Publication detail

Suitability of different twin-fluid atomizer types for CO2 capture in spray columns

CEJPEK, O. MALÝ, M. AVULAPATI, M. JEDELSKÝ, J.

Original Title

Suitability of different twin-fluid atomizer types for CO2 capture in spray columns

Type

article in a collection out of WoS and Scopus

Language

English

Original Abstract

Post-combustion-capture of primary greenhouse gases is one of the global warming reduction methods. Twin-fluid atomizers can be used for spraying of aqueous ammonia solutions, which scrub CO2 from flue gasses. This process requires well-tailored spray characteristics, such as mean drop size, drop size distribution and droplet density. Spray cone angle (SCA), and droplet velocity are additionally relevant in spray mixing and droplet-gas interactions in spray columns. Choosing a relevant atomizer and optimum operation regime allow for effective solvent utilization in the flue gas scrubbing process. The present work examines four different twin-fluid atomizers operated at an inlet pressure of 0.05, 0.1 and 0.2 MPa with gas-to-liquid ratio (GLR) 2.5, 5 and 10%: classic effervescent atomizer with single exit orifice, multi-hole effervescent atomizer with four exit orifices and two novel “impinging” effervescent atomizers with impingement angles of 20° and 45°. Their spray structure and SCA were analysed using high-speed visualisations. The droplet size and velocity in the spray were probed using a phase-Doppler analyser (PDA). Impinging effervescent atomizers shows favourable spray characteristics for spray columns application as smaller RSF, uniform velocity and larger spray cone angle.

Keywords

CO2 capture; Twin-fluid atomizers; Phase-Doppler anemometry; Spray characteristics

Authors

CEJPEK, O.; MALÝ, M.; AVULAPATI, M.; JEDELSKÝ, J.

Released

2. 9. 2021

Pages from

1

Pages to

8

Pages count

8

URL

http://journals.ed.ac.uk/ICLASS_Edinburgh/article/view/6016/7863

BibTex

@inproceedings{BUT172998,
  author="Ondřej {Cejpek} and Milan {Malý} and Madan {Avulapati} and Jan {Jedelský}",
  title="Suitability of different twin-fluid atomizer types for CO2 capture in
spray columns",
  booktitle="ICLASS 2021 - 15th Triennial International Conference on Liquid Atomization and Spray Systems",
  year="2021",
  volume="1",
  number="1",
  pages="1--8",
  doi="10.2218/iclass.2021.6016",
  url="http://journals.ed.ac.uk/ICLASS_Edinburgh/article/view/6016/7863"
}