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Download The Challenge of Co-product Management for Large-scale Energy Systems—Power, Fuel and CO2
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Date: 10/2/2012
Type: Presentation
Status: Active
NETL Contact: Timothy J. Skone, P.E.
Technology Focus Area(s):
Analysis Focus Area(s):
Author(s): Timothy J Skone (NETL)

Product Description
Applying traditional co-product management methods such as physical allocation and system expansion in conventional ways can lead to large study uncertainty in LCA of large scale energy systems. The use of advanced power plants with carbon capture as a source of CO2 results in the co-production of electricity and transportation fuels (gasoline or diesel). Co-product allocation can be avoided by expanding the system to include displacement of other routes to electricity generation, but conjecture about the expanded system leads to wide uncertainty. If energy is used as a basis for co-product allocation between electricity and liquid fuel (diesel or gasoline), the differences between the useful energy in the energy products hinders comparability. Partitioning a portion of the system, in this case the power plant, to perform more accurate energy allocation is a third approach, and is possible when detailed plant schematics allow disaggregation of integrated processes.