Título: | CARBON CAPTURE AND STORAGE (CCS) APPLIED TO THE PRODUCTION OF HYDROGEN IN BRAZIL: A TECHNICAL, ECONOMIC AND ENVIRONMENTAL ANALYSIS | ||||||||||||
Autor(es): |
MARIANA DE CARVALHO TERENCE |
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Colaborador(es): |
FLORIAN ALAIN YANNICK PRADELLE - Orientador |
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Catalogação: | 03/AGO/2023 | Língua(s): | PORTUGUESE - BRAZIL |
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Tipo: | TEXT | Subtipo: | SENIOR PROJECT | ||||||||||
Notas: |
[pt] Todos os dados constantes dos documentos são de inteira responsabilidade de seus autores. Os dados utilizados nas descrições dos documentos estão em conformidade com os sistemas da administração da PUC-Rio. [en] All data contained in the documents are the sole responsibility of the authors. The data used in the descriptions of the documents are in conformity with the systems of the administration of PUC-Rio. |
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Referência(s): |
[pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/TFCs/consultas/conteudo.php?strSecao=resultado&nrSeq=63511@1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/TFCs/consultas/conteudo.php?strSecao=resultado&nrSeq=63511@2 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.63511 | ||||||||||||
Resumo: | |||||||||||||
Over the years, greenhouse gas emissions have grown significantly. In 2015, the countries
participating in COP21 signed the Paris Agreement, agreeing to limit global warming to
below 2 degrees C. The search for carbon neutrality in the Brazilian energy sector by 2050 will
involve replacing current sources with low-carbon alternatives, such as hydrogen, and
processes with carbon sequestration and storage (CCS). Hydrogen, however, can only be
an alternative if, during its production process, no CO2 emissions occur, which is not
currently a reality, given that the most mature technological route for H2 production is the
steam reforming of fossil fuels, which result in gray hydrogen. To reduce the CO2
intensity, alternative production methods are being considered. Among them, green
hydrogen, produced from the electrolysis of water using renewable electricity, and blue
hydrogen, which has a process equivalent to gray hydrogen, but with a subsequent CCS
step. The objective of this work was to better explore the technological route for the
production of blue hydrogen applied to the Brazilian context, performing a technical
analysis, which consisted of mapping regions with potential for implementing the
technological routes studied, in addition to economic analysis, with price comparison of
gray and blue hydrogens in Brazilian territory today, and environmental, analyzing the
possible impacts of emission reductions when adding CCS to the production of H2 by the
refining sector. Finally, it was concluded that the Southeast is the most likely region to
host the production of blue hydrogen, but that there are other options, such as the
Northeast, that could be used for pilot projects. As for the economic aspects, the
implementation of CCS can represent significant cost increases, which can reach 1100 percent
when compared to the gray hydrogen production route, which is more technologically
mature. Regarding environmental impacts, the use of CCS units can reduce by up to 90 percent
the emissions related to the production of H2 in the refining sector and reduce the global
warming potential of the activity by up to 70 percent.
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