas produced from digestion is roughly 60% methane and 29% CO2 with trace elements of H2S; it is not high quality enough to be used as fuel gas for machinery. The corrosive nature of H2S alone is enough to destroy the internals of a plant. The solution is the use of biogas upgrading or purification processes whereby contaminants in the raw biogas stream are absorbed or scrubbed, leaving more methane per unit volume of gas. There are four main methods of upgrading: water washing, pressure swing adsorption, selexol adsorbtion, and amine gas treating. (en) Unter Biogasaufbereitung werden Verfahren verstanden, mit denen Biogas so gereinigt wird, dass es anschließend einer energetischen oder stofflichen Nutzung zugeführt werden kann. Das Rohbiogas wird in Biogasanlagen erzeugt und enthält ein Gemisch verschiedener Gase. Auch Klärgas und Deponiegas müssen vor der Verwertung aufbereitet werden. (de) L'épuration du biogaz est un procédé de séparation des mélanges gazeux permettant de transformer du biogaz en biométhane riche en méthane en retirant le dioxyde de carbone. Plusieurs technologies sont disponibles sur le marché. (fr) |
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| rdfs:comment |
Unter Biogasaufbereitung werden Verfahren verstanden, mit denen Biogas so gereinigt wird, dass es anschließend einer energetischen oder stofflichen Nutzung zugeführt werden kann. Das Rohbiogas wird in Biogasanlagen erzeugt und enthält ein Gemisch verschiedener Gase. Auch Klärgas und Deponiegas müssen vor der Verwertung aufbereitet werden. (de) L'épuration du biogaz est un procédé de séparation des mélanges gazeux permettant de transformer du biogaz en biométhane riche en méthane en retirant le dioxyde de carbone. Plusieurs technologies sont disponibles sur le marché. (fr) A biogas upgrader is a facility that is used to concentrate the methane in biogas to natural gas standards. The system removes carbon dioxide, hydrogen sulphide, water and contaminants from the biogas. One technique for doing this uses amine gas treating. This purified biogas is also called biomethane. It can be used interchangeably with natural gas. Raw biogas produced from digestion is roughly 60% methane and 29% CO2 with trace elements of H2S; it is not high quality enough to be used as fuel gas for machinery. The corrosive nature of H2S alone is enough to destroy the internals of a plant. (en) |
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Biogasaufbereitung (de) Biogas upgrader (en) Épuration du biogaz (fr) |
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