This work is a meta-study of CO 2 capture processes for coal and natural gas power generation, including technologies such as post-combustion solvent-based carbon capture, the integrated gasification combined cycle process, oxyfuel combustion, membrane-based carbon capture processes, and solid oxide fuel cells. A literature survey of recent techno-economic studies was conducted, compiling relevant data on costs, efficiencies, and other performance metrics. The data were then converted in a consistent fashion to a common standard (such as a consistent net power output, country of construction, currency, base year of operation, and captured CO 2 pressure) such that a meaningful and direct comparison of technologies can be made. The processes were compared against a standard status quo power plant without carbon capture to compute metrics such as cost of CO 2 emissions avoided to identify the most promising designs and technologies to use for CO 2 emissions abatement.
The following article is a "pre-print" of an article accepted for publication in an Elsevier journal.Hoseinzade L, Adams TA II. Modeling and simulation of an integrated steam reforming and nuclear heat system. International Journal of Hydrogen Energy 42 (2017) pp. 25048-25062The pre-print is not the final version of the article. It is the unformatted version which was submitted for peer review, but does not contain any changes made as the result of reviewer feedback or any editorial changes. Therefore, there may be differences in substance between this version and the final version of record.The final, official version of the article can be downloaded from the journal's website via this DOI link when it becomes available (subscription or purchase may be required):
AbstractIn this study, a dynamic and two-dimensional model for a steam methane reforming process integrated with nuclear heat production is developed. The model is based on first principles and considers the conservation of mass, momentum and energy within the system. The model is multiscale, considering both bulk gas effects as well as spatial differences within the catalyst particles. Very few model parameters need to be fit based on the design specifications reported in the literature. The resulting model fits the reported design conditions of two separate pilot-scale studies (ranging from 0.4 to 10 MW heat transfer duty). A sensitivity analysis indicated that disturbances in the helium feed conditions significantly affect the system, but the overall system performance only changes slightly even for the large changes in the value of the most uncertain parameters.
In
the previous study, a dynamic and two-dimensional model for
a steam methane reforming process integrated with nuclear heat production
was developed. It was shown that the integrated high temperature gas-cooled
reactor (HTGR)/steam methane reforming (SMR) is an efficient process
for applications such as hydrogen production. In this study, it is
demonstrated that combining nuclear heat with the mix of steam and
dry reforming process can be a promising option to achieve certain
desired H2/CO ratios for Fischer–Tropsch or other
downstream energy conversion processes. The model developed in the
previous study is extended to the combined steam and dry reforming
process. The resulting model was validated using reported experimental
data at nonequilibrium and equilibrium conditions. The dynamic and
steady state performance of the integrated mixed reforming of methane
and nuclear heat system was studied, and it was found that in addition
to desired H2/CO ratios, higher methane conversion and
lower CO2 emissions can be achieved using the proposed
design compared to the HTGR/SMR system.
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