Chemical Engineering Department, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, 58060, Mexico.
Chemical Engineering Department, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, 58060, Mexico.
J Environ Manage. 2021 Dec 15;300:113746. doi: 10.1016/j.jenvman.2021.113746. Epub 2021 Sep 22.
Greenhouse gas emissions from power plants that use fossil fuels cause a serious impact to the environment, for this reason the use of renewable energy technologies is an important alternative as a way of combatting climate change. The production of power via biomass is considered as a carbon neutral energy resource, but it is well known that the non-fossil CO emitted from this type of processes can also be captured. In order to do so, in this work it is proposed a match between a Biogas combined cycle power plant and postcombustion carbon capture process, to capture the CO produced by the biogas combustion, and also it considered a match with an organic Rankine cycle that uses the wasted energy of the combustion gases. Additionally, it is considered that the captured carbon is used to produce some value-added chemicals and fuels. Environmental and energetic evaluations were carried out for the coupling of those technologies. The implementation of the carbon capture plant, results on a diminution of the 87% of the emission of the combined cycle power plant. The life cycle analysis results show that the study case of Syngas production via dry reforming of methane, presents the lower global warming potential (0.088 CO-eq kg/kg) and it was also found that the global warming potential has a reduction with the help of the mass integration between the different alternatives of CO utilization. Finally, it was found an annual reduction of 0.055 CO-eq t for the system with mass integration compared with the cases without mass integration.
使用化石燃料的发电厂产生的温室气体对环境造成严重影响，因此，使用可再生能源技术是应对气候变化的重要替代方案。生物质发电被认为是一种碳中性的能源资源，但众所周知，这种工艺产生的非化石 CO 也可以被捕获。为此，在这项工作中，提出了一种沼气联合循环发电厂与燃烧后碳捕集工艺的匹配，以捕集沼气燃烧产生的 CO，同时还考虑了一种与有机朗肯循环的匹配，该循环利用燃烧气体的废能。此外，还考虑了将捕获的碳用于生产一些高附加值的化学品和燃料。对这些技术的耦合进行了环境和能源评估。碳捕集厂的实施导致联合循环发电厂的排放量减少了 87%。生命周期分析结果表明，通过甲烷干重整生产合成气的研究案例，具有较低的全球变暖潜势（0.088 CO-eq kg/kg），并且还发现，通过不同 CO 利用方案的质量集成，全球变暖潜势有所降低。最后，与没有质量集成的情况相比，具有质量集成的系统的 CO 排放每年减少 0.055 CO-eq t。
