Open AccessDefining of criteria for flue gas decarbonization efficiency in methanation reactors with membrane technology
Author(s) -
Gheorghe Lăzăroiu,
Lucian Mihăescu,
Dana-Alexandra Ciupăgeanu,
Rodica-Manuela Grigoriu,
Dana-Andreya Bondrea
Publication year - 2021
Publication title -
e3s web of conferences
Language(s) - English
Resource type - Journals
eISSN - 2555-0403
pISSN - 2267-1242
DOI - 10.1051/e3sconf/202128602014
Subject(s) - flue gas , methanation , natural gas , volume (thermodynamics) , methane , environmental science , combustion , fuel gas , waste management , process engineering , flue gas emissions from fossil fuel combustion , substitute natural gas , hydrogen , engineering , syngas , chemistry , thermodynamics , physics , organic chemistry
The paper presents an investigation on the conditions for implementing a methanation membrane decarbonator coupled to an energy installation that generates flue gases. The retention of the carbon dioxide content in the flue gases and its conversion to methane is envisaged. For start, low thermal power installations, employing natural gas as main fuel supply, are considered. Internal combustion engines (also working with natural gas fuel) are taken into account for the testing of the carbon dioxide retention process. For this, a classification of the flue gas composition by fuel categories is initially carried out. The decarbonation efficiency is defined and clarifications are made withal regarding the connection between the decarbonation installation and the energy plant. The first practical achievements are also presented, resulting from a decarbonator with a volume of 940 cm 3 (having the inner diameter of 12 cm and a height of 50 cm). The results prove that the proposed solution has great potential for practical applications, further research being however necessary. In terms of operating costs (including hydrogen consumption), it is remarked that they can be reduced by exploiting the methane production and eliminating the carbon tax, extending the integration perspective form economic point of view.