25 Sep '11, 3pm

Study finds well-to-wheels GHG emissions of GTL diesel lower than that of petroleum diesel when co-product displacem...

Condensate and LPG. The associated upstream production process that operates to feed the GTL plant, depending on the characteristics of the gas reservoir and can produce significant amounts of gas condensate, which can add substantially to the overall liquid product output. When assessing the overall WTW GHG emissions impact of GTL (and other natural gas-based fuel pathways), the associated gas condensate produced by the upstream portion of the facilities needs to be carefully considered, Forman et al. suggest. The gas processing facility separates LPG and condensate from the feed gas to the GTL plant at carbon efficiencies (98%) that are significantly higher than those for the GTL process alone (79.1%). The net effect is an increase in the overall efficiency of the entire system relative to the GTL process alone. For the study, the authors assumed that LPG is burned local...

Full article: http://www.greencarcongress.com/2011/09/forman-20110925.html

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