Moving bed temperature swing adsorption in pilot scale using zeolite 13X for post combustion CO2 capture

Moving bed temperature swing adsorption in pilot scale using zeolite 13X for post combustion CO2 capture

• Autor
• Flavio Michels Bianchi
• Co-autores
• Pedro Rodrigo Silva Moura , Thiago Fernandes de Aquino , George Clark Bleyer , Rodrigo Almeida Silva da Costa
• Resumo

• CO₂ emissions in the most diverse industrial segments have driven the search for technological alternatives for CO₂ capture worldwide. Properly technical solutions, such as the chemical absorption process, are available. However, the costs associated with these technologies are still high considering the energy penalty that current abatement systems bring to the final product. In this scenario, adsorption processes are one of the most promising alternatives to gas separation, since absorption requires a lot of energy to regenerate the involved solvents. The fossil-based thermoelectric generation sector is one of the most notable in the volume of greenhouse gas emissions. The US Department of Energy has made substantial progress in an attempt to reduce the costs of CO₂ capture. A process that can contribute to this reduction is temperature swing adsorption. In this context, the work aims to present the project of a pilot CO­₂ capture plant that operates with a moving bed of 13X zeolites for temperature swing adsorption (TSA). The pilot plant is designed to capture 2 tons of CO₂ per day using a typical composition from natural gas and coal power plant. The system is being tested in two phases where in the first phase, average CO₂ removal from 25 to 54% was achieved with specific peaks of 84% capture. For phase two with mechanical modifications to the system, initial results pointed to an average reduction of approximately 60% with the expectation of reaching 90% at the end of the tests with improvements to the equipment. For the economic analysis of the process industrial application, the zeolite replacement was preponderant for the economics applicability of the project.

• Palavras-chave
• Temperature Swing Adsorption, CO2 Capture, Zeolite, Power Generation
• Área Temática
• Adsorção e Energia