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 GHGenius 3.18 TagsCoal Bed Methane
GHGenius 3.18
Natural Gas
Shale Gas
 Sources de Gaz Naturel Non Classique au Modèle GHG
 Prepared March 2010
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La production canadienne de gaz naturel classique diminue et devrait continuer de baisser au cours des prochaines années. Dans ses dernières prévisions, l’Office national de l’énergie s’attend à ce que le méthane de houille, le gaz de schiste et finalement le gaz des régions pionnières complètent l’offre décroissante de gaz classique et de gaz de formation imperméable comme le montre la figure suivante.

L’objectif du présent travail était de modifier les voies du gaz naturel dans le modèle GHGenius pour tenir compte des différentes sources de gaz naturel. L’utilisateur du modèle GHGenius peut maintenant choisir de modéliser chaque type de gaz naturel individuellement ou un mélange des différents types de production. Les données servant à la modélisation de ces différentes sources de gaz n’étaient pas aussi bien étoffées que celles pour les gaz classiques et le modèle a été conçu afin de faciliter le changement des entrées au fur et à mesure que de meilleures données sont disponibles.

Tags: Coal Bed Methane - GHGenius 3.18 - Natural Gas - Shale Gas
 Biomass to gasoline and DME
 Prepared March 2010
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This work introduces two new pathways to GHGenius, wood to gasoline, and wood to dimethyl ether (DME) and expands the options for producing the wood feedstock to include the harvesting of timber from managed forests.

The interest in biofuels continues to grow and technology developers are considering the opportunities of producing fuels, other than ethanol and biodiesel, which can be used in either blends with petroleum fuels, or as replacements for petroleum fuels. It is important that an understanding of the environmental implications of these technologies be understood before the fuels are introduced to the marketplace. This work helps to address that need by expanding GHGenius to consider two new biomass to fuel processes.

Bio-gasoline can be produced in a multistep process to gasify wood, convert the syngas to methanol or DME and then convert the methanol or DME to gasoline. The back end of the process is similar to the natural gas to methanol to gasoline process that was operated commercially in New Zealand in the 1990s by Mobil.

Bio-DME can also be produced through a similar route except without the last step of converting the DME to gasoline. DME has interesting fuel properties, including a high cetane number, and no carbon carbon bonds. It thus has potential as a replacement diesel fuel as well as a potential hydrogen carrier.

Wood feedstock in GHGenius has been represented by short rotation forestry (SRF) or by wood residues. A switch on the input sheet has been used to choose which feedstock is active in the model. There has been increased interest in harvesting timber for energy applications rather than for fibre so this third option has been added to the model. This option is now active for all of the wood to energy pathways in the model, not just the two that have been added here.
The new version of the model that accompanies this report is version 3.18.

Tags: DME - GHGenius 3.18 - Gasoline - Wood
 Unconventional Natural Gas
 Prepared March 2010
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Canadian production of conventional natural gas is declining and is expected to continue to decline over the next few years. The National Energy Board, in their latest forecast, sees coal bed methane, shale gas, and eventually frontier gas supplementing declining supplies of conventional gas and tight gas.

The goal of this work was to modify the natural gas pathways in GHGenius to accommodate these different sources of natural gas. The GHGenius user can now choose to model each type of natural gas individually or a blend of the different types of production. The data used for modelling these different sources of gas was not as well developed as the data for conventional gas and the model has been developed so that it is easy to change these inputs as better data become available.

Tags: Coal Bed Methane - GHGenius 3.18 - Natural Gas - Shale Gas
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