Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High amine emissions formation and aerosol particle size distribution in post-combustion CO2 capture process
https://orcid.org/0000-0002-3282-8756
Highlights Realistic high nuclei flue gas was generated by the aerosol generator. PSD shifts by parameters were observed with ELPI+. Amine emissions were confirmed to be consistent with the total particle mass. Promoting aerosol growth in the absorber didn't suppress PM1 emissions.
Abstract Amine emissions in the CO2 absorption system may lead to solvent loss and cause a series of environmental problems, especially in high nuclear scenario. In the 3.6 Nm3/h test bench, when the simulated flue gas passes through the absorber, the particle concentration dropped sharply from 3.43 × 107 cm−3 to 4.41 × 106 cm−3. The total MEA emissions reached 1519 mg/Nm3 at the outlet of the absorber, including 476 mg/Nm3 vapor-type amine. By overcoming the difficulty of measuring high-quality liquid particles, the results of particle size distribution (PSD) provided a revealing insight into aerosol growth. The changing trend of amine emissions was completely consistent with total particle emissions. High absorption reaction intensity can be achieved with lower lean solvent CO2 loading, appropriate CO2 concentration (12%), and higher solvent temperature (only for small absorbers). Then, more droplets grew up to near-micron level (> 733 nm), causing total particle emissions increased dramatically to 3500–6000 mg/Nm3. Considering the CO2 absorption system is equipped with a water wash column and demister, the absorber outlet particle with a size less than 1 μm (PM1) will be the main threat. The PM1 emissions and control strategies were discussed based on the PSD data. It is recommended to promote aerosol growth after the absorber rather than restrain it in the absorber.
High amine emissions formation and aerosol particle size distribution in post-combustion CO2 capture process
https://orcid.org/0000-0002-3282-8756
Highlights Realistic high nuclei flue gas was generated by the aerosol generator. PSD shifts by parameters were observed with ELPI+. Amine emissions were confirmed to be consistent with the total particle mass. Promoting aerosol growth in the absorber didn't suppress PM1 emissions.
Abstract Amine emissions in the CO2 absorption system may lead to solvent loss and cause a series of environmental problems, especially in high nuclear scenario. In the 3.6 Nm3/h test bench, when the simulated flue gas passes through the absorber, the particle concentration dropped sharply from 3.43 × 107 cm−3 to 4.41 × 106 cm−3. The total MEA emissions reached 1519 mg/Nm3 at the outlet of the absorber, including 476 mg/Nm3 vapor-type amine. By overcoming the difficulty of measuring high-quality liquid particles, the results of particle size distribution (PSD) provided a revealing insight into aerosol growth. The changing trend of amine emissions was completely consistent with total particle emissions. High absorption reaction intensity can be achieved with lower lean solvent CO2 loading, appropriate CO2 concentration (12%), and higher solvent temperature (only for small absorbers). Then, more droplets grew up to near-micron level (> 733 nm), causing total particle emissions increased dramatically to 3500–6000 mg/Nm3. Considering the CO2 absorption system is equipped with a water wash column and demister, the absorber outlet particle with a size less than 1 μm (PM1) will be the main threat. The PM1 emissions and control strategies were discussed based on the PSD data. It is recommended to promote aerosol growth after the absorber rather than restrain it in the absorber.
High amine emissions formation and aerosol particle size distribution in post-combustion CO2 capture process
https://orcid.org/0000-0002-3282-8756
Highlights Realistic high nuclei flue gas was generated by the aerosol generator. PSD shifts by parameters were observed with ELPI+. Amine emissions were confirmed to be consistent with the total particle mass. Promoting aerosol growth in the absorber didn't suppress PM1 emissions.
Abstract Amine emissions in the CO2 absorption system may lead to solvent loss and cause a series of environmental problems, especially in high nuclear scenario. In the 3.6 Nm3/h test bench, when the simulated flue gas passes through the absorber, the particle concentration dropped sharply from 3.43 × 107 cm−3 to 4.41 × 106 cm−3. The total MEA emissions reached 1519 mg/Nm3 at the outlet of the absorber, including 476 mg/Nm3 vapor-type amine. By overcoming the difficulty of measuring high-quality liquid particles, the results of particle size distribution (PSD) provided a revealing insight into aerosol growth. The changing trend of amine emissions was completely consistent with total particle emissions. High absorption reaction intensity can be achieved with lower lean solvent CO2 loading, appropriate CO2 concentration (12%), and higher solvent temperature (only for small absorbers). Then, more droplets grew up to near-micron level (> 733 nm), causing total particle emissions increased dramatically to 3500–6000 mg/Nm3. Considering the CO2 absorption system is equipped with a water wash column and demister, the absorber outlet particle with a size less than 1 μm (PM1) will be the main threat. The PM1 emissions and control strategies were discussed based on the PSD data. It is recommended to promote aerosol growth after the absorber rather than restrain it in the absorber.
High amine emissions formation and aerosol particle size distribution in post-combustion CO2 capture process
Yi, Ningtong (Autor:in) / Fang, Mengxiang (Autor:in) / Di, Wentao (Autor:in) / Wang, Tao (Autor:in) / Gao, Xiang (Autor:in) / Zhang, Wei (Autor:in) / Ge, Chunliang (Autor:in) / Yuan, Jingjuan (Autor:in)
19.04.2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Amine reclaiming technologies in post-combustion carbon dioxide capture
| Online Contents | 2015
Piperazine aerosol mitigation for post-combustion carbon capture
| Elsevier | 2019